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EP1975099A2 - Sheet feeder for a sheet fed printing press - Google Patents

Sheet feeder for a sheet fed printing press Download PDF

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Publication number
EP1975099A2
EP1975099A2 EP08153567A EP08153567A EP1975099A2 EP 1975099 A2 EP1975099 A2 EP 1975099A2 EP 08153567 A EP08153567 A EP 08153567A EP 08153567 A EP08153567 A EP 08153567A EP 1975099 A2 EP1975099 A2 EP 1975099A2
Authority
EP
European Patent Office
Prior art keywords
sheet
transport
printing machine
fed printing
feeder
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
EP08153567A
Other languages
German (de)
French (fr)
Other versions
EP1975099A3 (en
EP1975099B1 (en
Inventor
Arndt Jentzsch
Hartmut Nagel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP1975099A2 publication Critical patent/EP1975099A2/en
Publication of EP1975099A3 publication Critical patent/EP1975099A3/en
Application granted granted Critical
Publication of EP1975099B1 publication Critical patent/EP1975099B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/0808—Suction grippers
    • B65H3/0816—Suction grippers separating from the top of pile
    • B65H3/0825—Suction grippers separating from the top of pile and acting on the rear part of the articles relatively to the final separating direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H11/00—Feed tables
    • B65H11/002—Feed tables incorporating transport belts
    • 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
    • B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction 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
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
    • B65H5/222—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices
    • B65H5/226—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices by suction rollers
    • 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
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/512—Changing form of handled material
    • B65H2301/5124—Stretching; Tentering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/20—Acceleration or deceleration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the invention relates to a sheet feeder of a sheet-fed press, comprising a sheet stack and a device for separating and feeding sheets to the sheet-fed press, this means having means for separating the uppermost sheet from the sheet stack, a conveyor for transporting the sheet relative to the sheet stack above it. Furthermore, a transport device for taking over the sheet from the conveyor and for transfer to a suitable for supplying the sheet to the sheet-fed press sheet transport device is provided.
  • the respective uppermost sheet of a sheet pile is detected and raised for separating from the one extractable lifting suction extraction in the region of the sheet trailing edge.
  • the isolated sheet is transferred to transport suction, which transport the sheet in the sheet transport direction to the conveyor.
  • the clock rollers of the conveyor are controlled against a transport roller, so that the sheet can be detected by the active pairing clock rollers / transport roller.
  • the sheet clamped between the transport roller and the taker rollers is conveyed to a belt table, guided by the latter against front carriages pivotable into the path of the sheet and thus aligned with the leading edge.
  • the aim is that the sheet to be aligned arrives at the leading brands with the least possible imbalance, since the oblique sheet correction adversely affects the overall productivity of the printing press.
  • a solution is presented in which position errors of the sheets are to be compensated for when transferring to transport rollers.
  • a suction cup provided with transport suckers the sheet feeder, in which the sheet during a transfer phase from the transport suckers to the transport roller or to the clock roller performs no relative movement to the transport suckers.
  • the suction head of the transport suction is performed by a drive approximately parallel to the transport direction of the sheet and arranged to an additional, beyond a positive displacement generated by the drive way in the transport direction against a spring force movable.
  • the speed of the transport suction is in this case smaller than the transport speed of a gripped by the transport roller sheet, so that an extension of the sheet takes place and ensures better sheet transport, especially for thin sheets.
  • the invention has for its object to provide a sheet feeder with a device for separating and feeding sheets to a sheet-fed press, which guarantees a streamlining of the sheet in the transfer to the clock roller / transport roller and thus an exact location in the further processing.
  • a sheet feeder 1 is shown with an existing sheet of sheet 9 pile 3.
  • the sheet stack 3 rests on a stacking plate 31. This is held by conveyors 33 in the form of ropes or chains, which are articulated on the frame 2 of the sheet feeder 1 and operated by a lift, not shown.
  • the sheet stack 3 rests with its front edge 34 on a stack stop.
  • a sheet separator 4 is arranged in the region of the trailing edge 35 of the sheet stack 3.
  • the sheet separator 4 contains separating suction 41 and transport suction 42.
  • the separating suckers 41 perform a lifting movement for separating the uppermost sheet 9 from the sheet stack 3 from.
  • the separating suction 41 perform a translational movement in and against the sheet transport direction T from. Separating suction 41 and transport suction 42 are arranged at intervals next to each other transversely to the sheet transport direction T.
  • a flap shaft 32 extending over the width thereof is provided. This is arranged in the upper region of the sheet stack 3 and can be pivoted from a vertical position in the counterclockwise direction.
  • the flap shaft 32 is arranged downstream of a transport device 7, which consists of a permanently driven, over the width of the sheet stack 3 extending transport roller 72 and a plurality of clock rollers 71.
  • Each of the clock rollers 71 is rotatably mounted at the end of a lever 73 and hinged at a frame point 74 pivotally.
  • the transport roller 72 is formed as a suction roller and also clocked operable.
  • the transport device 7 is followed by an approximately horizontally extending guide plate 6, to which an inclined belt table 5 is arranged downstream.
  • FIG. 2 It can be seen that between the flap shaft 32 and the transport device 7, a further conveying member in the form of a suction roller 8 is arranged.
  • the suction roller 8 is supplied with suction air for detecting and holding the sheet 9, but rotates continuously.
  • the suction air can also be clocked.
  • the 9 imposed by the transport sucker 42 to the sheet transport speed v 1 is below the by the suction roller 8 mediated transport speed V2.
  • the respective uppermost sheet 9 of the sheet stack 3 is detected by the separating suckers 41 in the region of the trailing edge of the sheet and separated from the subsequent sheet. This is supported by blowing devices, not shown, which lead blowing air between the uppermost sheet 9 and the next sheet.
  • the floating in its entirety sheet 9 is passed from the separating suckers 41 to the transport suction 42, which lead them with the transport speed v 1 in the sheet transport direction T.
  • the flap shaft 32 is pivoted counterclockwise, so that the sheet 9 reaches with its free end in the region of the suction roller 8 and is detected by this.
  • the sheet 9 experiences the higher transport speed v 2 . This has the consequence that this is tightened and passes in this form between the transport roller 72 and the lifted from the transport roller 72 clock rollers 71.
  • the clock rollers 71 are now performed by acting on the lever 73 (not shown here) control elements against the transport roller 72 , As a result, the sheet 9 is clamped between the clock rollers 71 and the transport roller 72 and thus guided over the guide plate 6 to the belt table 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

The feeder (1) has an isolating and supplying sheet device including a separating unit to separate an upper sheet from a sheet stack (3). A conveying equipment transports a sheet relative to the stack. A transport equipment (7) transfers the sheet from the conveying equipment to the transport equipment. The transport equipment is superordinated to the conveying body i.e. suction roller, and collects and transports the sheet so that transport speed for conveying the sheet by the conveying body is larger than transport speed (V1) for conveying the stack by the conveying equipment.

Description

Die Erfindung betrifft einen Bogenanleger einer Bogendruckmaschine, enthaltend einen Bogenstapel und eine Einrichtung zum Vereinzeln und Zuführen von Bogen zur Bogendruckmaschine, wobei diese Einrichtung Mittel zum Trennen des obersten Bogens vom Bogenstapel, eine Fördereinrichtung zum Transportieren der Bogen relativ zum Bogenstapel oberhalb desselben aufweist. Weiterhin ist eine Transporteinrichtung zur Übernahme der Bogen von der Fördereinrichtung und zum Übergeben an eine zum Zuführen der Bogen zur Bogendruckmaschine geeigneten Bogentransporteinrichtung vorgesehen.The invention relates to a sheet feeder of a sheet-fed press, comprising a sheet stack and a device for separating and feeding sheets to the sheet-fed press, this means having means for separating the uppermost sheet from the sheet stack, a conveyor for transporting the sheet relative to the sheet stack above it. Furthermore, a transport device for taking over the sheet from the conveyor and for transfer to a suitable for supplying the sheet to the sheet-fed press sheet transport device is provided.

Bei derartigen Einrichtungen wird der jeweils oberste Bogen eines Bogenstapels zum Vereinzeln von den eine Hubbewegung ausführenden Trennsaugern im Bereich der Bogenhinterkante erfasst und angehoben. Durch Unterblasen wird der oberste Bogen über die gesamte Fläche vom Folgebogen getrennt und so vereinzelt. Der vereinzelte Bogen wird an Transportsauger übergeben, die den Bogen in Bogentransportrichtung zu der Fördereinrichtung transportieren. Gelangt der Bogen mit seiner Vorderkante in den Bereich der Fördereinrichtung, werden die Taktrollen der Fördereinrichtung gegen eine Transportwalze gesteuert, so dass der Bogen von der Wirkpaarung Taktrollen/Transportwalze erfasst werden kann. Nach dem Freigeben des Bogens von den Transportsaugern wird der zwischen der Transportwalze und den Taktrollen geklemmte Bogen auf einen Bändertisch gefördert, durch diesen gegen in die Bahn des Bogens schwenkbare Vordermarken geführt und so nach der Vorderkante ausgerichtet.In such facilities, the respective uppermost sheet of a sheet pile is detected and raised for separating from the one extractable lifting suction extraction in the region of the sheet trailing edge. By underblowing the top sheet is separated over the entire surface of the next sheet and so isolated. The isolated sheet is transferred to transport suction, which transport the sheet in the sheet transport direction to the conveyor. If the sheet with its front edge in the region of the conveyor, the clock rollers of the conveyor are controlled against a transport roller, so that the sheet can be detected by the active pairing clock rollers / transport roller. After releasing the sheet from the transport suckers, the sheet clamped between the transport roller and the taker rollers is conveyed to a belt table, guided by the latter against front carriages pivotable into the path of the sheet and thus aligned with the leading edge.

Dabei wird angestrebt, dass der auszurichtende Bogen mit einer möglichst geringen Schieflage an den Vordermarken ankommt, da die Schrägbogenkorrektur die Produktivität der Druckmaschine insgesamt negativ beeinflusst.The aim is that the sheet to be aligned arrives at the leading brands with the least possible imbalance, since the oblique sheet correction adversely affects the overall productivity of the printing press.

Aus der DE 102 58 416 A1 ist hierzu eine Lösung bekannt, bei der die Taktrollen unabhängig voneinander an die Transportwalze anstellbar sind und der Anstellzeitpunkt der Taktrollen unterschiedlich voneinander einstellbar ist. Dabei wird zuerst eine der beiden äußere Taktrolle auf die Transportwalze aufgesetzt. Dann folgen die nebeneinander angeordneten Taktrollen nacheinander, bis dann die andere äußere Taktrolle zuletzt aufsetzt.From the DE 102 58 416 A1 For this purpose, a solution is known in which the clock rollers are independently adjustable to the transport roller and the Anstellzeitpunkt the clock rollers is different from each other adjustable. First, one of the two outer clock roller is placed on the transport roller. Then follow the juxtaposed clock rolls in succession, until then the other outer clock roll touches down.

Durch diese Einrichtung soll eine weitgehende Schieflagenkorrektur bereits vor Berührung der Vordermarken erzielt werden. Durch die Korrektur der Schieflage im Bereich der Taktrolle kann es jedoch zu Instabilitäten des durch den Transportsauger in Richtung der Taktrollen bewegten Bogens kommen. Dieser kann gestaucht und aufgewölbt werden, was insbesondere bei dünnen und flexiblen Bedruckstoffen problematisch sein kann.By this means, a substantial imbalance correction should be achieved before touching the leading brands. However, the correction of the imbalance in the area of the control roller can lead to instabilities of the sheet moving through the transport suction device in the direction of the control rollers. This can be upset and arched which can be problematic especially for thin and flexible substrates.

In der DE 44 47 204 wird eine Lösung vorgestellt, bei der Lagefehler der Bogen bei der Übergabe an Transportrollen kompensiert werden sollen. Hierzu ist vorgesehen, einen mit Transportsaugern versehenen Saugkopf den Bogenanleger zu schaffen, bei dem der Bogen während einer Übergabephase von den Transportsaugern an die Transportwalze bzw. an die Taktrolle keine Relativbewegung zu den Transportsaugern ausführt. Dabei wird der Saugkopf des Transportsaugers mittels eines Antriebes annähernd parallel zu der Transportrichtung des Bogens geführt und um einen zusätzlichen, über einen vom Antrieb erzeugten Zwangshub hinausgehenden Weg in Transportrichtung gegen eine Federkraft bewegbar angeordnet. Die Geschwindigkeit der Transportsauger ist hierbei kleiner als die Transportgeschwindigkeit eines von der Transportwalze ergriffenen Bogens, so dass eine Streckung des Bogens erfolgt und insbesondere bei dünnen Bogen einen besseren Bogentransport gewährleistet.In the DE 44 47 204 a solution is presented in which position errors of the sheets are to be compensated for when transferring to transport rollers. For this purpose, it is provided to provide a suction cup provided with transport suckers the sheet feeder, in which the sheet during a transfer phase from the transport suckers to the transport roller or to the clock roller performs no relative movement to the transport suckers. In this case, the suction head of the transport suction is performed by a drive approximately parallel to the transport direction of the sheet and arranged to an additional, beyond a positive displacement generated by the drive way in the transport direction against a spring force movable. The speed of the transport suction is in this case smaller than the transport speed of a gripped by the transport roller sheet, so that an extension of the sheet takes place and ensures better sheet transport, especially for thin sheets.

Diese Streckung des Bogens erfordert aber eine komplizierte Abstimmung der Geschwindigkeiten zwischen den Transportsaugern und der Transportwalze.However, this stretching of the sheet requires a complicated coordination of the speeds between the transport suckers and the transport roller.

Der Erfindung liegt die Aufgabe zugrunde, einen Bogenanleger mit einer Einrichtung zum Vereinzeln und Zuführen von Bogen zu einer Bogendruckmaschine zu schaffen, die eine Straffung des Bogens bei der Übergabe an die Taktrolle/Transportwalze und damit eine exakte Lage bei der weiteren Verarbeitung garantiert.The invention has for its object to provide a sheet feeder with a device for separating and feeding sheets to a sheet-fed press, which guarantees a streamlining of the sheet in the transfer to the clock roller / transport roller and thus an exact location in the further processing.

Diese Aufgabe wird durch die Merkmale des 1. Anspruchs gelöst.This object is solved by the features of the first claim.

Die Erfindung wird an einem Ausführungsbeispiel näher erläutert. In den zugehörigen Zeichnungen zeigen:

  • Fig. 1 einen Bogenanleger in Seitenansicht,
  • Fig. 2 eine schematische Seitenansicht einer mit einer Transportwalze zusammenwirkenden Taktrolle
The invention will be explained in more detail using an exemplary embodiment. In the accompanying drawings show:
  • Fig. 1 a sheet feeder in side view,
  • Fig. 2 a schematic side view of a cooperating with a transport roller clock roller

In Fig. 1 ist ein Bogenanleger 1 mit einem aus Bogen 9 bestehenden Bogenstapel 3 dargestellt. Der Bogenstapel 3 ruht auf einer Stapelplatte 31. Diese wird von Fördermitteln 33 in Form von Seilen oder Ketten gehalten, die am Gestell 2 des Bogenanlegers 1 angelenkt sind und durch einen nicht dargestellten Aufzug betrieben werden.In Fig. 1 a sheet feeder 1 is shown with an existing sheet of sheet 9 pile 3. The sheet stack 3 rests on a stacking plate 31. This is held by conveyors 33 in the form of ropes or chains, which are articulated on the frame 2 of the sheet feeder 1 and operated by a lift, not shown.

Der Bogenstapel 3 liegt mit seiner Vorderkante 34 an einem Stapelanschlag an. Im Bereich der Hinterkante 35 des Bogenstapels 3 ist ein Bogentrenner 4 angeordnet. Der Bogentrenner 4 enthält Trennsauger 41 und Transportsauger 42. Die Trennsauger 41 führen eine Hubbewegung zum Vereinzeln des obersten Bogens 9 vom Bogenstapel 3 aus. Die Trennsauger 41 führen eine translatorische Bewegung in und entgegen der Bogentransportrichtung T aus. Trennsauger 41 und Transportsauger 42 sind in Abständen nebeneinander quer zur Bogentransportrichtung T angeordnet.The sheet stack 3 rests with its front edge 34 on a stack stop. In the region of the trailing edge 35 of the sheet stack 3, a sheet separator 4 is arranged. The sheet separator 4 contains separating suction 41 and transport suction 42. The separating suckers 41 perform a lifting movement for separating the uppermost sheet 9 from the sheet stack 3 from. The separating suction 41 perform a translational movement in and against the sheet transport direction T from. Separating suction 41 and transport suction 42 are arranged at intervals next to each other transversely to the sheet transport direction T.

An der Vorderseite des Bogenstapels 3 ist eine sich über dessen Breite erstreckende Klappenwelle 32 vorgesehen. Diese ist im oberen Bereich des Bogenstapels 3 angeordnet und kann aus einer lotrechten Lage entgegen dem Uhrzeigersinn geschwenkt werden. Der Klappenwelle 32 ist eine Transporteinrichtung 7 nachgeordnet, die aus einer permanent angetriebenen, sich über die Breite des Bogenstapels 3 erstreckenden Transportwalze 72 und mehren Taktrollen 71 besteht. Jede der Taktrollen 71 ist endseitig eines Hebels 73 drehbar gelagert und an einem Gestellpunkt 74 schwenkbar angelenkt.At the front of the sheet pile 3, a flap shaft 32 extending over the width thereof is provided. This is arranged in the upper region of the sheet stack 3 and can be pivoted from a vertical position in the counterclockwise direction. The flap shaft 32 is arranged downstream of a transport device 7, which consists of a permanently driven, over the width of the sheet stack 3 extending transport roller 72 and a plurality of clock rollers 71. Each of the clock rollers 71 is rotatably mounted at the end of a lever 73 and hinged at a frame point 74 pivotally.

In einer anderen Ausführung ist die Transportwalze 72 als eine Saugwalze ausgebildet und ebenfalls getaktet betreibbar.In another embodiment, the transport roller 72 is formed as a suction roller and also clocked operable.

An die Transporteinrichtung 7 schließt sich ein etwa waagerecht verlaufendes Leitblech 6 an, dem ein geneigter Bändertisch 5 nachgeordnet ist.The transport device 7 is followed by an approximately horizontally extending guide plate 6, to which an inclined belt table 5 is arranged downstream.

In der Figur 2 ist zu erkennen, dass zwischen der Klappenwelle 32 und der Transporteinrichtung 7 ein weiteres Förderorgan in Form einer Saugwalze 8 angeordnet ist. Die Saugwalze 8 wird mit Saugluft zum Erfassen und Halten des Bogens 9 beaufschlagt, dreht sich aber kontinuierlich. Die Saugluft kann auch getaktet sein. Dabei ist die dem Bogen 9 vermittelte, in der Figur 2 als Transportgeschwindigkeit v2 bezeichnetes Umfangsgeschwindigkeit größer als die Transportgeschwindigkeit v1 des Bogens 9 oberhalb des Bogenstapels 3. Mit anderen Worten: Die durch die Transportsauger 42 dem Bogen 9 aufgeprägte Transportgeschwindigkeit v1 liegt unter der durch die Saugwalze 8 vermittelte Transportgeschwindigkeit v2.In the FIG. 2 It can be seen that between the flap shaft 32 and the transport device 7, a further conveying member in the form of a suction roller 8 is arranged. The suction roller 8 is supplied with suction air for detecting and holding the sheet 9, but rotates continuously. The suction air can also be clocked. In this case, the bow 9 mediated, in the FIG. 2 as the transport speed v 2 designated peripheral speed greater than the conveying speed v 1 of the sheet 9 above the stack of sheets 3. In other words, the 9 imposed by the transport sucker 42 to the sheet transport speed v 1 is below the by the suction roller 8 mediated transport speed V2.

Die Erfindung wird im Ausführungsbeispiel an Hand einer Saugwalze 8 beschrieben, wobei die Erfindung aber nicht auf diese beschränkt ist. Es sind auch andere Förderorgane an dieser Stelle denkbar, wie zum Beispiel eine Reihe quer zur Bogentransportrichtung T angeordnete Zangengreifer oder Sauger.The invention will be described in the embodiment with reference to a suction roller 8, but the invention is not limited to this. There are also other conveying elements conceivable at this point, such as a series of transversely to the sheet transport direction T arranged pincers or suckers.

Zur Wirkungsweise:For effect:

In bekannter Weise wird der jeweils oberste Bogen 9 des Bogenstapels 3 von den Trennsaugern 41 im Bereich der Bogenhinterkante erfasst und vom darunter liegenden Folgebogen getrennt. Das wird durch nicht dargestellte Blaseinrichtungen, die Blasluft zwischen den obersten Bogen 9 und den Folgebogen führen, unterstützt.In a known manner, the respective uppermost sheet 9 of the sheet stack 3 is detected by the separating suckers 41 in the region of the trailing edge of the sheet and separated from the subsequent sheet. This is supported by blowing devices, not shown, which lead blowing air between the uppermost sheet 9 and the next sheet.

Nachfolgend wird der in seiner Gesamtheit schwebende Bogen 9 von den Trennsaugern 41 an die Transportsauger 42 übergeben, die diesen mit der Transportgeschwindigkeit v1 in Bogentransportrichtung T führen. Dabei wird die Klappenwelle 32 entgegen dem Uhrzeigersinn geschwenkt, so dass der Bogen 9 mit seinem freien Ende in den Bereich der Saugwalze 8 gelangt und von dieser erfasst wird. Dadurch erfährt der Bogen 9 die höhere Transportgeschwindigkeit v2. Das hat zur Folge, dass dieser gestrafft wird und gelangt in dieser Form zwischen die Transportwalze 72 und die von der Transportwalze 72 abgehobenen Taktrollen 71. Die Taktrollen 71 werden nun durch an die Hebel 73 angreifende (hier nicht dargestellte) Stellelemente gegen die Transportwalze 72 geführt. Dadurch wird der Bogen 9 zwischen den Taktrollen 71 und der Transportwalze 72 geklemmt und damit über das Leitblech 6 zum Bändertisch 5 geführt.Subsequently, the floating in its entirety sheet 9 is passed from the separating suckers 41 to the transport suction 42, which lead them with the transport speed v 1 in the sheet transport direction T. In this case, the flap shaft 32 is pivoted counterclockwise, so that the sheet 9 reaches with its free end in the region of the suction roller 8 and is detected by this. As a result, the sheet 9 experiences the higher transport speed v 2 . This has the consequence that this is tightened and passes in this form between the transport roller 72 and the lifted from the transport roller 72 clock rollers 71. The clock rollers 71 are now performed by acting on the lever 73 (not shown here) control elements against the transport roller 72 , As a result, the sheet 9 is clamped between the clock rollers 71 and the transport roller 72 and thus guided over the guide plate 6 to the belt table 5.

Aufstellung der verwendeten BezugszeichenList of used reference numbers

11
Bogenanlegersheet feeder
22
Gestellframe
33
Bogenstapelsheet pile
3131
Stapelplattestacking plate
3232
Klappenwelleflap shaft
3333
Fördermittelfunding
3434
Vorderkanteleading edge
3535
Hinterkantetrailing edge
44
Bogentrennersheet separator
4141
Trennsaugersuction separator
4242
Transportsaugertransport sucker
55
Bändertischbelt table
66
Leitblechbaffle
77
Transporteinrichtungtransport means
7171
Taktrollesynchronizing roller
7272
Transportwalzetransport roller
7373
Hebellever
7474
Gestellpunktstand point
88th
Saugwalzesuction roll
99
Bogenbow
TT
BogentransportrichtungSheet transport direction
V1 V 1
Transportgeschwindigkeit oberhalb des BogenstapelsTransport speed above the sheet pile
V2 V 2
Transportgeschwindigkeit, durch die Saugwalze vermitteltTransport speed, conveyed by the suction roller

Claims (12)

Bogenanleger einer Bogendruckmaschine, enthaltend einen Bogenstapel (3) und eine Einrichtung zum Vereinzeln und Zuführen von Bogen (9) zur Bogendruckmaschine, wobei diese Einrichtung Mittel zum Trennen des obersten Bogens (9) vom Bogenstapel (3), eine Fördereinrichtung zum Transportieren der Bogen (9) relativ zum Bogenstapel (3) oberhalb desselben und eine Transporteinrichtung (7) zur Übernahme der Bogen (9) von der Fördereinrichtung und zum Übergeben an eine zum Zuführen der Bogen (9) zur Bogendruckmaschine vorgesehene Bogentransporteinrichtung enthält,
dadurch gekennzeichnet, dass
der Transporteinrichtung (7) ein Förderorgan zum Erfassen und Transportieren der Bogen (9) vorgeordnet ist, derart, dass die durch das Förderorgan den Bogen (9) vermittelte Transportgeschwindigkeit (v2) größer ist als die durch die Fördereinrichtung zum Transportieren der Bogen oberhalb des Bogenstapels (3) vermittelte Transportgeschwindigkeit (v1).Sheet feeder of a sheet-fed printing machine, comprising a sheet stack (3) and a device for separating and feeding sheets (9) to the sheet-fed press, this means for separating the uppermost sheet (9) from the sheet stack (3), a conveyor for transporting the sheets (3) 9) relative to the sheet stack (3) above the same and a transport device (7) for transferring the sheet (9) from the conveyor and for transfer to a provided for feeding the sheet (9) to the sheet-fed press sheet transport device contains,
characterized in that
the conveying device (7) is preceded by a conveying member for detecting and transporting the sheets (9) such that the transport speed (v 2 ) imparted by the conveying member to the sheet (9) is greater than that by the conveying device for transporting the sheets above the sheet Sheet stack (3) mediated transport speed (v 1 ). Bogenanleger einer Bogendruckmaschine nach Anspruch 1, dadurch gekennzeichnet, dass das Förderorgan als Saugwalze (8) ausgebildet ist.Sheet feeder of a sheet-fed printing machine according to claim 1, characterized in that the conveying member is formed as a suction roll (8). Bogenanleger einer Bogendruckmaschine nach Anspruch 2, dadurch gekennzeichnet, dass die Saugwalze (8) mit getakteter Saugluft beaufschlagbar ist.Sheet feeder of a sheet-fed printing machine according to claim 2, characterized in that the suction roll (8) can be acted upon by clocked suction air. Bogenanleger einer Bogendruckmaschine nach Anspruch 1, dadurch gekennzeichnet, dass das Förderorgan aus in Reihe quer zur Bogentransportrichtung (T) angeordneten Saugern besteht.Sheet feeder of a sheet-fed printing machine according to claim 1, characterized in that the conveying member consists of in series transversely to the sheet transport direction (T) arranged suckers. Bogenanleger einer Bogendruckmaschine nach Anspruch 1, dadurch gekennzeichnet, dass das Förderorgan aus in Reihe quer zur Bogentransportrichtung (T) angeordneten Zangengreifern besteht.Sheet feeder of a sheet-fed printing machine according to claim 1, characterized in that the conveying member consists of serially arranged transversely to the sheet transport direction (T) pliers grippers. Bogenanleger einer Bogendruckmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Mittel zum Trennen des obersten Bogens (9) vom Bogenstapel (3) in Bogentransportrichtung (T) gesehen der Hinterkante (35) des Bogenstapels (3) zugeordnet sind.Sheet feeder of a sheet-fed printing machine according to claim 1, characterized in that the means for separating the uppermost sheet (9) from the sheet stack (3) in the sheet transport direction (T) seen in the trailing edge (35) of the sheet stack (3) are assigned. Bogenanleger einer Bogendruckmaschine nach Anspruch 1 oder 6, dadurch gekennzeichnet, dass die Mittel zum Trennen des obersten Bogens (9) vom Bogenstapel (3) als eine Reihe transversal angeordneter Trennsauger (41) ausgebildet sind.Sheet feeder of a sheet-fed printing machine according to claim 1 or 6, characterized in that the means for separating the uppermost sheet (9) from the sheet stack (3) are formed as a series of transversely arranged separating suction (41). Bogenanleger einer Bogendruckmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Fördereinrichtung zum Transportieren der Bogen (9) mit der Transportgeschwindigkeit (v1) relativ zum Bogenstapel (3) in Bogentransportrichtung (T) gesehen der Hinterkante (35) des Bogenstapels (3) zugeordnet ist.Sheet feeder of a sheet-fed printing machine according to claim 1, characterized in that the conveyor for transporting the sheet (9) with the transport speed (v 1 ) relative to the sheet stack (3) in the sheet transport direction (T) seen the trailing edge (35) of the sheet stack (3) assigned is. Bogenanleger einer Bogendruckmaschine nach Anspruch 1 oder 8, dadurch gekennzeichnet, dass die Fördereinrichtung zum Transportieren der Bogen (9) als eine Reihe transversal angeordneter Transportsauger (42) ausgebildet sind.Sheet feeder of a sheet-fed printing machine according to claim 1 or 8, characterized in that the conveying device for transporting the sheets (9) are designed as a series of transversely arranged transport suction cups (42). Bogenanleger einer Bogendruckmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Transporteinrichtung (7) getaktet betreibbar ist.Sheet feeder of a sheet-fed printing machine according to claim 1, characterized in that the transport device (7) is clocked operable. Bogenanleger einer Bogendruckmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Transporteinrichtung (7) mindestens zwei in vorgebbaren Takt in Wirkverbindung mit einer Transportwalze (72) tretende Taktrolle (71) enthält.Sheet feeder of a sheet-fed printing machine according to claim 1, characterized in that the transport device (7) contains at least two in predetermined clock in operative connection with a transport roller (72) passing clock roller (71). Bogenanleger einer Bogendruckmaschine nach Anspruch 1, dadurch gekennzeichnet, dass Bogenzuführeinrichtung zur Druckmaschine einen Bändertisch (5) aufweist.Sheet feeder of a sheet-fed printing machine according to claim 1, characterized in that the sheet feeding device to the printing machine has a belt table (5).
EP08153567A 2007-03-30 2008-03-28 Sheet feeder for a sheet fed printing press Not-in-force EP1975099B1 (en)

Applications Claiming Priority (1)

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DE102007015341A DE102007015341A1 (en) 2007-03-30 2007-03-30 Sheet feeder of a sheet-fed printing machine

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DE10258416A1 (en) 2002-12-13 2004-06-24 Koenig & Bauer Ag Sheet feeder arrangement for a printing or copying machine, has cyclic rollers that are positioned independently of each other on a transport roller and at individually adjustable point

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EP1975099A3 (en) 2010-08-11
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