EP0006522A1 - Method of and apparatus for opening folded printed sheets - Google Patents

Method of and apparatus for opening folded printed sheets Download PDF

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Publication number
EP0006522A1
EP0006522A1 EP79101877A EP79101877A EP0006522A1 EP 0006522 A1 EP0006522 A1 EP 0006522A1 EP 79101877 A EP79101877 A EP 79101877A EP 79101877 A EP79101877 A EP 79101877A EP 0006522 A1 EP0006522 A1 EP 0006522A1
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EP
European Patent Office
Prior art keywords
sheet
air suction
blowing air
printed sheets
printed
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
EP79101877A
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German (de)
French (fr)
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EP0006522B1 (en
Inventor
Horst Rathert
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.)
Rahdener Maschinenfabrik August Kolbus GmbH and Co KG
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Rahdener Maschinenfabrik August Kolbus GmbH and Co KG
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Publication of EP0006522A1 publication Critical patent/EP0006522A1/en
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Publication of EP0006522B1 publication Critical patent/EP0006522B1/en
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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
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/30—Opening devices for folded sheets or signatures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/446—Assisting moving, forwarding or guiding of material
    • B65H2301/4461—Assisting moving, forwarding or guiding of material by blowing air towards handled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/12—Means using fluid made only for exhausting gaseous medium producing gas blast
    • B65H2406/122—Nozzles

Definitions

  • the invention relates to a method and a device for opening folded printed sheets, in particular for placing on the conveyor saddle of a book stitching machine, in which the printed sheet is guided past devices for spreading out the individual sheet parts one after the other to the opening point.
  • a device for opening folded sheet layers, a device is known from DE-AS 10 99 988, in which a cylindrical pair of suction rolls and behind this in the transport direction are located below a belt conveyor path, between which an open sheet is held and transported in the closed state, and on both sides of the transport plane another conical suction roller pair are provided. Between the suction roller pairs there are sheet deflectors which form the transition from the vertical conveying plane of the first pair of suction rollers to the inclined lateral surface of the subsequent pair of suction rollers and which guide the outer sheet parts covered by the first pair of suction rollers behind the sheet deflectors.
  • the sheet parts are kept out of the effective range of the second pair of suction rolls by means of the sheet deflectors, the subsequent sheet parts are grasped and passed over further sheet deflectors in order to ultimately feed the printed sheet thus opened to a support saddle of a downstream machine.
  • a corresponding number of suction roller pairs can be arranged and connected to one another by sheet deflectors.
  • a program control enables the individual suction rolls to be switched on and off automatically according to a defined program.
  • the device for opening folded sheet layers illustrated and described in DE-AS 10 99 988 has proven to be unsatisfactory insofar as it does not allow the opening of any kind of layers.
  • a layer with cross fold i.e. Layers that are partially closed at the head or foot cannot be guided through the layers by suction rolls and sheet deflectors.
  • suction rolls and sheet deflectors Although some of these types of folds folded in cross fold allow suction rolls and sheet deflectors to be passed through from one side, opening in the middle by means of this device is then only possible with a corresponding contact edge in the downstream machine, which can be a book thread stitching machine, for example, the contact edge depending can be front or back according to the manufacturer.
  • suction rolls used in this device are not capable, all paper sorters occurring. to process. Due to the suction effect in layers of porous paper, several sheet parts are often sucked in at the same time, which leads to not inconsiderable disruptions in the production process.
  • a device for the central opening of cross-folded printed sheets is shown with a sheet conveyor designed as a conveyor belt, which is arranged beneath a plurality of rotating suction cups for lifting and tipping over the free sheet parts not held by the conveyor to the opening point , and with acting on the main fold and for gripping the free edge of the lower half of the opened sheet Grippers.
  • Either photoelectric light barriers or program control can be used to control the suction effect.
  • the printed sheet is transferred to a saddle, for example a book sewing machine, the free sheet parts not held by the conveyor belt being held up by a guide plate.
  • both the opening device according to DE-AS 10 99 988 and that according to DE-PS 19 45 501 set limits with regard to an increase in the number of cycles, since in each case the opening process at an opening station must be ended before a subsequent printed sheet arrives can.
  • the invention has for its object to provide a method and an apparatus of the type mentioned, which make it possible that all layers and types of paper can be processed, regardless of the sheet format, and with which a significant increase in the number of cycles compared to the known opening devices is achieved.
  • the method according to the invention provides that an openable, folded printed sheet is guided past blowing air suction devices and the free area of the respective outer sheet parts through the Suction effect of the blown air is sucked in and spread out from the rest of the printed sheet and that the spread-out sheet part is drawn out of the effective area of a downstream blow air suction device for sucking in a following sheet part.
  • the printed sheets are advantageously transported past the blown air suction devices with a sheet corner ahead and the opening takes place via a printed sheet corner. According to a further feature of the process, the printed sheets can be transported in a scale-like manner past the blown air suction devices. It is also advantageous if the arc parts are spread apart by approximately 15 °.
  • the device for carrying out the method is based on a conveying device for transporting the printed sheets along devices arranged one behind the other for spreading the individual sheet parts one after the other up to the opening point and is characterized in that the devices for spreading the sheet parts consist of blowing air suction plates arranged on the side of the sheet transport plane Sheet transport plane inclined suction surfaces inclined at a narrow angle, in which blowing air nozzles directed towards the free areas of the sheet parts are arranged, and in that downstream of the blowing air suction plates, the spread sheet part leading from the effective area of a subsequent blowing air suction plate are provided.
  • the devices for spreading the sheet parts consist of blowing air suction plates arranged on the side of the sheet transport plane Sheet transport plane inclined suction surfaces inclined at a narrow angle, in which blowing air nozzles directed towards the free areas of the sheet parts are arranged, and in that downstream of the blowing air suction plates, the spread sheet part leading from the effective area of a subsequent blowing air suction plate are provided.
  • the blowing air suction plates can be designed in a wedge shape and the sheet deflectors can each be formed by the rear of a downstream blowing air suction plate and by a dividing tip upstream of these plates. It is also advantageous that the blowing air nozzles are directed counter to the direction of sheet travel, towards the sheet corner to be opened, and emerge from the suction surface at an angle of approximately 15 °. According to a further feature, the blowing air nozzles can be arranged in a line that rises against the running direction. Furthermore, the blowing air nozzles can have a depression on the outlet side.
  • the device for performing the method starting from a Bo Genanleger for separating the printed sheets and for feeding to a conveyor, characterized in that the feeder is arranged inclined to the conveyor in such a way that the printed sheets enter the conveyor with a sheet corner ahead.
  • the device for opening folded printed sheets 1 essentially consists of a conveying device 2 and a plurality of blow air suction devices 3 located one behind the other of the movement path of the printed sheets.
  • the closed printed sheets 1 are passed endlessly, the sheets between clamping conveyor belts are clamped and are transported with their back upwards and with a sheet corner ahead of the air suction devices. It has proven to be advantageous to run the printed sheets in the form of scales in order to significantly increase the number of cycles. In addition, this diagonal transport enables processing of all types of folds, since the printed sheets can be opened via a sheet corner.
  • the devices for opening the printed sheets consist of wedge-shaped blowing air suction plates installed on the side of the plane of movement of the printed sheets 1 on a support part 8, with a suction surface 5 with a row directed towards the sheet corner to be opened and inclined at approximately 15 ° of blowing air nozzles 6, which are connected to a compressed air source, not shown.
  • the outer part of the layer is sucked onto surface 5 as a result of the so-called hydrodynamic paradox and is deflected by approximately 15 °.
  • the first sheet part spread apart from the remaining layer is placed behind the following blowing air suction plate, i.e. steered on its back 5 '.
  • the following blowing air suction plate i.e. steered on its back 5 '.
  • deflection devices in the form of divider tips 7 arranged in front of the suction plates.
  • the position of the nozzle bores 6 in the suction plates was indicated in FIG. 1 by the dashed arrows representing the air outlet.
  • the nozzle bores are directed counter to the direction of travel of the printed sheets towards the sheet corner to be opened and are arranged at an angle of 15 ° to the suction surface 5, as illustrated in FIG. 3, which is useful for an optimal blowing-suction effect.
  • the nozzle bores 6 are still in a line that rises against the direction of travel, which allows the outer part of the printing sheet to be gradually drawn up to its corner, starting at the first nozzle closest to the printing sheet.
  • the opening device can manage with a minimum of blown air.
  • the nozzle bores were additionally equipped with countersinks 6 '.
  • the conveying device can be designed to be height-adjustable in a manner known per se and therefore not described, based on the feeder.
  • a folded printed sheet which is to be understood as any type of position, is to be placed astride a support saddle 11 of a book stitching machine, for example, the initially closed sheet is transported by the conveying device 2 past a first blowing air suction device and a first external sheet part is thereby passed through the blowing Pull-off effect spread apart from the rest of the printed sheet at its opening corner and steered behind it itself by means of the dividing tip of a subsequent blowing air suction device during further transport.
  • a second, in turn external sheet part arrives in the effective area of the following blowing air suction device in order to be spread apart by the latter and deflected by a following blowing air suction device.
  • the individual printed sheet parts are thus opened up one after the other to the opening point in order to ultimately be handed over to a saddle.
  • blowing air suction plates can also be arranged parallel to the sheet conveying plane and can be pivoted away after a sheet part has been detected.
  • a construction is also conceivable, which provides blowing air suction devices on both sides of the conveying device, whereby sheet parts are spread apart on both sides at the same time.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

Bei einem Verfahren zum Öffnen gefalzter Druckbogen, insbesondere zum Auflegen auf den Fördersattel einer Buchfadenheftmaschine, werden die Druckbogen an Einrichtungen zum Abspreizen der einzelnen Bogenteile nacheinander bis zur Öffnungsstelle vorbeigeführt. Dabei wird der Druckbogen (1) an Blasluftsaugeinrichtungen (3) vorbeigeführt und der freie Bereich der jeweils äußeren Bogenteile durch den Sogeffekt der Blasluft angesaugt und vom übrigen Druckbogen abgespreizt. Der abgespreizte Bogenteil wird zum Ansaugen eines folgenden Bogenteils aus dem Wirkbereich einer nachgeordneten Blasluftsaugeinrichtung gelenkt.In a method for opening folded printed sheets, in particular for placing them on the saddle of a book sewing machine, the printed sheets are guided past devices for spreading out the individual sheet parts one after the other to the opening point. The printed sheet (1) is guided past blowing air suction devices (3) and the free area of the respective outer sheet parts is sucked in by the suction effect of the blowing air and spread apart from the remaining printed sheet. The spread-out arch part is directed from the effective area of a downstream blowing air suction device to suck in a following arch part.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum öffnen gefalzter Druckbogen, insbesondere zum Auflegen auf den Fördersattel einer Buchfadenheftmaschine, bei denen der Druckbogen an Einrichtungen zum Abspreizen der einzelnen Bogenteile nacheinander bis zur Öffnungsstelle vorbeigeführt wird.The invention relates to a method and a device for opening folded printed sheets, in particular for placing on the conveyor saddle of a book stitching machine, in which the printed sheet is guided past devices for spreading out the individual sheet parts one after the other to the opening point.

Zum öffnen gefalzter Bogenlagen ist aus der DE-AS 10 99 988 eine Vorrichtung bekannt, bei der unterhalb einer Riemenförderbahn, zwischen der ein zu öffnender Bogen im geschlossenen Zustand gehalten und transportiert wird, und beidseitig der Transportebene ein zylindrisches Saugwalzenpaar sowie hinter diesem in Transportrichtung ein weiteres kegelförmiges Saugwalzenpaar vorgesehen sind. Zwischen den Saugwalzenpaaren befinden sich Bogenablenker, die den Übergang von der senkrechten Förderebene des ersten Saugwalzenpaares zur schrägen Mantelfläche des nachfolgenden Saugwalzenpaares bilden und die die außenliegenden, von dem ersten Saugwalzenpaar erfaßten Bogenteile hinter die Bogenablenker leiten. Beim Weitertransport werden die Bogenteile mittels der Bogenablenker aus dem Wirkbereich des zweiten Saugwalzenpaares gehalten, die nachfolgenden Bogenteile erfaßt und über weitere Bogenablenker geleitet, um den so geöffneten Druckbogen letztlich einem Auflagesattel einer nachgeschalteten Maschine zuzuführen.For opening folded sheet layers, a device is known from DE-AS 10 99 988, in which a cylindrical pair of suction rolls and behind this in the transport direction are located below a belt conveyor path, between which an open sheet is held and transported in the closed state, and on both sides of the transport plane another conical suction roller pair are provided. Between the suction roller pairs there are sheet deflectors which form the transition from the vertical conveying plane of the first pair of suction rollers to the inclined lateral surface of the subsequent pair of suction rollers and which guide the outer sheet parts covered by the first pair of suction rollers behind the sheet deflectors. During further transport, the sheet parts are kept out of the effective range of the second pair of suction rolls by means of the sheet deflectors, the subsequent sheet parts are grasped and passed over further sheet deflectors in order to ultimately feed the printed sheet thus opened to a support saddle of a downstream machine.

Zum öffnen von drei oder mehr ineinandergesteckten, gefalzten Einzelbogen können entsprechend viele Saugwalzenpaare angeordnet und durch Bogenablenker miteinander verbunden sein.For opening three or more nested, folded single sheets, a corresponding number of suction roller pairs can be arranged and connected to one another by sheet deflectors.

Durch eine Programmsteuerung ist die Möglichkeit gegeben, die einzelnen Saugwalzen nach einem festgelegten Programm selbsttätig ein- und abzuschalten.A program control enables the individual suction rolls to be switched on and off automatically according to a defined program.

Die in der DE-AS 10 99 988 veranschaulichte und beschriebene Vorrichtung zum öffnen gefalzter Bogenlagen hat sich insofern als nicht zufriedenstellend erwiesen, als sie das öffnen jeder Art von Lagen nicht zuläßt. Beispielsweise bei einer Lage mit Kreuzbruchfalzung, d.h. Lagen, die am Kopf oder Fuß teilweise geschlossen sind, können Saugwalzen und Bogenablenker durch die Lagen nicht hindurchgeführt werden. Zwar lassen einige dieser im Kreuzbruch gefalzten Lagenarten ein Hindurchführen von Saugwalzen und Bogenablenker von einer Seite zu, das mittige öffnen mittels dieser Vorrichtung ist jedoch dann nur bei entsprechender Anlagekante in der nachgeschalteten Maschine, die beispielsweise eine Buchfadenheftmaschine sein kann, möglich, wobei die Anlagekante je nach Fabrikat vorn oder hinten liegen kann.The device for opening folded sheet layers illustrated and described in DE-AS 10 99 988 has proven to be unsatisfactory insofar as it does not allow the opening of any kind of layers. For example, in a layer with cross fold, i.e. Layers that are partially closed at the head or foot cannot be guided through the layers by suction rolls and sheet deflectors. Although some of these types of folds folded in cross fold allow suction rolls and sheet deflectors to be passed through from one side, opening in the middle by means of this device is then only possible with a corresponding contact edge in the downstream machine, which can be a book thread stitching machine, for example, the contact edge depending can be front or back according to the manufacturer.

Eine Vielzahl von Kreuzbruchlagen kann folglich, wie die Praxis zeigt, nicht über die in der DE-AS 10 99 988 dargestellte Vorrichtung geöffnet werden.As practice shows, a large number of cross-fold positions cannot be opened using the device shown in DE-AS 10 99 988.

Des weiteren sind die in dieser Vorrichtung eingesetzten Saugwalzen nicht gefähigt, alle anfallenden Papiersorter. zu verarbeiten. Bedingt durch den Durchsaugeffekt bei Lagen aus porösen Papieren werden haufig mehrere Bogenteile gleichzeitig angesaugt, was zu nicht unerheblichen Störungen im Produktionsablauf führt.Furthermore, the suction rolls used in this device are not capable, all paper sorters occurring. to process. Due to the suction effect in layers of porous paper, several sheet parts are often sucked in at the same time, which leads to not inconsiderable disruptions in the production process.

In der DE-PS 19 45 501 wird eine Vorrichtung zum mittigen öffnen kreuzweise gefalzter Druckbogen dargestellt mit einem als Transportband ausgebildeten Bogenförderer, der unter einer Vielzahl von rotierenden Saugern zum Anheben und Umkippen der vom Förderer nicht gehaltenen freien Bogenteile nacheinander bis zur Öffnungsstelle vorbeilaufend angeordnet ist, und mit auf den Hauptfalz und zum Greifen des freien Randes der unteren Hälfte des geöffneten Druckbogens einwirkenden Greifern. Zum Steuern der Saugwirkung können entweder fotoelektrische Lichtschranken oder eine Programmsteuerung eingesetzt werden. Am Ende der Förderstrecke wird der Druckbogen einem Sattel, beispielsweise einer Buchfadenheftmaschine übergeben, wobei die freien, vom Transportband nicht gehaltenen Bogenteile durch ein Leitblech hochgehalten werden.In DE-PS 19 45 501 a device for the central opening of cross-folded printed sheets is shown with a sheet conveyor designed as a conveyor belt, which is arranged beneath a plurality of rotating suction cups for lifting and tipping over the free sheet parts not held by the conveyor to the opening point , and with acting on the main fold and for gripping the free edge of the lower half of the opened sheet Grippers. Either photoelectric light barriers or program control can be used to control the suction effect. At the end of the conveying path, the printed sheet is transferred to a saddle, for example a book sewing machine, the free sheet parts not held by the conveyor belt being held up by a guide plate.

Mit dieser Vorrichtung lassen sich zwar alle anfallenden Lagenarten an der gewünschten Stelle öffnen, jedoch können auch hiermit poröse Papiere nicht oder zumindest nicht störungsfrei verarbeitet werden.With this device, it is possible to open all types of layers at the desired location, but porous papers cannot be processed with them, or at least not without problems.

Eine weitere Unzulänglichkeit besteht darin, daß mit einer solchen Vorrichtung die einzelnen Bogenteile von kleinformatigen, am Kopf oder Fuß geschlossenen Lagen infolge der Eigensteifigkeit des Papieres nacheinander nicht umgekippt werden können.Another inadequacy is that with such a device the individual sheet parts of small-sized layers closed at the head or foot cannot be tipped over one after the other due to the inherent rigidity of the paper.

Darüber hinaus sind sowohl der öffnungseinrichtung nach der DE-AS 10 99 988 als auch der nach der DE-PS 19 45 501 hinsichtlich einer Steigerung der Taktzahl Grenzen gesetzt, da jeweils erst der Öffnungsvorgang an einer Öffnungsstation beendet sein muß, bevor ein nachfolgender Druckbogen einlaufen kann.In addition, both the opening device according to DE-AS 10 99 988 and that according to DE-PS 19 45 501 set limits with regard to an increase in the number of cycles, since in each case the opening process at an opening station must be ended before a subsequent printed sheet arrives can.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung der eingangs genannten Gattung zu schaffen, welche es ermöglichen, daß alle anfallenden Lagenarten und Papiersorten, unabhängig vom Bogenformat, verarbeitet werden können und mit welchen ferner eine gegenüber den bekannten öffnungseinrichtungen wesentliche Steigerung der Taktzahl erreicht wird.The invention has for its object to provide a method and an apparatus of the type mentioned, which make it possible that all layers and types of paper can be processed, regardless of the sheet format, and with which a significant increase in the number of cycles compared to the known opening devices is achieved.

Ausgehend von einem Verfahren der eingangs genannten Art sieht das Verfahren nach der Erfindung hierzu vor, daß ein zu öffnender, gefalzter Druckbogen an Blasluftsaugeinrichtungen vorbeigeführt wird und dabei der freie Bereich der jeweils äußeren Bogenteile durch den Sogeffekt der Blasluft angesaugt und vom übrigen Druckbogen abgespreizt wird und daß der abgespreizte Bogenteil zum Ansaugen eines folgenden Bogenteils aus dem Wirkbereich einer nachgeordneten Blasluftsaugeinrichtung gelenkt wird.Proceeding from a method of the type mentioned at the outset, the method according to the invention provides that an openable, folded printed sheet is guided past blowing air suction devices and the free area of the respective outer sheet parts through the Suction effect of the blown air is sucked in and spread out from the rest of the printed sheet and that the spread-out sheet part is drawn out of the effective area of a downstream blow air suction device for sucking in a following sheet part.

Vorteilhafterweise werden die Druckbogen mit einer Bogenecke voran an den Blasluftsaugeinrichtungen vorbeitransportiert und das öffnen erfolgt über eine Druckbogenecke. Nach einem weiteren Verfahrensmerkmal können die Druckbogen schuppenförmig an den Blasluftsaugeinrichtungen vorbeitransportiert werden. Ferner ist es von Vorteil, wenn die Bogenteile um etwa 15° abgespreizt werden.The printed sheets are advantageously transported past the blown air suction devices with a sheet corner ahead and the opening takes place via a printed sheet corner. According to a further feature of the process, the printed sheets can be transported in a scale-like manner past the blown air suction devices. It is also advantageous if the arc parts are spread apart by approximately 15 °.

Die Vorrichtung zur Durchführung des Verfahrens geht aus von einer Fördereinrichtung zum Transportieren der Druckbogen entlang hintereinander angeordneter Einrichtungen zum Abspreizen der einzelnen Bogenteile nacheinander bis zur öffnungsstelle und ist dadurch gekennzeichnet, daß die Einrichtungen zum Abspreizen der Bogenteile aus seitlich der Bogentransportebene angeordneten Blasluftsaugplatten bestehen, mit zur Bogentransportebene unter einem schlanken Winkel schräggestellten Saugflächen, in denen auf die freien Bereiche der Bogenteile gerichtete, einen Sogeffekt erzeugende Blasluftdüsen angeordnet sind und daß den Blasluftsaugplatten unmittelbar nachgeordnet, den abgespreizten Bogenteil aus dem Wirkbereich einer folgenden Blasluftsaugplatte führende Bogenablenker vorgesehen sind. Dabei können die Blasluftsaugplatten keilförmig ausgestaltet und die Bogenablenker jeweils von der Rückseite einer nachgeordneten Blasluftsaugplatte sowie von einer diesen Platten vorgelagerten Teilerspitze gebildet sein. Vorteilhaft ist ferner, daß die Blasluftdüsen entgegen der Bogenlaufrichtung, zu der zu öffnenden Bogenecke hin gerichtet sind und unter einem Winkel von ca. 15° aus der Saugfläche austreten. Nach einem weiteren Merkmal können die Blasluftdüsen in einer entgegen der Laufrichtung ansteigenden Linie angeordnet sein. Ferner können die Blasluftdüsen austrittsseitig eine Senkung aufweisen. Letztlich ist die Vorrichtung zur Durchführung des Verfahrens, ausgehend von einem Bogenanleger zum Vereinzeln der Druckbogen und zum Zuführen zu einer Fördereinrichtung, dadurch gekennzeichnet, daß der Anleger zur Fördereinrichtung derart schräggestellt angeordnet ist, daß die Druckbogen mit einer Bogenecke voran in die Fördereinrichtung einlaufen.The device for carrying out the method is based on a conveying device for transporting the printed sheets along devices arranged one behind the other for spreading the individual sheet parts one after the other up to the opening point and is characterized in that the devices for spreading the sheet parts consist of blowing air suction plates arranged on the side of the sheet transport plane Sheet transport plane inclined suction surfaces inclined at a narrow angle, in which blowing air nozzles directed towards the free areas of the sheet parts are arranged, and in that downstream of the blowing air suction plates, the spread sheet part leading from the effective area of a subsequent blowing air suction plate are provided. The blowing air suction plates can be designed in a wedge shape and the sheet deflectors can each be formed by the rear of a downstream blowing air suction plate and by a dividing tip upstream of these plates. It is also advantageous that the blowing air nozzles are directed counter to the direction of sheet travel, towards the sheet corner to be opened, and emerge from the suction surface at an angle of approximately 15 °. According to a further feature, the blowing air nozzles can be arranged in a line that rises against the running direction. Furthermore, the blowing air nozzles can have a depression on the outlet side. Ultimately, the device for performing the method, starting from a Bo Genanleger for separating the printed sheets and for feeding to a conveyor, characterized in that the feeder is arranged inclined to the conveyor in such a way that the printed sheets enter the conveyor with a sheet corner ahead.

Mit dem Verfahren und der Vorrichtung nach der Erfindung wird unter Ausnutzung des hydrodynamischen Paradoxons ein relativ einfacher Weg zum öffnen von gefalzten Druckbogen aufgezeigt, mit dem alle anfallenden Druckbogenfalzarten, unabhängig von der Papierbeschaffenheit, schnell und sicher geöffnet werden können.With the method and the device according to the invention, utilizing the hydrodynamic paradox, a relatively simple way of opening folded printed sheets is shown, with which all resulting types of printed sheets can be opened quickly and safely, regardless of the paper quality.

Ein Ausführungsbeispiel einer Vorrichtung zur Durchführung des Verfahrens nach der Erfindung ist in der Zeichnung schematisch dargestellt. Darin zeigt:

  • Fig. 1 eine perspektivische Teildarstellung der Vorrichtung zum öffnen gefalzter Druckbogen,
  • Fig. 2 eine Seitenansicht der Vorrichtung in einer verkleinerten Darstellung,
  • Fig. 3 eine vergrößerte Schnittdarstellung durch eine erfindungsgemäße Blasluftsaugeinrichtung gemäß der Schnittlinie A-B in Fig. 2.
An embodiment of an apparatus for performing the method according to the invention is shown schematically in the drawing. It shows:
  • 1 is a partial perspective view of the device for opening folded printed sheets,
  • 2 is a side view of the device in a reduced view,
  • 3 is an enlarged sectional view through a blow air suction device according to the invention along the section line AB in FIG. 2.

Die Vorrichtung zum öffnen gefalzter Druckbogen 1 besteht im wesentlichen aus einer Fördereinrichtung 2 und aus einer Vielzahl seitlich der Bewegungsbahn der Druckbogen, hintereinanderliegender Blasluftsaugeinrichtungen 3.The device for opening folded printed sheets 1 essentially consists of a conveying device 2 and a plurality of blow air suction devices 3 located one behind the other of the movement path of the printed sheets.

Ober einen vor der Fördereinrichtung schräg angeordneten bekannten und daher nicht näher beschriebenen Trommelanleger 4 werden die geschlossenen Druckbogen 1 endlosen, die Bogen zwischen sich klemmenden Förderriemen übergeben und mit ihrem Rücken nach oben und mit einer Bogenecke voran an den Blasluftsaugeinrichtungen vorbeitransportiert. Es hat sich als vorteilhaft erwiesen, die Druckbogen in Schuppenform durchlaufen zu lassen, um somit die Taktzahl wesentlich zu steigern. Darüber hinaus ermöglicht dieser Diagonaltransport eine Verarbeitung aller Bogenfalzarten, da die Druckbogen dabei über eine Bogenecke geöffnet werden können.Via a known drum feeder 4 arranged obliquely in front of the conveying device and therefore not described in detail, the closed printed sheets 1 are passed endlessly, the sheets between clamping conveyor belts are clamped and are transported with their back upwards and with a sheet corner ahead of the air suction devices. It has proven to be advantageous to run the printed sheets in the form of scales in order to significantly increase the number of cycles. In addition, this diagonal transport enables processing of all types of folds, since the printed sheets can be opened via a sheet corner.

Wie besonders deutlich in Fig. 3 veranschaulicht, bestehen die Einrichtungen zum öffnen der Druckbogen aus seitlich der Bewegungsebene der Druckbogen 1 auf einem Tragteil 8 installierte keilförmig ausgestaltete Blasluftsaugplatten mit einer auf die zu öffnende Bogenecke gerichteten und ca. 15° schräggestellten Saugfläche 5 mit einer Reihe von Blasluftdüsen 6, die an eine nicht gezeigte Druckluftquelle angeschlossen sind. Beim Passieren der Blasluftsaugplatten wird der jeweils äußere Teil der Lage infolge des sogenannten hydrodynamischen Paradoxons an die Fläche 5 gesaugt und dabei um ca. 15° umgelenkt. Um einen nächsten Druckbogenteil in den Wirkbereich der Blasluft einer nachfolgenden Saugplatte zu bringen, wird der erste von der übrigen Lage abgespreizte Bogenteil hinter die nachfolgende Blasluftsaugplatte, d.h. auf ihre Rückseite 5', gelenkt. Hierzu befinden sich jeweils vor den Saugplatten, mit Ausnahme der vordersten, Ablenkeinrichtungen in Form von den Saugplatten vorgelagerten Teilerspitzen 7.As is particularly clearly illustrated in FIG. 3, the devices for opening the printed sheets consist of wedge-shaped blowing air suction plates installed on the side of the plane of movement of the printed sheets 1 on a support part 8, with a suction surface 5 with a row directed towards the sheet corner to be opened and inclined at approximately 15 ° of blowing air nozzles 6, which are connected to a compressed air source, not shown. When passing the blowing air suction plates, the outer part of the layer is sucked onto surface 5 as a result of the so-called hydrodynamic paradox and is deflected by approximately 15 °. In order to bring a next printed sheet part into the effective area of the blowing air of a subsequent suction plate, the first sheet part spread apart from the remaining layer is placed behind the following blowing air suction plate, i.e. steered on its back 5 '. For this purpose, in front of the suction plates, with the exception of the foremost ones, there are deflection devices in the form of divider tips 7 arranged in front of the suction plates.

Die Lage der Düsenbohrungen 6 in den Saugplatten wurde in Fig. 1 durch die gestrichelten, den Luftaustritt darstellenden Pfeile angedeutet. Dabei sind die Düsenbohrungen entgegen der Laufrichtung der Druckbogen zu der zu öffnenden Bogenecke hin gerichtet sowie unter einem Winkel von 15° zur Saugfläche 5 angeordnet, wie Fig. 3 veranschaulicht, was einem optimalen Blas-Sogeffekt zweckdienlich ist. Zusätzlich befinden sich die Düsenbohrungen 6 noch in einer entgegen der Laufrichtung ansteigenden Linie, wodurch ein allmähliches Heranziehen des jeweils äußeren Teiles des Druckbogens bis zu seiner Ecke hin ermöglicht wird, beginnend an der ersten, dem Druckbogen am nächsten liegenden Düse. Hierdurch kann die öffnungsvorrichtung mit einem Minimum an Blasluft auskommen.The position of the nozzle bores 6 in the suction plates was indicated in FIG. 1 by the dashed arrows representing the air outlet. The nozzle bores are directed counter to the direction of travel of the printed sheets towards the sheet corner to be opened and are arranged at an angle of 15 ° to the suction surface 5, as illustrated in FIG. 3, which is useful for an optimal blowing-suction effect. In addition, the nozzle bores 6 are still in a line that rises against the direction of travel, which allows the outer part of the printing sheet to be gradually drawn up to its corner, starting at the first nozzle closest to the printing sheet. As a result, the opening device can manage with a minimum of blown air.

Zur Verhinderung der bei Düsen mit Schrägabschnitt auftretenden Strahlablenkung sowie zur Verhinderung einer dabei entstehenden Wirbelbildung wurden die Düsenbohrungen zusätzlich mit Senkungen 6' ausgestattet.In order to prevent the jet deflection occurring in the case of nozzles with an inclined section and to prevent the formation of eddies which occurred in the process, the nozzle bores were additionally equipped with countersinks 6 '.

Um verschiedene Druckbogenformate zu verarbeiten, kann die Fördereinrichtung in an sich bekannter und daher nicht beschriebener Art, bezogen auf den Anleger, höhenverstellbar ausgestaltet sein.In order to process various printed sheet formats, the conveying device can be designed to be height-adjustable in a manner known per se and therefore not described, based on the feeder.

Soll ein gefalzter Druckbogen, worunter jede Art von Lage zu verstehen ist, beispielsweise rittlings auf einen Auflagesattel 11 einer Buchfadenheftmaschine gelegt werden, so wird der zunächst geschlossene Bogen durch die Fördereinrichtung 2 an einer ersten Blasluftsaugeinrichtung vorbeitransportiert und dabei ein erster außenliegender Bogenteil durch den Blas-Sogeffekt an seiner zu öffnenden Ecke vom übrigen Druckbogen abgespreizt und beim Weitertransport mittels der Teilerspitze einer folgenden Blasluftsaugeinrichtung hinter diese selbst gelenkt. Hierdurch gelangt ein zweiter, wiederum außerliegender Bogenteil in den Wirkbereich der folgenden Blasluftsaugeinrichtung, um von dieser abgespreizt und von einer folgenden Blasluftsaugeinrichtung umgelenkt zu werden.If a folded printed sheet, which is to be understood as any type of position, is to be placed astride a support saddle 11 of a book stitching machine, for example, the initially closed sheet is transported by the conveying device 2 past a first blowing air suction device and a first external sheet part is thereby passed through the blowing Pull-off effect spread apart from the rest of the printed sheet at its opening corner and steered behind it itself by means of the dividing tip of a subsequent blowing air suction device during further transport. As a result, a second, in turn external sheet part arrives in the effective area of the following blowing air suction device in order to be spread apart by the latter and deflected by a following blowing air suction device.

Die einzelnen Druckbogenteile werden somit nacheinander bis zur Uffnungsstelle aufgeblättert, um letztlich einem Auflegesattel übergeben zu werden.The individual printed sheet parts are thus opened up one after the other to the opening point in order to ultimately be handed over to a saddle.

Die vorliegende Erfindung beschränkt sich nicht auf das dargestellte und beschriebene bevorzugte Ausführungsbeispiel. Ohne das Gebiet der Erfindung zu verlassen, können die Blasluftsaugplatten auch parallel zur Bogenförderebene angeordnet sein und nach Erfassen eines Bogenteils jeweils weggeschwenkt werden. Ebenso ist eine Konstruktion denkbar, die Blasluftsaugeinrichtungen auf beiden Seiten der Fördereinrichtung vorsieht, wodurch Bogenteile gleichzeitig nach beiden Seiten abgespreizt werden.The present invention is not limited to the preferred exemplary embodiment shown and described. Without leaving the field of the invention, the blowing air suction plates can also be arranged parallel to the sheet conveying plane and can be pivoted away after a sheet part has been detected. A construction is also conceivable, which provides blowing air suction devices on both sides of the conveying device, whereby sheet parts are spread apart on both sides at the same time.

Claims (10)

1. Verfahren zum öffnen gefalzter Druckbogen, insbesondere zum Auflegen auf den Fördersattel einer Buchfadenheftmaschine, bei dem der Druckbogen an Einrichtungen zum Abspreizen der einzelnen Bogenteile nacheinander bis zur Öffnungsstelle vorbeigeführt wird, dadurch gekennzeichnet, daß ein zu öffnender, gefalzter Druckbogen (1) an Blasluftsaugeinrichtungen (3) vorbeigeführt wird und dabei der freie Bereich der jeweils äußeren Bogenteile durch den Sogeffekt der Blasluft angesaugt und vom übrigen Druckbogen abgespreizt wird und daß der abgespreizte Bogenteil zum Ansaugen eines folgenden Bogenteils aus dem Wirkbereich einer nachgeordneten Blasluftsaugeinrichtung gelenkt wird.1. A method for opening folded printed sheets, in particular for placing on the conveyor saddle of a book stitching machine, in which the printed sheet is guided past devices for spreading the individual sheet parts one after the other to the opening point, characterized in that an openable, folded printed sheet (1) on air suction devices (3) is guided past and the free area of the respective outer sheet parts is sucked in by the suction effect of the blown air and spread apart from the rest of the printed sheet and that the spread sheet part is directed from the effective area of a downstream blow air suction device for sucking in a following sheet part. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Druckbogen (1) mit einer Bogenecke voran an den Blasluftsaugeinrichtungen (3) vorbeitransportiert werden und das öffnen über eine Druckbogenecke erfolgt.2. The method according to claim 1, characterized in that the printed sheets (1) with a sheet corner ahead of the blowing air suction devices (3) are transported past and the opening takes place via a sheet corner. 3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die Druckbogen (1) schuppenförmig an den Blasluftsaugeinrichtungen (3) vorbeitransportiert werden.3. The method according to claim 2, characterized in that the printed sheets (1) are transported in scaly form on the blowing air suction devices (3). 4. Verfahren nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß die Bogenteile um etwa 15° abgespreizt werden.4. The method according to claim 1 to 3, characterized in that the arc parts are spread apart by about 15 °. 5. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1 bis 4, mit einer Fördereinrichtung zum Transportieren der Druckbogen entlang hintereinander angeordneter Einrichtungen zum Abspreizen der einzelnen Bogenteile nacheinander bis zur öffnungsstelle, dadurch gekennzeichnet, daß die Einrichtungen zum Abspreizen der Bogenteile aus seitlich der Bogentransportebene angeordneten Blasluftsaugplatten (3) bestehen, mit zur Bogentransportebene unter einem schlanken Winkel schräggestellten Saugflächen (5), in denen auf die freien Bereiche der Bogenteile gerichtete, einen Sogeffekt erzeugende Blasluftdüsen (6) angeordnet sind und daß den Blasluftsaugplatten unmittelbar nachgeordnet, den abgespreizten Bogenteil aus dem Wirkbereich einer folgenden Blasluftsaugplatte führende Bogenablenker (5', 7) vorgesehen sind.5. Device for performing the method according to claim 1 to 4, with a conveyor for transporting the printed sheets along successively arranged devices for spreading the individual sheet parts one after the other up to the opening point, characterized in that the devices for spreading the sheet parts consist of blown air suction plates (3) arranged on the side of the sheet transport plane, with suction surfaces (5) inclined at a narrow angle to the sheet transport plane, in which directed towards the free areas of the sheet parts , a suction effect generating blast air nozzles (6) are arranged and that the blower air suction plates are arranged immediately downstream, the spread bend part from the effective range of a following blower air suction plate leading to the sheet deflector (5 ', 7). 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Blasluftsaugplatten (3) keilförmig ausgestaltet und die Bogenablenker jeweils von der Rückseite (5') einer nachgeordneten Blasluftsaugplatte sowie von einer dieser vorgelagerten Teilerspitze (7) gebildet werden.6. The device according to claim 5, characterized in that the blowing air suction plates (3) are wedge-shaped and the sheet deflectors are formed in each case from the rear (5 ') of a downstream blowing air suction plate and from one of the upstream dividing tips (7). 7. Vorrichtung nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß die Blasluftdüsen (6) entgegen der Bogenlaufrichtung zu der zu öffnenden Bogenecke hin gerichtet sind und unter einem Winkel von ca. 15° aus der Saugfläche (5) austreten.7. The device according to claim 5 or 6, characterized in that the blowing air nozzles (6) are directed against the sheet running direction to the opening corner and exit at an angle of about 15 ° from the suction surface (5). 8. Vorrichtung nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß die Blasluftdüsen (6) in einer entgegen der Laufrichtung ansteigenden Linie angeordnet sind.8. Device according to one of claims 5 to 7, characterized in that the blowing air nozzles (6) are arranged in a line which rises counter to the running direction. 9. Vorrichtung nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, daß die Blasluftdüsen austrittsseitig eine Senkung (6') aufweisen.9. Device according to one of claims 5 to 8, characterized in that the blowing air nozzles have a depression (6 ') on the outlet side. 10. Vorrichtung nach einem der Ansprüche 5 bis 9 mit einem Bogenanleger zum Vereinzeln der Druckbogen und Zuführen zur Fördereinrichtung, dadurch gekennzeichnet, daß der Anleger (4) zur Fördereinrichtung (2) derart schräggestellt angeordnet ist, daß die Druckbogen mit einer Bogenecke voran in die Fördereinrichtung einlaufen.10. Device according to one of claims 5 to 9 with a sheet feeder for separating the printed sheets and feeding to the conveyor, characterized in that the feeder (4) to the conveyor (2) is arranged inclined so that the printed sheet with a sheet corner ahead in the Run in conveyor.
EP79101877A 1978-07-01 1979-06-11 Method of and apparatus for opening folded printed sheets Expired EP0006522B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2829067 1978-07-01
DE19782829067 DE2829067A1 (en) 1978-07-01 1978-07-01 METHOD AND DEVICE FOR OPENING FOLDED PRINTED SHEET

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EP0006522A1 true EP0006522A1 (en) 1980-01-09
EP0006522B1 EP0006522B1 (en) 1983-01-12

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JP (1) JPS557197A (en)
DE (2) DE2829067A1 (en)

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GB2119767A (en) * 1982-05-05 1983-11-23 Grapha Holding Ag Apparatus for opening multi- layered folded sheets
WO1987006217A1 (en) * 1986-04-18 1987-10-22 Flensburg Carl G A Method for gathering signatures and a gathering machine for working the method
US5492316A (en) * 1994-09-20 1996-02-20 Bill McFarland Method and apparatus for opening signature sheets
NL1005618C2 (en) * 1997-03-25 1998-09-28 Kasius Vierveijzer B V Machine for separating pages from periodicals
EP2428477A3 (en) * 2010-09-13 2014-06-18 Hugo Beck Maschinenbau GmbH & Co. KG Method and device for opening bound printed products in continuous motion

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US4401300A (en) * 1981-12-21 1983-08-30 Leger' Equipment Corp. Air bearing shelf
US4522384A (en) * 1983-09-30 1985-06-11 World Color Press, Inc. Machine for collating signatures in the saddle format
CH665411A5 (en) * 1985-02-07 1988-05-13 Grapha Holding Ag Collator.
DE3621820A1 (en) * 1986-06-28 1988-01-07 Roland Man Druckmasch FOLDING AND TRANSPORT DEVICE
JP2502485Y2 (en) * 1992-06-16 1996-06-26 株式会社タンケンシールセーコウ Sensor mounting jig
DE59301771D1 (en) * 1992-07-06 1996-04-11 Ferag Ag Method and device for inserting objects into multi-leaf products, in particular into printed products
DK0831045T3 (en) * 1996-09-06 2002-02-11 Ferag Ag Method and apparatus for opening flexible flat products
DE10149074B4 (en) * 2000-10-30 2009-02-05 Heidelberger Druckmaschinen Ag Opening and folding device for mailing machines or folding machines
US6705982B1 (en) * 2000-11-15 2004-03-16 Heidelberger Druckmaschinen Ag Pre-fold sword insertion device
US20060218816A1 (en) * 2005-04-04 2006-10-05 Maytag Corporation Dryer heat modulation with solid state motor switch

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DE1099988B (en) * 1957-10-25 1961-02-23 Leipziger Buchbindereimaschine Device for opening folded sheet layers
DE1945501C3 (en) * 1969-05-26 1974-11-28 Leonardo Mailand Dolfini (Italien) Device for central opening of cross-folded printed sheets
DE2362125A1 (en) * 1972-12-18 1974-06-27 Commw Of Australia DEVICE FOR SEPARATING SHEETS IN XEROGRAPHIC PRINTING DEVICES AND OTHER SHEET HANDLING MECHANISMS

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Publication number Priority date Publication date Assignee Title
GB2119767A (en) * 1982-05-05 1983-11-23 Grapha Holding Ag Apparatus for opening multi- layered folded sheets
WO1987006217A1 (en) * 1986-04-18 1987-10-22 Flensburg Carl G A Method for gathering signatures and a gathering machine for working the method
US5492316A (en) * 1994-09-20 1996-02-20 Bill McFarland Method and apparatus for opening signature sheets
NL1005618C2 (en) * 1997-03-25 1998-09-28 Kasius Vierveijzer B V Machine for separating pages from periodicals
EP2428477A3 (en) * 2010-09-13 2014-06-18 Hugo Beck Maschinenbau GmbH & Co. KG Method and device for opening bound printed products in continuous motion

Also Published As

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DE2829067A1 (en) 1980-01-10
JPS557197A (en) 1980-01-18
DE2964473D1 (en) 1983-02-17
JPS6363447B2 (en) 1988-12-07
US4275873A (en) 1981-06-30
EP0006522B1 (en) 1983-01-12

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