EP0939739B1 - Device for feeding sheets to a conveyor drum in a printing press - Google Patents

Device for feeding sheets to a conveyor drum in a printing press Download PDF

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Publication number
EP0939739B1
EP0939739B1 EP97949860A EP97949860A EP0939739B1 EP 0939739 B1 EP0939739 B1 EP 0939739B1 EP 97949860 A EP97949860 A EP 97949860A EP 97949860 A EP97949860 A EP 97949860A EP 0939739 B1 EP0939739 B1 EP 0939739B1
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EP
European Patent Office
Prior art keywords
sheet
appliance
gripper
transport element
feeding sheets
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
EP97949860A
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German (de)
French (fr)
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EP0939739A1 (en
Inventor
Arndt Jentzsch
Reinhardt Nerger
Victor Hefftler
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
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Koenig and Bauer AG
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Filing date
Publication date
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP0939739A1 publication Critical patent/EP0939739A1/en
Application granted granted Critical
Publication of EP0939739B1 publication Critical patent/EP0939739B1/en
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/04—Grippers
    • B41F21/05—In-feed grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • 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
    • B65H3/0833—Suction grippers separating from the top of pile and acting on the front 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
    • 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
    • B65H5/10—Reciprocating or oscillating grippers, e.g. suction or gripper tables

Definitions

  • the invention relates to a device for feeding sheets from a stack of feeder sheets to a sheet transport drum Printing press.
  • the uppermost sheet of a stack of sheets is gripped by lifting suction devices placed on the sheet, transported vertically, transferred to transport suction devices and transported in the direction of a feed table (DE 36 34 659).
  • the sheet transported over the feed table for example with belts to the feed marks, is taken over by a pre-gripper equipped with a row of grippers, accelerated to machine speed and transferred to a sheet guide cylinder.
  • This arrangement requires a long feed table and a pivotal pivot point that is shifted in the direction of the sheet feeder and thus a large installation space. Furthermore, there is a short acceleration path of the pre-gripper and correspondingly unfavorable dynamic conditions.
  • the object of the invention is to shorten the installation space, distance Feeder sheet stack / sheet transport drum, with simultaneous enlargement the acceleration path of the forerunner.
  • the task is characterized by the characteristics of the first Claim solved.
  • the uppermost sheet 2 resting on the feeder sheet stack 1 forms a first level 3 / feeder sheet stacking level and the sheet 2 has a gripper edge 4 in the front edge area.
  • the gripper edge 4 usually extends from the front edge of the sheet measured in the direction of the sheet extension over a path of 3 to 5 mm.
  • the sheet 2 is gripped exclusively at this gripper edge 4 and transported from the feeder sheet stack 1 to a sheet transport drum 13.
  • the feeder sheet stack 1 is delimited on the machine side, ie in the sheet running direction 10, by a fixed stop 9 which extends beyond the first level 3.
  • a transport element 8 designed as a suction oscillator is mounted in an oscillation point 7.
  • the transport element 8 is coupled to an oscillating drive, not shown, for example a known cam drive.
  • the oscillation angle ⁇ of the transport element 8 is less than 25 degrees, preferably 10 degrees.
  • the transport element 8 is equipped with lifting suction devices 15 which extend transversely to the sheet running direction 10 and form a suction strip.
  • a device for vertical movement 11 is integrated in the transport element 8.
  • the device for vertical movement 11 has the task of detecting the uppermost sheet 2 at the gripper edge 4 (sheet detection point 19), separating it from the feeder sheet stack 1 and lifting it to a second level 6, which corresponds to the oscillating path of the transport element 8.
  • the lifting suction devices 15 of the transport element 8 are designed as multi-step suction devices, preferably as three-step suction devices.
  • the transport element 8 is equipped with lifting suction devices 15, preferably designed as a two-step suction device, and the transport element 8 is preceded by the device for vertical movement 5, in the form of a multi-step suction device (three-step suction device).
  • the sheet transfer from the device for vertical movement 5, which is arranged above the leading edge area of the sheet, to the transport element 8 takes place in the second plane 6 at the sheet transfer point 21.
  • a feed table 12 Arranged in the sheet running direction 10 in front of the feeder sheet stack 1 is a feed table 12 which adjoins the stop 9 and rises in the sheet running direction.
  • the feed table level, the second level 6 and the oscillating path of the transport element are almost identical.
  • the feed table 12 is delimited by feed marks 16 extending transversely to the sheet running direction 10. These contact marks 16 are pivotable or lowerable and can be controlled from the sheet path.
  • the sheet 2 is detected by means of the device for vertical movement 11, which is designed as a three-stage suction device and is integrated in the transport element 8, in the first plane 3 at the sheet detection point 19, raised to the second plane 6 by the oscillating movement of the transport element 8 to transported to the feed marks 16 and released there to the sheet release point 17.
  • the three-stage suction device is then raised to the third level 18, the transport element 8 swings back into its starting position over the front edge region of the uppermost sheet 2, and the three-stage suction device is lowered to the first level 3 (FIG. 2).
  • the sheet 2 is detected in the first level 3 at the sheet detection point 19 by means of the device for vertical movement 11, which is designed as a three-stage suction device and is arranged upstream of the transport element 8, raised to the second level 6 and to the sheet transfer point 21, which is above the sheet detection point 19 lies in the second level 6 to the lifting suction device of the transport element 8, which is designed as a two-stage suction device.
  • the three-stage suction device of the device for vertical movement 11 is then raised to a third level 18 and then lowered again to the first level 3. Due to the oscillating movement of the transport element 8, the sheet 2 taken over is transported to the application marks 16 and released there to the sheet release point 17.
  • the suction surface of the suction lifter 15 is arranged parallel or almost parallel to the plane of the feed table 12.
  • a pre-gripper 22 is arranged below the plane of the feed table 12.
  • the pre-gripper 22 is also designed as a suction oscillator and can be pivoted about a pivot point 5.
  • the drive of the pre-gripper for example by means of a generally known curve drive, is not shown.
  • the pivot point 5 of the pre-gripper, the sheet release point 20 and the pivot point 7 of the transport element 8 lie on a straight line or almost on a straight line.
  • the sheet transfer from the transport element 8 to the pre-gripper 22 and from the pre-gripper 22 to the sheet transport drum 13 takes place tangentially or almost tangentially.
  • the beginning of the oscillation path of the transport element 8 is also tangential or almost tangential to a parallel plane of the first plane (3), the feeder sheet stack plane.
  • the sheet 2 is aligned by means of alignment means (not shown) on the feed marks 16 arranged transversely to the sheet conveying direction and on side marks (not shown) arranged laterally on the feed table.
  • the sheet is accelerated to machine speed by the pre-gripper 22 and transferred to the grippers of the sheet transport drum 13.
  • the pivot point 5 of the pre-gripper 22 is moved by the arrangement according to the invention - feed table rising in the sheet running direction, transport element designed as a suction rocker, pre-gripper designed as a suction rocker and connecting straight line pivot point 7, sheet release point 17, swing point 7 - in the sheet running direction to the sheet transport drum, whereby the installation space has been extremely shortened and a longer acceleration path of the bow was achieved.

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

Description

Die Erfindung betrifft eine Einrichtung zum Zuführen von Bogen von einem Anlegerbogenstapel zu einer Bogentransporttrommel einer Druckmaschine.The invention relates to a device for feeding sheets from a stack of feeder sheets to a sheet transport drum Printing press.

In Bogendruckmaschinen wird der oberste Bogen eines Bogenstapels durch auf den Bogen aufsetzende Hubsauger erfaßt, vertikal transportiert, an Transportsauger übergeben und in Richtung zu einem Anlegtisch transportiert (DE 36 34 659).
Der über den Anlegtisch z.B. mit Bändern bis zu den Anlegmarken transportierte Bogen wird von einem mit einer Greiferreihe ausgestatteten Vorgreifer übernommen, auf Maschinengeschwindigkeit beschleunigt und an einen Bogenführungszylinder übergeben.
Diese Anordnung erfordert einen langen Anlegtisch und einen in Richtung Bogenanleger verschobenen Vorgreiferschwenkpunkt und damit einen großen Bauraum. Des weiteren ergibt sich ein geringer Beschleunigungsweg des Vorgreifers und entsprechend ungünstige dynamische Verhältnisse.In sheet-fed printing machines, the uppermost sheet of a stack of sheets is gripped by lifting suction devices placed on the sheet, transported vertically, transferred to transport suction devices and transported in the direction of a feed table (DE 36 34 659).
The sheet transported over the feed table, for example with belts to the feed marks, is taken over by a pre-gripper equipped with a row of grippers, accelerated to machine speed and transferred to a sheet guide cylinder.
This arrangement requires a long feed table and a pivotal pivot point that is shifted in the direction of the sheet feeder and thus a large installation space. Furthermore, there is a short acceleration path of the pre-gripper and correspondingly unfavorable dynamic conditions.

Aufgabe der Erfindung ist eine Verkürzung des Bauraumes, Abstand Anlegerbogenstapel/Bogentransporttrommel, bei gleichzeitiger Vergrößerung des Beschleunigungsweges des Vorgreifers.The object of the invention is to shorten the installation space, distance Feeder sheet stack / sheet transport drum, with simultaneous enlargement the acceleration path of the forerunner.

Erfindungsgemäß wird die Aufgabe durch das Kennzeichen des ersten Anspruchs gelöst.According to the invention, the task is characterized by the characteristics of the first Claim solved.

Nachfolgend wird die Erfindung an einem Ausführungsbeispiel näher erläutert.
In der Zeichnung zeigt

Fig. 1
Einrichtung zum Zuführen von Bogen;
Fig. 2
Bewegungsablauf Transportelement mit integrierter Einrichtung zur Vertikalbewegung;
Fig. 3
Bewegungsablauf Transportelement und separater Einrichtung zur Vertikalbewegung.
The invention is explained in more detail below using an exemplary embodiment.
In the drawing shows
Fig. 1
Sheet feeding device;
Fig. 2
Sequence of movements Transport element with integrated device for vertical movement;
Fig. 3
Sequence of movements Transport element and separate device for vertical movement.

Der auf dem Anlegerbogenstapel 1 aufliegende oberste Bogen 2 bildet eine erste Ebene 3/Anlegerbogenstapelebene und der Bogen 2 weist im Vorderkantenbereich einen Greiferrand 4 auf. Der Greiferrand 4 erstreckt sich üblicherweise von der Bogenvorderkante in Bogenerstreckungsrichtung gemessen über einen Weg von 3 bis 5 mm. Der Bogen 2 wird ausschließlich an diesem Greiferrand 4 erfaßt und vom Anlegerbogenstapel 1 bis zu einer Bogentransporttrommel 13 transportiert.
Der Anlegerbogenstapel 1 ist maschinenseitig, d.h. in Bogenlaufrichtung 10, durch einen fest angeordneten Anschlag 9 begrenzt, der sich bis über die erste Ebene 3 erstreckt.
Oberhalb des Vorderkantenbereiches des jeweils obersten Bogens 2 des Anlegerbogenstapels 1 ist ein als Saugerschwinger ausgebildetes Transportelement 8 in einem Schwingpunkt 7 gelagert.
Dazu ist das Transportelement 8 mit einem nicht dargestellten Schwingantrieb, beispielsweise einem bekannten Kurventrieb, gekoppelt. Der Schwingwinkel α des Transportelementes 8 liegt unter 25 Grad, vorzugsweise bei 10 Grad.
Des weiteren ist das Transportelement 8 mit sich quer zur Bogenlaufrichtung 10 erstreckenden Hubsaugern 15 bestückt, die eine Saugerleiste bilden.The uppermost sheet 2 resting on the feeder sheet stack 1 forms a first level 3 / feeder sheet stacking level and the sheet 2 has a gripper edge 4 in the front edge area. The gripper edge 4 usually extends from the front edge of the sheet measured in the direction of the sheet extension over a path of 3 to 5 mm. The sheet 2 is gripped exclusively at this gripper edge 4 and transported from the feeder sheet stack 1 to a sheet transport drum 13.
The feeder sheet stack 1 is delimited on the machine side, ie in the sheet running direction 10, by a fixed stop 9 which extends beyond the first level 3.
Above the front edge area of the uppermost sheet 2 of the feeder sheet stack 1, a transport element 8 designed as a suction oscillator is mounted in an oscillation point 7.
For this purpose, the transport element 8 is coupled to an oscillating drive, not shown, for example a known cam drive. The oscillation angle α of the transport element 8 is less than 25 degrees, preferably 10 degrees.
Furthermore, the transport element 8 is equipped with lifting suction devices 15 which extend transversely to the sheet running direction 10 and form a suction strip.

Nach einer ersten Variante ist in das Transportelement 8 eine Einrichtung zur Vertikalbewegung 11 integriert. Die Einrichtung zur Vertikalbewegung 11 hat die Aufgabe den obersten Bogen 2 am Greiferrand 4 zu erfassen (Bogenerfassungspunkt 19), vom Anlegerbogenstapel 1 zu trennen und auf eine zweite Ebene 6, die der Schwingbahn des Transportelementes 8 entspricht, anzuheben.
Dazu sind die Hubsauger 15 des Transportelementes 8 als Mehrstufensauger, vorzugsweise als Dreistufensauger, ausgebildet.According to a first variant, a device for vertical movement 11 is integrated in the transport element 8. The device for vertical movement 11 has the task of detecting the uppermost sheet 2 at the gripper edge 4 (sheet detection point 19), separating it from the feeder sheet stack 1 and lifting it to a second level 6, which corresponds to the oscillating path of the transport element 8.
For this purpose, the lifting suction devices 15 of the transport element 8 are designed as multi-step suction devices, preferably as three-step suction devices.

Nach einer zweiten Variante ist das Transportelement 8 mit Hubsaugern 15, vorzugsweise als Zweistufensauger ausgebildet, bestückt und dem Transportelement 8 ist die Einrichtung zur Vertikalbewegung 5, in der Ausbildung als Mehrstufensauger (Dreistufensauger), vorgeordnet. Die Bogenübergabe von der ortsfest oberhalb des Vorderkantenbereiches des Bogens angeordneten Einrichtung zur Vertikalbewegung 5 an das Transportelement 8 erfolgt in der zweiten Ebene 6 im Bogenübergabepunkt 21.
In Bogenlaufrichtung 10 vor dem Anlegerbogenstapel 1 ist ein sich an den Anschlag 9 anschließender in Bogenlaufrichtung ansteigender Anlegtisch 12 angeordnet. Die Anlegtischebene, die zweite Ebene 6 und die Schwingbahn des Transportelementes sind dabei nahezu identisch.
An der der Bogentransporttrommel 13 zugekehrten Seite ist der Anlegtisch 12 durch sich quer zur Bogenlaufrichtung 10 erstreckende Anlegmarken 16 begrenzt. Diese Anlegmarken 16 sind schwenkbar bzw. absenkbar angeordnet und können aus der Bogenbahn gesteuert werden.According to a second variant, the transport element 8 is equipped with lifting suction devices 15, preferably designed as a two-step suction device, and the transport element 8 is preceded by the device for vertical movement 5, in the form of a multi-step suction device (three-step suction device). The sheet transfer from the device for vertical movement 5, which is arranged above the leading edge area of the sheet, to the transport element 8 takes place in the second plane 6 at the sheet transfer point 21.
Arranged in the sheet running direction 10 in front of the feeder sheet stack 1 is a feed table 12 which adjoins the stop 9 and rises in the sheet running direction. The feed table level, the second level 6 and the oscillating path of the transport element are almost identical.
On the side facing the sheet transport drum 13, the feed table 12 is delimited by feed marks 16 extending transversely to the sheet running direction 10. These contact marks 16 are pivotable or lowerable and can be controlled from the sheet path.

Bei der ersten Variante wird der Bogen 2 mittels der als Dreistufensauger ausgebildeten Einrichtung zur Vertikalbewegung 11, welche in das Transportelement 8 integriert ist, in der ersten Ebene 3 im Bogenerfassungspunkt 19 erfaßt, auf die zweite Ebene 6 angehoben, durch die Schwingbewegung des Transportelementes 8 bis zu den Anlegmarken 16 transportiert und dort zum Bogenfreigabepunkt 17 freigegeben.
Danach wird der Dreistufensauger auf die dritte Ebene 18 angehoben, das Transportelement 8 schwingt in seine Ausgangsstellung über den Vorderkantenbereich des obersten Bogens 2 zurück und der Dreistufensauger wird auf die erste Ebene 3 abgesenkt (Fig. 2). In the first variant, the sheet 2 is detected by means of the device for vertical movement 11, which is designed as a three-stage suction device and is integrated in the transport element 8, in the first plane 3 at the sheet detection point 19, raised to the second plane 6 by the oscillating movement of the transport element 8 to transported to the feed marks 16 and released there to the sheet release point 17.
The three-stage suction device is then raised to the third level 18, the transport element 8 swings back into its starting position over the front edge region of the uppermost sheet 2, and the three-stage suction device is lowered to the first level 3 (FIG. 2).

Bei der zweiten Variante wird der Bogen 2 mittels der als Dreistufensauger ausgebildeten Einrichtung zur Vertikalbewegung 11, welche dem Transportelement 8 vorgeordnet ist, in der ersten Ebene 3 im Bogenerfassungspunkt 19 erfaßt, auf die zweite Ebene 6 angehoben und zum Bogenübergabepunkt 21, der oberhalb des Bogenerfassungspunktes 19 liegt, in der zweiten Ebene 6 an den als Zweistufensauger ausgebildeten Hubsauger des Transportelementes 8 übergeben. Danach wird der Dreistufensauger der Einrichtung zur Vertikalbewegung 11 auf eine dritte Ebene 18 angehoben und danach wieder auf die erste Ebene 3 abgesenkt. Durch die Schwingbewegung des Transportelementes 8 wird der übernommene Bogen 2 bis zu den Anlegmarken 16 transportiert und dort zum Bogenfreigabepunkt 17 freigegeben. Danach wird der als Zweistufensauger ausgebildete Hubsauger 15 des Transportelementes 8 auf eine dritte Ebene 18 angehoben, das Transportelement 8 schwingt in seine Ausgangsstellung zurück und der Zweistufensauger wird auf die zweite Ebene 6 abgesenkt (Fig. 3).
Im Freigabepunkt 20 ist die Saugfläche des Hubsaugers 15 parallel oder nahezu parallel zur Ebene des Anlegtisches 12 angeordnet. Unterhalb der Ebene des Anlegtisches 12 ist ein Vorgreifer 22 angeordnet.
Der Vorgreifer 22 ist ebenfalls als Saugerschwinger ausgebildet und um einen Schwenkpunkt 5 schwenkbar.
Der Antrieb des Vorgreifers, beispielsweise mittels eines allgemein bekannten Kurventriebes ist nicht dargestellt.
Der Schwenkpunkt 5 des Vorgreifers, der Bogenfreigabepunkt 20 und der Schwingpunkt 7 des Transportelementes 8 liegen auf einer Geraden oder nahezu auf einer Geraden. Die Bogenübergabe vom Transportelement 8 an den Vorgreifer 22 und vom Vorgreifer 22 an die Bogentransporttrommel 13 erfolgt jeweils tangential bzw. nahezu tangential. Auch der Anfang des Schwingweges des Transportelementes 8 liegt tangential oder nahezu tangential zu einer Parallelebene der ersten Ebene (3), der Anlegerbogenstapelebene.
Nach der Freigabe des Bogens 2 durch das Transportelement 8 am Bogenfreigabepunkt 20 wird der Bogen 2 durch nicht dargestellte Ausrichtmittel an den quer zur Bogenförderrichtung angeordneten Anlegmarken 16 und an seitlich am Anlegtisch angeordneten nicht dargestellten Seitenmarken ausgerichtet. Nachdem die Anlegmarken aus der Bogenbahn gesteuert worden sind wird der Bogen durch den Vorgreifer 22 auf Maschinengeschwindigkeit beschleunigt und an die Greifer der Bogentransporttrommel 13 übergeben.
Der Schwenkpunkt 5 des Vorgreifers 22 ist durch die erfindungsgemäße Anordnung - in Bogenlaufrichtung ansteigender Anlegtisch, als Saugerschwinger ausgebildetes Transportelement, als Saugerschwinger ausgebildeter Vorgreifer und Verbindungsgerade Schwenkpunkt 7, Bogenfreigabepunkt 17, Schwingpunkt 7 - in Bogenlaufrichtung zur Bogentransporttrommel verschoben, wodurch der Bauraum extrem verkürzt wurde und ein längerer Beschleunigungsweg des Bogens erreicht wurde. In the second variant, the sheet 2 is detected in the first level 3 at the sheet detection point 19 by means of the device for vertical movement 11, which is designed as a three-stage suction device and is arranged upstream of the transport element 8, raised to the second level 6 and to the sheet transfer point 21, which is above the sheet detection point 19 lies in the second level 6 to the lifting suction device of the transport element 8, which is designed as a two-stage suction device. The three-stage suction device of the device for vertical movement 11 is then raised to a third level 18 and then lowered again to the first level 3. Due to the oscillating movement of the transport element 8, the sheet 2 taken over is transported to the application marks 16 and released there to the sheet release point 17. Then the lifting suction device 15 of the transport element 8, which is designed as a two-step suction device, is raised to a third level 18, the transport element 8 swings back into its starting position and the two-step suction device is lowered to the second level 6 (FIG. 3).
At the release point 20, the suction surface of the suction lifter 15 is arranged parallel or almost parallel to the plane of the feed table 12. A pre-gripper 22 is arranged below the plane of the feed table 12.
The pre-gripper 22 is also designed as a suction oscillator and can be pivoted about a pivot point 5.
The drive of the pre-gripper, for example by means of a generally known curve drive, is not shown.
The pivot point 5 of the pre-gripper, the sheet release point 20 and the pivot point 7 of the transport element 8 lie on a straight line or almost on a straight line. The sheet transfer from the transport element 8 to the pre-gripper 22 and from the pre-gripper 22 to the sheet transport drum 13 takes place tangentially or almost tangentially. The beginning of the oscillation path of the transport element 8 is also tangential or almost tangential to a parallel plane of the first plane (3), the feeder sheet stack plane.
After the sheet 2 has been released by the transport element 8 at the sheet release point 20, the sheet 2 is aligned by means of alignment means (not shown) on the feed marks 16 arranged transversely to the sheet conveying direction and on side marks (not shown) arranged laterally on the feed table. After the feed marks have been controlled from the sheet path, the sheet is accelerated to machine speed by the pre-gripper 22 and transferred to the grippers of the sheet transport drum 13.
The pivot point 5 of the pre-gripper 22 is moved by the arrangement according to the invention - feed table rising in the sheet running direction, transport element designed as a suction rocker, pre-gripper designed as a suction rocker and connecting straight line pivot point 7, sheet release point 17, swing point 7 - in the sheet running direction to the sheet transport drum, whereby the installation space has been extremely shortened and a longer acceleration path of the bow was achieved.

BezugszeichenaufstellungList of reference symbols

11
AnlegerbogenstapelStack of feeder sheets
22nd
Bogenarc
33rd
erste Ebenefirst floor
44th
GreiferrandGripper edge
55
SchwenkpunktPivot point
66
zweite Ebenesecond level
77
SchwingpunktPivot point
88th
TransportelementTransport element
99
Anschlagattack
1010th
BogenlaufrichtungDirection of sheet travel
1111
Einrichtung zur VertikalbewegungVertical movement device
1212th
AnlegtischFeed table
1313
BogentransporttrommelSheet transport drum
14 1514 15
Hubsauger/MehrstufensaugerLifting vacuum / multi-stage vacuum
1616
AnlegmarkenLanding marks
1717th
FreigabepunktRelease point
1818th
dritte EbeneThird level
1919th
BogenerfassungspunktArc detection point
2020th
BogenfreigabepunktSheet release point
2121
BogenübergabepunktArc transfer point
2222
VorgreiferForerunner
2323
GeradeJust
αα
SchwingwinkelSwing angle

Claims (9)

  1. Appliance for feeding sheets from a feeder pile to a sheet transport drum of a printing press wherein an ascending feeding table (12) following a pile-limiting stop (9) arranged in sheet travel direction (10) in front of the feeder pile (1); and a transport element (6) designed as a swing gripper transporting the sheet to the lay guides (16) of the feeding table above the front edge area of the sheet (2) lying on the feeder pile (1); and a pre-gripper (22) arranged below the feeding table level, designed as a swing gripper transporting the sheet from the lay guides to the sheet transport drum (13) are arranged; and wherein the swing point (7) of the transport element (8), the sheet release point (2)/ transfer point of the sheet (2) from the transport element (8) to the pre-gripper and the swing point of the pre-gripper (22) are lying on the straight line or almost on a straight line.
  2. Appliance for feeding sheets as in claim 1 wherein the sheet is transferred from the transport element (8) to the pre-gripper (22) and from the pre-gripper to the sheet transport drum (13) tangentially or almost tangentially.
  3. Appliance for feeding sheets as in claim 1 wherein the swing angle α of the transport element (8) from the sheet gripping point (19) or sheet transfer point (21), respectively, up to the sheet release point (2) lies below 25 degrees.
  4. Appliance for feeding sheets as in claim 1 wherein the transport element (8) is designed as a suction swing gripper.
  5. Appliance for feeding sheets as in claim 1 wherein the pre-gripper (22) is designed as a suction swing gripper.
  6. Appliance for feeding sheets as in claim 1 wherein the beginning of the swing travel of the transport element (8) is arranged tangentially, or almost tangentially, to a parallel level of a first level (3), the feeder pile level.
  7. Appliance for feeding sheets as in claim 1 wherein the transport element (8) includes an appliance for a vertical movement (11) of the sheet to be separated (2)
  8. Appliance for feeding sheets as in claim 1 wherein an appliance for a vertical movement (11) of the sheet to be separated (2) is arranged in front of the transport element (8).
  9. Appliance for feeding sheets as in claim 7 or 8 wherein the appliance for the vertical movement (11) of the sheet is designed as a lifting sucker/multi-stage sucker (15).
EP97949860A 1996-10-29 1997-10-28 Device for feeding sheets to a conveyor drum in a printing press Expired - Lifetime EP0939739B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19644945A DE19644945A1 (en) 1996-10-29 1996-10-29 Feeder device
DE19644945 1996-10-29
PCT/DE1997/002521 WO1998018703A1 (en) 1996-10-29 1997-10-28 Device for feeding sheets to a conveyor drum in a printing press

Publications (2)

Publication Number Publication Date
EP0939739A1 EP0939739A1 (en) 1999-09-08
EP0939739B1 true EP0939739B1 (en) 2001-05-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97949860A Expired - Lifetime EP0939739B1 (en) 1996-10-29 1997-10-28 Device for feeding sheets to a conveyor drum in a printing press

Country Status (3)

Country Link
EP (1) EP0939739B1 (en)
DE (2) DE19644945A1 (en)
WO (1) WO1998018703A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100391747C (en) * 2004-02-25 2008-06-04 理想科学工业株式会社 Stencil printing machine
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EP0939739A1 (en) 1999-09-08
DE19644945A1 (en) 1998-04-30
DE59703696D1 (en) 2001-07-05

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