EP0662439B1 - Pneumatic sheet guiding device - Google Patents
Pneumatic sheet guiding device Download PDFInfo
- Publication number
- EP0662439B1 EP0662439B1 EP94118917A EP94118917A EP0662439B1 EP 0662439 B1 EP0662439 B1 EP 0662439B1 EP 94118917 A EP94118917 A EP 94118917A EP 94118917 A EP94118917 A EP 94118917A EP 0662439 B1 EP0662439 B1 EP 0662439B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- guiding device
- feeding device
- air
- sheet feeding
- 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
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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
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
- B65H29/245—Air blast devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/176—Cardboard
-
- 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 pneumatic sheet guiding device in sheet-fed rotary printing presses to support sheet feeding according to the preamble of the first claim.
- the document EP 0156173 shows a device on multicolor printing machines for guiding sheets printed on one or both sides between the printing units or a printing unit and the feeder.
- This device (see Fig. 2) is designed as a box. Holes are made in the top plate of the box, from which air is blown or sucked. Fans are provided in the box to generate the excess and / or negative pressure.
- the blow box is adapted to the respective arch path.
- the support of the sheet conveyance by means of fan-generated air flow, which enters or exits from holes, is only an example. It is known, for example, to connect such a sheet guiding device centrally to an air supply device or to provide another form of incorporating the openings into the top plate.
- the box shape is necessary because it fulfills the function of a pre-pressure container.
- a disadvantage of these pneumatic suction or blow boxes is that they are adapted to the respective location in use. They are stable and therefore cannot be moved along the arch path - if the arch path is different. It is also not possible to give the guiding device a different shape by swiveling it into a different working position.
- DE-OS 3113750 shows a sheet delivery for rotary printing presses, in which guide bow blowers are arranged upstream of the sheet brake to support the sheet conveyance in the ascending chain center.
- Flexible guide bands or guide cloths are provided between the bow brake and the guide bow blower, which are articulated on the bow brake and fill the space between the bow brake and guide bow blower when the bow brake is displaced.
- a disadvantage of these belts or cloths is that they do not work with external air, so that exact support of the sheet conveyance, including safe feeding of the sheet to the sheet brake, is not possible.
- DE-PS 2128216 shows a guide device that has to be changed when the mode of operation is changed.
- This document discloses a device for transferring and using sheets in printing presses for optional face or back printing, in which a sheet transfer drum together with the impression cylinder is used Show sheet turning station. Both under the impression cylinder and under the sheet transfer drum are a sheet guide plate at a short distance from the drum or cylinder circumference provided stationary, which are connected to each other via an adjustable third or middle sheet guide plate. The last-mentioned sheet guide plate can be converted into a face printing and a face and back printing position.
- all three sheet guide plates form a closed guide which, tangentially starting from the circumference of the impression cylinder, opens into an equidistant balm that runs close to the circumference of the sheet transfer drum.
- the middle sheet is pivoted as a coupling of a pushing loop into the gap between the printing cylinder and sheet transfer drum, so that it extends tangentially to it at a short distance from the circumference of the sheet transfer drum.
- the sheet guide plate remains in its extended position; an adaptation to the sheet conveying path is not possible.
- the sheet guide device can be adjusted to any curvature along the sheet path. This allows a displacement along the arc path and a pivoting of the sheet guide device with a different curvature.
- the upper part and the lower part are designed in their flexibility so that if the steel sheet is bent as a result Adapting to the sheet conveying path, the neutral fiber - a fiber layer whose original length does not change or changes only insignificantly - lies in the upper part.
- the flexibility of the lower part is much greater than the flexibility of the upper part.
- the flexibility of the lower part is so great that when the guide device is acted upon by blown air, the lower part expands and an airbag is formed.
- the sheet guiding device is simple in construction and can be produced with little resources. It is easily possible to bring the sheet guiding device out of the stretched position into a curved shape and vice versa.
- FIG. 1 shows the sheet guiding device on a sheet delivery 7 of a sheet-fed rotary printing machine. From the sheet delivery 7, the chain circle 1 with the gripper carriage 2, the deflection wheels 3 and the sheet stack 4 are shown. The stops 11 are arranged on the sheet stack 4.
- a sheet brake 5 is provided in front of the sheet stack 4.
- Sheet guiding devices are arranged on the sheet delivery 7.
- a sheet guiding device is shown in the ascending part of the chain circle 1 in front of the sheet stack 4.
- This sheet guiding device is fixedly connected to the suction roll 5 and displaceable with it via a holder 8.
- the sheet guiding device is mounted in slide guides 9.
- the slide guides 9 are arranged on both sides of the sheet delivery 7.
- the sheet guiding device is connected to an air generator (not shown) via a connecting piece 10..
- Another sheet guide device is provided below the lower deflection wheel 3.1, which is arranged downstream of the printing cylinder 12.
- the position when processing paper is shown as a full line.
- the position when processing material with higher stiffness (cardboard) is shown in dashed lines (only partially shown).
- the sheet guiding device is connected to a working cylinder 14 via an angle lever 13. By means of the working cylinder 14, the sheet guiding device is pivoted wildly into the two positions and positioned in the respective position. In the position for paper processing, the sheet guiding device is located near the sheet conveying path; the sheet guide device is folded down for cardboard processing.
- Fig. 2 shows the sheet guiding device under a reversing drum 15 of a sheet-fed rotary printing press which can be converted from straight printing to perfecting and vice versa.
- the upstream and downstream printing cylinders 18, 19 are also shown.
- the sheet guiding device In the straight printing position, the sheet guiding device is adapted to the sheet path (full line). The sheet guiding device is folded down in the perfecting position. In this extended position, it fills the space between a first and a second fixed guide element 16, 17.
- FIG. 3 shows the detailed structure of the pneumatic sheet guiding device in a partially perspective illustration as a detail marked with X in FIG. 1.
- the sheet guiding device consists of an upper part 20, which is designed as a nozzle plate 20, is flexible (bendable) and consists, for example, of sheet steel. Openings 21 are incorporated into the upper part, which are formed as a bead in the exemplary embodiment. However, any other shape, such as bores and any other arrangement of the openings 21, is also conceivable.
- the upper plate 20 is firmly connected to a lower part 22 at the edge surfaces, which consists of an equally flexible material, for example rubber. However, it is also conceivable to use a film or textile material as the lower part.
- the upper part 20 and lower part 22 are connected by means of rivets 23, which are arranged by holding plates 24.
- the holding plates 24 act against the lower part 22.
- the connection of the upper and lower parts 20, 22 at the edge surfaces must be so, regardless of how the connection is made, that no air can escape between the upper and lower parts 20, 22.
- the upper and lower parts 20, 22 are designed such that the lower part 22 is considerably more flexible than the upper part 20.
- the sheet guiding device If the sheet guiding device is not required, or in the idle state of the sheet-fed rotary printing press, if no air is supplied via the connecting piece 10 ⁇ , the lower part 22 lies against the upper part 20 ⁇ .
Description
Die Erfindung betrifft eine pneumatische Bogenleiteinrichtung in Bogenrotationsdruckmaschinen zur Unterstützung der Bogenförderung gemäß Oberbegriff des 1. Patentanspruches.The invention relates to a pneumatic sheet guiding device in sheet-fed rotary printing presses to support sheet feeding according to the preamble of the first claim.
Derartige Bogenleiteinrichtungen sind bekannt. So ist beispielsweise der Druckschrift EP 0156173 eine Vorrichtung an Mehrfarbendruckmaschinen zum Führen von ein- oder beidseitig bedruckter Bogen zwischen den Druckwerken bzw. einem Druckwerk und dem Augleger entnehmbar. Diese Vorrichtung (siehe Fig. 2) ist als Kasten ausgebildet. Im Überblech des Kastens sind Bohrungen eingebracht, aus denen Luft geblasen oder gesaugt wird. Zur Erzeugung des Über- und/oder Unterdrucks sind im Kasten Lüfter vorgesehen. Der Blaskasten ist dem jeweiligen Bogenweg angepaßt.Such sheet guiding devices are known. For example, the document EP 0156173 shows a device on multicolor printing machines for guiding sheets printed on one or both sides between the printing units or a printing unit and the feeder. This device (see Fig. 2) is designed as a box. Holes are made in the top plate of the box, from which air is blown or sucked. Fans are provided in the box to generate the excess and / or negative pressure. The blow box is adapted to the respective arch path.
Bei der Unterstützung der Bogenförderung durch mittels Lüfter erzeugter Luftströmung, die aus Bohrungen ein- bzw. austritt, handelt es sieh nur um ein Beispiel. Es ist beispielsweise bekannt, eine derartige Bogenleiteinrichtung zentral an eine Luftversorgungseinrichtung anzuschließen oder eine andere Form der Einarbeitung der Öffnungen ins Oberblech vorzusehen.The support of the sheet conveyance by means of fan-generated air flow, which enters or exits from holes, is only an example. It is known, for example, to connect such a sheet guiding device centrally to an air supply device or to provide another form of incorporating the openings into the top plate.
Die Kastenform ist notwendig, da sie die Funktion eines Vordruckbehälters erfüllt.The box shape is necessary because it fulfills the function of a pre-pressure container.
Nachteilig an diesen pneumatischen Saug- bzw. Blaskästen ist, daß sie einsatzmäßig dem jeweiligen Ort angepaßt sind. Sie sind stabil ausgeführt und können deshalb nicht längs des Bogenweges - bei anderer Krümmung des Bogenweges - verschoben werden. Es ist auch nicht möglich, durch Schwenken in eine andere Arbeitsstellung der Leiteinrichtung eine andere Form zu geben.A disadvantage of these pneumatic suction or blow boxes is that they are adapted to the respective location in use. They are stable and therefore cannot be moved along the arch path - if the arch path is different. It is also not possible to give the guiding device a different shape by swiveling it into a different working position.
Es ist weiterhin bekannt, daß in Abhängigkeit vom zu verarbeitenden Format Verstellungen z.B. an der Bogenbremse am Auslegerstapel vorgenommen werden müssen. Dies kann auch bei Leitelementen in Druckmaschinen, die wahlweise im Schöndruck oder im Schön- und Widerdruck betrieben werden, notwendig werden.It is also known that, depending on the format to be processed, adjustments e.g. must be carried out on the sheet brake on the delivery stack. This can also be necessary for guide elements in printing presses, which are operated either in straight printing or in face and reverse printing.
So zeigt beispielsweise die DE-OS 3113750 einen Bogenausleger für Rotationsdruckmaschinen, bei dem der Bogenbremse Leitbügelbläser zur Unterstützung der Bogenförderung im aufsteigenden Kettentrum vorgeordnet sind. Zwischen der Bogenbremse und dem Leitbügelbläser sind flexible Führungsbänder oder Führungstücher vorgesehen, die an der Bogenbremse angelenkt sind und bei Verschiebung der Bogenbremse den Freiraum zwischen Bogenbremse und Leitbügelbläser ausfüllen.For example, DE-OS 3113750 shows a sheet delivery for rotary printing presses, in which guide bow blowers are arranged upstream of the sheet brake to support the sheet conveyance in the ascending chain center. Flexible guide bands or guide cloths are provided between the bow brake and the guide bow blower, which are articulated on the bow brake and fill the space between the bow brake and guide bow blower when the bow brake is displaced.
Nachteilig an diesen Bändern oder Tüchern ist, daß sie nicht mit Fremdluft arbeiten, so daß eine exakte Unterstützung der Bogenförderung einschl. sicherer Zuführung des Bogens zur Bogenbremse nicht möglich ist.A disadvantage of these belts or cloths is that they do not work with external air, so that exact support of the sheet conveyance, including safe feeding of the sheet to the sheet brake, is not possible.
Es ist weiterhin bekannt, Leiteinrichtungen in Abhängigkeit vom zu verarbeitenden Flächengewicht und/oder bei Betriebsartumstellung von Schöndruck auf Schön- und Widerdruck und umgekehrt zu verstellen.
Eine Leiteinrichtung, die bei Betriebsartwechsel umgestellt werden muß, zeigt die DE-PS 2128216. Durch diese Druckschrift ist eine Vorrichtung zur Bogenübergabe und -wendung in Druckmaschinen für wahlweise Schön- oder Schön- und Widerdruck bekannt, bei der eine Bogenübergabetrommel zusammen mit dem Druckzylinder eine Bogenwendestation darstellen. Sowohl unter dem Druckzylinder als auch unter der Bogenübergabetrommel sind je ein Bogenleitblech in geringem Abstand vom Trommel- bzw. Zylinderumfang stationär vorgesehen, die über ein verstellbares drittes bzw mittleres Bogenleitblech miteinander verbunden sind. Das letztgenannte Bogenleitblech ist in eine Schöndruck- und in eine Schön- und Widerdruckstellung umstellbar.
In der Schön- und Widerdruckstellung bilden alle drei Bogenleitbleche eine geschlossene Führung, die in geringem Abstand tangential vom Druckzylinderumfang ausgehend in eine nahe des Umfange der Bogenübergabetrommel verlaufende äquidistante Balm einmündet. Bei Schöndruck wird das mittlere Bogenblech als Koppel einer Schubschleife in den Spalt zwischen Druckzylinder und Bogenübergabetrommel geschwenkt, so daß es sich im geringen Abstand vom Umfang der Bogenübergabetrommel tangential dazu erstreckt.
In beiden Stellungen verbleibt das Bogenleitblech in seiner Strecklage; eine Anpassung an den Bogenförderweg ist nicht möglich.It is also known to adjust control devices as a function of the basis weight to be processed and / or when changing the operating mode from straight printing to perfecting and vice versa.
DE-PS 2128216 shows a guide device that has to be changed when the mode of operation is changed. This document discloses a device for transferring and using sheets in printing presses for optional face or back printing, in which a sheet transfer drum together with the impression cylinder is used Show sheet turning station. Both under the impression cylinder and under the sheet transfer drum are a sheet guide plate at a short distance from the drum or cylinder circumference provided stationary, which are connected to each other via an adjustable third or middle sheet guide plate. The last-mentioned sheet guide plate can be converted into a face printing and a face and back printing position.
In the perfecting position, all three sheet guide plates form a closed guide which, tangentially starting from the circumference of the impression cylinder, opens into an equidistant balm that runs close to the circumference of the sheet transfer drum. In straight printing, the middle sheet is pivoted as a coupling of a pushing loop into the gap between the printing cylinder and sheet transfer drum, so that it extends tangentially to it at a short distance from the circumference of the sheet transfer drum.
In both positions, the sheet guide plate remains in its extended position; an adaptation to the sheet conveying path is not possible.
Ausgehend von den Nachteilen aus dem Stand der Technik ist es Aufgabe der Erfindung, eine pneumatische Bogenleiteinrichtung zu schaffen, die auf unterschiedliche Krümmungen längs des Bogenweges anpaßbar ist.Based on the disadvantages of the prior art, it is an object of the invention to provide a pneumatic sheet guide device which can be adapted to different curvatures along the sheet path.
Erfindungsgemäß wird diese Aufgabe durch die Merkmale des 1. Anspruchs gelöst.According to the invention, this object is achieved by the features of claim 1.
Da das Oberteil biegbar (Stahlblech) und das Unterteil elastisch d.h. dehnbar (Elastomer, Folie oder textiles Materials) ist, ist die Bogenleiteinrichtung auf jede Krümmung längs des Bogenweges einstellbar. Damit ist eine Verschiebung längs des Bogenweges sowie ein Verschwenken der Bogenleiteinrichtung bei anderer Krümmung möglich.Since the upper part is bendable (sheet steel) and the lower part is elastic i.e. is stretchable (elastomer, film or textile material), the sheet guide device can be adjusted to any curvature along the sheet path. This allows a displacement along the arc path and a pivoting of the sheet guide device with a different curvature.
Das Oberteil und das Unterteil sind in ihrer Flexibilität so ausgelegt, daß bei einer Biegung des Stahlbleches infolge Anpassung an den Bogenförderweg die neutrale Faser - eine Faserschicht, deren ursprüngliche Länge sich nicht bzw. nur unwesentlich ändert - im Oberteil liegt.The upper part and the lower part are designed in their flexibility so that if the steel sheet is bent as a result Adapting to the sheet conveying path, the neutral fiber - a fiber layer whose original length does not change or changes only insignificantly - lies in the upper part.
Die Flexibilität des Unterteiles ist wesentlich größer als die Flexibilität des Oberteiles. Die Flexibilität des Unterteiles ist so groß, daß sich bei Beaufschlagung der Leiteinrichtung mit Blasluft das Unterteil dehnt und sich ein Luftsack bildet.The flexibility of the lower part is much greater than the flexibility of the upper part. The flexibility of the lower part is so great that when the guide device is acted upon by blown air, the lower part expands and an airbag is formed.
Die Bogenleiteinrichtung ist einfach im Aufbau und kann mit geringen Mitteln hergestellt werden. Es ist ohne weiteres möglich, die Bogenleiteinrichtung aus der Strecklage in eine gekrümmte Form und umgekehrt zu bringen.The sheet guiding device is simple in construction and can be produced with little resources. It is easily possible to bring the sheet guiding device out of the stretched position into a curved shape and vice versa.
Anhand eines Ausführungsbeispieles soll nachfolgend die Erfindung näher beschrieben werden. In den Zeichnungen zeigen:
- Fig. 1:
- Bogenleiteinrichtung an einer Bogenauslageeinrichtung einer Bogenrotationsdruckmaschine
- Fig. 2:
- Bogenleiteinrichtung unter einer Wendetrommel in Schöndruck- und in Schön- und Widerdruckmaschinen
- Fig. 3:
- Bogenleiteinrichtung im Detail
- Fig. 1:
- Sheet guiding device on a sheet delivery device of a sheet-fed rotary printing machine
- Fig. 2:
- Sheet guiding device under a reversing drum in face printing and face and reverse printing machines
- Fig. 3:
- Sheet guide device in detail
Fig. 1 zeigt die Bogenleiteinrichtung an einer Bogenauslage 7 einer Bogenrotationsdruckmaschine. Von der Bogenauslage 7 sind der Kettenkreis 1 mit den Greiferwagen 2, die Umlenkräder 3 sowie der Bogenstapel 4 dargestellt. Am Bogenstapel 4 sind die Anschläge 11 angeordnet. Eine Bogenbremse 5 ist vor dem Bogenstapel 4 vorgesehen. Die gestrichelt gezeichnete Bogenbremse 5, die als Saugwalze 5 ausgebildet ist, zeigt ihre Stellung bei Verarbeitung eines kleinformatigen Bogens 6.1 shows the sheet guiding device on a
An der Bogenauslage 7 sind Bogenleiteinrichtungen angeordnet. Eine Bogenleiteinrichtung ist im aufsteigenden Teil des Kettenkreises 1 vor dem Bogenstapel 4 dargestellt. Diese Bogenleiteinrichtung ist über einen Halter 8 fest mit der Saugwalze 5 und mit dieser verschiebbar, verbunden. Die Bogenleiteinrichtung ist in Gleitführungen 9 gelagert. Die Gleitführungen 9 sind beidseitig seitlich an der Bogenauslage 7 angeordnet. Zur Versorgung mit Blasluft ist die Bogenleiteinrichtung über einen Anschlußstutzen 10̸ mit einem nicht dargestellten Lufterzeuger verbunden.Sheet guiding devices are arranged on the
Eine weitere Bogenleiteinrichtung ist unterhalb des unteren Umlenkrades 3.1, das dem Druckzylinder 12 nachgeordnet ist, vorgesehen. Dargestellt als Vollinie ist die Stellung bei Verarbeitung von Papier. Die Stellung bei Verarbeitung von Material höherer Steifigkeit (Karton) ist gestrichelt gezeichnet (nur teilweise eingezeichnet).Another sheet guide device is provided below the lower deflection wheel 3.1, which is arranged downstream of the
Die Bogenleiteinrichtung ist über einen Winkelhebel 13 mit einem Arbeitszylinder 14 verbunden. Mittels des Arbeitszylinders 14 wild die Bogenleiteinrichtung in die beiden Stellungen geschwenkt und in der jeweiligen Stellung positioniert. In der Stellung für Papierverarbeitung liegt die Bogenleiteinrichtung in Nähe des Bogenförderweges; für die Kartonverarbeitung ist die Bogenleiteinrichtung abgeklappt.The sheet guiding device is connected to a working
Fig. 2 zeigt die Bogenleiteinrichtung unter einer Wendetrommel 15 einer von Schöndruck auf Schön- und Widerdruck und umgekehrt umstellbaren Bogenrotationsdruckmaschine. Dargestellt sind auch der vor- und nachgeordnete Druckzylinder 18,19.Fig. 2 shows the sheet guiding device under a reversing
In der Schöndruckstellung ist die Bogenleiteinrichtung dem Bogenweg angepaßt (Vollinie). In der Schön- und Widerdruckstellung ist die Bogenleiteinrichtung abgeklappt. Sie füllt in Strecklage in dieser Stellung den Raum zwischen einem ersten und zweiten festen Leitelement 16,17 aus.In the straight printing position, the sheet guiding device is adapted to the sheet path (full line). The sheet guiding device is folded down in the perfecting position. In this extended position, it fills the space between a first and a second
Fig. 3 zeigt den detaillierten Aufbau der pneumatischen Bogenleiteinrichtung in teilweise perspektivischer Darstellung als Einzelheit gekennzeichnet mit X in Fig. 1.FIG. 3 shows the detailed structure of the pneumatic sheet guiding device in a partially perspective illustration as a detail marked with X in FIG. 1.
Die Bogenleiteinrichtung besteht aus einem Oberteil 20, das als Düsenblech 20 gestaltet ist, flexibel (biegbar) ist und beispielsweise aus Stahlblech besteht. In das Oberteil sind Öffnungen 21 eingearbeitet, die im Ausführungsbeispiel als Sicke ausgebildet sind. Es ist jedoch auch jede andere Form, wie beispielsweise Bohrungen und jede andere Anordnung der Öffnungen 21 denkbar.The sheet guiding device consists of an
Das Oberblech 20 ist an den Randflächen fest mit einem Unterteil 22 verbunden, das aus einem gleichermaßen flexiblen Material, beispielsweise Gummi besteht. Es ist jedoch auch denkbar, als Unterteil eine Folie oder textiles Material zu verwenden.The
Die Verbindung von Oberteil 20 und Unterteil 22 erfolgt mittels Nieten 23, die durch Halteplättchen 24 angeordnet sind. Die Halteplättchen 24 wirken gegen das Unterteil 22. Die Verbindung von Ober- und Unterteil 20, 22 an den Randflächen muß so sein, unabhängig davon, wie die Verbindung erfolgt, daß keine Luft zwischen Ober- und Unterteil 20,22 entweichen kann. Ober- und Unterteil 20,22 sind derart ausgelegt, daß das Unterteil 22 wesentlich flexibler ist als das Oberteil 20.The
Die Wirkungsweise und die Funktion der Bogenleiteinrichtung ist folgende:The operation and function of the sheet guiding device is as follows:
Wird die Bogenleiteinrichtung nicht benötigt, oder im Ruhezustand der Bogenrotationsdruckmaschine, wenn über den Anschlußstutzen 10̸ keine Luft zugeführt wird, liegt das Unterteil 22 schlaff am Oberteil 20̸ an.If the sheet guiding device is not required, or in the idle state of the sheet-fed rotary printing press, if no air is supplied via the connecting piece 10̸, the
Im Betriebszustand, wenn über den Anschlußstutzen 10 die Bogenleiteinrichtung pneumatisch mit Luft beaufschlagt wird, dehnt sich das Unterteil 22 aus, es entsteht ein Luftsack 25, der einen Vordruckbehälter bildet. Aus den Öffnungen 21 tritt Luft (sh. Pfeil, Fig 3) aus, die auf den Bogen 6 wirkt und die Bogenförderung unterstützt.In the operating state, when the sheet guiding device is pneumatically pressurized with air via the connecting
- 11
- KettenkreisChain circle
- 22nd
- GreiferwagenGrab car
- 33rd
- UmlenkradDeflection wheel
- 3.13.1
- unteres Umlenkradlower deflection wheel
- 44th
- BogenstapelSheet stack
- 55
- Bogenbremse, SaugwalzeBow brake, suction roller
- 66
- Bogenbow
- 77
- BogenauslageSheet delivery
- 88th
- Halterholder
- 99
- GleitführungSliding guide
- 1010th
- AnschlußstutzenConnecting piece
- 1111
- Anschlagattack
- 1212th
- DruckzylinderImpression cylinder
- 1313
- WinkelhebelAngle lever
- 1414
- ArbeitszylinderWorking cylinder
- 1515
- WendetrommelTurning drum
- 1616
- erstes Leitelementfirst guiding element
- 1717th
- zweites Leitelementsecond guide element
- 1818th
- vorgeordneter Druckzylinderupstream pressure cylinder
- 1919th
- nachgeordneter Druckzylinderdownstream pressure cylinder
- 2020th
- Düsenblech, OberteilNozzle plate, upper part
- 2121
- Öffnungenopenings
- 2222
- UnterteilLower part
- 2323
- Nieterivet
- 2424th
- HalteplättchenHolding plate
- 2525th
- LuftsackAirbag
Claims (5)
- Pneumatic sheet feeding device along a sheet path in sheet-fed letterpress rotaries to assist the transport of sheets, comprising an upper part with openings to discharge the blown air and a lower part, the upper and lower parts being firmly connected to one another peripherally such that they are impermeable to air and form a cavity, characterized in that- the upper part (20) and the lower part (22) are composed of a flexible material, the lower part (22) being considerably more flexible than the upper part (20),- the upper part (20) is bendable and the lower part (22) is extensible and- when blown, air is admitted to the cavity, an air pocket (25) is formed.
- Pneumatic sheet feeding device in accordance with claim 1, characterized in that the upper part (20) is composed of sheet steel.
- Pneumatic sheet feeding device in accordance with claims 1 and 2, characterized in that, on adjusting the sheet feeding device, the neutral fibre rests on the sheet path in the upper part (20).
- Pneumatic sheet feeding device in accordance with claim 1, characterized in that the lower part (22) consists of an elastomer, a film or a textile material.
- Pneumatic sheet feeding device in accordance with claim 1, characterized in that the upper part (20) and the lower part (22) are connected to one another by means of rivets (23) and small retaining plates (24).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4344040 | 1993-12-23 | ||
| DE4344040A DE4344040C1 (en) | 1993-12-23 | 1993-12-23 | Pneumatic sheet-directing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0662439A1 EP0662439A1 (en) | 1995-07-12 |
| EP0662439B1 true EP0662439B1 (en) | 1997-03-19 |
Family
ID=6505905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94118917A Expired - Lifetime EP0662439B1 (en) | 1993-12-23 | 1994-12-01 | Pneumatic sheet guiding device |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0662439B1 (en) |
| DE (2) | DE4344040C1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6145649A (en) * | 1998-03-13 | 2000-11-14 | Heidelberger Druckmaschinen Ag | Device for flexible guiding of conveyed products |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3625582B2 (en) * | 1995-07-27 | 2005-03-02 | ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト | Sheet braking method and apparatus in sheet discharge device of sheet-fed rotary printing press |
| DE19631598C2 (en) * | 1996-08-05 | 2000-02-17 | Roland Man Druckmasch | Pneumatic sheet guiding device in a printing press |
| DE19739893C2 (en) * | 1997-09-11 | 2002-04-11 | Koenig & Bauer Ag | Device for guiding and feeding sheets to a suction roll in delivery of printing machines |
| DE19838975C2 (en) * | 1998-08-27 | 2002-05-08 | Roland Man Druckmasch | Pneumatic sheet guiding device in a printing press |
| DE19952205C1 (en) * | 1999-10-29 | 2000-12-14 | Roland Man Druckmasch | Adjustable sheet feed for printing machine uses pneumatic flow channel with pivoted upper part below sheet feed path adjusted to match sheet characteristics |
| DE102007003884A1 (en) * | 2007-01-26 | 2008-07-31 | Koenig & Bauer Aktiengesellschaft | Sample sheet and maculature sheet delivering device for use in printing machine, has sheet brake that is movable in conveying direction during conveying of sheet to delivery of sample sheet and maculature sheet |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2128216C3 (en) * | 1970-07-20 | 1976-09-30 | Polygraph Leipzig | Device for sheet transfer and turning in printing machines for either face or face and reverse printing |
| DE3113750A1 (en) * | 1981-04-04 | 1982-10-14 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | "BOW BOOM FOR ROTARY PRINTING MACHINES WITH GRIPPER BRIDGES CIRCULATING ON ENDLESS CHAINS" |
| DE3411029A1 (en) * | 1984-03-24 | 1985-10-03 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | DEVICE FOR GUIDING SHEETS PRINTED ON SIDE AND BOTH SIDES |
-
1993
- 1993-12-23 DE DE4344040A patent/DE4344040C1/en not_active Expired - Fee Related
-
1994
- 1994-12-01 DE DE59402145T patent/DE59402145D1/en not_active Expired - Lifetime
- 1994-12-01 EP EP94118917A patent/EP0662439B1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6145649A (en) * | 1998-03-13 | 2000-11-14 | Heidelberger Druckmaschinen Ag | Device for flexible guiding of conveyed products |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59402145D1 (en) | 1997-04-24 |
| DE4344040C1 (en) | 1995-03-23 |
| EP0662439A1 (en) | 1995-07-12 |
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