EP1285875B1 - Dispositif pour réunir au moins deux bandes de papier en une bande multicouche - Google Patents

Dispositif pour réunir au moins deux bandes de papier en une bande multicouche Download PDF

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Publication number
EP1285875B1
EP1285875B1 EP01810073A EP01810073A EP1285875B1 EP 1285875 B1 EP1285875 B1 EP 1285875B1 EP 01810073 A EP01810073 A EP 01810073A EP 01810073 A EP01810073 A EP 01810073A EP 1285875 B1 EP1285875 B1 EP 1285875B1
Authority
EP
European Patent Office
Prior art keywords
roll
roller
outermost layer
layer
paper
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.)
Revoked
Application number
EP01810073A
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German (de)
English (en)
Other versions
EP1285875A1 (fr
Inventor
Alfred Doppler
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.)
Spengler Electronic AG
Original Assignee
Spengler Electronic 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
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Application filed by Spengler Electronic AG filed Critical Spengler Electronic AG
Publication of EP1285875A1 publication Critical patent/EP1285875A1/fr
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Anticipated expiration legal-status Critical
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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
    • B65H39/00—Associating, collating, or gathering articles or webs
    • B65H39/16—Associating two or more webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/513—Modifying electric properties
    • B65H2301/5132—Bringing electrostatic charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/14—Roller pairs

Definitions

  • the present invention relates to an apparatus for joining at least two paper webs to a paper strand as defined in the preamble of independent claim 1.
  • an electrostatic paper strand adhesion is used, which serves to hold together several united into a paper strand paper webs electrostatically.
  • For uniting the paper webs are normally used two mutually spaced or almost without spacing sandwich rolls, between which the paper webs are performed and pressed together.
  • a pair of knife rollers is arranged, through which the paper strand is divided into individual sheet packages.
  • the single-sheet packets pass through a collecting cylinder into a folding cylinder and are finally folded.
  • the outermost paper web on one side with positive charge and the outermost paper web on the other side with negative charge is electrically charged, so that there is a flow of current through the paper strand and to an electrostatic Liability between the individual paper webs comes, which persists until after folding.
  • a disadvantage of this charging variant is the additional space required by the inductor electrodes. Especially with older folders they can be due to the limited space often bad or not install.
  • the directly opposite electrodes must be adjusted or covered depending on the paper strand width, so that they are always smaller than the paper strand width in the performance field, since otherwise a short circuit could occur.
  • the performance field should not be too small, in order not to reduce the adhesion to the side edges, which would lead to so-called beating corners.
  • the paper strand between the individual paper webs in the area of the inductor electrodes there are still often minimal air layers which can impair the adhesive effect.
  • paper strand adhesions which charge the paper strand via the sandwich rolls, which are in contact with the outermost paper web on both sides of the paper strand.
  • the sandwich rolls have a semiconductive outermost layer which is supplied with power via the roll core.
  • the power supply of the roller core itself via the shaft for example, by sliding contact of the current source led from the power line via a slip ring with the shaft from the outside or, if the shaft a hollow shaft is, from the inside or by direct connection of the power line with a roller bearing shell.
  • a disadvantage of this indirect type of charging of the paper strand is that the bearings of the rolls must be laboriously isolated because the roll core is under tension.
  • the power transmission via slip rings or roller bearings requires appropriate maintenance, which must be performed by specially trained personnel.
  • the current distribution on the roll surface is not uniform in every case. At reduced paper strand widths, this can lead to a loss of effect, since where the two sandwich rolls directly touch without intervening strand of paper, a short circuit occurs.
  • the invention has the following object.
  • To create is a device for joining at least two paper webs to a paper strand of the type mentioned, which is easy and quick to install and maintain.
  • Preferably also existing folders should be retrofitted in a simple manner.
  • An apparatus for uniting at least two paper webs into a paper strand comprises two sandwich rolls, between which the paper webs can be carried out and from which they can be brought together to form a paper strand.
  • the device comprises a roller pair with a first and a second roller, each having a highly conductive or semiconducting outermost layer. These first and second rolls may be the two mentioned sandwich rolls.
  • Charging means are provided to electrically charge at least the outermost layer of the first roller, the charging means according to the invention comprising an inductor electrode spaced from the first roller.
  • the device according to the invention comprises a further inductor electrode which is arranged at a distance from the second roller in order to electrically charge its outermost layer with a charge of opposite magnitude to the outermost layer of the first roller.
  • the first and / or the second roller have a semiconductive outermost layer, an underlying highly conductive layer, an underlying insulating layer and a core.
  • the highly conductive layer arranged under the semiconducting outermost layer which transfers the current through the paper strand to the counter-roller, enables a uniform current distribution even when a short electrode is used as the inductor electrode, which extends over only a part of the width of the paper strand.
  • the insulating layer prevents the charge from flowing into the core, which is usually connected to the machine earth via the bearings.
  • the first and / or the second roller have a semiconducting outermost layer, an underlying insulating layer and a core.
  • the power field of the associated inductor electrode must extend over approximately the entire roll width in order to ensure optimum current distribution.
  • a further alternative embodiment variant is characterized in that the first and / or the second roller have an upwardly or semiconducting outermost layer and a core directly underneath.
  • the second roll is a steel roll and the highly conductive outermost layer is formed by the steel roll itself.
  • the bearings of the first and / or the second roller are electrically isolated in certain embodiments. It can then be dispensed with an insulating layer around the core.
  • the first and second rolls are the two sandwich rolls. Immediately after merging the paper webs to the paper strand they are charged so that the electrostatic adhesion begins to act immediately. In this way, the adhesion of deteriorating inclusion of air layers can be avoided.
  • the first and the second roller in the direction of the paper strand after the two sandwich rolls are arranged so that the paper strand between them is feasible and abuts both, preferably the first and the second roller in the direction of Paper strand are arranged offset.
  • the inductor electrode or electrodes are arranged by the first and optionally the second roller at an effective distance of between 1 mm and 50 mm, wherein the voltage applied to the inductor electrode or electrodes is preferably between 10 kV and 60 kV amounts to. It can be achieved as optimal adhesion.
  • this is installed in a folder.
  • the first and second rolls 3 are both formed as 3-layer rolls and serve as sandwich rolls, between which five paper webs 1a-1e performed and merged into a paper strand 1 and-pressed.
  • the paper strand 1 then passes to a provided with a transverse knife blade roller 4 and a counter-roller 5, between which it is divided into individual sheet packages.
  • the single-sheet packets are then fed by a pair of draw rollers 6, first a collecting cylinder 7 and then a folding cylinder 8 and are finally folded.
  • the first and second rollers 3 each have a semiconducting outermost layer 34, an underlying highly conductive layer 33, an underlying insulating layer 32, and a core 31.
  • the core 31 comprises a shaft 311, via which the roller 3 is rotatably mounted in bearings 35 in the machine frame 9.
  • the bearings of the rollers 3 are not electrically insulated, which is not necessary due to the insulating layer 32.
  • the core 31 is normally made of steel, while the semiconductive outermost layer 34 is preferably made of rubber.
  • the highly conductive layer 33 and the insulating layer 32 consist of conventional conductive or insulating materials, for example metal, rubber or synthetic resin.
  • two inductor electrodes 2 which are arranged in approximately 1-50 mm distance from each one of the two rollers 3.
  • the two inductor electrodes 2 are placed under a high voltage opposite sign, which can be up to 60 kV or -60 kV. This results in a flow of current from one inductor electrode 2 across the air gap to the semiconductive outermost layer 34 and the highly conductive layer 33 of the first roller 3, and from there due to direct contact with the paper strand 1 therethrough to the semiconductive outermost one Layer 34 and the highly conductive layer 33 of the second roller 3.
  • the highly conductive layer 33 under the semiconductive outermost layer 34 serves to uniformly distribute the current over the entire width of the roll, even if, as shown, inductor electrodes 2 are used which extend only over part of the roll width. Thanks to the highly conductive layer 33, it is also possible to use short electrodes whose length is only one fraction of the roll width, e.g. 1/6, is.
  • the illustrated rod-shaped, elongated inductor electrode 2 is known per se in its construction and has been marketed by the Applicant for years.
  • a plurality of emission needles 22 are arranged at regular intervals in a row. Behind each emission needle 22, a protective resistor 23 is connected.
  • the emission needles 22 and protective resistors 23 are advantageously positioned on a printed circuit board, which is inserted into the insulating body 21 and, for example, cast with synthetic resin.
  • the terminal contact 24 of the inductor electrode 2 is connected to a high voltage source.
  • the inductor electrodes may have various shapes.
  • an inductor electrode 102 has a semi-arcuate shape and surrounds a roller 103 at a distance of between about 1 and 50 mm.
  • the insulating body 121 of the inductor electrode 102 in which a series of emission needles 122 are arranged, extends in arc over 180 °.
  • the inductor electrode 102 is preferably placed near one end of the roller 103.
  • the first roller 3 is again a 3-layer roller according to the first embodiment.
  • the second roller 103 is a 1-layer roller with a high or semiconductive outermost layer 132 around a core 131 and is rotatably supported in bearings 135 in the machine frame 9. Both rollers 3, 103 are associated with an inductor electrode 2 for charging, which makes the attachment of a bearing insulation 136 necessary due to the lack of insulating layer in the second roller 103.
  • the flow of current is similar to the first embodiment, which results in the simpler constructed here second roller 103 at best, a less optimal current distribution.
  • the two rollers 3 and 103 are constructed as in the second embodiment, except that the bearings 135 of the second roller 103 are not electrically insulated here.
  • only the first roller 3 is charged by means of an inductor electrode 2. The flow of current takes place from the first roller 3 through the paper strand 1 to the second roller 103 and via the steel core 131 to the machine ground.
  • This device is relatively inexpensive because it requires only one inductor electrode 2 and one high voltage power supply.
  • both rolls 103 are as single-layer rolls with a semiconductive outermost one Layer 132 formed around a core 131 around and rotatably supported in bearings 135 in the machine frame 9. Both rollers 103 is associated with an inductor 2 for charging and the bearings 135 of both rollers 103 are provided with a bearing insulation 136 to prevent current drainage to the machine ground. The current flow is similar to the first embodiment.
  • the first and second rollers 203 are formed as 2-layer rollers having a semiconductive outermost layer 233, an underlying insulating layer 232, and a core 231 and rotatably supported in non-electrically isolated bearings 235 in the machine frame 9. Both rollers 203 are associated with an inductor electrode 2 for charging, whose length should correspond due to the lack of highly conductive layer between the semiconductive outermost layer 233 and the insulating layer 232 respectively approximately the roll width and the paper strand width, respectively, in order to achieve an optimal current distribution.
  • the current flow is similar to the first embodiment.
  • the first roller 203 is again a 2-layer roller according to the fifth embodiment.
  • the second roller 103 is a 1-layer roller having a high or semiconducting outermost layer 132 around a core 131.
  • the bearings 135 of the second roller 103 are provided with a bearing insulation 136 to prevent current drainage to the machine earth.
  • Both rollers 203, 103 is associated with an inductor 2 for charging. The current flow is similar to the first embodiment.
  • the two rollers 203 and 103 are constructed as in the sixth embodiment, except that the bearings 135 of the second roller 103 are not electrically insulated here.
  • only the first roller 203 is charged by means of an inductor electrode 2. The flow of current takes place from the first roller 203 through the paper strand 1 to the second roller 103 and via its steel core 131 to the machine earth.
  • This device is also relatively inexpensive, since it requires only one inductor electrode 2 and one high-voltage power supply.
  • both rollers 3 are constructed as 3-layer rolls according to the first embodiment. Both rollers 3 is associated with an inductor 2 for charging. In contrast to the first exemplary embodiment, however, the two rollers 3 are not the sandwich rollers which merge the paper webs, which are not shown here, but rather rollers arranged further back in the running direction of the paper strand 1. The first roller 3 and the second roller 3 are also slightly offset from one another in the running direction of the paper strand 1. The current flow takes place from the first roller 3 via the paper strand 1 to the second roller 3.
  • This ninth embodiment corresponds largely to the eighth embodiment. The only difference is that the first roller 3 and the second roller 3 are offset even further in the direction of the paper strand 1.
  • the first roller 3 is again a 3-layer roller according to the ninth embodiment.
  • the second roller 303 is a steel roller, which accordingly has a highly conductive, not separately formed outermost layer 331.
  • the first roller 3 and the second roller 303 are offset from each other in the running direction of the paper strand 1. Only the first roller 3 is associated with an inductor 2 for charging. The flow of current takes place from the first roller 3 via the paper strand 1 to the second roller 3 and from this to the machine earth.

Landscapes

  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Electrophotography Configuration And Component (AREA)
  • Replacement Of Web Rolls (AREA)

Claims (16)

  1. Dispositif pour assembler au moins deux bandes de papier (1a-1e) en un ruban de papier (1) avec deux rouleaux sandwichs (3, 103, 203, 303) entre lesquels peuvent passer les bandes de papier (1a-1e) et par lesquels celles-ci peuvent être assemblées en un ruban de papier (1), le dispositif comprenant une paire de rouleaux avec un premier et un deuxième rouleau (3, 103, 203, 303), qui comportent chacun une couche externe conductrice ou semi-conductrice (34, 132, 233, 331), et des moyens de charge étant présents pour charger électriquement au moins la couche externe (34, 132, 233, 331) du premier rouleau (3, 103, 203, 303), caractérisé en ce que les moyens de charge comprennent une électrode d'inducteur (2 ; 102), qui est disposée à distance du premier rouleau (3, 103, 203, 303).
  2. Dispositif selon la revendication 1, caractérisé en ce qu'il comprend une autre électrode d'inducteur (2 ; 102), qui est disposée à distance du deuxième rouleau (3, 103, 203, 303), pour charger électriquement sa couche externe (34, 132, 233, 331) par une charge électrique de signe opposé par rapport à la couche externe (34, 132, 233, 331) du premier rouleau (3, 103, 203, 303).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le premier et/ou le deuxième rouleau (3) comporte une couche externe semi-conductrice (34), une couche conductrice (33) en dessous, une couche isolante (32) en dessous et un noyau (31).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que le premier et/ou le deuxième rouleau (203) comporte une couche externe semi-conductrice (233), une couche isolante (232) directement en dessous et un noyau (231).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le premier et/ou le deuxième rouleau (103) comporte une couche externe semi-conductrice (132) et un noyau directement en dessous (131).
  6. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le premier et/ou le deuxième rouleau (103) comporte une couche externe conductrice (132) et un noyau directement en dessous (131).
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que le deuxième rouleau est un rouleau en acier (303) et la couche externe conductrice (331) est formée par le rouleau en acier (303) lui-même.
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que les paliers (35, 135) du premier et/ou du deuxième rouleau (3, 103, 203, 303) sont isolés électriquement.
  9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que le premier et le deuxième rouleau (3, 103, 203, 303) sont les deux rouleaux sandwichs.
  10. Dispositif selon l'une des revendications 1 à 9, caractérisé en ce que le premier et le deuxième rouleau (3, 103, 203, 303) sont disposés dans le sens de défilement du ruban de papier (1) après les deux rouleaux sandwichs de telle manière que le ruban de papier (1) puisse passer entre eux et s'appuie sur les deux, et en ce que le premier et le deuxième rouleau (3, 103, 203, 303) sont disposés décalés dans le sens de défilement du ruban de papier (1).
  11. Dispositif selon l'une des revendications 1 à 10, caractérisé en ce que l'électrode ou les électrodes d'inducteur (2 ; 102) est ou sont disposées séparés du premier et, le cas échéant, du deuxième rouleau (3, 103, 203, 303) par un intervalle effectif de 1 à 50 mm et de préférence la tension appliquée sur l'électrode ou les électrodes d'inducteur (2 ; 102) est entre 10 kV et 60 kV.
  12. Dispositif selon l'une des revendications 3 à 11, caractérisé en ce que la couche conductrice (33) placée en dessous de la couche externe semi-conductrice (34) est en caoutchouc.
  13. Dispositif selon l'une des revendications 3 à 11, caractérisé en ce que la couche conductrice (33) placée en dessous de la couche externe semi-conductrice (34) est en résine synthétique.
  14. Dispositif selon l'une des revendications 3 à 13, caractérisé en ce que la couche isolante (32) placée en dessous de la couche conductrice (34) est en caoutchouc ou en résine synthétique.
  15. Dispositif selon l'une des revendications 1 à 14, caractérisé en ce que l'électrode d'inducteur est une électrode courte qui s'étend seulement sur une partie de la largeur du premier ou du deuxième rouleau (3, 103, 203, 303).
  16. Dispositif selon l'une des revendications 1 à 14, caractérisé en ce que la longueur de l'électrode d'inducteur correspond approximativement à la largeur du premier ou du deuxième rouleau (3, 103, 203, 303).
EP01810073A 2000-05-16 2001-01-25 Dispositif pour réunir au moins deux bandes de papier en une bande multicouche Revoked EP1285875B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH9712000 2000-05-16
CH9712000 2000-05-16

Publications (2)

Publication Number Publication Date
EP1285875A1 EP1285875A1 (fr) 2003-02-26
EP1285875B1 true EP1285875B1 (fr) 2006-03-29

Family

ID=4550998

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01810073A Revoked EP1285875B1 (fr) 2000-05-16 2001-01-25 Dispositif pour réunir au moins deux bandes de papier en une bande multicouche

Country Status (4)

Country Link
EP (1) EP1285875B1 (fr)
AT (1) ATE321720T1 (fr)
DE (2) DE20101202U1 (fr)
ES (1) ES2260185T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10321599A1 (de) * 2003-05-13 2004-12-30 Windmöller & Hölscher Kg Wickelvorrichtung mit elektrostatischen Auflademitteln und Verfahren zum Festlegen mehrlagiger Folie
FR2883267B1 (fr) * 2005-03-18 2007-06-08 Thibeau Soc Par Actions Simpli Procede et systeme de transport d'une bande de non-tisse avec maintien electrostatique dans au moins une zone de dimension inferieure a la largeur de ladite bande
NL1029461C2 (nl) * 2005-07-07 2007-01-09 Simco Nederland Werkwijze en inrichting voor het bijeenhouden van een elektrisch niet-geleidende stapel van voorwerpen.
DE102005042438A1 (de) 2005-09-07 2007-03-08 Man Roland Druckmaschinen Ag Vorrichtung zum Zusammenführen mehrerer Bedruckstoffbahnen
US8559156B2 (en) 2008-06-03 2013-10-15 Illinois Tool Works Inc. Method and apparatus for charging or neutralizing an object using a charged piece of conductive plastic

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2754179C2 (de) * 1977-12-06 1984-09-20 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Einer Rollenrotationsdruckmaschine nachgeschaltete Bearbeitungsstation mit einer Bahnführungseinrichtung
CH659035A5 (de) * 1980-05-06 1986-12-31 Walter Spengler Verfahren zum zusammentragen von buendeln aus elektrisch isolierenden bogenfoermigen haelftig gefalteten substratmaterialien.
JPH02185498A (ja) * 1989-01-13 1990-07-19 Abisare:Kk プロッタの作図用紙保持方法及びその装置
DE29723999U1 (de) * 1997-04-02 1999-12-09 Eltex Elektrostatik Gmbh Vorrichtung zum elektrostatischen Aufladen

Also Published As

Publication number Publication date
DE50109375D1 (de) 2006-05-18
DE20101202U1 (de) 2001-05-10
EP1285875A1 (fr) 2003-02-26
ATE321720T1 (de) 2006-04-15
ES2260185T3 (es) 2006-11-01

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