EP0226749A2 - Pair of traction rollers in a rotary printing machine for advancing print carrier webs - Google Patents

Pair of traction rollers in a rotary printing machine for advancing print carrier webs Download PDF

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Publication number
EP0226749A2
EP0226749A2 EP86114636A EP86114636A EP0226749A2 EP 0226749 A2 EP0226749 A2 EP 0226749A2 EP 86114636 A EP86114636 A EP 86114636A EP 86114636 A EP86114636 A EP 86114636A EP 0226749 A2 EP0226749 A2 EP 0226749A2
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EP
European Patent Office
Prior art keywords
webs
rollers
pair
elastic
width
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
EP86114636A
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German (de)
French (fr)
Other versions
EP0226749B1 (en
EP0226749A3 (en
Inventor
Johannes Richter
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
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Filing date
Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0226749A2 publication Critical patent/EP0226749A2/en
Publication of EP0226749A3 publication Critical patent/EP0226749A3/en
Application granted granted Critical
Publication of EP0226749B1 publication Critical patent/EP0226749B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/22—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement
    • B65H45/221—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement incorporating folding triangles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/02—Advancing webs by friction roller

Definitions

  • the invention relates to a pair of pulling rollers for a rotary printing press for transporting printing medium webs, in which one roller is positioned against the other and both rollers can be driven evenly with advance over the speed of the paper web and the inserts offset relative to one another on their circumference in relation to the other roller have made of elastic material.
  • a print carrier web (1) usually a paper web, coming from a former (2) is fed to a pair of draw rollers comprising two rollers (3 and 4).
  • the rollers (3 and 4) can be mounted with their pins (5 and 6) between two side walls (7 and 7a).
  • the pull rollers (3, 4) are placed against each other.
  • storage is preferably carried out in a single side wall or in a single side part (7), in which the drive for the pair of draw rollers (3, 4) is also accommodated or arranged.
  • the pull rollers (3, 4) are mounted eccentrically to the side part (7) which can be adjusted centrally in the side wall. This enables the pair of pulling rollers (3, 4) to be aligned with the funnel tips and an inexpensive possibility of correction to the print carrier webs (1).
  • the rollers (3, 4) shown are steel rollers. On their circumference they have grooves (8) running in the axial direction, between which there are webs (9) made of the base material, ie in the exemplary embodiment made of steel.
  • the grooves (8) are provided with a material that is less elastic than the material of the webs (9).
  • Plastic or gum arabic is suitable as an elastic strip (10) for filling the grooves (8).
  • the width of the webs (9), based on the width of the elastic strips (10), is in each case seen in the circumferential direction, the same size but preferably smaller, as can be seen from FIG. This advantageously results in squeeze areas (11) which need only have a very small depth, for example in the micro range. As a result, a uniform tension for the transport of the print carrier web (1) is achieved over the entire width of the rollers (3, 4).
  • the production of the pair of draw rollers (3, 4) is based on the known draw rollers dealt with at the beginning. much easier, since only grooves running in the axial direction into the rollers e.g. must be milled, which are then filled with an elastic material.
  • the division ratio between grooves and webs is determined as a function of the width of the rollers (3, 4) and their diameter and, if appropriate, of a predetermined permissible slip.
  • the width of the webs (9) is equal to or smaller than the width of the elastic strips (10)
  • the webs penetrate slightly into the material of the elastic strips (10). a, whereby the squeeze areas (11) mentioned arise. This results in a small slip, which can be limited by the measure mentioned above.

Landscapes

  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Rotary Presses (AREA)

Abstract

Ein Zugswalzenpaar umfaßt zwei Stahlwalzen, die in jeweils über ihren gesamten Umfang in Achsrichtung verlaufend Nuten und Stege aufweisen. Die Nuten werden mit einem Material ausgefüllt, das elastischer als das Material der Stege ist. Die Breite der Stege ist gleich oder kleiner als die Breite der elastischen Streifen. Durch die versetzte Anordnung der elastischen Streifen und der Stege zwischen den beiden Walzen kann jeweils ein weniger elastischer Steg in einen elastischen Streifen eindringen, wodurch an den Kantenbereichen der Stege Quetschbereiche erzeugt werden, die einen gleichmäßigen Zug über die gesamte Breite der Walze ermöglichen.A pair of traction rollers comprises two steel rollers, each of which has grooves and webs running in the axial direction over their entire circumference. The grooves are filled with a material that is more elastic than the material of the webs. The width of the webs is equal to or less than the width of the elastic strips. Due to the staggered arrangement of the elastic strips and the webs between the two rollers, a less elastic web can penetrate into an elastic strip, as a result of which squeeze regions are generated at the edge regions of the webs, which enable a uniform tension over the entire width of the roller.

Description

Die Erfindung betrifft ein Zugwalzenpaar für eine Rotationsdruckmaschine zum Transportieren von Druckträgerbahnen, bei dem eine Walze gegen die andere angestellt und beide Walzen gleichmäßig mit Voreilung gegenüber der Einlaufgeschwindigkeit der Papierbahn antreibbar sind und die an ihrem Umfang jeweils, bezogen auf die andere Walze, zueinander versetzte Einlagen aus elastischem Material aufweisen.The invention relates to a pair of pulling rollers for a rotary printing press for transporting printing medium webs, in which one roller is positioned against the other and both rollers can be driven evenly with advance over the speed of the paper web and the inserts offset relative to one another on their circumference in relation to the other roller have made of elastic material.

Aus der DE-PS 23 57 208 ist bereits ein Zugwalzenpaar für Rotationsdruckmaschinen zum Transportieren von Papierbahnen bekannt, bei dem die beiden Zugwalzen an ihrem Umfang jeweils abwechselnd Ringzonen aus elastischem und vergleichsweise weniger elastischem Material aufweisen. Dabei laufen in der gesamten Zugwalzenpaarung jeweils die unelastischen Ringzonen der einen Zugwalze mit ihrer gesamten Breite auf den elastischen Ringzonen bzw. Einlagen der anderen Zugwalze. Die elastischen Ringzonen weisen jeweils die gleiche Breite auf wie die vergleichsweise unelastischen Ringzonen. Der Nachteil dieses bekannten Zugwalzenpaares liegt zum einen in der aufwendigen Fertigung der Walzen und zum anderen in der Verformung der elastischen Ringe in Laufrichtung. Infolge der unterschiedlichen Paarung der Ringe wird durch Durchmesserverringerung der elastischen Ringe eine vermehrte Walkarbeit auftreten. Dies bedeutet größere Erwärmung und Abnutzung. Dabei entstehen zwangsläufig auch Längsverformungen an der Druckträger- bzw. Papierbahn, die sich bis zum Falztrichter hin verlagern können. Die Folge wiederum sind Bahnspannungsschwankungen, die sich nachteilig auf den Längsfalz auswirken können.From DE-PS 23 57 208 a pair of pull rollers for rotary printing presses for transporting paper webs is already known, in which the two pull rollers alternately have ring zones on their circumference made of elastic and comparatively less elastic material. The inelastic ring zones of one pulling roller run with their entire width on the elastic ring zones or inserts of the other pulling roller in the entire pair of pulling rollers. The elastic ring zones each have the same width as the comparatively inelastic ring zones. The disadvantages of this known pair of pull rollers are, on the one hand, the complex manufacture of the rollers and, on the other hand, the deformation of the elastic rings in the running direction. As a result of the different pairing of the rings, increased flexing work will occur due to the reduction in diameter of the elastic rings. This means greater warming and wear. This inevitably also results in longitudinal deformations on the print carrier or paper web, which can shift up to the former. The consequence in turn is web tension fluctuations, which can have a negative effect on the longitudinal fold.

Aufgabe der Erfindung ist es, ein Zugwalzenpaar zu schaffen, das kostengünstig hergestellt werden kann und mit dem ein gleichmäßiger Zug auf die zu befördernde Druckträger- bzw. Papierbahn über deren gesamten Breite erzielt werden kann. Diese Aufgabe wird durch die Anwendung der Merkmale des kennzeichnenden Teils des Patentanspruchs 1 gelöst. Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und aus der Beschreibung in Verbindung mit den Zeichnungen. In diesen zeigen jeweils schematisch:

  • Fig 1 in der perspektivischen Darstellung das erfindungsgemäße Zugwalzenpaar und
  • Fig.2 einen Teilschnitt durch das Zugwalzenpaar gemäß Fig.1.
The object of the invention is to provide a pair of draw rollers which can be produced inexpensively and with which a uniform tension on the print carrier or paper web to be conveyed can be achieved over its entire width. This object is achieved by applying the features of the characterizing part of patent claim 1. Further developments of the invention result from the subclaims and from the description in conjunction with the drawings. Each of these shows schematically:
  • Fig. 1 in a perspective view of the pair of pull rollers according to the invention and
  • 2 shows a partial section through the pair of drawing rollers according to FIG.

Wie aus Fig.l hervorgeht, wird eine Druckträgerbahn (1), üblicherweise eine Papierbahn, von einem Falztrichter (2) kommend einem Zugwalzenpaar zugeführt, das zwei Walzen (3 und 4)umfaßt. Die Walzen (3 und 4) können mit ihren Zapfen (5 und 6) zwischen zwei Seitenwänden gelagert werden (7 und 7a). Bei dieser Lagerung werden die Zugwalzen (3, 4) zueinander angestellt. Vorzugsweise erfolgt jedoch eine Lagerung in einer einzigen Seitenwand bzw. in einem einzigen Seitenteil (7), in dem auch der Antrieb für das Zugwalzenpaar (3, 4) untergebracht bzw. angeordnet ist.As can be seen from Fig.l, a print carrier web (1), usually a paper web, coming from a former (2) is fed to a pair of draw rollers comprising two rollers (3 and 4). The rollers (3 and 4) can be mounted with their pins (5 and 6) between two side walls (7 and 7a). In this storage, the pull rollers (3, 4) are placed against each other. However, storage is preferably carried out in a single side wall or in a single side part (7), in which the drive for the pair of draw rollers (3, 4) is also accommodated or arranged.

Die Zugswalzen (3, 4) sind exzentrisch zum zentrisch in der Seitenwand einstellbaren Seitenteil (7) gelagert. Dies ermöglicht ein Ausrichten des Zugwalzenpaares (3, 4) auf die Trichterspitzen und eine günstige Korrekturmöglichkeit auf die Druckträgerbahnen (1).The pull rollers (3, 4) are mounted eccentrically to the side part (7) which can be adjusted centrally in the side wall. This enables the pair of pulling rollers (3, 4) to be aligned with the funnel tips and an inexpensive possibility of correction to the print carrier webs (1).

Die dargestellten Walzen (3, 4) sind Stahlwalzen. Sie weisen an ihrem Umfang in Achsrichtung verlaufende Nuten (8) auf, zwischen denen sich jeweils Stege (9) aus dem Grundmaterial, d.h. im Ausführungsbeispiel aus Stahl, befinden. Die Nuten (8) werden mit einem Material versehen, das weniger elastisch als das Material der Stege (9) ist. Als elastische Streifen (10) zur Ausfüllung der Nuten (8) eignet sich Kunststoff oder Gummiarabikum. Vorzugsweise erstrecken sich sowohl die Stege (9) als auch die Nuten (8) bzw. die elastischen Streifen (10) über die gesamte Länge der Walzen (3, 4).The rollers (3, 4) shown are steel rollers. On their circumference they have grooves (8) running in the axial direction, between which there are webs (9) made of the base material, ie in the exemplary embodiment made of steel. The grooves (8) are provided with a material that is less elastic than the material of the webs (9). Plastic or gum arabic is suitable as an elastic strip (10) for filling the grooves (8). Preferably extend both the webs (9) and the grooves (8) or the elastic strips (10) over the entire length of the rollers (3, 4).

Die Breite der Stege (9) ist, bezogen auf die Breite der elastischen Streifen (10), jeweils in Umfangsrichtung gesehen, gleich groß aber vorzugsweise kleiner, wie aus Fig.2 hervorgeht. Dadurch ergeben sich in vorteiler Weise Quetschbereiche (11), die lediglich eine sehr geringe Tiefe, beispielsweise im Mikrobereich, aufzuweisen brauchen. Dadurch wird über die gesamte Breite der Walzen (3, 4) ein gleichmäßiger Zug für den Transport der Druckträgerbahn (1) erreicht.The width of the webs (9), based on the width of the elastic strips (10), is in each case seen in the circumferential direction, the same size but preferably smaller, as can be seen from FIG. This advantageously results in squeeze areas (11) which need only have a very small depth, for example in the micro range. As a result, a uniform tension for the transport of the print carrier web (1) is achieved over the entire width of the rollers (3, 4).

Außerdem ist die Fertigung des Zugwalzenpaares (3, 4), bezogen auf die eingangs abgehandelten bekannten Zugwalzen. wesentlich einfacher, da lediglich in Achsrichtung verlaufende Nuten in die Walzen z.B. eingefräst werden müssen, die anschließend mit einem elastischen Material ausgefüllt werden. Das Teilungsverhältnis zwischen Nuten und Stegen wird festgelegt in Abhängigkeit von der Breite der Walzen (3, 4) und deren Durchmesser sowie gegebenenfalls von einem vorgegebenen zulässigen Schlupf. Wie aus Fig.2 ersichtlich ist, dringen aufgrund der angegebenen Dimensionen, nach der die Breite der Stege (9) gleich oder kleiner als die Breite der elastischen Streifen (10) ist, die Stege jeweils geringfügig in das Material der elastischen Streifen (10) ein, wodurch die erwähnten Quetschbereiche (11) entstehen. Dadurch ergibt sich ein geringer Schlupf, der durch die vorangehend erwähnte Maßnahme begrenzt werden kann.In addition, the production of the pair of draw rollers (3, 4) is based on the known draw rollers dealt with at the beginning. much easier, since only grooves running in the axial direction into the rollers e.g. must be milled, which are then filled with an elastic material. The division ratio between grooves and webs is determined as a function of the width of the rollers (3, 4) and their diameter and, if appropriate, of a predetermined permissible slip. As can be seen from FIG. 2, due to the dimensions given, according to which the width of the webs (9) is equal to or smaller than the width of the elastic strips (10), the webs penetrate slightly into the material of the elastic strips (10). a, whereby the squeeze areas (11) mentioned arise. This results in a small slip, which can be limited by the measure mentioned above.

Claims (3)

1. Zugwalzenpaar für eine Rotationsdruckmaschine zum Transportieren von Druckträgerbahnen, bei dem eine Walze gegen die andere angestellt und beide Walzen gleichmäßig mit Voreilung gegenüber der Einlaufgeschwindigkeit der Papierbahn antreibbar sind und die an ihrem Umfang jeweils, bezogen auf die andere Walze, zueinander versetzte Einlagen aus elastischem Material aufweisen, dadurch gekennzeichnet, daß jede der beiden Zugwalzen (3, 4) in Achsrichtung Nuten (8) und Stege (9) aufweist, daß die Nuten (8) mit einem Material (10) ausgefüllt sind, das elastischer als das Material der Stege (9) ist und daß die Breite der Stege (9) gleich oder kleiner als die Breite der elastischen Streifen (10) ist.1. pair of pulling rollers for a rotary printing press for transporting printing medium webs, in which one roller is positioned against the other and both rollers can be driven evenly with lead over the infeed speed of the paper web and the inserts made of elastic on their circumference, relative to the other roller, are offset from one another Have material, characterized in that each of the two pull rollers (3, 4) in the axial direction has grooves (8) and webs (9), that the grooves (8) are filled with a material (10) which is more elastic than the material of the Is webs (9) and that the width of the webs (9) is equal to or less than the width of the elastic strips (10). 2. Zugwalzenpaar nach Anspruch 1, dadurch gekennzeichnet, daß die Stege (9) aus Stahl und die elastischen Streifen (10) aus Gummi oder Kunststoff bestehen.2. pair of pull rollers according to claim 1, characterized in that the webs (9) made of steel and the elastic strips (10) made of rubber or plastic. 3. Zugwalzenpaar nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Walzen (3, 4) in einem den Antrieb umfassenden Seitenteil (7) gelagert sind.3. pair of pull rollers according to claim 1 or 2, characterized in that the rollers (3, 4) are mounted in a side part (7) comprising the drive.
EP86114636A 1985-12-20 1986-10-22 Pair of traction rollers in a rotary printing machine for advancing print carrier webs Expired - Lifetime EP0226749B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3545295 1985-12-20
DE3545295A DE3545295C1 (en) 1985-12-20 1985-12-20 Pull roller pair for a rotary printing machine for transporting printing material webs

Publications (3)

Publication Number Publication Date
EP0226749A2 true EP0226749A2 (en) 1987-07-01
EP0226749A3 EP0226749A3 (en) 1989-03-01
EP0226749B1 EP0226749B1 (en) 1991-01-16

Family

ID=6289078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86114636A Expired - Lifetime EP0226749B1 (en) 1985-12-20 1986-10-22 Pair of traction rollers in a rotary printing machine for advancing print carrier webs

Country Status (4)

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US (1) US4748910A (en)
EP (1) EP0226749B1 (en)
JP (1) JPS62157167A (en)
DE (1) DE3545295C1 (en)

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Publication number Priority date Publication date Assignee Title
DE3932931A1 (en) * 1989-10-03 1991-04-11 Roland Man Druckmasch FOLDING VALVE CYLINDER FOR A FOLDING APPARATUS
US5398610A (en) * 1993-03-25 1995-03-21 Baldwin Web Controls Anti-wrap device for a web press
US6298782B1 (en) 1993-03-25 2001-10-09 Baldwin Web Controls Anti-wrap device for a web press
US5678484A (en) * 1993-03-25 1997-10-21 Baldwin Web Controls Anti-wrap device for a web press
GB2317606A (en) * 1994-03-04 1998-04-01 Fujitsu Ltd Roller abrasion evaluation
JPH07243436A (en) * 1994-03-04 1995-09-19 Fujitsu Ltd Medium transferring rubber roller and its abrasion estimation
JPH08208088A (en) * 1994-10-27 1996-08-13 Minnesota Mining & Mfg Co <3M> Dual traction roller
SE518032C2 (en) * 2000-12-18 2002-08-20 Tetra Laval Holdings & Finance Methods and apparatus for producing a packaging material
GB2440399A (en) * 2006-07-26 2008-01-30 Gavin Agar Scaffolding erection conveyor
DE102008009508A1 (en) * 2008-02-15 2009-08-20 Manroland Ag Funnel shaped infeed rollers for e.g. eight newspaper sided broad printing machine, have drive between which coupler is arranged, where rollers are arranged after former and form gap for paper web that is longitudinally folded via former
CN103601027A (en) * 2013-11-17 2014-02-26 孙光恩 Using method of cloth rolling machine feeding strip
CN103640921A (en) * 2013-11-17 2014-03-19 孙光恩 Method for assembling cloth rolling machine advancing strips

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2362393A1 (en) * 1972-12-21 1974-06-27 Horsens Teknisk Gummi As EXPANDER ROLE
DE2357208A1 (en) * 1973-11-16 1975-05-22 Frankenthal Ag Albert Feed roller pair on rotary printing machine - transports material web at predetermined stress using limited contact pressure

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US486631A (en) * 1892-11-22 Pulley
US2219077A (en) * 1939-12-01 1940-10-22 Johnson S Company Asbestos fiberizer
US2434820A (en) * 1947-02-01 1948-01-20 Draper Corp Loom temple roll
US3022231A (en) * 1959-07-27 1962-02-20 Frank W Broderick Method of producing matching embossing rolls
US3060545A (en) * 1960-07-22 1962-10-30 E F Kress Shone Web spreading device
DE2356208A1 (en) * 1973-11-10 1975-05-15 Timaplast Kunststoffverarbeitu Suspensible pouch or pocket of weldable plastics film - for holding and displaying merchandise, is formed by two superposed seam-welded films to make a pocket and a foldable flap
US4291438A (en) * 1979-02-17 1981-09-29 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Fiber feeding roller of open-end spinning apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2362393A1 (en) * 1972-12-21 1974-06-27 Horsens Teknisk Gummi As EXPANDER ROLE
DE2357208A1 (en) * 1973-11-16 1975-05-22 Frankenthal Ag Albert Feed roller pair on rotary printing machine - transports material web at predetermined stress using limited contact pressure

Also Published As

Publication number Publication date
US4748910A (en) 1988-06-07
EP0226749B1 (en) 1991-01-16
EP0226749A3 (en) 1989-03-01
DE3545295C1 (en) 1986-10-16
JPS62157167A (en) 1987-07-13

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