EP0372237B1 - Dispositif de correction du repérage de la surimpression sur une feuille dans une rotative à feuilles - Google Patents

Dispositif de correction du repérage de la surimpression sur une feuille dans une rotative à feuilles Download PDF

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Publication number
EP0372237B1
EP0372237B1 EP89120537A EP89120537A EP0372237B1 EP 0372237 B1 EP0372237 B1 EP 0372237B1 EP 89120537 A EP89120537 A EP 89120537A EP 89120537 A EP89120537 A EP 89120537A EP 0372237 B1 EP0372237 B1 EP 0372237B1
Authority
EP
European Patent Office
Prior art keywords
gripper
bridge
sheet
lever
register correction
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
EP89120537A
Other languages
German (de)
English (en)
Other versions
EP0372237A2 (fr
EP0372237A3 (en
Inventor
Gerhard Pollich
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 EP0372237A2 publication Critical patent/EP0372237A2/fr
Publication of EP0372237A3 publication Critical patent/EP0372237A3/de
Application granted granted Critical
Publication of EP0372237B1 publication Critical patent/EP0372237B1/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
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/04—Grippers
    • B41F21/05—In-feed grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/10—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position

Definitions

  • the invention relates to a device for register correction of the sheet prints or to compensate for tensioned sheets in a sheet-fed rotary printing machine by deforming the leading edge of the sheet in front of the printing unit with generic features according to the preamble of claim 1.
  • the bending device engages centrally on the gripper bridge shaft of the sheet transfer cylinder, so that it bends the gripper bridge shaft in the work cycle of the machine. As a result, the leading edge of the sheet is deformed in or against the direction of rotation of the cylinder in the middle.
  • the bending device consists of a movable arrangement of a central gripper bridge shaft bearing and a control cam mechanism with pressure roller and return spring, the current rotational position of the pressure roller being adjustable by a control shaft which, according to the proposal in this document, is to be formed directly by the gripper bridge shaft.
  • Such a bending device causes relatively high costs. Above all, there is the disadvantage that the deformation of the leading edge of the sheet cannot be adjusted while the machine is running, so that the machine has to be stopped repeatedly in the set-up phase in order to make register corrections by deforming the leading edge of the sheet.
  • US Pat. No. 2,577,099 shows a device for register correction, in which the gripper bridge shaft is held at the ends in a sheet transfer cylinder and is also bent in the middle in or against the running direction of the sheet.
  • the gripper bridge shaft is either tubular and supported in the middle of a channel in the sheet transfer cylinder on a pair of rollers, the axes of rotation of which take up a different angular position to the gripper bridge shaft axis and the rollers of which can be pressed individually against the gripper bridge shaft by means of an eccentric mechanism, or designed as a bending rod which is directly formed by an eccentric mechanism is deformable.
  • Such a control mechanism for the bending device is also quite complex and, above all, cannot be regulated while the machine is running.
  • DE-AS 23 14 302 and DE-PS 11 75 695 devices for deforming the leading edge of the sheet for the purpose of register correction are described, in which the gripper bridge shaft is divided and the adjacent ends of the shaft parts are mounted in a movable carriage, which by means of special Members is adjustable. These devices are also expensive and cannot be adjusted during machine operation.
  • a sheet feeder device for printing presses DE 20 52 786, is also known from the prior art. Above a paper feed plane, pretensioned levers are arranged by means of individual knurled screws, the position of which is changed by turning the knurled screws, so that the lever ends serving as stops act to different degrees on individual blocks, each of which is assigned to two gripper pads.
  • CH-525 774 also discloses a further device for feeding sheets to the grippers of a continuously rotating printing cylinder, in which a complex lever mechanism, comprising cams and tappets, extends around a roller-shaped body around the leading edge of the paper sheet during the sheet transport in two Deform steps.
  • the object of the invention is to provide a bending device for deforming the leading edge of the sheet for the purpose of register correction or to compensate for tensioned sheets in a gripper system for taking over sheets in a sheet-fed rotary printing press, which can be adjusted especially while the machine is running and as little additional as possible Components required.
  • An essential distinguishing feature of the invention compared to the prior art is thus the formation of the bending device on the gripper bridge of a pre-gripper, which carries out oscillating movements about an axis that is stationary with respect to the machine frame, but possibly adjustable in position, and whose gripper bridge is only at both ends by means of a rigid lever on a Gripper bridge shaft is supported.
  • the actual bending device then consists only of a stop that is fixed to the frame of the machine, but adjustable in height, against which the gripper bridge comes to rest with its central region before the further swinging ends of the gripper bridge have reached their zero position, in which the sheet gripper Take over bow. Since the stop is arranged on part of the machine frame, it can be adjusted at any time, even while the machine is running.
  • the stop can consist of an adjusting screw which passes through a nut thread of a part fixed to the frame.
  • End stops for the gripper bridge are fundamentally not necessary, but stops for the ends of the gripper bridge can also be arranged on the frame of the machine, against which the gripper bridge may come to rest in the zero position. If the middle stop for the gripper bridge is withdrawn behind the straight connecting line of the two end stops, the bending device is ineffective.
  • the middle stop is pushed forward with respect to the straight connecting line, so that the middle of the gripper bridge already comes into contact with this stop before the ends of the gripper bridge have reached the zero position or the outer stops, so that the gripper bridge around the middle stop is bent slightly.
  • Such a gripper bridge works without stops on gripper support strips, so that when the bending device is set, the bow protrudes further into the gripper at the ends than in the middle and the sheet sides are initially accelerated more strongly in the movement of the pre-gripper for the purpose of arch tension than in the middle, such as it also takes place in known devices.
  • the stop for the middle area of the gripper bridge is arranged on a cross member of the machine frame.
  • the middle stop for the gripper bridge is supported on the gripper bridge shaft, in order to enable a delayed retardation over several degrees of swivel.
  • a stop is provided in the form of a roller, which is mounted centrally on a further, firmly connected to the gripper bridge and approximately parallel to the two rigid, extending at the ends of the gripper levers extending between these levers which, on the other hand, has a pivot bearing which is connected to the gripper bridge shaft in a rotationally fixed manner and is arranged eccentrically to its axis.
  • This roller can be adjusted in its distance from the gripper shaft by a curve formed on the circumference of a ring rotatable about the gripper shaft.
  • a particularly advantageous solution is seen according to the invention in that the curve is formed on the outer jacket of a ring enclosing the gripper bridge shaft, the rotational position of which can be adjusted by means of an adjusting device fixed on the machine frame, for example an adjusting screw. When the device is turned off, the roller remains free and the lever is pressed against the stop screw with a spring.
  • the pre-gripper shown in the drawing takes over the sheet 1 to be printed from the feed table 2, on which the sheet was aligned with front marks and side marks, not shown.
  • the pre-gripper accelerates the sheet 1 to printing speed and transfers it to the transfer cylinder 3.
  • the pre-gripper is driven by a curve 4 shown in FIG. 1 via a roller lever 5 with a roller 6 rotatably mounted at its free end, which is supported by a spring 7 against the Curve 4 is pressed.
  • the curve accordingly, the bow is accelerated by the pre-gripper to the printing speed when it is transferred to cylinder 3, while after a corresponding delay in the last movement phase, the pre-gripper slowly returns to the other end position and reaches the zero position in which one new sheet 1 is taken over from feed table 2.
  • a gripper bridge 8 which extends across the machine width and is U-shaped in cross section, is attached with its ends to rigid levers 9, which on the other hand are fastened to the gripper shaft 10 of the pre-gripper.
  • the bending device for the gripper bridge 8 consists of an adjustable stop 12 on the machine frame 11, which interacts with a counter-stop 13 on the gripper bridge 8.
  • the stop 12 is designed as an adjusting screw 14 which is located in a transverse support or another component of the Machine frame 11 can be screwed, for which the free end of the screw 14 is connected to a knurled head or means for attaching a tool or motor.
  • optionally adjustable stops 15 and 16 are provided in the region of the ends of the gripper bridge 8 and interact with counter-stops 17 and 18 on the gripper bridge, mushroom heads being used in the simplest manner as stops 15 and 16 and screw heads as counter-stops 17 and 18.
  • the stop 12 can be withdrawn by the adjusting screw 14 to behind the straight connecting line through the planes of contact of the stops 15 and 16 with the counter-stops 17 and 18, so that there is no deflection of the gripper bridge 8.
  • the stop 12 can be moved forward by operating the adjusting screw 14 over this straight connecting line while the machine is running, so that the gripper bridge 8 bends to a greater or lesser extent, as is shown in FIG. 2 with the dash-dotted lines.
  • the gripper 20 which is movable in the gripper bridge 8 about its pivot shaft 19, grips further into the arc at the edge than in the middle, so that when the gripper moves, there is greater arc acceleration at the edge and thus tension of the arc .
  • the stop consists of a roller 21 which is supported by a spring 31 on the curve 24 and is freely rotatably mounted on a further lever 22 which is approximately parallel to the two rigid, levers arranged at the ends of the gripper bridge 8 in the middle between this extends, one end of which is fixedly connected to the gripper bridge 8 and the other end of which has a swivel bearing 23 which is connected in a rotationally fixed manner to a gripper bridge shaft 10 and is arranged eccentrically to its axis.
  • the stop formed by the roller 21 corresponds to the counter-stop 13 of the first embodiment, while the curve 24 here forms the fixed stop with respect to the machine frame 11.
  • a bending device is created through which the gripper bridge 8 can be deformed via the lever 22.
  • a curve 24 is determined in the exemplary embodiment which is formed on the circumference of a ring 25 which can be rotated about the axis of the gripper bridge shaft 10.
  • This ring 25 can be rotated by an adjusting screw 26 which is held axially immovably in the frame of the machine and the nut 27 of which is connected to the ring 25 such that it can move.
  • the curve 24 can be rotated into the area of the roller 21 acting as a stop, so that the roller 21 comes into contact earlier when the gripper bridge 8 swivels back and the gripper bridge 8 is thereby deformed.
  • the curve 24 is moved out of the range of motion of the roller 21, as shown in the drawing in FIG. 3.
  • the lever 22 connected in the middle to the gripper bridge 8 interacts with a further stop lever 28 which is arranged on the gripper bridge shaft 10 in a rotationally fixed manner and which is arranged on the gripper bridge shaft 10 in a rotationally fixed manner.
  • an adjustable stop 29 or 30 is provided, which rest against one another with their heads and can be set to a tension-free zero position of the gripper bridge.
  • the two heads of the two stops (screws) 29 and 30 are held together by a spring 31.

Landscapes

  • Registering Or Overturning Sheets (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (7)

  1. Dispositif de correction du repérage des impressions d'une feuille ou d'alignement de feuilles fixées dans des machines rotatives d'impression de feuilles par déformation du bord antérieur des feuilles devant le groupe d'impression, se composant d'un dispositif de flexion qui fait fléchir à la cadence de travail de la machine un support de preneurs juxtaposés (20) de feuilles qui est disposé transversalement au sens d'avance de la feuille (1), le dispositif de flexion agissant sur un preneur préliminaire exécutant des mouvements oscillant et équipé d'une traverse (8) de preneurs formant le support des preneurs (20) de feuilles et prenant appui sur un arbre (10) de traverse de preneurs, ledit dispositif de flexion comprenant au moins une butée réglable (24) qui est fixe par rapport au bâti (11) de la machine,
       caractérisé en ce que
       une came (24) disposée sous la table de marge (2) sur l'arbre (10) de la traverse des preneurs est réglable de manière que la butée (21) prenant appui sur elle et réglable par rapport à l'axe de l'arbre (10) de la traverse des preneurs induise progressivement une déformation partant du milieu de la machine dans la traverse (8) des preneurs, dont la position neutre est réglable, pendant le mouvement d'oscillation de cette traverse qui est dirigé vers la table de marge (8).
  2. Dispositif de correction de repérage selon la revendication 1, caractérisé en ce que
       le galet (21) est monté rotatif sur un levier (22) solidarisé avec la traverse (8) des preneurs.
  3. Dispositif de correction de repérage selon la revendication 2, caractérisé en ce que
       le levier (22) comprend un coussinet de pivotement (23) solidarisé en rotation avec l'arbre (10) de la traverse des preneurs et excentré par rapport à l'axe de ce dernier.
  4. Dispositif de correction de repérage selon la revendication 3, caractérisé en ce que
       la came (24) de réglage de la distance séparant la butée (21) et l'arbre (10) de la traverse des preneurs est réalisée sur un anneau (25) rotatif sur ce dernier.
  5. Dispositif de correction de repérage selon la revendication 4, caractérisé en ce que
       l'anneau (25) est relié à une vis de réglage (26) montée de manière axialement indéplaçable sur le bâti de la machine.
  6. Dispositif de correction de repérage selon les revendications 1 et 2, caractérisé en ce que
       le levier (22) assujetti au milieu de la traverse (8) des preneurs coopère avec un autre levier de butée (28) qui est monté en position fixe sur le bâti et qui est réglable à une position neutre, exempte de contrainte, de la traverse (8) des preneurs.
  7. Dispositif de correction de repérage selon la revendication 6, caractérisé en ce que
       la position neutre exempte de contrainte est ajustable sur des butées rotatives (29, 30) placées dans le levier (22) et dans le levier de butée (28).
EP89120537A 1988-12-03 1989-11-06 Dispositif de correction du repérage de la surimpression sur une feuille dans une rotative à feuilles Expired - Lifetime EP0372237B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3840870 1988-12-03
DE3840870 1988-12-03

Publications (3)

Publication Number Publication Date
EP0372237A2 EP0372237A2 (fr) 1990-06-13
EP0372237A3 EP0372237A3 (en) 1990-10-10
EP0372237B1 true EP0372237B1 (fr) 1995-04-26

Family

ID=6368455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89120537A Expired - Lifetime EP0372237B1 (fr) 1988-12-03 1989-11-06 Dispositif de correction du repérage de la surimpression sur une feuille dans une rotative à feuilles

Country Status (5)

Country Link
EP (1) EP0372237B1 (fr)
JP (1) JPH02200438A (fr)
CN (1) CN1013261B (fr)
CA (1) CA2000730C (fr)
DE (2) DE8816641U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19611124B4 (de) * 1996-03-21 2012-07-26 Heidelberger Druckmaschinen Ag Bogenübertragungseinrichtung einer Bogenrotationsdruckmaschine

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131887C1 (fr) * 1991-09-25 1993-01-07 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
JP3339515B2 (ja) * 1993-08-12 2002-10-28 株式会社小森コーポレーション 枚葉印刷機の紙搬送装置
DE9409890U1 (de) * 1994-06-18 1994-08-04 Heidelberger Druckmaschinen Ag, 69115 Heidelberg Vorrichtung zur Passerkorrektur an Bogenrotationsdruckmaschinen
DE4434624C2 (de) * 1994-09-28 1997-11-20 Heidelberger Druckmasch Ag Vorrichtung zur Passerkorrektur und zum Ausgleich verspannter Bogen im Anleger einer Bogenrotationsdruckmaschine
DE19503739C1 (de) * 1995-02-04 1996-04-04 Heidelberger Druckmasch Ag Vorrichtung zur Vermeidung von Passerfehlern
CN1084253C (zh) * 1999-01-19 2002-05-08 李青安 无叼纸自动快速续纸***
DE60004113T2 (de) 1999-02-26 2004-06-03 Komori Corporation Fördervorrichtung für bogenförmige Gegenstände in einer Bogenrotationsdruckmaschine
CH693951A5 (fr) * 2000-03-08 2004-05-14 Bobst Sa Dispositif pour l'alignement longitudinal d'elements en plaques dans une station d'introduction d'une machine les travaillant.
JP4496132B2 (ja) * 2005-06-08 2010-07-07 アキヤマインターナショナル株式会社 多色刷枚葉オフセット印刷機のスイング装置
CN101412296B (zh) * 2007-10-18 2011-02-16 李青安 前沿夹纸定位和一次性纸顶纸的模切压痕(烫印)机
DE102008060291B4 (de) 2007-12-13 2022-09-01 Heidelberger Druckmaschinen Ag Bogenbeschleunigungssystem für eine Bogendruckmaschine
CN103979328A (zh) * 2014-05-22 2014-08-13 邱浩 一种模切机的牙排送纸器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3504435A1 (de) * 1985-02-09 1986-08-14 Miller-Johannisberg Druckmaschinen Gmbh, 6200 Wiesbaden Bogen-druckmaschine mit bogenanlage an einem druckmaschinen-zylinder

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Publication number Priority date Publication date Assignee Title
US2577099A (en) * 1946-06-14 1951-12-04 Hoe & Co R Method of and means for registering impressions in multiunit sheet printing machines
DE1079077B (de) * 1956-12-07 1960-04-07 Schnellressenfab Heidelberg Bogenanleger fuer bogenverarbeitende Maschinen, insbesondere Druckmaschinen, mit hin- und herverschiebbaren Anlegemarken
CA936185A (en) * 1970-08-26 1973-10-30 North American Rockwell Corporation Means for overcoming fan-out in lithographic press
DE2052786A1 (de) * 1970-10-28 1972-05-04 North American Rockwell Corp , (n d Ges d Staates Delaware), Pitts burgh, Pa (V St A) Blattzubnngervornchtung fur Druck maschinen
JPS5935042B2 (ja) * 1977-09-26 1984-08-27 株式会社写研 写真植字機及びその類似機における位置決め方式

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3504435A1 (de) * 1985-02-09 1986-08-14 Miller-Johannisberg Druckmaschinen Gmbh, 6200 Wiesbaden Bogen-druckmaschine mit bogenanlage an einem druckmaschinen-zylinder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19611124B4 (de) * 1996-03-21 2012-07-26 Heidelberger Druckmaschinen Ag Bogenübertragungseinrichtung einer Bogenrotationsdruckmaschine

Also Published As

Publication number Publication date
CN1013261B (zh) 1991-07-24
DE8816641U1 (de) 1990-01-25
CN1043107A (zh) 1990-06-20
EP0372237A2 (fr) 1990-06-13
CA2000730C (fr) 1995-01-31
JPH02200438A (ja) 1990-08-08
CA2000730A1 (fr) 1990-06-03
DE58909200D1 (de) 1995-06-01
EP0372237A3 (en) 1990-10-10

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