EP0118860B1 - Device for attaching a web to the hook of a web threading device - Google Patents

Device for attaching a web to the hook of a web threading device Download PDF

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Publication number
EP0118860B1
EP0118860B1 EP84102323A EP84102323A EP0118860B1 EP 0118860 B1 EP0118860 B1 EP 0118860B1 EP 84102323 A EP84102323 A EP 84102323A EP 84102323 A EP84102323 A EP 84102323A EP 0118860 B1 EP0118860 B1 EP 0118860B1
Authority
EP
European Patent Office
Prior art keywords
web
cover
cover pieces
material web
cover piece
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
Application number
EP84102323A
Other languages
German (de)
French (fr)
Other versions
EP0118860A2 (en
EP0118860A3 (en
Inventor
Klaus Theilacker
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 EP0118860A2 publication Critical patent/EP0118860A2/en
Publication of EP0118860A3 publication Critical patent/EP0118860A3/en
Application granted granted Critical
Publication of EP0118860B1 publication Critical patent/EP0118860B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B41F13/03—Threading webs into printing machines

Definitions

  • the invention relates to a device for fastening a web of material to the driver of a web feeding device of a web-fed rotary printing press.
  • Web infeed devices for web-fed rotary printing machines generally comprise guides which run laterally alongside a longitudinal edge of the web along the intended feed path and in which a feed element can be moved.
  • a driver is attached to the feed element and extends in the direction of the material web.
  • the adhesive tapes must be attached to the free-hanging end of the material web in the space between the supply roll and the rollers of the machine into which the material web is to be drawn. This work is time consuming. It further leads light in case of improper execution to a loosening of the adhesive tape while at Einziehvor g g or to the formation of folds in the sheet of material, at which then the web may tear when pulling-in operation.
  • the invention has for its object to provide a device that simplifies the connection of the material web with the driver and reduces the risk of disruptions due to web breaks during the pulling process.
  • this object is achieved by applying the measures specified in the characterizing part of claim 1.
  • BE-A-579 034 It is known from BE-A-579 034 to place a band around a side edge of the web for introducing a web of moist cellulose into a dryer in which the web is pneumatically guided. Springs are arranged in the band, which clamp the band to the web.
  • Such a device is unsuitable for pulling a material web to be printed into a printing press.
  • the springs ensuring sufficient pressure are too thick to fit through the usual narrow gap between two cylinders of a printing unit that are parked apart. Nor can the required tensile forces be exerted on a band encompassing only one side edge without the risk of the web tearing.
  • the known web retraction device comprises a retraction element 1, for example a chain or a rope, to which a driver 2 is fastened.
  • the feed element 1 is arranged laterally next to a paper web 3 which is to be drawn into a processing machine, for example a printing machine, by means of the feed device.
  • cover pieces 4, 5 are provided, between which the front end of the material web 3 is fixed.
  • the cover 4 is designed as a plastic film, in which particles of permanent magnetic material are embedded. The particles are embedded in the film in such a way that all poles are oriented towards one side surface of the cover piece 4, specifically to the side surface that is placed on the material web 3.
  • the other cover piece 5 is designed as a flexible metal foil made of a magnetizable material, such as soft iron.
  • the width of the cover pieces 4, 5 at the trailing edges 8, 9 is expediently dimensioned equal to the width of the material web to be drawn in.
  • the outer side edges 10, 11 run obliquely in the direction of the driver 2.
  • Both cover pieces are connected to one another via a back strip 6 made of flexible material.
  • a loop 7 is permanently attached to the driver 2 for hanging.
  • the back strip 6 can also be omitted. Then one end of the loop 7 is expediently attached to a cover piece 4, 5.
  • cover pieces 4 and 5 are folded over the front end of the material web 3.
  • the piece of paper web 3 protruding beyond cover pieces 4 and 5 can then be cut off.
  • By folding the cover pieces 4 and 5 these define the path between them over a large area. Then only the loop 7 has to be hung over the driver 2.
  • the width of the cover pieces 4, 5 is expediently chosen to be the same as the width of the material web to be drawn in.
  • a metal mesh made of magnetizable metal can also be used.
  • both cover pieces from plastic foils with embedded particles made from permanent magnetic material.
  • the permanent magnetic material particles are then to be designed and arranged in such a way that the two cover pieces 4 and 5 attract one another in the folded state. This is achieved in that all poles of the same name of the permanent magnetic particles of a plastic film are directed towards the same side surface. The same applies to the second cover piece.
  • the cover pieces are to be arranged so that poles of the same name face the paramagnetic material particles of the two cover pieces 4, 5 in the folded state.

Description

Die Erfindung betrifft eine Einrichtung zum Befestigen einer Materialbahn an dem Mitnehmer einer Bahneinzugsvorrichtung einer Rollenrotationsdruckmaschine.The invention relates to a device for fastening a web of material to the driver of a web feeding device of a web-fed rotary printing press.

Bahneinzugsvorrichtungen für Rollenrotationsdruckmaschinen umfassen in der Regel seitlich neben einer Längskante der Bahn entlang des vorgesehenen Einzugsweges verlaufende Führungen, in denen ein Einzugselement bewegbar ist. Am Einzugselement ist ein Mitnehmer befestigt, der sich in Richtung zur Materialbahn erstreckt.Web infeed devices for web-fed rotary printing machines generally comprise guides which run laterally alongside a longitudinal edge of the web along the intended feed path and in which a feed element can be moved. A driver is attached to the feed element and extends in the direction of the material web.

Zur Befestigung der Materialbahn am Mitnehmer wurde wie sich aus der M.A.N.-Firmendruck- schrift « ROTOMAN Rollenoffset für Qualitätsdruck •, herausgegeben 1976, ergibt, bisher der Anfang der Materialbahn in Einzugsrichtung spitz zulaufend abgeschrägt. Dann wurden die Kanten des Anfanges der Materialbahn umklebt und der Anfang der Materialbahn mittels eines am einen Ende zu einer Schlaufe umgelegten Klebebandes am Mitnehmer befestigt. Die Verwendung von Klebebändern stellte dabei zum einen sicher, daß die Materialbahn mit den Klebebändern noch ausreichend dünn ist, um sie zwischen zwei voneinander abgestellten Zylindern eines Druckwerkes hindurchführen zu können. Zum anderen diente die Umklebung zur Verstärkung der Bahn, um ein Einreißen unter den beim Einziehen auftretenden Zugkräften zu vermeiden.For the fastening of the material web to the carrier, as can be seen from the M.A.N. company publication “ROTOMAN web offset for quality printing •, published in 1976, the beginning of the material web was tapered to a point in the feed direction. Then the edges of the beginning of the material web were taped over and the beginning of the material web was fastened to the carrier by means of an adhesive tape folded over at one end to form a loop. The use of adhesive tapes ensured on the one hand that the material web with the adhesive tapes is still sufficiently thin to be able to pass them between two cylinders of a printing unit that are parked apart. On the other hand, the adhesive tape was used to reinforce the web in order to avoid tearing under the tensile forces that occur when the web is pulled in.

Das Anbringen der Klebebänder muß an dem frei in der Luft hängenden Ende der Materialbahn im Raum zwischen der Vorratsrolle und den Walzen der Maschine, in die Materialbahn eingezogen werden soll, durchgeführt werden. Diese Arbeit ist zeitaufwendig. Sie führt weiterhin bei unsachgemäßer Durchführung leicht zu einem Lösen der Klebestreifen beim Einziehvorgang oder zu einer Bildung von Falten in der Materialbahn, an denen dann die Materialbahn beim Einzugsvorgang einreißen kann.The adhesive tapes must be attached to the free-hanging end of the material web in the space between the supply roll and the rollers of the machine into which the material web is to be drawn. This work is time consuming. It further leads light in case of improper execution to a loosening of the adhesive tape while at Einziehvor g g or to the formation of folds in the sheet of material, at which then the web may tear when pulling-in operation.

Der Erfindung liegt die Aufgabe zugrunde, eine Einrichtung zu schaffen, die das Verbinden der Materialbahn mit dem Mitnehmer vereinfacht und die Gefahr von Störungen durch Bahnrisse beim Einziehvorgang vermindert.The invention has for its object to provide a device that simplifies the connection of the material web with the driver and reduces the risk of disruptions due to web breaks during the pulling process.

Erfindungsgemäß wird diese Aufgabe durch Anwendung der im Kennzeichen des Anspruchs 1 angegebenen Maßnahmen gelöst.According to the invention, this object is achieved by applying the measures specified in the characterizing part of claim 1.

Bei Anwendung der Erfindung wird nicht nur der Zeitaufwand zur Herstellung der Verbindung der Materialbahn mit dem Mitnehmer vermindert. Da das die Deckstücke zusammenhaltende Magnetfeld über die gesamte Fläche des vorderen Endes der Materialbahn wirksam ist, wird auch die Haltekraft gleichmäßiger in die Materialbahn eingeleitet. Dies führt zu einer geringeren Gefahr eines Papierrisses während des Einziehvorganges, da partielle Zugspannungsspitzen an Klebestellen entfallen.When using the invention, not only is the time required to produce the connection of the material web to the driver reduced. Since the magnetic field holding the cover pieces together is effective over the entire area of the front end of the material web, the holding force is also introduced more uniformly into the material web. This leads to a lower risk of paper tearing during the pulling-in process, since partial tension peaks at the gluing points are eliminated.

Es ist zwar aus der BE-A-579 034 bekannt, zum Einführen einer Bahn aus feuchter Zellulose in einen Trockner, in dem die Bahn pneumatisch geführt wird, ein Band um eine Seitenkante der Bahn herumzulegen. In dem Band sind Federn angeordnet, die das Band an der Bahn festklemmen. Eine derartige Einrichtung ist jedoch zum Einziehen einer zu bedruckenden Materialbahn in eine Druckmaschine ungeeignet. Die einen ausreichenden Andruck sicherstellenden Federn sind zu dick, um durch den üblichen engen Spalt zwischen zwei voneinander abgestellten Zylindern eines Druckwerks zu passen. Auch lassen sich die erforderlichen Zugkräfte nicht über ein nur eine Seitenkante umgreifendes Band aufbringen, ohne daß die Gefahr eines Einreißens der Bahn besteht.It is known from BE-A-579 034 to place a band around a side edge of the web for introducing a web of moist cellulose into a dryer in which the web is pneumatically guided. Springs are arranged in the band, which clamp the band to the web. However, such a device is unsuitable for pulling a material web to be printed into a printing press. The springs ensuring sufficient pressure are too thick to fit through the usual narrow gap between two cylinders of a printing unit that are parked apart. Nor can the required tensile forces be exerted on a band encompassing only one side edge without the risk of the web tearing.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen und der Beschreibung eines Ausführungsbeispieles der Erfindung anhand der Zeichnung. In dieser zeigt

  • Fig. 1 die erfindungsgemäße Anordnung in einer perspektivischen Darstellung und
  • Fig. 2 eine Ansicht der Deckstücke von oben.
Further features and advantages of the invention result from the subclaims and the description of an embodiment of the invention with reference to the drawing. In this shows
  • Fig. 1 shows the arrangement according to the invention in a perspective view
  • Fig. 2 is a view of the cover pieces from above.

Die bekannte, nicht näher dargestellte Bahneinzugsvorrichtung umfaßt ein Einzugselement 1, beispielsweise eine Kette oder ein Seil, an dem ein Mitnehmer 2 befestigt ist. Das Einzugselement 1 ist seitlich neben einer Papierbahn 3 angeordnet, die mittels-der Einzugsvorrichtung in eine Verarbeitungsmaschine, beispielsweise eine Druckmaschine, eingezogen werden soll.The known web retraction device, not shown in detail, comprises a retraction element 1, for example a chain or a rope, to which a driver 2 is fastened. The feed element 1 is arranged laterally next to a paper web 3 which is to be drawn into a processing machine, for example a printing machine, by means of the feed device.

Zur Verbindung des Mitnehmers 2 mit der Materialbahn 3 sind zwei Deckstücke 4, 5 vorgesehen, zwischen denen das vordere Ende der Materialbahn 3 festgelegt wird. Hierzu ist das Deckstück 4 als Kunststoff-Folie ausgeführt, in die Partikel aus permanentmagnetischem Werkstoff eingelagert sind. Die Partikel sind dabei derart gerichtet in die Folie eingelagert, daß alle Pole zu einer Seitenfläche des Deckstückes 4 hin orientiert sind, und zwar zu der Seitenfläche, die auf die Materialbahn 3 aufgelegt wird. Das andere Deckstück 5. ist als flexible Metallfolie aus einem magnetisierbaren Material, wie Weicheisen, ausgebildet. Die Breite der Deckstücke 4, 5 an den Hinterkanten 8, 9 ist zweckmäßig gleich der Breite der einzuziehenden Materialbahn bemessen. Weiterhin verlaufen die äußeren Seitenkanten 10, 11 schräg in Richtung zum Mitnehmer 2. Beide Deckstücke sind miteinander über einen Rückenstreifen 6 aus flexiblem Material verbunden. An dem Deckstück 4 ist eine Schlaufe 7 zum Einhängen am Mitnehmer 2 unlösbar befestigt. Der Rückenstreifen 6 kann auch entfallen. Dann ist zweckmäßig je ein Ende der Schlaufe 7 an je einem Deckstück 4, 5 befestigt.To connect the driver 2 to the material web 3, two cover pieces 4, 5 are provided, between which the front end of the material web 3 is fixed. For this purpose, the cover 4 is designed as a plastic film, in which particles of permanent magnetic material are embedded. The particles are embedded in the film in such a way that all poles are oriented towards one side surface of the cover piece 4, specifically to the side surface that is placed on the material web 3. The other cover piece 5 is designed as a flexible metal foil made of a magnetizable material, such as soft iron. The width of the cover pieces 4, 5 at the trailing edges 8, 9 is expediently dimensioned equal to the width of the material web to be drawn in. Furthermore, the outer side edges 10, 11 run obliquely in the direction of the driver 2. Both cover pieces are connected to one another via a back strip 6 made of flexible material. On the cover piece 4, a loop 7 is permanently attached to the driver 2 for hanging. The back strip 6 can also be omitted. Then one end of the loop 7 is expediently attached to a cover piece 4, 5.

Soll eine Materialbahn 3 mit der erfindungsgemäßen Befestigungseinrichtung an die Einzugsvorrichtung angehängt werden, so werden die Deckstücke 4 und 5 über das vordere Ende der Materialbahn 3 geklappt. Anschließend kann das über die Deckstücke 4 und 5 hinausragende Stück der Papierbahn 3 abgeschnitten werden. Durch das Zusammenklappen der Deckstücke 4 und 5 legen diese die Bahn zwischen sich großflächig fest. Anschließend ist nur noch die Schlaufe 7 über den Mitnehmer 2 zu hängen.If a material web 3 is to be attached to the feed device with the fastening device according to the invention, the cover pieces 4 and 5 are folded over the front end of the material web 3. The piece of paper web 3 protruding beyond cover pieces 4 and 5 can then be cut off. By folding the cover pieces 4 and 5 these define the path between them over a large area. Then only the loop 7 has to be hung over the driver 2.

Die Breite der Deckstücke 4, 5 ist zweckmäßig gleich der Breite der einzuziehenden Materialbahn gewählt.The width of the cover pieces 4, 5 is expediently chosen to be the same as the width of the material web to be drawn in.

Anstelle einer Metallfolie 5 kann auch ein Metallgeflecht aus magnetisierbarem Metall Verwendung finden.Instead of a metal foil 5, a metal mesh made of magnetizable metal can also be used.

Weiterhin besteht die Möglichkeit, auch beide Deckstücke aus Kunststoff-Folien mit eingelagerten Partikeln aus permanentmagnetischem Werkstoff herzustellen. Die permanentmagnetischen Werkstoffpartikel sind dann derart auszubilden und gerichtet anzuordnen, daß sich die beiden Deckstücke 4 und 5 in zusammengeklapptem Zustand gegenseitig anziehen. Dies wird dadurch erreicht, daß alle gleichnamigen Pole der permanentmagnetischen Partikel einer Kunststoff-Folie zur gleichen Seitenfläche hin gerichtet sind. Das gleiche gilt für das zweite Deckstück. Dabei sind weiterhin die Deckstücke so anzuordnen, daß sich ungleichnamige Pole der paramagnetischen Werkstoffpartikel der beiden Deckstücke 4, 5 in zusammengeklapptem Zustand gegenüberstehen.There is also the possibility of producing both cover pieces from plastic foils with embedded particles made from permanent magnetic material. The permanent magnetic material particles are then to be designed and arranged in such a way that the two cover pieces 4 and 5 attract one another in the folded state. This is achieved in that all poles of the same name of the permanent magnetic particles of a plastic film are directed towards the same side surface. The same applies to the second cover piece. Furthermore, the cover pieces are to be arranged so that poles of the same name face the paramagnetic material particles of the two cover pieces 4, 5 in the folded state.

Wie die vorstehende Beschreibung zeigt, ist die Erfindung nicht auf das dargestellte Ausführungsbeispiel beschränkt.As the above description shows, the invention is not restricted to the exemplary embodiment shown.

Claims (7)

1. Device for attaching a material web by means of a loop (7) to the catch (2) of a web threading device of a web-fed rotary printing machine, characterised in that two flexible magnetic cover pieces (4, 5) connected to the loop (7) are provided, between which the front end of the material web (3) to be threaded can be secured.
2. Device according to claim 1, characterised in that the two cover pieces (4, 5) contain particles of permanent magnetic material embedded in a plastics film and the particles are arranged to be directed so that the cover pieces attract each other.
3. Device according to claim 1, characterised in that one cover piece (4) contains particles of permanent magnetic material embedded in a plastics film, the poles of which are directed towards a side surface, and the other cover piece is of magnetisable material.
4. Device according to claim 3, characterised in that the other cover piece comprises a metal film. -
5. Device according to claim 3, characterised in that the other cover piece comprises a metal mesh.
6. Device according to one of the preceding claims, characterised in that the two cover pieces (4, 5) are joined together by means of a back-strip (6) of flexible material extending parallel to one lateral edge.
7. Device according to one of the preceding claims, characterised in that one lateral edge (10, 11) of each of the two cover pieces (4, 5) is constructed to extend obliquely, in the direction towards the catch (2), from the width of the material web (3) to be threaded.
EP84102323A 1983-03-15 1984-03-05 Device for attaching a web to the hook of a web threading device Expired EP0118860B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3309121A DE3309121C1 (en) 1983-03-15 1983-03-15 Device for attaching a material web to the driver of a web feed device
DE3309121 1983-03-15

Publications (3)

Publication Number Publication Date
EP0118860A2 EP0118860A2 (en) 1984-09-19
EP0118860A3 EP0118860A3 (en) 1985-09-25
EP0118860B1 true EP0118860B1 (en) 1989-03-15

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EP84102323A Expired EP0118860B1 (en) 1983-03-15 1984-03-05 Device for attaching a web to the hook of a web threading device

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US (1) US4706862A (en)
EP (1) EP0118860B1 (en)
JP (2) JPS59172350A (en)
DE (1) DE3309121C1 (en)

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DE19837362A1 (en) * 1998-08-18 2000-02-24 Koenig & Bauer Ag Paper web pulling-in device for rotary press
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DE29710607U1 (en) * 1997-06-18 1997-11-13 Brauer Michael Element for facilitating the threading of printing paper
DE19837362A1 (en) * 1998-08-18 2000-02-24 Koenig & Bauer Ag Paper web pulling-in device for rotary press
DE19837362B4 (en) * 1998-08-18 2004-02-12 Koenig & Bauer Ag Device for drawing in a web of printing material
DE10024012B4 (en) * 2000-05-16 2004-10-21 Koenig & Bauer Ag Device for pulling a web
US6817506B2 (en) 2000-05-16 2004-11-16 Koenig & Bauer Aktiengesellschaft Method and device for feeding a web
DE102016125327A1 (en) * 2016-12-22 2018-06-28 Océ Holding B.V. Einziehhilfe for inserting tape-shaped recording media in the transport path of printing devices

Also Published As

Publication number Publication date
EP0118860A2 (en) 1984-09-19
EP0118860A3 (en) 1985-09-25
JPH0520742Y2 (en) 1993-05-28
JPH0497753U (en) 1992-08-24
US4706862A (en) 1987-11-17
JPS59172350A (en) 1984-09-29
DE3309121C1 (en) 1984-08-16

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