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EP0677466A1 - Method and device for underlapped feeding of sheet-like material to a printing machine - Google Patents

Method and device for underlapped feeding of sheet-like material to a printing machine Download PDF

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Publication number
EP0677466A1
EP0677466A1 EP95104530A EP95104530A EP0677466A1 EP 0677466 A1 EP0677466 A1 EP 0677466A1 EP 95104530 A EP95104530 A EP 95104530A EP 95104530 A EP95104530 A EP 95104530A EP 0677466 A1 EP0677466 A1 EP 0677466A1
Authority
EP
European Patent Office
Prior art keywords
conveyor table
opening
conveying direction
compressed air
sheet
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
EP95104530A
Other languages
German (de)
French (fr)
Other versions
EP0677466B1 (en
Inventor
Karl-Ludwig Maier
Arno Gärtner
Nikola Pupic
Bert Cappel
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
Publication of EP0677466A1 publication Critical patent/EP0677466A1/en
Application granted granted Critical
Publication of EP0677466B1 publication Critical patent/EP0677466B1/en
Anticipated expiration legal-status Critical
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H11/00Feed tables
    • B65H11/002Feed tables incorporating transport belts
    • B65H11/005Suction belts
    • 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
    • B65H5/22Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
    • B65H5/228Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by air-blast devices
    • 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
    • B65H5/24Feeding articles in overlapping streams, i.e. by separation of articles from a pile
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00Means using fluid
    • B65H2406/30Suction means
    • B65H2406/32Suction belts
    • B65H2406/321Suction belts integral in feed table

Definitions

  • the invention relates to a method and a device for the shingled feeding of sheet-shaped printing materials to a printing press with a conveyor table, preferably a suction belt table in a rotary printing press.
  • a sheet conveyor of this type is e.g. known from DE-PS 713 529 in which endless suction belts rotating in the direction of the sheet run are guided over fixed suction containers provided with suction slots.
  • a sheet conveying device with endless suction belts which are guided around the conveying table via narrow suction channels and feed the printed sheets to the printing press by means of negative pressure.
  • further blowing openings are provided in addition to the suction openings of the suction chambers in the table.
  • the blowing air is said to cause the individually sucked-in sheet to lift slightly and to float on an air cushion.
  • This solution tries to reduce the static friction between the sheet and the conveyor table. In the case of substrates that are transported under shingles, however, this leads to lifting off the conveyor belts, since here each sheet is only guided in the front area on the suction belts.
  • a conveyor table with perforated suction belts running around suction openings is known, which has openings parallel to the edges of each suction belt, which are connected to the environment separately from the suction space.
  • the object of the invention is to develop a solution which eliminates the disadvantages mentioned above.
  • compressed air is blown against the conveying direction at a defined angle onto the conveyor table or in the region of the alignment unit between the scale stream, preferably between the front, arcuate printing materials of the scale stream facing the printing unit.
  • This has the effect that the imbricated substrates are safely fed via the conveyor table to the printing unit and at the same time the adhesive forces in the stream of shingles are eliminated or noticeably reduced in a defined area.
  • the device according to the invention is arranged in the region of the alignment unit or in the region of the conveyor table facing the printing unit. This is because at the latest when the printing material is applied to the front / cover marks, the adhesive forces between the neighboring printing materials must have been eliminated.
  • the solution according to the invention achieves smooth sheet transport even at higher machine speeds. This eliminates the disadvantages, such as multiple sheets or missing sheets, waves or deformations on the substrate.
  • a conveyor table 1 in the form of a suction belt table is arranged between a printing unit 2 and a feeder 3. It has a suction chamber 5, on the underside of which an axial fan 6 is connected. Suction chamber 5 and axial fan 6 form a common storage space for building up the required negative pressure.
  • Perforated suction belts 7 are guided in a conveyor table surface 10. The suction belts 7 are guided on the underside of the conveyor table 1 via tensioning rollers 9 and on the end faces via driving or leading shafts 8.
  • the conveyor table 1 is continuously broken through in the area of the suction belts 7, so that a suction air flow is present over the entire length of the conveyor table.
  • An alignment unit 4 with front marks 11 is arranged between the conveyor table 1 and the printing unit 2.
  • the conveyor table 1 and the alignment unit 4 are shown from the top.
  • a contact plate 15 and several front marks 11 are shown as part of the alignment unit 4.
  • the suction belts 7 are embedded in guide grooves in the conveyor table surface 10 and have evenly distributed suction openings 14. Parallel to the edges of each suction belt 7, ventilation openings 23 are arranged on both sides in the conveyor table 1, which are connected to the environment separately from the suction chamber 5.
  • a plurality of blowing devices 13 are arranged in a row transversely to the conveying direction 12 of the scale flow.
  • the stream of shingles is represented here by the shingled arches 16 to 18.
  • Fig. 3 the stream of shingles, formed by the arches 16 to 18, on the conveyor table surface 10 or the alignment unit 4 is shown schematically.
  • the first sheet 16 lies against the front marks 11 and the rear end lies above the sheet front edge of the sheet 17 following in the conveying direction 12.
  • the rear end of the sheet 17 covers the sheet front edge of the subsequent sheet 18.
  • the blowing device 13 is integrated in the conveyor table surface 10 .
  • the blowing device 13 is shown.
  • the blowing device 13 is embedded in the conveyor table surface 10. It can also be sunk somewhat deeper, but must not protrude from the level of the conveyor table surface 10.
  • the blowing device 13 consists essentially of a base body 21 which is detachably connected to the conveyor table 1.
  • the base body 21 carries an air-permeable surface which is formed from a multiplicity of openings due to a microporous structure 20.
  • the microporous structure 20 is preferably made of a sintered metal.
  • an opening 19 which is inclined at an acute angle ⁇ to the conveying table surface 10 counter to the conveying direction 12.
  • the preferred angular range of the inclined opening 19 is between 20 ° and 40 °.
  • opening 19 is transverse to conveying direction 12 extending slot formed.
  • several slots or bores can be arranged next to one another in the structure 20 and can be inclined at an angle ⁇ .
  • the base body 21 is connected to a compressed air supply 22.
  • FIG. 5 is shown analogously to FIG. 2, but the blowing device 13 is arranged separately in the microporous structure 20 and in the opening 19, here as a slot. Structure 20 and associated opening 19 are inserted into the conveyor table surface 10 in multiple rows across the conveying direction 12 of the printing materials 16 to 18. All blowing devices 13 of this embodiment are coupled to a common compressed air supply 22 (for all structures 20 with associated openings 19).
  • the blowing devices 13 with the microporous structure 20 and openings 19 connected to the compressed air guide 22 can also be arranged in multiple rows transversely to the conveying direction 12 and can additionally be arranged displaceably in the conveying direction 12.
  • the blowing devices 13 running transversely to the conveying direction are preferably arranged in the region of the conveying table 1 facing the printing unit 2 or in the region of the aligning unit 4.
  • the mode of action is as follows:
  • the printing material to be processed is fed from the feeder 3 in shingled form as a shingled stream in the conveying direction 12 to the printing unit 2.
  • the lower, front part of the printing material is transported by the suction belts 7 in a manner known per se and transported over the conveyor table surface 10.
  • each printing material is aligned on its front and side edge after it has been released beforehand by the suction belts 7 and the conveyor table surface 10.
  • compressed air flows continuously from each blowing device 13 under the stream of flakes.
  • each sheet 16 to 18 is securely fixed on the suction belts 7, but at the same time between the conveying table surface 10 and the stream of shingles and in particular between the shingled sheets 16 to 18, the adhesive forces or static charges (in the case of film) by building up an air cushion be canceled or greatly reduced.
  • the static friction between shingled sheets 16 to 18 in the shingled stream or the movement friction when aligning each individual sheet 16 to 18 in the alignment unit 4 is reduced, so that the shingled sheets 16 to 18 are transported exactly and professionally into the printing unit 2.

Landscapes

  • 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)
  • Registering Or Overturning Sheets (AREA)

Abstract

The sheet feed system supplies the sheets (16, 17, 18) to the printing machine in overlapping format, using a suction band table (1). A pressurised air stream is supplied in opposition to the transport direction (12) of the overlapping sheet stream, via a jet device (13), with a number of relatively small openings within a microporous structure and adjacent openings of larger dia. Pref. the larger dia. openings are provided by slits extending across the surface of each microporous structure and angle in opposition to the sheet transport direction. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum unterschuppten Zuführen bogenförmiger Bedruckstoffe an eine Druckmaschine mit einem Fördertisch, vorzugsweise einem Saugbändertisch in einer Rotationsdruckmaschine.The invention relates to a method and a device for the shingled feeding of sheet-shaped printing materials to a printing press with a conveyor table, preferably a suction belt table in a rotary printing press.

Eine Bogenfördervorrichtung dieser Art ist z.B. aus der DE-PS 713 529 bekannt bei der endlose, in Richtung des Bogenlaufes umlaufende Saugbänder über feststehende, mit Saugschlitzen versehene Saugbehälter geführt werden.A sheet conveyor of this type is e.g. known from DE-PS 713 529 in which endless suction belts rotating in the direction of the sheet run are guided over fixed suction containers provided with suction slots.

Weitere Fördereinrichtungen dieser Art sind beispielsweise aus den DE 3 331 662 C2 und DE 3 838 078 A1 bekannt.Further conveyor devices of this type are known for example from DE 3 331 662 C2 and DE 3 838 078 A1.

Aus der DE-AS 1 033 225 ist eine Bogenfördervorrichtung mit endlosen Saugbändern bekannt, die um den Fördertisch über schmale Saugkanäle geführt werden und die Druckbogen mittels Unterdruck an die Druckmaschine zuführen. Um das Schleifen, insbesondere der hinteren Enden, der Druckbogen auf dem Fördertisch und daraus resultierende Beschädigungen beim Zuführen über den Tisch zu vermeiden, sind neben den Saugöffnungen der Saugkammern im Tisch weitere Blasöffnungen vorgesehen. Die Blasluft soll bewirken, daß der einzeln angesaugte Bogen leicht anhebt und auf einem Luftpolster schwebt. Mit dieser Lösung wird versucht die Haftreibung zwischen Bogen und Fördertisch zu reduzieren. Bei unterschuppt transportierten Bedruckstoffen führt dies jedoch zum Abheben von den Transportbändern, da hier jeder Bogen nur im vorderen Bereich auf den Saugbändern geführt wird.From DE-AS 1 033 225 a sheet conveying device with endless suction belts is known, which are guided around the conveying table via narrow suction channels and feed the printed sheets to the printing press by means of negative pressure. In order to avoid grinding, in particular the rear ends, the printed sheets on the conveyor table and the resulting damage when feeding them over the table, further blowing openings are provided in addition to the suction openings of the suction chambers in the table. The blowing air is said to cause the individually sucked-in sheet to lift slightly and to float on an air cushion. This solution tries to reduce the static friction between the sheet and the conveyor table. In the case of substrates that are transported under shingles, however, this leads to lifting off the conveyor belts, since here each sheet is only guided in the front area on the suction belts.

Gemäß DE 4 012 948 C2 ist ein Fördertisch mit über Saugöffnungen umlaufenden, gelochten Saugbändern bekannt, welcher parallel entlang der Ränder eines jeden Saugbandes Öffnungen aufweist, die getrennt vom Saugraum mit der Umgebung verbunden sind.According to DE 4 012 948 C2, a conveyor table with perforated suction belts running around suction openings is known, which has openings parallel to the edges of each suction belt, which are connected to the environment separately from the suction space.

Nachteilig bei diesen Lösungen ist es, daß bei - infolge von Adhäsion bzw. statischer Aufladung - stark aneinander haftenden Bedruckstoffen, wie beispielsweise Folien, der voreilende Bedruckstoff den im Schuppenstrom nachfolgenden Bedruckstoff beim Einlaufen in die Druckeinheit mitreißt. Dies bedeutet, daß der nachfolgende Bedruckstoff als Mehrfachbogen bzw. Fehlbogen über die Vorder- bzw. Deckmarken "schießt", Wellen bildet und bei der Übernahme vom Vorgreifer bzw. beim Einlauf in die Druckzone staucht, was zur Deformation und zu Stoppern führt.The disadvantage of these solutions is that in the case of substrates which adhere strongly to one another, as a result of adhesion or static charge, such as, for example, films, the leading substrate carries the substrate following in the shingled stream as it enters the printing unit. This means that the subsequent printing material "shoots" as multiple sheets or missing sheets over the front or cover marks, forms waves and compresses when it is taken over by the pre-gripper or when it enters the printing zone, which leads to deformation and stoppers.

Aufgabe der Erfindung ist es eine Lösung zu entwickeln, die die oben genannten Nachteile beseitigt.The object of the invention is to develop a solution which eliminates the disadvantages mentioned above.

Gelöst wird die Aufgabe durch die kennzeichnenden Merkmale der Patentansprüche 1, 3 und 10. Weiterbildungen ergeben sich aus den Unteransprüchen.The object is achieved by the characterizing features of claims 1, 3 and 10. Further developments result from the subclaims.

Durch die erfindungsgemäße Lösung wird auf den Fördertisch oder im Bereich der Ausrichteeinheit zwischen dem Schuppenstrom, vorzugsweise zwischen die vorderen, der Druckeinheit zugewandten, bogenförmigen Bedruckstoffe des Schuppenstromes Druckluft entgegen der Förderrichtung in einem definierten Winkel geblasen. Dies bewirkt, daß die unterschuppten Bedruckstoffe sicher über den Fördertisch der Druckeinheit zugeführt werden und gleichzeitig die Adhäsionskräfte im Schuppenstrom in einem definierten Bereich aufgehoben oder spürbar reduziert werden. Die erfindungsgemäße Vorrichtung ist im Bereich der Ausrichteeinheit oder dem der Druckeinheit zugewandten Bereich des Fördertisches angeordnet. Dies weil spätestens bei Anlage des Bedruckstoffes an den Vorder-/Deckmarken die Aufhebung der Adhäsionskräfte zwischen den benachbarten Bedruckstoffen erfolgt sein muß.By means of the solution according to the invention, compressed air is blown against the conveying direction at a defined angle onto the conveyor table or in the region of the alignment unit between the scale stream, preferably between the front, arcuate printing materials of the scale stream facing the printing unit. This has the effect that the imbricated substrates are safely fed via the conveyor table to the printing unit and at the same time the adhesive forces in the stream of shingles are eliminated or noticeably reduced in a defined area. The device according to the invention is arranged in the region of the alignment unit or in the region of the conveyor table facing the printing unit. This is because at the latest when the printing material is applied to the front / cover marks, the adhesive forces between the neighboring printing materials must have been eliminated.

Die erfindungsgemäße Lösung erzielt einen ruhigen Bogentransport auch bei höheren Maschinengeschwindigkeiten. Die Nachteile, wie Mehrfachbogen bzw. Fehlbogen, Wellen schlagen oder Deformationen am Bedruckstoff sind damit beseitigt.The solution according to the invention achieves smooth sheet transport even at higher machine speeds. This eliminates the disadvantages, such as multiple sheets or missing sheets, waves or deformations on the substrate.

Die Erfindung soll an einem Ausführungsbeispiel näher erläutert werden. Dabei zeigen

Fig. 1
die schematische Anordnung eines Fördertisches in einer bogenverarbeitenden Druckmaschine,
Fig. 2
eine schematische Draufsicht auf einen Fördertisch,
Fig. 3
eine schematische Darstellung des Schuppenstromes im Bereich der Ausrichteeinheit und des Fördertisches,
Fig. 4
eine Seitenansicht (Schnitt) einer Blaseinrichtung,
Fig. 5
eine weitere schematische Draufsicht auf einen Fördertisch.
The invention will be explained in more detail using an exemplary embodiment. Show
Fig. 1
the schematic arrangement of a conveyor table in a sheet-processing printing machine,
Fig. 2
a schematic plan view of a conveyor table,
Fig. 3
1 shows a schematic representation of the scale flow in the area of the alignment unit and the conveyor table,
Fig. 4
a side view (section) of a blowing device,
Fig. 5
another schematic plan view of a conveyor table.

Nach Fig. 1 ist zwischen einer Druckeinheit 2 und einem Anleger 3 ein Fördertisch 1 in Form eines Saugbändertisches angeordnet. Er besitzt einen Saugraum 5, an dessen Unterseite ein Axiallüfter 6 angeschlossen ist. Saugraum 5 und Axiallüfter 6 bilden einen gemeinsamen Speicherraum zum Aufbauen des erforderlichen Unterdrucks. In einer Fördertischfläche 10 werden gelochte Saugbänder 7 geführt. Die Saugbänder 7 werden an der Unterseite des Fördertisches 1 über Spannrollen 9 und an den Stirnseiten über antreibende bzw. führende Wellen 8 geführt. Der Fördertisch 1 ist im Bereich der Saugbänder 7 kontinuierlich durchbrochen, so daß über die gesamte Länge des Fördertisches eine Saugluftströmung anliegt. Zwischen Fördertisch 1 und der Druckeinheit 2 ist eine Ausrichteeinheit 4 mit Vordermarken 11 angeordnet.1, a conveyor table 1 in the form of a suction belt table is arranged between a printing unit 2 and a feeder 3. It has a suction chamber 5, on the underside of which an axial fan 6 is connected. Suction chamber 5 and axial fan 6 form a common storage space for building up the required negative pressure. Perforated suction belts 7 are guided in a conveyor table surface 10. The suction belts 7 are guided on the underside of the conveyor table 1 via tensioning rollers 9 and on the end faces via driving or leading shafts 8. The conveyor table 1 is continuously broken through in the area of the suction belts 7, so that a suction air flow is present over the entire length of the conveyor table. An alignment unit 4 with front marks 11 is arranged between the conveyor table 1 and the printing unit 2.

In Fig. 2 ist der Fördertisch 1 sowie die Ausrichteeinheit 4 von der Oberseite aus gezeigt. Als Bestandteil der Ausrichteeinheit 4 sind ein Anlageblech 15 sowie mehrere Vordermarken 11 dargestellt. Die Saugbänder 7 sind in Führungsnuten in die Fördertischfläche 10 eingelassen und weisen gleichmäßig verteilte Saugöffnungen 14 auf. Parall der Ränder eines jeden Saugbandes 7 sind beiderseits Beluftungsöffnungen 23 im Fördertisch 1 angeordnet, die getrennt vom Saugraum 5 mit der Umgebung verbunden sind. Im Fördertisch 1 sind in der Nähe der Ausrichteeinheit 4 mehrere Blaseinrichtungen 13 in einer Reihe quer zur Förderrichtung 12 des Schuppenstromes angeordnet. Der Schuppenstrom ist hier durch die geschuppt angeordneten Bogen 16 bis 18 dargestellt.2, the conveyor table 1 and the alignment unit 4 are shown from the top. A contact plate 15 and several front marks 11 are shown as part of the alignment unit 4. The suction belts 7 are embedded in guide grooves in the conveyor table surface 10 and have evenly distributed suction openings 14. Parallel to the edges of each suction belt 7, ventilation openings 23 are arranged on both sides in the conveyor table 1, which are connected to the environment separately from the suction chamber 5. In the conveyor table 1, in the vicinity of the alignment unit 4, a plurality of blowing devices 13 are arranged in a row transversely to the conveying direction 12 of the scale flow. The stream of shingles is represented here by the shingled arches 16 to 18.

In Fig. 3 ist der Schuppenstrom, gebildet durch die Bogen 16 bis 18, auf der Fördertischfläche 10 bzw. der Ausrichteeinheit 4 schematisch dargestellt. Der erste Bogen 16 liegt an den Vordermarken 11 an und das hintere Ende liegt oberhalb der Bogenvorderkante des in Förderrichtung 12 nachfolgenden Bogens 17. Ebenso überdeckt das hintere Ende des Bogens 17 die Bogenvorderkante der nachfolgenden Bogens 18. Die Blaseinrichtung 13 ist in die Fördertischfläche 10 integriert.In Fig. 3, the stream of shingles, formed by the arches 16 to 18, on the conveyor table surface 10 or the alignment unit 4 is shown schematically. The first sheet 16 lies against the front marks 11 and the rear end lies above the sheet front edge of the sheet 17 following in the conveying direction 12. Likewise, the rear end of the sheet 17 covers the sheet front edge of the subsequent sheet 18. The blowing device 13 is integrated in the conveyor table surface 10 .

Gemäß Fig. 4 ist die Blaseinrichtung 13 darstellt. In die Fördertischfläche 10 ist die Blaseinrichtung 13 eingelassen. Sie kann auch etwas tiefer eingesenkt werden, darf jedoch nicht aus der Ebene der Fördertischfläche 10 hervorragen. Die Blaseinrichtung 13 besteht im wesentlichen aus einem Grundkörper 21, der mit dem Fördertisch 1 lösbar verbunden ist. Der Grundkörper 21 trägt eine luftdurchlässige Fläche, die aus einer Vielzahl von Öffnungen aufgrund einer mikroporösen Struktur 20 gebildet ist. Die mikroporöse Struktur 20 ist vorzugsweise aus einem Sintermetall hergestellt. In die Struktur 20 integriert ist eine Öffnung 19, die entgegen der Förderrichtung 12 in einem spitzen Winkel α zur Fördertischfläche 10 geneigt ist. Der bevorzugte Winkel bereich der geneigten Öffnung 19 liegt zwischen 20° und 40°. Im vorliegenden Beispiel ist die Öffnung 19 als quer zur Förderrichtung 12 verlaufender Schlitz ausgebildet. Ebenso können mehrere Schlitze oder Bohrungen nebeneinander in der Struktur 20 angeordnet und in einem Winkel α geneigt sein. Der Grundkörper 21 ist mit einer Druckluftzuführung 22 verbunden.4, the blowing device 13 is shown. The blowing device 13 is embedded in the conveyor table surface 10. It can also be sunk somewhat deeper, but must not protrude from the level of the conveyor table surface 10. The blowing device 13 consists essentially of a base body 21 which is detachably connected to the conveyor table 1. The base body 21 carries an air-permeable surface which is formed from a multiplicity of openings due to a microporous structure 20. The microporous structure 20 is preferably made of a sintered metal. Integrated into the structure 20 is an opening 19 which is inclined at an acute angle α to the conveying table surface 10 counter to the conveying direction 12. The preferred angular range of the inclined opening 19 is between 20 ° and 40 °. In the present example, opening 19 is transverse to conveying direction 12 extending slot formed. Likewise, several slots or bores can be arranged next to one another in the structure 20 and can be inclined at an angle α. The base body 21 is connected to a compressed air supply 22.

Fig. 5 ist analog Fig. 2 dargestellt, jedoch ist die Blaseinrichtung 13 in die mikroporöse Struktur 20 und in die Öffnung 19, hier als Schlitz, getrennt angeordnet. Struktur 20 und zugeordnete Öffnung 19 sind mehrfach einreihig quer zur Forderrichtung 12 der Bedruckstoffe 16 bis 18 in die Fördertischfläche 10 eingelassen. Alle Blaseinrichtungen 13 dieser Ausführung sind mit einer gemeinsamen Druckluftzuführung 22 (für alle Strukturen 20 mit zugeordneten Öffnungen 19) gekoppelt.FIG. 5 is shown analogously to FIG. 2, but the blowing device 13 is arranged separately in the microporous structure 20 and in the opening 19, here as a slot. Structure 20 and associated opening 19 are inserted into the conveyor table surface 10 in multiple rows across the conveying direction 12 of the printing materials 16 to 18. All blowing devices 13 of this embodiment are coupled to a common compressed air supply 22 (for all structures 20 with associated openings 19).

In einem weiteren, hier nicht gezeigten Beispiel können die mit Druckluftführung 22 verbundenen Blaseinrichtungen 13 mit mikroporöse Struktur 20 und Öffnungen 19 auch mehrreihig quer zur Förderrichtung 12 angeordnet und zusätzlich in Förderrichtung 12 verschiebbar angeordnet sein. Die quer zur Förderrichtung verlaufenden Blaseinrichtungen 13 sind vorzugsweise in dem der Druckeinheit 2 zugewandten Bereich des Fördertischesl oder im Bereich der Ausrichteeinheit 4 angeordnet. Bei Betrachtung des Schuppenstromes vor den Vordermarken 11 wurde gefunden, daß die Aufhebung bzw. Reduzierung der Adhäsion bei den unterschuppten Bedruckstoffen im Bereich zwischen dem ersten und dritten Bogen 16 bis 18 optimal ist.In a further example, not shown here, the blowing devices 13 with the microporous structure 20 and openings 19 connected to the compressed air guide 22 can also be arranged in multiple rows transversely to the conveying direction 12 and can additionally be arranged displaceably in the conveying direction 12. The blowing devices 13 running transversely to the conveying direction are preferably arranged in the region of the conveying table 1 facing the printing unit 2 or in the region of the aligning unit 4. When considering the stream of shingles in front of the front marks 11, it was found that the removal or reduction of the adhesion in the under-scaled printing materials in the region between the first and third sheets 16 to 18 is optimal.

Die Wirkungsweise ist wie folgt:
Vom Anleger 3 wird der zu verarbeitende Bedruckstoff in unterschuppter Form als Schuppenstrom in Förderrichtung 12 auf die Druckeinheit 2 zugeführt. Der jeweils untere, vordere Teil des Bedruckstoffes wird von den Saugbändern 7 in an sich bekannter Weise fest angesaugt über die Fördertischfläche 10 transportiert. In der Ausrichteeinheit 4 wird jeder Bedruckstoff an seiner Vorder- und Seitenkante ausgerichtet, nachdem er vorher von den Saugbändern 7 und der Fördertischfläche 10 freigegeben wurde. Wird der unterschuppte Bedruckstoff in Form vom Bogen 16 bis 18 in Förderrichtung 12 auf die Vordermarken 11 zugeführt, so strömt kontinuierlich, entgegen der Förderrichtung 12, aus jeder Blaseinrichtung 13 Druckluft unter den Schuppenstrom. Die Druckluft ist so dosiert, daß jeder Bogen 16 bis 18 sicher auf den Saugbändern 7 fixiert ist, gleichzeitig aber zwischen Fördertischfläche 10 und Schuppenstrom und insbesondere zwischen den unterschuppten Bogen 16 bis 18 die Adhäsionskräfte bzw. statische Aufladungen (bei Folie) durch Aufbau eines Luftpolsters aufgehoben bzw. stark reduziert werden. Die Haftreibung zwischen unterschuppten Bogen 16 bis 18 im Schuppenstrom bzw. die Bewegungsreibung beim Ausrichten jedes einzelnen Bogens 16 bis 18 in der Ausrichteeinheit 4 wird reduziert, so daß die unterschuppten Bogen 16 bis 18 exakt getrennt und fachgerecht in die Druckeinheit 2 transportiert werden.
The mode of action is as follows:
The printing material to be processed is fed from the feeder 3 in shingled form as a shingled stream in the conveying direction 12 to the printing unit 2. The lower, front part of the printing material is transported by the suction belts 7 in a manner known per se and transported over the conveyor table surface 10. In the alignment unit 4, each printing material is aligned on its front and side edge after it has been released beforehand by the suction belts 7 and the conveyor table surface 10. Will the undersupplied printing material in the form of sheets 16 to 18 fed in the conveying direction 12 to the front marks 11, then, contrary to the conveying direction 12, compressed air flows continuously from each blowing device 13 under the stream of flakes. The compressed air is metered so that each sheet 16 to 18 is securely fixed on the suction belts 7, but at the same time between the conveying table surface 10 and the stream of shingles and in particular between the shingled sheets 16 to 18, the adhesive forces or static charges (in the case of film) by building up an air cushion be canceled or greatly reduced. The static friction between shingled sheets 16 to 18 in the shingled stream or the movement friction when aligning each individual sheet 16 to 18 in the alignment unit 4 is reduced, so that the shingled sheets 16 to 18 are transported exactly and professionally into the printing unit 2.

BezugszeichenaufstellungList of reference symbols

11
FördertischPromotion table
22nd
DruckeinheitPrinting unit
33rd
AnlegerInvestors
44th
AusrichteeinheitAlignment unit
55
SaugraumSuction chamber
66
AxiallüfterAxial fan
77
SaugbandSuction belt
88th
Wellewave
99
SpannrolleIdler pulley
1010th
FördertischflächeConveyor table area
1111
VordermarkenFront brands
1212th
FörderrichtungDirection of conveyance
1313
BlaseinrichtungBlowing device
1414
SaugöffnungSuction opening
1515
AnlageblechSheet
1616
Bogenbow
1717th
Bogenbow
1818th
Bogenbow
1919th
Öffnungopening
2020th
mikroporöse Strukturmicroporous structure
2121
GrundkörperBasic body
2222
DruckluftzuführungCompressed air supply
2323
BelüftungsöffnungVentilation opening
αα
Winkelangle

Claims (10)

Verfahren zum unterschuppten Zuführen von bogenförmigen Bedruckstoffen an eine Druckmaschine unter Verwendung eines Fördertisches,
dadurch gekennzeichnet,
daS entgegen der Förderrichtung (12) des über den Fördertisch (1) zugeführten Bedruckstoffes unter den Schuppenstrom kontinuierlich Druckluft strömt.
Process for the shingled feeding of sheet-shaped printing materials to a printing press using a conveyor table,
characterized by
that against the conveying direction (12) of the printing material fed via the conveying table (1), compressed air flows continuously under the stream of shingles.
Verfahren nach Anspruch 1,
dadurch gekennzeichnet,
daß die kontinuierliche Druckluft durch eine laminare oder eine Kombination von laminarer und turbulenter Strömung gebildet ist.
Method according to claim 1,
characterized by
that the continuous compressed air is formed by a laminar or a combination of laminar and turbulent flow.
Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1 und 2,
dadurch gekennzeichnet,
daß mindestens eine mit einer Druckluftzuführung (22) gekoppelte Blaseinrichtung (13) in dem einer Druckeinheit (2) zugewandten Bereich des Fördertisches (1), annähernd in dessen Ebene, angeordnet ist, deren luftdurchlässige Fläche aus einer Vielzahl von Öffnungen aufgrund einer mikroporösen Struktur (20) sowie mindestens einer benachbarten, wesentlich größeren und entgegen der Förderrichtung (12) gerichteten Öffnung (19) gebildet ist.
Device for carrying out the method according to claims 1 and 2,
characterized by
that at least one blowing device (13) coupled to a compressed air supply (22) is arranged in the area of the conveyor table (1) facing a printing unit (2), approximately in its plane, the air-permeable surface of which consists of a plurality of openings due to a microporous structure ( 20) and at least one adjacent, substantially larger opening (19) directed counter to the conveying direction (12).
Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet,
daß die Öffnung (19) in die luftdurchlässige Fläche der mikroporösen Struktur (20) der Blaseinrichtung (13) integriert ist.
Device according to claim 3,
characterized by
that the opening (19) in the air-permeable surface of the microporous structure (20) of the blowing device (13) is integrated.
Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet,
daß einer Öffnung (19) mindestens eine separate, benachbarte mikroporöse Struktur (20) zugeordnet ist und beide gemeinsam mit der Druckluftleitung (22) gekoppelt sind.
Device according to claim 3,
characterized by
that an opening (19) is assigned at least one separate, adjacent microporous structure (20) and both are coupled together with the compressed air line (22).
Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet,.
daß der Fördertisch (1) Saugöffnungen und um diesen umlaufende, gelochte Saugbänder (7) aufweist.
Device according to claim 3,
characterized by .
that the conveyor table (1) has suction openings and perforated suction belts (7) running around it.
Vorrichtung nach Anspruch 3 und 6,
dadurch gekennzeichnet,
daß mehrere Blaseinrichtungen (13) einreihig oder mehrreihig, quer zur Förderrichtung (12) auf dem Fördertisch (1) zwischen den Saugbändern (7) im Bereich des Schuppenstromes zwischen dem ersten bis dritten Bogen (16 bis 18) angeordnet sind.
Apparatus according to claim 3 and 6,
characterized by
that several blowing devices (13) in one or more rows are arranged transversely to the conveying direction (12) on the conveying table (1) between the suction belts (7) in the area of the scale flow between the first to third sheets (16 to 18).
Vorrichtung nach den Ansprüchen 3 bis 5,
dadurch gekennzeichnet,
daß die Öffnung (19) in einem spitzen Winkel α zur Fördertischfläche (10) entgegen der Förderrichtung (12) gerichtet ist.
Device according to claims 3 to 5,
characterized by
that the opening (19) is directed at an acute angle α to the conveyor table surface (10) against the conveying direction (12).
Vorrichtung nach Anspruch 8,
dadurch gekennzeichnet,
daS die Öffnung (19) als Schlitz in einem spitzen Winkel α zur Fördertischfläche (10) ausgebildet ist.
Device according to claim 8,
characterized by
that the opening (19) is designed as a slot at an acute angle α to the conveyor table surface (10).
Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1 und 2,
dadurch gekennzeichnet,
daß im Bereich der Ausrichteeinheit (4) mindestens eine mit einer Druckluftzuführung (22) gekoppelte Blaseinrichtung (13) angeordnet ist, deren luftdurchlässige Fläche aus einer Vielzahl von Öffnungen aufgrund einer mikroporösen Struktur (20) sowie mindestens einer benachbarten, wesentlich größeren und entgegen der Förderrichtung (12) gerichteten Öffnung (19) gebildet ist.
Device for carrying out the method according to claims 1 and 2,
characterized by
that at least one blowing device (13) coupled to a compressed air supply (22) is arranged in the area of the alignment unit (4), the air-permeable surface of which consists of a plurality of openings due to a microporous structure (20) and at least one adjacent, substantially larger and counter to the conveying direction (12) directed opening (19) is formed.
EP95104530A 1994-04-15 1995-03-28 Method and device for underlapped feeding of sheet-like material to a printing machine Expired - Lifetime EP0677466B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4413089A DE4413089C2 (en) 1994-04-15 1994-04-15 Method and device for the shingled feeding of sheet-shaped printing materials to a printing machine
DE4413089 1994-04-15

Publications (2)

Publication Number Publication Date
EP0677466A1 true EP0677466A1 (en) 1995-10-18
EP0677466B1 EP0677466B1 (en) 1996-09-04

Family

ID=6515526

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95104530A Expired - Lifetime EP0677466B1 (en) 1994-04-15 1995-03-28 Method and device for underlapped feeding of sheet-like material to a printing machine

Country Status (5)

Country Link
US (1) US5636833A (en)
EP (1) EP0677466B1 (en)
JP (1) JP2553324B2 (en)
DE (2) DE4413089C2 (en)
DK (1) DK0677466T3 (en)

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Also Published As

Publication number Publication date
JP2553324B2 (en) 1996-11-13
JPH07285703A (en) 1995-10-31
EP0677466B1 (en) 1996-09-04
US5636833A (en) 1997-06-10
DE4413089A1 (en) 1995-10-19
DK0677466T3 (en) 1997-02-24
DE4413089C2 (en) 1997-02-13
DE59500015D1 (en) 1996-10-10

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