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EP0257366B1 - Device for the registered positioning of a sheet on the feedboard of a rotary printing press - Google Patents

Device for the registered positioning of a sheet on the feedboard of a rotary printing press Download PDF

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Publication number
EP0257366B1
EP0257366B1 EP87111208A EP87111208A EP0257366B1 EP 0257366 B1 EP0257366 B1 EP 0257366B1 EP 87111208 A EP87111208 A EP 87111208A EP 87111208 A EP87111208 A EP 87111208A EP 0257366 B1 EP0257366 B1 EP 0257366B1
Authority
EP
European Patent Office
Prior art keywords
sheet
suction
suction rolls
rolls
feed table
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
EP87111208A
Other languages
German (de)
French (fr)
Other versions
EP0257366A3 (en
EP0257366A2 (en
Inventor
Claus Simeth
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.)
Manroland AG
Original Assignee
MAN Roland 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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Priority to AT87111208T priority Critical patent/ATE74870T1/en
Publication of EP0257366A2 publication Critical patent/EP0257366A2/en
Publication of EP0257366A3 publication Critical patent/EP0257366A3/en
Application granted granted Critical
Publication of EP0257366B1 publication Critical patent/EP0257366B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B65H9/14—Retarding or controlling the forward movement of articles as they approach stops
    • 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
    • B41F21/06—Suction-operated grippers

Definitions

  • the invention relates to a device for registering a sheet in the contact sheet of a sheet-fed rotary printing press according to the preamble of the first claim.
  • Suction rollers or the like viewed in the direction of sheet travel, in front of and in the vicinity of front marks in sections of the contact sheet with a fixed axis, i.e. rigidly arranged, are known per se, e.g. from DE-PS 1 152 707, DE-PS 2 330 484, DD-PS 128 414.
  • a subsequent lower sheet of a sheet relay can be conveyed and slowed down under suction, aligned, pulled downwards, but not the other, pulling upper sheet up or held up.
  • this is necessary for a safe separation of stuck together strongly adhering sheets fed to the printing press.
  • the advantage of the invention is that not only is a relative movement between the conveyor belt on the feed table and the device for registering the sheet in the feed sheet and thus the lower subsequent sheet is prevented, but it is introduced before the subsequent sheet in the covering means having front marks , the pulling sheet is pressed upwards or held up to separate it from the lower sheet below, whereby a safe separation of the two sheets can be achieved even at high machine speeds in connection with a perfect sheet system.
  • the separation of the two consecutive sheets can be further improved by combining rigid suction rollers and oscillating suction rollers with a deionization device.
  • suction rollers 1 swinging back and forth about a shaft 19 are arranged in sections 2 of the contact plate 3 in the sheet running direction in front of and in the vicinity of the front hooks 4.
  • the reciprocating suction rolls 1 are driven at the belt speed so that they always run exactly at this speed.
  • they are functionally connected to the drive of the belts 5 via a traction mechanism gear 12, for example a toothed belt drive.
  • the gearbox can also be designed so that it can be locked to compensate for tape slippage or drive losses.
  • the sheets to be fed to the contact marks of a printing press or the like can be conveyed, delayed or even brought to a standstill with a conveying speed which is conducive to the paper quality and sheet size and with a certain sheet spacing to achieve a safe alignment on the front and side marks for the sheet.
  • a number of non-described sheet retarding devices are suitable for accomplishing this task, which, with a certain outlay on machine elements, e.g. elliptical wheels, cams, curves, swinging wheel gears and the like.
  • the reciprocating suction rolls 1 are arranged one after the other according to the sheet format.
  • Each front mark 4 is assigned a reciprocating suction roll 1 or a corresponding pair of suction rolls.
  • the back and forth oscillating suction rollers 1 are fastened on a shaft 7 and can be driven in a two-armed lever 8 and a one-armed lever 9 so that they can pivot about a further shaft 19 in the system.
  • the second lever 9 is connected via a roller 10 to a rotatable eccentric 11.
  • the pivoting movement is cam-controlled via this gear 8, 10, 11, and the stroke and start of the pivoting movement can be adjustable in a known manner by appropriate adjustment of the eccentric 11, for example on different bends formats or paper qualities.
  • the lifting movement begins so in time and is controlled by the curve shape in such a way that the lower sheet 6 separated from the upper pulling sheet 13, first by lifting and holding it above the level of the contact sheet, can reach the front marks 4 as freely as possible by simultaneously carrying out a small transport by timely suction of the lower sheet 6 in the direction of the front marks 4 during the downward movement of the reciprocating suction rolls 1 and thus a tightening of this sheet 6 when it is inserted under the covering means of the front marks.
  • the pulling upper sheet 13 lies on the sheet 6 again at the latest when the subsequent lower sheet 6 bumps against the front marks 4, as a result of which the lowering sheet 13 is additionally smoothed out.
  • the reciprocating suction rolls 1 are provided on the circumference with suction nozzles 24 or the like. Bores in a known manner, through which the lower sheet 6 following the upper withdrawing sheet 13 is taken along with the rotation of the reciprocating suction rolls 1. Their surface is chosen so that they have the same coefficient of friction for all papers.
  • the suction point is chosen so that when the reciprocating suction rolls 1 are lowered from the upper reversal point, the lower subsequent sheet 6 initially runs onto the suction nozzles 24 and partially covers them. As soon as the suction nozzles 24 of the reciprocating suction rollers 1 have lowered to the level of the feed table, the suction air is switched on.
  • valves 14 which lie between a suction air source (not shown) and suction air chambers 15, which can be located, for example, within the suction rollers 1 which oscillate back and forth. Deviating from this, the timing of the suction air can also take place, for example, via a rotary slide valve with external air bore for rapid vacuum reduction or the like, which can be mounted on a shaft of a pneumatic side mark 16, not shown.
  • the level of the negative pressure can be adjusted in a known manner by hand or by motor using a control valve (not shown).
  • valves 14 are clocked only for as long as soon as the subsequent lower sheet 6 is below the front marks 4, the negative pressure can be greatly reduced or brought to zero.
  • FIG. 3 A particularly advantageous embodiment of the invention is shown schematically in FIG. 3.
  • rigid suction rolls 17 are additionally arranged in parallel over the entire sheet width.
  • the toothed belt drive 12 of the reciprocating suction rolls 1 takes place via the pivot point 20 of the rigid suction rolls 17.
  • the pivoting movement of the lifting suction rolls 1 is by means of an eccentric drive via a double-armed lever 22 pivotably mounted in the pivot point 20, the roll 10 and the adjustable eccentric 11 controllable.
  • the suction air is timed in such a way that the suction nozzles 24 of the rigid suction roller 17 suck the subsequent lower sheet 6 at an early stage.
  • An additional deionizing device 18 is installed between the reciprocating suction rollers 1 and the rigid suction rollers 17. The deionization device 18 is switched so that a constant discharge takes place. Such deionization devices are known per se and are therefore not described in detail.

Landscapes

  • Sheets, Magazines, And Separation Thereof (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Facsimiles In General (AREA)
  • Ticket-Dispensing Machines (AREA)

Abstract

A suction roll sheet transfer device disposed between a sheet feed table and the front lays of a sheet fed rotary printing press including a first set of suction rolls adapted for oscillating movement between a position substantially in the plane of said feed table for engaging successive sheets under suction pressure and transferring the sheet in register toward the front lays of the press and a raised position for engaging a preceeding sheet and separating it from the following sheet disposed therebelow, even when the sheets are in strongly adhering relation to each other during high speed printing operations. Suction pressure is communicated to the suction rolls in predetermined timed intervals, commencing upon retraction of the suction rolls substantially to the plane of the feed table. In a second embodiment, non-displaceable suction rolls are disposed immediately below the plane of the feeder plate upstream of the oscillating suction rolls for engaging successive sheets, under the influence of suction pressure, and guiding the sheets onto the oscillating suction rolls. In that embodiment, deionizers with air nozzles are disposed between the oscillating suction rolls and the non-displaceable suction rolls for directing a timed, pressurized air flow against successive sheets to facilitate separation of the partially overlapping sheets.

Description

Die Erfindung betrifft eine Vorrichtung zur registerhaltigen Anlage eines Bogens im Anlegeblech einer Bogenrotationsdruckmaschine nach dem Oberbegriff des ersten Anspruches.The invention relates to a device for registering a sheet in the contact sheet of a sheet-fed rotary printing press according to the preamble of the first claim.

Saugrollen oder dgl. in Bogenlaufrichtung gesehen vor und in der Nähe von Vordermarken in Ausschnitten des Anlegebleches mit ortsfester Achse, d.h. starr angeordnet, sind an sich bekannt, z.B. aus DE-PS 1 152 707, DE-PS 2 330 484, DD-PS 128 414. Mit derartigen Saugrollen kann zwar ein nachfolgender unterer Bogen einer Bogenstaffel unter Saugwirkung gefördert und verlangsamt, ausgerichtet, nach unten gezogen werden, jedoch nicht der andere, abziehende obere Bogen nach oben gedrückt bzw. oben gehalten werden. Dies ist aber für eine sichere Trennung gestaffelt der Druckmaschine zugeführter stark aneinander haftender Bogen erforderlich.Suction rollers or the like, viewed in the direction of sheet travel, in front of and in the vicinity of front marks in sections of the contact sheet with a fixed axis, i.e. rigidly arranged, are known per se, e.g. from DE-PS 1 152 707, DE-PS 2 330 484, DD-PS 128 414. With such suction rollers, a subsequent lower sheet of a sheet relay can be conveyed and slowed down under suction, aligned, pulled downwards, but not the other, pulling upper sheet up or held up. However, this is necessary for a safe separation of stuck together strongly adhering sheets fed to the printing press.

Aus der US-A-2 160 906 ist es bereits bekannt, durch unter dem Anlegetisch angeordnete Sauger die Vereinzelung von überlappend zugeführten Bogen zu unterstützen.From US-A-2 160 906 it is already known to support the separation of sheets fed overlapping by suction cups arranged under the feed table.

Es ist Aufgabe der Erfindung, bei einer Vorrichtung genannter Art die registerhaltige Zufuhr des Bogens nach dem Anlegetisch im Bereich der Anlage bei hohen Maschinengeschwindigkeiten sowie ein exaktes Anlegen der Bogenvorderkante an den Vordermarken bei einwandfreier Trennung stark haftender, aufeinander liegender Bogen zu ermöglichen.It is an object of the invention to enable the sheet to be fed in register to the feed table in the area of the system at high machine speeds and an exact application of the sheet leading edge to the front marks with a good separation of strongly adhering sheets lying on one another in a device of the type mentioned.

Die Lösung der gestellten Aufgabe wird bei einer Vorrichtung der eingangs genannten Art durch die im Anspruch 1 genannten kennzeichnenden Merkmale erreicht. Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.The object is achieved in a device of the type mentioned by the characterizing features mentioned in claim 1. Further developments of the invention result from the subclaims.

Der Vorteil der Erfindung besteht darin, daß nicht nur eine Relativbewegung zwischen dem Bändertranport am Anlegetisch und der Vorrichtung zur registerhaltigen Anlage des Bogens im Anlegeblech und somit dem unteren nachfolgenden Bogen verhindert wird, sondern es wird bevor der nachfolgende Bogen in die Abdeckmittel aufweisenden Vordermarken eingeführt ist, der abziehende Bogen zur Trennung vom unteren nachfolgenden Bogen nach oben gedrückt bzw. oben gehalten, wodurch eine sichere Trennung der beiden Bogen auch bei hohen Maschinengeschwindigkeiten in Verbindung mit einer einwandfreien Bogenanlage erreichbar ist. Gemäß einer besonders vorteilhaften Ausbildung der Erfindung kann durch Kombination von starren Saugrollen und hin- und herschwingenden Saugrollen mit einer Entionisierungsvorrichtung die Trennung beider aufeinander folgender Bogen weiter verbessert werden.The advantage of the invention is that not only is a relative movement between the conveyor belt on the feed table and the device for registering the sheet in the feed sheet and thus the lower subsequent sheet is prevented, but it is introduced before the subsequent sheet in the covering means having front marks , the pulling sheet is pressed upwards or held up to separate it from the lower sheet below, whereby a safe separation of the two sheets can be achieved even at high machine speeds in connection with a perfect sheet system. According to a particularly advantageous embodiment of the invention, the separation of the two consecutive sheets can be further improved by combining rigid suction rollers and oscillating suction rollers with a deionization device.

Nachfolgend wird die Erfindung anhand einer schematischen Zeichnung in Ausführungsbeispielen näher beschrieben.The invention is described in more detail below with reference to a schematic drawing in exemplary embodiments.

Es zeigt:

Fig. 1
einen Längsschnitt durch Anlage und Anlegetisch in einer ersten Ausführung,
Fig. 2
eine Draufsicht auf Fig. 1,
Fig. 3
einen Längsschnitt durch Anlage und Anlegetisch in einer zweiten Ausführung, schematisch.
It shows:
Fig. 1
a longitudinal section through the system and feed table in a first embodiment,
Fig. 2
2 shows a plan view of FIG. 1,
Fig. 3
a longitudinal section through the system and feed table in a second embodiment, schematically.

Gemäß Fig. 1 und 2 sind um eine Welle 19 hin- und herschwingende Saugrollen 1 in Ausschnitten 2 des Anlegebleches 3 in Bogenlaufrichtung gesehen vor und in der Nähe der Vordermaken 4 angeordnet. Die hin- und herschwingenden Saugrollen 1 werden mit Bändergeschwindigkeit angetrieben, so daß sie immer exakt diese Geschwindigkeit laufen. Hierzu sind sie über ein Zugmittelgetriebe 12, z.B. einen Zahnriementrieb funktionell mit dem Antrieb der Bänder 5 verbunden. Dadurch treten keine schädlichen Reibungskräfte zwischen den hin- und herschwingenden Saugrollen 1 und dem nachfolgenden unteren Bogen 6 bei der registerhaltigen Zufuhr des Bogens nach dem Anlegetisch im Bereich der Anlage auf. Das Getriebe kann auch so ausgelegt werden, daß es gesperrt werden kann, um auftretenden Bandschlupf bzw. Antriebsverluste auszugleichen.1 and 2, suction rollers 1 swinging back and forth about a shaft 19 are arranged in sections 2 of the contact plate 3 in the sheet running direction in front of and in the vicinity of the front hooks 4. The reciprocating suction rolls 1 are driven at the belt speed so that they always run exactly at this speed. For this purpose, they are functionally connected to the drive of the belts 5 via a traction mechanism gear 12, for example a toothed belt drive. Thereby there are no harmful frictional forces between the reciprocating suction rolls 1 and the subsequent lower sheet 6 when the sheet is fed in register after the feed table in the area of the system. The gearbox can also be designed so that it can be locked to compensate for tape slippage or drive losses.

Es wird ferner als bekannt vorausgesetzt und nicht näher beschrieben, daß die den Anlegemarken einer Druckmaschine oder dgl. Maschine zuzuführenden Bogen mit einer der Papierqualität und Bogengröße zuträglichen Fördergeschwindigkeit und mit einem gewissen Bogenabstand gefördert, verzögert oder sogar für eine bestimmte Zeit zum Stillstand gebracht werden können, um eine sichere Ausrichtung an den Vorder- und Seitenmarken für den Bogen zu erreichen. Zur Bewältigung dieser Aufgabe sind eine Anzahl nicht beschriebener Bogenverlangsamungseinrichtungen geeignet, die mit einem bestimmten Aufwand an Maschinenelementen, z.B. elliptischen Rädern, Nocken, Kurven, schwingenden Rädergetrieben und dgl. arbeiten.It is also assumed to be known and not described in more detail that the sheets to be fed to the contact marks of a printing press or the like can be conveyed, delayed or even brought to a standstill with a conveying speed which is conducive to the paper quality and sheet size and with a certain sheet spacing to achieve a safe alignment on the front and side marks for the sheet. A number of non-described sheet retarding devices are suitable for accomplishing this task, which, with a certain outlay on machine elements, e.g. elliptical wheels, cams, curves, swinging wheel gears and the like.

Die hin- und herschwingenden Saugrollen 1 werden entsprechend dem Bogenformat hintereinander angeordnet. Jeder Vordermarke 4 ist jeweils eine hin- und herschwingende Saugrolle 1 oder ein entsprechendes Saugrollenpaar zugeordnet. Die hin- und herschwingende Saugrollen 1 sind dabei auf einer Welle 7 befestigt und in einem zweiarmigen Hebel 8 sowie einem einarmigen Hebel 9 um eine weitere Welle 19 in der Anlage schwenkbar gelagert antreibbar. Der zweite Hebel 9 steht über eine Rolle 10 mit einem drehbaren Exzenter 11 in Verbindung. Die Schwenkbewegung wird über dieses Getriebe 8, 10, 11 kurvengesteuert, wobei Hub und Einsatzbeginn der Schwenkbewegung in bekannter Weise durch entsprechende Verstellung des Exzenters 11 einstellbar sein können, z.B. auf unterschiedliche Bogen formate oder Papierqualitäten. Dadurch kann ein definiertes Schwenken aus der gehobenen in eine gesenkte gestrichelt gezeichnete Stellung, d.h. nach vorn und außerdem wieder zurück in die Ausgangslage erfolgen. Die Hubbewegung beginnt dabei so rechtzeitig und wird durch die Kurvenform derart gesteuert, daß der vom oberen abziehenden Bogen 13 zunächst durch dessen Anheben und Halten oberhalb der Ebene des Anlegebleches getrennte untere Bogen 6 möglichst ungehindert in die Vordermarken 4 gelangen kann, indem zugleich ein kleiner Transport durch zeitgerechtes Ansaugen des unteren Bogens 6 in Richtung der Vordermarken 4 bei der Abwärtsbewegung der hin- und herschwingenden Saugrollen 1 und somit eine Straffung dieses Bogens 6 beim Einführen unter die Abdeckmittel der Vordermarken stattfindet. Der abziehende obere Bogen 13 legt sich spätestens beim Anstoßen des nachfolgenden unteren Bogens 6 an die Vordermarken 4 wieder auf den Bogen 6 auf, wodurch dieser vom sich senkenden Bogen 13 zusätzlich glatt gestrichen wird.The reciprocating suction rolls 1 are arranged one after the other according to the sheet format. Each front mark 4 is assigned a reciprocating suction roll 1 or a corresponding pair of suction rolls. The back and forth oscillating suction rollers 1 are fastened on a shaft 7 and can be driven in a two-armed lever 8 and a one-armed lever 9 so that they can pivot about a further shaft 19 in the system. The second lever 9 is connected via a roller 10 to a rotatable eccentric 11. The pivoting movement is cam-controlled via this gear 8, 10, 11, and the stroke and start of the pivoting movement can be adjustable in a known manner by appropriate adjustment of the eccentric 11, for example on different bends formats or paper qualities. As a result, a defined pivoting from the raised position to the lowered dashed position, ie to the front and back again to the starting position. The lifting movement begins so in time and is controlled by the curve shape in such a way that the lower sheet 6 separated from the upper pulling sheet 13, first by lifting and holding it above the level of the contact sheet, can reach the front marks 4 as freely as possible by simultaneously carrying out a small transport by timely suction of the lower sheet 6 in the direction of the front marks 4 during the downward movement of the reciprocating suction rolls 1 and thus a tightening of this sheet 6 when it is inserted under the covering means of the front marks. The pulling upper sheet 13 lies on the sheet 6 again at the latest when the subsequent lower sheet 6 bumps against the front marks 4, as a result of which the lowering sheet 13 is additionally smoothed out.

Die hin- und herschwingenden Saugrollen 1 sind am Umfang mit Saugdüsen 24 oder dgl. Bohrungen in bekannter Weise versehen, durch die der dem oberen abziehenden Bogen 13 nachfolgende untere Bogen 6 unter Drehung der hin- und herschwingenden Saugrollen 1 mitgenommen wird. Deren Oberfläche ist so gewählt, daß sie für alle Papiere den gleichen Reibungskoeffizienten besitzen. Der Ansaugpunkt wird so gewählt, daß beim Absenken der hin- und herschwingenden Saugrollen 1 aus dem oberen Umkehrpunkt der untere nachfolgende Bogen 6 zunächst auf die Saugdüsen 24 aufläuft und diese teilweise überdeckt. Sobald die Saugdüsen 24 der hin- und herschwingenden Saugrollen 1 sich auf die Ebene des Anlegetisches abgesenkt haben, wird die Saugluft zugeschaltet.The reciprocating suction rolls 1 are provided on the circumference with suction nozzles 24 or the like. Bores in a known manner, through which the lower sheet 6 following the upper withdrawing sheet 13 is taken along with the rotation of the reciprocating suction rolls 1. Their surface is chosen so that they have the same coefficient of friction for all papers. The suction point is chosen so that when the reciprocating suction rolls 1 are lowered from the upper reversal point, the lower subsequent sheet 6 initially runs onto the suction nozzles 24 and partially covers them. As soon as the suction nozzles 24 of the reciprocating suction rollers 1 have lowered to the level of the feed table, the suction air is switched on.

Die zeitliche Steuerung der Saugluft der hin- und herschwingenden Saugrollen 1 erfolgt dabei in bekannter Weise durch Ventile 14, die zwischen einer nicht gezeichneten Saugluftquelle und Saugluftkammern 15 liegen, die sich z.B. innerhalb der hin- und herschwingenden Saugrollen 1 befinden können. Die zeitliche Steuerung der Saugluft kann aber abweichend davon z.B. auch über ein Drehschieberventil mit Fremdluftbohrung für schnellen Unterdruckabbau oder dgl. erfolgen, das auf einer nicht dargestellten Welle einer pneumatischen Seitenmarke 16 montiert werden kann.The timing of the suction air of the back and forth Suction rollers 1 are carried out in a known manner by valves 14 which lie between a suction air source (not shown) and suction air chambers 15, which can be located, for example, within the suction rollers 1 which oscillate back and forth. Deviating from this, the timing of the suction air can also take place, for example, via a rotary slide valve with external air bore for rapid vacuum reduction or the like, which can be mounted on a shaft of a pneumatic side mark 16, not shown.

Die Höhe des Unterdruckes kann von Hand oder motorisch über ein nicht gezeichnetes Regelventil in bekannter Weise verstellt werden.The level of the negative pressure can be adjusted in a known manner by hand or by motor using a control valve (not shown).

Die Ventile 14 werden taktmäßig nur solange beaufschlagt, daß sobald der nachfolgende untere Bogen 6 unter den Vordermarken 4 liegt, der Unterdruck stark reduziert bzw. auf Null gebracht werden kann.The valves 14 are clocked only for as long as soon as the subsequent lower sheet 6 is below the front marks 4, the negative pressure can be greatly reduced or brought to zero.

Dies hat den Vorteil, daß für den seitlichen Ausrichtevorgang an der pneumatischen Seitenmarke 16 keine erhöhten Reibkräfte auf dem Anlegetisch auftreten, jedoch ein leichter Transport in Richtung der Vordermarken 4 noch vorhanden ist.This has the advantage that no increased frictional forces occur on the feed table for the lateral alignment process on the pneumatic side mark 16, but easy transport in the direction of the front marks 4 is still present.

In Fig. 3 ist eine besonders vorteilhafte Ausführung der Erfindung schematisch dargestellt. Vor den hin- und herschwingenden Saugrollen 1 sind hier über die ganze Bogenbreite verteilt zusätzlich starre Saugrollen 17 parallel angeordnet. Der Zahnriemenantrieb 12 der hin- und herschwingenden Saugrollen 1 erfolgt dabei über den Drehpunkt 20 der starren Saugrollen 17. Die Schwenkbewegung der Hubsaugrollen 1 ist mittels Exzentertrieb über einen im Drehpunkt 20 schwenkbar gelagerten doppelarmigen Hebel 22, die Rolle 10 sowie den verstellbaren Exzenter 11 steuerbar. Die zeitliche Steuerung der Saugluft erfolgt derart, daß die Saugdüsen 24 der starren Saugrolle 17 den nachfolgenden unteren Bogen 6 bereits frühzeitig ansaugen. Zwischen den hin- und herschwingenden Saugrollen 1 und den starren Saugrollen 17 ist zusätzlich eine Entionisierungsvorrichtung 18 eingebaut. Die Entionisierungsvorrichtung 18 ist so geschaltet, daß eine ständige Entladung stattfindet. Derartige Entionisierungsvorrichtungen sind an sich bekannt und werden deshalb nicht näher beschrieben.A particularly advantageous embodiment of the invention is shown schematically in FIG. 3. In front of the reciprocating suction rolls 1, rigid suction rolls 17 are additionally arranged in parallel over the entire sheet width. The toothed belt drive 12 of the reciprocating suction rolls 1 takes place via the pivot point 20 of the rigid suction rolls 17. The pivoting movement of the lifting suction rolls 1 is by means of an eccentric drive via a double-armed lever 22 pivotably mounted in the pivot point 20, the roll 10 and the adjustable eccentric 11 controllable. The suction air is timed in such a way that the suction nozzles 24 of the rigid suction roller 17 suck the subsequent lower sheet 6 at an early stage. An additional deionizing device 18 is installed between the reciprocating suction rollers 1 and the rigid suction rollers 17. The deionization device 18 is switched so that a constant discharge takes place. Such deionization devices are known per se and are therefore not described in detail.

Parallel zur ständigen Entlastung der Entionisierungsvorrichtung 18 wird getaktet Luft zwischen den abziehenden oberen Bogen 13 und den nachfolgenden unteren Bogen 6 geblasen. Der Strahlwinkel ist so gewählt, daß der gerichtete Luftstrahl den abziehenden oberen Bogen bereits frühzeitig abhebt und von ihm reflektiert wird, ohne daß der bekannte Bernoulli-Effekt zwischen beiden Bogen 6, 13 auftritt. Kurz bevor der nachfolgende untere Bogen 6 Blasluftdüsen 21 der Entionisierungsvorrichtung 18 abdeckt, wird die Blasluft über ein Ventil 23 abgeschaltet.In parallel to the constant relief of the deionization device 18, air is blown in a clocked manner between the withdrawing upper sheet 13 and the subsequent lower sheet 6. The jet angle is selected so that the directed air jet lifts off the upper sheet which is being drawn off at an early stage and is reflected by it without the known Bernoulli effect occurring between the two sheets 6, 13. Shortly before the subsequent lower sheet 6 covers blown air nozzles 21 of the deionization device 18, the blown air is switched off via a valve 23.

Sollte die elektrostatische Aufladung so hoch sein, daß der nachfolgende untere Bogen 6 nach dem Passieren der starren Saugrolle 17 wieder an den abziehenden oberen Bogen 13 springt, fangen die hin- und herschwingenden Saugrollen 1 das freie Bogenteil und ziehen es nach unten. Der weitere Bogentransport erfolgt in gleicher Weise wie bereits vorstehend bei der ersten Ausführungsform der Erfundung beschrieben.If the electrostatic charge is so high that the subsequent lower sheet 6 jumps back to the pulling upper sheet 13 after passing through the rigid suction roll 17, the reciprocating suction rolls 1 catch the free sheet part and pull it down. The further sheet transport takes place in the same way as already described above for the first embodiment of the invention.

Mit der erfindungsgemäßen Lösung ist es möglich, mehr oder weniger stark aneinander haftende Bögen 6, 13 zu trennen und dabei die registerhaltige Zufuhr des Bogens nach dem Anlegetisch ohne Relativbewegung zwischen dem Bandtransport und der Bogenfangvorrichtung in Verbindung mit der zeitlichen Steuerung der Saugluft mittels der hin- und herschwingenden Saugrollen 1, vorteilhaft kombiniert mit den starren Saug rollen 17 und der Entionisierungsvorrichtung 18 zu gewährleisten.With the solution according to the invention, it is possible to separate sheets 6, 13 which are more or less strongly adhering to one another and thereby the register-based feeding of the sheet after the feed table without relative movement between the tape transport and the sheet catching device in connection with the time Control of the suction air by means of the reciprocating suction rollers 1, advantageously combined with the rigid suction rollers 17 and the deionization device 18 to ensure.

BezugszeichenlisteReference symbol list

11
hin- und herschwingende Saugrollenoscillating suction rolls
22nd
AusschnitteCutouts
33rd
AnlegeblechSheet
44th
VordermarkenFront brands
55
BänderTapes
66
nachfolgender unterer Bogensubsequent lower arch
77
Wellewave
88th
zweiarmiger Hebeltwo-armed lever
99
einarmiger Hebelone-armed lever
1010th
Rollerole
1111
Exzentereccentric
1212
ZahnriementriebTiming belt drive
1313
abziehender oberer Bogenpeeling upper arch
1414
VentileValves
1515
SaugluftkammernSuction air chambers
1616
pneumatische Seitenmarkepneumatic side mark
1717th
starre Saugrollenrigid suction rolls
1818th
EntionisierungsvorrichtungDeionization device
1919th
Wellewave
2020th
Drehpunktpivot point
2121
BlasluftdüsenBlow air nozzles
2222
doppelarmiger Hebeldouble-armed lever
2323
VentilValve
2424th
SaugdüsenSuction nozzles

Claims (5)

  1. Device for the registered positioning of a sheet (13, 6) fed in overlapping formation which is arranged below a feed table (3) in front of front lays (4) of a rotary sheet printing press and which has, in front of seen in the direction of sheet running and in the region of, the front lays (4) suction rolls (1) with suction nozzles (24) to which suction can be fed with controlled timing which is adjustable in terms of its reduced pressure,
    characterised in that
    - the suction rolls (1) are swingable below the sheet between a lower and upper turnround point in and against the direction of sheet running above the plane of the feed table (3)
    - the oscillating movement is so controllable that a pulling action can be exerted on the sheet (13) being pulled off
    - the suction air can be switched on to grasp the lower following sheet (6) in the nearer region of the lower turnround point and
    - the suction rolls (1) can be driven with the speed of endlessly circulating belts (5) of the feed table via an entrainment gear (12) or the like.
  2. Device according to Claim 1, characterised in that prior to, seen in the sheet running direction, and in the region of the to and fro oscillating suction rolls (1) fixed suction rolls (17) are arranged between which a blown air deionization device (18) is arranged, that the to and fro oscillating suction rolls (1) and the fixed suction rolls (17) can be driven with the speed of the endless belts (5) of the feed table by means of entrainment drives (12) and that timed deionized blown air can be blown in between the upper sheet (13) being pulled off as well as the next following lower sheet (6) which can be transported under the action of suction and can be switched off controlled in time shortly before the next following lower sheet (6) covers blowing air nozzles (21) of the blown air deionization device (18).
  3. Device according to Claim 1, characterised in that the drive to the to and fro oscillating suction rolls (1) takes place via the turning point of a shaft (19) mounted with a fixed position axis in the feed table.
  4. Device according to Claim 2, characterised in that the drive of the to and fro oscillating suction rolls (1) takes place via the turning point (20) of the fixed suction rolls (17).
  5. Device according to Claims 1 to 4, characterised in that the swinging movement of the to and fro oscillating suction rolls (1) is controllable adjustably in terms of stroke and the commencement of movement by means of an eccentric drive (8, 10, 11; 22, 10, 11).
EP87111208A 1986-08-27 1987-08-04 Device for the registered positioning of a sheet on the feedboard of a rotary printing press Expired - Lifetime EP0257366B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87111208T ATE74870T1 (en) 1986-08-27 1987-08-04 DEVICE FOR REGISTERING A SHEET IN THE FEED PLATE OF A ROTARY PRINTING PRESS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863629080 DE3629080A1 (en) 1986-08-27 1986-08-27 DEVICE FOR REGISTERING PLANTS IN A BOW PLATE OF A ROTARY PRINTING MACHINE
DE3629080 1986-08-27

Publications (3)

Publication Number Publication Date
EP0257366A2 EP0257366A2 (en) 1988-03-02
EP0257366A3 EP0257366A3 (en) 1990-01-24
EP0257366B1 true EP0257366B1 (en) 1992-04-15

Family

ID=6308262

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87111208A Expired - Lifetime EP0257366B1 (en) 1986-08-27 1987-08-04 Device for the registered positioning of a sheet on the feedboard of a rotary printing press

Country Status (5)

Country Link
US (1) US4824094A (en)
EP (1) EP0257366B1 (en)
JP (1) JPH0615238B2 (en)
AT (1) ATE74870T1 (en)
DE (1) DE3629080A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2276871B (en) * 1993-04-07 1997-04-23 Licentia Gmbh Method of and apparatus for separately removing flat articles from a stack
DE19906501B4 (en) * 1999-02-17 2005-08-25 Koenig & Bauer Ag Device for feeding sheets
DE10017251A1 (en) * 2000-04-06 2001-10-11 Ltg Mailaender Gmbh Device for the bow system
DE10056018B4 (en) * 2000-11-11 2014-03-13 Koenig & Bauer Aktiengesellschaft Device for supporting bowing and sheet storage
US20020074713A1 (en) * 2000-12-18 2002-06-20 Gbr Systems Corporation Anti-static sheet feeding mechanism
CN100572233C (en) * 2005-02-01 2009-12-23 海德堡印刷机械股份公司 Be used for handling generation air blowing of machine beat ground or the air-breathing device that page or leaf is opened
SG144008A1 (en) * 2007-01-04 2008-07-29 Nanyang Polytechnic Parts transfer system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD128414A1 (en) * 1976-09-21 1977-11-16 Reinhard Naumann DEVICE FOR ALIGNING THE FRONT EDGE OF WORKPIECES, IN PARTICULAR PRINTED ARC
DE2330484C3 (en) * 1973-06-15 1980-08-14 Koenig & Bauer Ag, 8700 Wuerzburg Device for creating and feeding individual, flaked sheets in sheet-fed rotary thinning machines

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3190644A (en) * 1962-12-12 1965-06-22 Mabeg Maschinenbau Gmbh Nachf Sheet-feeding device
US2160906A (en) * 1936-01-23 1939-06-06 Faber & Schleicher A G Sheet feeding and registering device
US2285076A (en) * 1939-08-11 1942-06-02 Backhouse Headley Townsend Sheet feeder
DE964146C (en) * 1951-08-22 1957-05-16 Headley Townsend Backhouse Sheet feeder for printing and other machines
DE1152707B (en) * 1961-12-27 1963-08-14 Mabeg Maschb G M B H Nachf Hen Effective arc deceleration and alignment device between the feeder table and the front lays
DE2313150C3 (en) * 1973-03-16 1981-12-24 Koenig & Bauer AG, 8700 Würzburg Sheet feed for sheet-fed rotary printing machines

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2330484C3 (en) * 1973-06-15 1980-08-14 Koenig & Bauer Ag, 8700 Wuerzburg Device for creating and feeding individual, flaked sheets in sheet-fed rotary thinning machines
DD128414A1 (en) * 1976-09-21 1977-11-16 Reinhard Naumann DEVICE FOR ALIGNING THE FRONT EDGE OF WORKPIECES, IN PARTICULAR PRINTED ARC

Also Published As

Publication number Publication date
EP0257366A3 (en) 1990-01-24
EP0257366A2 (en) 1988-03-02
JPS6360755A (en) 1988-03-16
DE3629080C2 (en) 1988-11-10
ATE74870T1 (en) 1992-05-15
JPH0615238B2 (en) 1994-03-02
DE3629080A1 (en) 1988-03-10
US4824094A (en) 1989-04-25

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