EP0358076A1 - Mechanical sheet guide in the feeding device of printing machines - Google Patents

Mechanical sheet guide in the feeding device of printing machines Download PDF

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Publication number
EP0358076A1
EP0358076A1 EP89115816A EP89115816A EP0358076A1 EP 0358076 A1 EP0358076 A1 EP 0358076A1 EP 89115816 A EP89115816 A EP 89115816A EP 89115816 A EP89115816 A EP 89115816A EP 0358076 A1 EP0358076 A1 EP 0358076A1
Authority
EP
European Patent Office
Prior art keywords
sheet
feed table
printing cylinder
printing
sheet guide
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
EP89115816A
Other languages
German (de)
French (fr)
Other versions
EP0358076B1 (en
Inventor
Wolfgang Schales
Paul Abendroth
Roland Höll
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Priority to AT89115816T priority Critical patent/ATE73106T1/en
Publication of EP0358076A1 publication Critical patent/EP0358076A1/en
Application granted granted Critical
Publication of EP0358076B1 publication Critical patent/EP0358076B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F21/00Devices for conveying sheets through printing apparatus or machines
    • B41F21/04Grippers
    • B41F21/05In-feed grippers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00Feeding articles separated from piles; Feeding articles to machines
    • B65H5/08Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
    • B65H5/10Reciprocating or oscillating grippers, e.g. suction or gripper tables
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00Feeding articles separated from piles; Feeding articles to machines
    • B65H5/36Article guides or smoothers, e.g. movable in operation
    • B65H5/38Article guides or smoothers, e.g. movable in operation immovable in operation

Definitions

  • the invention relates to a mechanical sheet guide device according to the preamble of the first claim.
  • Mechanical sheet guiding devices are available in different versions, e.g. known as a bow guide bracket, guide surfaces or the like. However, these mechanical sheet guiding devices do not relate to the sheet system of a printing press.
  • the known mechanical sheet guiding devices can therefore also be used to influence non-critical areas of sheet guiding in a sheet feeder. If the printing speed is selected to be greater than 11,000 or 12,000 sheets / h and papers, in particular thin papers, are processed, a kind of "whip effect" occurs.
  • the rear part of the sheet tilts in a sheet guide, in which the sheet is pulled upwards away from a feed table, the plane of which cuts the impression cylinder to penetrate downwards between the impression cylinder and the feed table.
  • the bow end is still on the feed table. In the manner of a whip, a curl forms at the end of the bow.
  • the swinging claw gripper engages in this curl. This will smash the bow end.
  • the object of the invention is to provide a mechanical sheet guiding device for a sheet machine of the type mentioned, in which the curl formation at the end of the sheet when processing papers, preferably thin papers, is so easily restricted that even at printing speeds of over 11,000 or 12,000 sheets / h there can be no collision between the end of the sheet and the swinging-back vibrating gripper of the pre-gripper vibrating system.
  • a feed table 1 is equipped in a known manner and not shown in the drawing with funding for scaled sheets 4, 5 which are conveyed to front marks 11.
  • Oscillating grippers 8 of a pre-gripper oscillating system 2 take over the aligned sheet 4 at the front end of the feed table 1 and transfer it directly to the gripper of a printing cylinder 3 (not shown in the drawing).
  • the drawing clearly shows that the plane of the plant table 1 intersects the printing cylinder 3.
  • the path 10 of the lower end of the oscillating grippers 8 of the pre-gripper oscillating system 2 is shown in FIG. 1.
  • arc lines 6 are arranged distributed over the arc width.
  • the curved lines 6 extend from the feed table 1 to the impression cylinder 3 of the path 10 of the lower end of the oscillating grippers 8 pivoting towards the impression cylinder 3 approximately in alignment.
  • the space between the pressure cylinder 3 and the front end of the feed table 1 is partially bridged in such a way that the whip effect described with curling upwards at the end of the curve and the risk of collision with the oscillating oscillating grippers 8 is prevented.
  • recesses 12 are provided in the feed table 1 in order to capture the sheet 4 after its alignment with the front marks 11.
  • bores 7, 8 are provided through which, for example, screws or the like. Connection elements can be guided in order to fix the arch lines 6 to the feed table 1 from below in a stationary manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Discharge By Other Means (AREA)
  • Rotary Presses (AREA)
  • Knitting Machines (AREA)

Abstract

In a mechanical sheet guide for a feeding device of a printing machine, in order to restrict curling at the end of the sheet, in the processing of papers, in a very simple manner to the extent that even at printing speeds in excess of 11,000 or 12,000 sheets/hour no collision can occur between the end of the sheet and the returning swing grippers (8) of an auxiliary gripper installation, individual sheet guide tongues (6) are arranged over the width of the sheet below the path (10) of the lower end of the swing grippers (8) swinging toward the printing cylinder (3) and extend from the feeder table (1) to the printing cylinder (3), in a manner approximately adapted to the path (10). <IMAGE>

Description

Die Erfindung betrifft eine mechanische Bogenleiteinrichtung nach dem Oberbegriff des ersten Patentanspruches.The invention relates to a mechanical sheet guide device according to the preamble of the first claim.

Mechanische Bogenleiteinrichtungen sind in verschiedenen Ausfüh­rungen, z.B. als Bogenleitbügel, Führungsflächen oder dgl. bekannt. Diese mechanischen Bogenleiteinrichtungen betreffen aber nicht die Bogenanlage einer Druckmaschine.Mechanical sheet guiding devices are available in different versions, e.g. known as a bow guide bracket, guide surfaces or the like. However, these mechanical sheet guiding devices do not relate to the sheet system of a printing press.

Mit den bekannten mechanischen Bogenleiteinrichtungen können deshalb auch nicht kritische Bereiche der Bogenführung in einer Bogenanlage beeinflußt werden. Wird nämlich die Druckgeschwindigkeit größer als 11 000 bzw. 12 000 Bogen/h gewählt und werden Papiere, insbesondere dünne Papiere verarbeitet, tritt eine Art "Peitscheneffekt" auf. Das hintere Teil des Bogens neigt bei einer Bogenführung, bei der der Bogen nach oben von einem Anlegetisch weggezogen wird, dessen Ebene den Druckzylinder schneidet dazu, zwischen Druckzylinder und Anlege­tisch nach unten durchzuschlagen. Das Bogenende befindet sich dabei noch auf dem Anlegetisch. Nach Art einer Peitsche bildet sich schließlich am Bogenende eine Locke nach oben. In diese Locke greift der rückschwingende Schwinggreifer ein. Dadurch wird das Bogenende zerschlagen.The known mechanical sheet guiding devices can therefore also be used to influence non-critical areas of sheet guiding in a sheet feeder. If the printing speed is selected to be greater than 11,000 or 12,000 sheets / h and papers, in particular thin papers, are processed, a kind of "whip effect" occurs. The rear part of the sheet tilts in a sheet guide, in which the sheet is pulled upwards away from a feed table, the plane of which cuts the impression cylinder to penetrate downwards between the impression cylinder and the feed table. The bow end is still on the feed table. In the manner of a whip, a curl forms at the end of the bow. The swinging claw gripper engages in this curl. This will smash the bow end.

Aufgabe der Erfindung ist es, eine mechanische Bogenleiteinrichtung für eine Bogenanlage genannter Gattung zu schaffen, bei der die Lockenbildung am Bogenende bei der Verarbeitung von Papieren, vor­zugsweise dünnen Papieren, auf einfachste Weise so weit eingeschränkt ist, daß auch bei Druckgeschwindigkeiten über 11 000 bzw. 12 000 Bogen/h keine Kollision des Bogenendes mit dem rückschwingenden Schwinggreifer der Vorgreiferschwinganlage entstehen kann.The object of the invention is to provide a mechanical sheet guiding device for a sheet machine of the type mentioned, in which the curl formation at the end of the sheet when processing papers, preferably thin papers, is so easily restricted that even at printing speeds of over 11,000 or 12,000 sheets / h there can be no collision between the end of the sheet and the swinging-back vibrating gripper of the pre-gripper vibrating system.

Gelöst wird die Aufgabe gemäß dem Kennzeichen des ersten Patentan­spruches. Weiterbildungen ergeben sich aus dem Unteranspruch.The problem is solved according to the characterizing part of the first claim. Further developments result from the subclaim.

Es hat sich überraschend herausgestellt, daß bei einer Bogenanlage genannter Gattung in einfachster Weise nur die spezielle Quer­schnittsausbildung der mechanischen Bogenleitzungen mit der er­findungsgemäßen Angleichung an die Bahn des unteren Endes der zum Druckzylinder schwingenden Schwinggreifer genügend geeignete Stütz- und Auflagepunkte für den abziehenden Bogen im Raum zwischen Druck­zylinder und Anlagetisch bietet, um für Papiere und Druckgeschwindig­keit über 11 000 bzw. 12 000 Bogen/h die Lockenbildung nach oben am Bogenende und damit den Peitscheneffekt mit Kollisionsgefahr am rückschwingenden Schwinggreifer zu verhindern.It has surprisingly been found that in a sheet system of the type mentioned, only the special cross-sectional configuration of the mechanical sheet lines with the inventive adaptation to the path of the lower end of the oscillating gripper that swings to the pressure cylinder provides sufficient suitable support and support points for the sheet being drawn in the space between Printing cylinder and feed table offers to prevent curling upwards at the end of the sheet for papers and printing speeds of over 11,000 or 12,000 sheets / h and thus prevent the whip effect with the risk of collision on the swinging-back vibrating gripper.

Die Erfindung wird anhand einer Zeichnung in einem Ausführungsbei­spiel näher beschrieben.The invention is described in more detail with reference to a drawing in an embodiment.

Es zeigen:

  • Fig. 1 eine Bogenanlage, teilweise im Schnitt,
  • Fig. 2 eine Draufsicht auf die Bogenanlage nach Fig.1, schematisch, teilweise im Schnitt,
  • Fig. 3 eine erfindungsgemäße Bogenleitzunge, im Schnitt,
  • Fig. 4 eine Draufsicht auf die Bogenleitzunge nach Fig. 3.
Show it:
  • 1 an arch system, partly in section,
  • 2 shows a plan view of the sheet feeder according to FIG. 1, schematically, partly in section,
  • 3 an arch guide tongue according to the invention, in section,
  • 4 shows a top view of the sheet guiding tongue according to FIG. 3.

Ein Anlegetisch 1 ist in bekannter und in der Zeichnung nicht darge­stellten Weise mit Fördermitteln für geschuppt herangeführte Bogen 4, 5 ausgerüstet, die zu Vordermarken 11 gefördert werden. Schwing­greifer 8 einer Vorgreiferschwinganlage 2 übernehmen den ausgerich­teten Bogen 4 am vorderen Ende des Anlegetisches 1 und übergeben ihn direkt an in der Zeichnung nicht dargestellte Greifer eines Druck­zylinders 3. Die Zeichnung zeigt deutlich, daß die Ebene des Anlage­tisches 1 den Druckzylinder 3 schneidet.A feed table 1 is equipped in a known manner and not shown in the drawing with funding for scaled sheets 4, 5 which are conveyed to front marks 11. Oscillating grippers 8 of a pre-gripper oscillating system 2 take over the aligned sheet 4 at the front end of the feed table 1 and transfer it directly to the gripper of a printing cylinder 3 (not shown in the drawing). The drawing clearly shows that the plane of the plant table 1 intersects the printing cylinder 3.

Die Bahn 10 des unteren Endes der Schwinggreifer 8 der Vorgreifer­schwinganlage 2 ist in Fig. 1 dargestellt.The path 10 of the lower end of the oscillating grippers 8 of the pre-gripper oscillating system 2 is shown in FIG. 1.

Unter der Bahn 10 des unteren Endes der zum Druckzylinder 3 hin­schwenkenden Schwinggreifer 8 sind Bogenleitzungen 6 über die Bogen­breite verteilt angeordnet. Am Anlegetisch 1 steht dabei zwischen den schwingenden Schwinggreifern 8 ausreichend Raum zum Anbringen einzel­ner Bogenleitzungen 6 zur Verfügung (siehe Fig. 2). Die Bogenleit­zungen 6 erstrecken sich vom Anlegetisch 1 zum Druckzylinder 3 der Bahn 10 des unteren Endes der zum Druckzylinder 3 hinschwenkenden Schwinggreifer 8 annähernd angeglichen. Dadurch wird partiell der Raum zwischen dem Druckzylinder 3 und dem vorderen Ende des Anlege­tisches 1 in einer Weise überbrückt, das der beschriebene Peitschen­effekt mit einer Lockenbildung nach oben am Bogenende und der Kolli­sionsgefahr mit den schwingenden Schwinggreifern 8 verhindert wird.Under the path 10 of the lower end of the oscillating grippers 8 pivoting towards the printing cylinder 3, arc lines 6 are arranged distributed over the arc width. At the feed table 1 there is sufficient space between the oscillating oscillating grippers 8 for attaching individual curved lines 6 (see FIG. 2). The curved lines 6 extend from the feed table 1 to the impression cylinder 3 of the path 10 of the lower end of the oscillating grippers 8 pivoting towards the impression cylinder 3 approximately in alignment. As a result, the space between the pressure cylinder 3 and the front end of the feed table 1 is partially bridged in such a way that the whip effect described with curling upwards at the end of the curve and the risk of collision with the oscillating oscillating grippers 8 is prevented.

Es ist bekannt, daß Aussparungen 12 im Anlegetisch 1 vorgesehen sind, um den Bogen 4 nach seiner Ausrichtung an den Vordermarken 11 zu erfassen.It is known that recesses 12 are provided in the feed table 1 in order to capture the sheet 4 after its alignment with the front marks 11.

An dem einen Ende der Bogenleitzungen 6 sind Bohrungen 7, 8 vorge­sehen, durch die beispielsweise Schrauben oder dgl. Verbindungsele­mente geführt werden können, um die Bogenleitzungen 6 von unten am Anlegetisch 1 stationär zu befestigen.At one end of the arch lines 6, bores 7, 8 are provided through which, for example, screws or the like. Connection elements can be guided in order to fix the arch lines 6 to the feed table 1 from below in a stationary manner.

BezugszeichenlisteReference symbol list

  • 1 Anlegetisch1 feed table
  • 2 Vorgreiferschwinganlage2 pre-vibrating system
  • 3 Druckzylinder3 pressure cylinders
  • 4 Bogen4 sheets
  • 5 nächstfolgender Bogen5 next sheet
  • 6 Bogenleitzunge6 arch guide
  • 7 Bohrung7 hole
  • 8 Schwinggreifer8 rocking grippers
  • 9 Bohrung9 hole
  • 10 Bahn des unteren Endes der Schwinggreifers 11 Vordermarke 12 Aussparung10 path of the lower end of the rocking gripper 11 front mark 12 recess

Claims (2)

1.) Mechanische Bogenleiteinrichtung in der Bogenanlage von Druck­maschinen mit einer von oben arbeitenden Vorgreiferschwinganlage und mit einem vor der Vorgreiferschwinganlage angeordneten An­legetisch, wobei die Bogenzuführung vom Anlegetisch zu einem Druckzylinder durch Schwinggreifer erfolgt und die Ebene des Anlegetisches den Druckzylinder schneidet,
dadurch gekennzeichnet,
daß unterhalb der Bahn (10) des unteren Endes der zum Druck­zylinder (3) hinschwenkenden Schwinggreifer (8) einzelne Bogen­leitzungen (6) über die Bogenbreite verteilt angeordnet sind und daß sich die Bogenleitzungen (6) vom Anlegetisch (1) zum Druck­zylinder (3) hin der Bahn (10) annähernd angeglichen erstrecken.
1.) Mechanical sheet guiding device in the sheet-fed machine of printing presses with a pre-gripper vibrating system working from above and with a feed table arranged in front of the pre-gripper vibrating system, the sheet feeding from the feed table to a printing cylinder being effected by rocking grippers and the level of the feeding table cutting the printing cylinder,
characterized by
that underneath the path (10) of the lower end of the oscillating grippers (8) swinging towards the printing cylinder (3), individual sheet lines (6) are arranged distributed over the sheet width and that the sheet lines (6) extend from the feed table (1) to the printing cylinder (3) towards the web (10) extend approximately aligned.
2.) Mechanische Bogenleiteinrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß an einem Ende (7, 9) jede Bogenleitzunge (6) am Anlegetisch (1) von unten befestigt ist.
2.) Mechanical sheet guide device according to claim 1,
characterized by
that at one end (7, 9) each sheet guide tongue (6) on the feed table (1) is attached from below.
EP89115816A 1988-09-03 1989-08-28 Mechanical sheet guide in the feeding device of printing machines Expired - Lifetime EP0358076B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89115816T ATE73106T1 (en) 1988-09-03 1989-08-28 MECHANICAL SHEET GUIDE IN THE SHEET FEED ON PRINTING PRESSES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3830070A DE3830070A1 (en) 1988-09-03 1988-09-03 MECHANICAL BOW GUIDE DEVICE IN BOWING MACHINE ON PRINTING MACHINES
DE3830070 1988-09-03

Publications (2)

Publication Number Publication Date
EP0358076A1 true EP0358076A1 (en) 1990-03-14
EP0358076B1 EP0358076B1 (en) 1992-03-04

Family

ID=6362289

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89115816A Expired - Lifetime EP0358076B1 (en) 1988-09-03 1989-08-28 Mechanical sheet guide in the feeding device of printing machines

Country Status (4)

Country Link
EP (1) EP0358076B1 (en)
AT (1) ATE73106T1 (en)
DE (2) DE3830070A1 (en)
ES (1) ES2030567T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10355459A1 (en) * 2003-11-27 2005-06-23 Koenig & Bauer Ag Feeder for paper sheets has plate, from which sheets are transferred by grippers to feed drum, plate being concentric with pivot of grippers and slightly below tops of gripper fingers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1761703B1 (en) * 1967-06-28 1971-12-09 Gestetner Ltd BOW CONVEYOR
DE2724856B2 (en) * 1977-06-02 1979-03-15 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Sheet-fed rotary printing machine
DD203887A1 (en) * 1981-12-31 1983-11-09 Dieter Erfurt DEVICE FOR SUPPORTING ARC FURNISHING AND TRANSFER

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2330484C3 (en) * 1973-06-15 1980-08-14 Koenig & Bauer Ag, 8700 Wuerzburg Device for creating and feeding individual, flaked sheets in sheet-fed rotary thinning machines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1761703B1 (en) * 1967-06-28 1971-12-09 Gestetner Ltd BOW CONVEYOR
DE2724856B2 (en) * 1977-06-02 1979-03-15 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Sheet-fed rotary printing machine
DD203887A1 (en) * 1981-12-31 1983-11-09 Dieter Erfurt DEVICE FOR SUPPORTING ARC FURNISHING AND TRANSFER

Also Published As

Publication number Publication date
DE58900913D1 (en) 1992-04-09
EP0358076B1 (en) 1992-03-04
DE3830070A1 (en) 1990-03-15
ATE73106T1 (en) 1992-03-15
ES2030567T3 (en) 1992-11-01

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