EP1457444B2 - Maschine zum Ineinanderfalten einer Bahn oder von Blättern mit einer Vakuumtransportwalze - Google Patents

Maschine zum Ineinanderfalten einer Bahn oder von Blättern mit einer Vakuumtransportwalze Download PDF

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Publication number
EP1457444B2
EP1457444B2 EP04003595.8A EP04003595A EP1457444B2 EP 1457444 B2 EP1457444 B2 EP 1457444B2 EP 04003595 A EP04003595 A EP 04003595A EP 1457444 B2 EP1457444 B2 EP 1457444B2
Authority
EP
European Patent Office
Prior art keywords
interfolding
rollers
holes
roller
suction
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
Application number
EP04003595.8A
Other languages
English (en)
French (fr)
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EP1457444B1 (de
EP1457444A3 (de
EP1457444A2 (de
Inventor
Alessandro De Matteis
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.)
MTC Macchine Trasformazione Carta SRL
Original Assignee
MTC Macchine Trasformazione Carta SRL
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Filing date
Publication date
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Priority claimed from EP03425091A external-priority patent/EP1449799A1/de
Application filed by MTC Macchine Trasformazione Carta SRL filed Critical MTC Macchine Trasformazione Carta SRL
Priority to EP04003595.8A priority Critical patent/EP1457444B2/de
Publication of EP1457444A2 publication Critical patent/EP1457444A2/de
Publication of EP1457444A3 publication Critical patent/EP1457444A3/de
Publication of EP1457444B1 publication Critical patent/EP1457444B1/de
Application granted granted Critical
Publication of EP1457444B2 publication Critical patent/EP1457444B2/de
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
    • B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for 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
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/24—Interfolding sheets, e.g. cigarette or toilet papers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/33—Rotary suction means, e.g. roller, cylinder or drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/36—Means for producing, distributing or controlling suction
    • B65H2406/361—Means for producing, distributing or controlling suction distributing vacuum from stationary element to movable element
    • B65H2406/3614—Means for producing, distributing or controlling suction distributing vacuum from stationary element to movable element involving a shoe in sliding contact with an inner section of the periphery of a rotating element

Definitions

  • the present invention relates to the field of machines for converting paper and similar products, and in particular it relates to an interfolding machine of a web or sheet of paper.
  • the invention relates to an interfolding machine having a paper conveying roller having circumferentially a plurality of holes which, connected to a vacuum system, allow the sheet or web of paper to adhere on their surface.
  • such systems are used to provide the main operations of cutting the paper, of transferring it quickly from a roller to another, of final folding the paper same.
  • the machines are normally equipped either with mechanical clamps or with pneumatic suction means.
  • the air suction systems owing to a certain vacuum grade created within the rollers, cause the processed paper to adhere on the roller surface by means of rows of suction holes.
  • a paper conveying roller 101 in known art, the vacuum is transmitted through a plurality of longitudinal channels 102 into roller 101, causing the paper 120 to adhere selectively to the roller surface same by means of a plurality of holes 103.
  • holes 103 are arranged according to longitudinal rows with respect to the axis 104 of the cylinder (transversal with respect to the paper) since the vacuum is made selectively by distributor means. This causes a division of the roller surface into paper suction fields, i.e. where the rows of holes are enabled for suction, and into fields where the processed paper is instead freed from the roller for being for example transferred onto another roller or folded, i.e. the respective rows of holes are not enabled for suction.
  • the paper conveying roller is normally coupled, at an end thereof, to a bell-shaped vacuum distributor element 110 to it co-axial but whose rotation is impeded by means of suspension on ball bearings.
  • the vacuum distributor 110 is equipped with an inlet 111 connected to the suction system of the machine and communicating with a curved opening 112 determined on the distributor same. More in detail, the curved opening 112 extends for a certain angle and, during the rotation of the roller about its own axis, selectively communicates with longitudinal channels 102 and then with the respective rows of holes 103. This way, a portion of roller surface (hatched area in figure 1 ) is obtained in which the sheet or the web of paper is captured by suction and adheres on the roller surface.
  • channels 102 are at atmospheric pressure except from when they are in communication with the vacuum distributor.
  • This causes, however, the row of holes 103, which is enabled to suction by alignment with curved opening 112, to start the suction of the sheet on the roller surface 101 only after that the air present in the respective longitudinal channel 102 has been removed. Therefore, there is a delay between the beginning of the suction in channel 102 and the moment where the portion of roller surface located at holes row 103 can actually start the suction of the paper, owing to the vacuum inertia for the presence of air channel 102 and the propagation time of the vacuum for all the row of holes length. Furthermore, as soon as channel 102 is not more enabled for suction, even if there is a delay of the vacuum to disappear, then, in any case, the vacuum is lost and the channel returns to the atmospheric pressure.
  • a not efficient suction by the holes can affect the successive operations of the machine causing paper jamming and stop of production.
  • the maximum air flow rate is limited.
  • paper dragging rollers also exist formed by a fixed cylinder that form a longitudinal chamber, about which a concentric roller rotates formed by a inner stiff tubular shell having a plurality of holes, and an outer resilient tubular shell, having a plurality of deformable holes.
  • a concentric roller rotates formed by a inner stiff tubular shell having a plurality of holes, and an outer resilient tubular shell, having a plurality of deformable holes.
  • the deformable holes When contacting the paper the deformable holes are open and bring into communication the paper with the holes of the inner shell and the suction chamber, preventing the roller from sliding with respect to the paper.
  • the sealing ability of the holes however is limited to the contact with a web of paper and with a certain pressure, whereby this type of roller is unsuitable for applications with sheets of paper. Furthermore, it is suitable only for narrow fields of suction.
  • the document US 3037557 describes a vacuum roller that can be used in printing presses and coating apparatus, in paper making machines, for stretching a web of paper in order to remove the humidity surplus, as well as in machines for laminating a film thin. It comprises a fixed inner body and an outer cylinder having a plurality of longitudinal radial holes capable of rotating with respect to the inner body.
  • the fixed inner body has inside a suction chamber communicating with vacuum means and having a peripheral opening.
  • sectors are provided having each friction seals that slide against the inner wall of the outer cylinder.
  • the seals define a zone communicating with the suction chamber through said opening and that transmit then a vacuum to the corresponding holes of the cylindrical body.
  • Such a roller is not suitable for interfolding machines as the present invention. In fact, interfolding machines must move with precision a web of paper for all the length of the roller, even 2-3 metres, and such a division into sectors is not feasible.
  • GB691990 discloses a means for feeding sheets in a printing-machine comprising a hollow rotatable cylinder connected to a source of suction, a number of peripheral holes leading to the interior of the cylinder, and an automatically-controlled tubular member which is slotted and adapted to establish communication between the holes and the interior of the cylinder, or with the atmosphere, respectively, according to whether a sheet is to be held on or released from the cylinder.
  • EP0982256 discloses a method for the production of interfolded stacks formed by a plurality of sheets, The method comprises the steps of transversally cutting or tearing sheets obtained from at least one web and offset with respect to one another so that a sequence of offset sheets is created; passage of the sheets on folding rollers which comprise sucking means for the alternate holding of the sheets in order to obtain an interfolded disposition; formation of a continuous interfolded stack downstream of the folding rollers.
  • WO91/1961 discloses a vacuum roll for paper handling machine, such as is used in interfolding paper machinery.
  • the vacuum roll comprises an outer rotating roll member which rotates around an internally coaxial static vacuum feed. Both the length of time for which vacuum is applied, and the part of the circle of rotation over which it is applied, can be varied from outside the machine and whilst the machine is running.
  • a cross sectional view is shown of a roller 1 used for conveying a web or sheet of paper 20 for an interfolding machine. It comprises a first outer cylindrical tubular body 2, equipped with a plurality of radial holes 3 arranged according to substantially longitudinal rows, capable of rotating with respect to a second inner fixed body 4, co-axial to the former and connected to a suction system not shown.
  • the second body 4 which as shown in the embodiments of figures 3 and 4 has tubular cylindrical geometry like first body 2, has a plurality of apertures 5 and two radial boards 7 at opposite sides with respect to apertures 5.
  • first cylindrical tubular body 2, radial boards 7 and the external surface of second tubular body 4 define a suction chamber 6 that, during the relative rotation of the two bodies, brings selectively in communication some rows of holes 3 of first cylindrical tubular body 2 with the apertures 5 of second tubular body 4 and then with the suction system of the machine. Therefore, a web or sheet of paper 20 adheres to the external surface of first body 2 only in the portion P 1 P 2 of the surface set between the rows of holes 3' that communicate with the suction chamber ( figure 4 ).
  • the apertures 5 made on the surface of second tubular body 4 are arranged longitudinally and are enough to allow a quick outlet of the air present in holes 3' that in turn overlap to the suction chamber 6. This is possible also because chamber 6 is fixedly kept at a determined vacuum grade.
  • radial boards 7, between which the apertures 5 extend are arranged radially for all the length of second cylindrical tubular body 4 and are have high sealing capability of the suction chamber from the remaining space comprised between bodies 2 and 4.
  • radial boards having a fixed portion 10, integral to second inner tubular body 4 and forming a longitudinal channel, and a movable portion 7 that engages with fixed portion 10 and pushes elastically against the inner surface of first tubular body 2 urged by springs 9.
  • Springs 9 can be located, as in the case of figures 3 and 4 , about pins 11 which are constrained in a housing within fixed portion 10.
  • rollers 1 are provided as above described that work in cooperation with folding rollers 40.
  • the unit works for example in the way described in EP0982255 or in EP0982256 in the name of the same applicant.
  • rollers 40 Differently from rollers 1, rollers 40 have six couples of rows, where three couples of rows of holes spaced 120° capture the end of a sheet, and other three couples of rows of holes spaced 120°, shifted 60° with respect to the former, capture through the central portions of a sheet, the end of a second overlapped sheet and ready for being interfolded.
  • the first three couples of holes must be enabled for suction between two consecutive cuts, for a sector between the point of contact of rollers 1 with rollers 40 up to the contact between the two opposite rollers 1, whereas the other three couples of holes must be enabled for suction between the contact between the two rollers 40 and the point where the fold is made.
  • rollers 40 are shown in figure 5 having a "mixed" structure as a combination of a roller of prior art and a roller 1 according to the invention. More in detail:
  • a roller can be made that enables to suction three couples of rows of holes all with a system according to the invention.
  • the inner second body may have three radial boards, forming three chambers, one not enabled to suction and two enabled to suction with a different vacuum grade.

Landscapes

  • Advancing Webs (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Replacement Of Web Rolls (AREA)

Claims (4)

  1. Einfaltmaschine umfassend eine Einfalteinheit, umfassend Förderwalzen (1), die in Zusammenwirkung mit Faltwalzen (40) arbeiten, wobei die Faltwalzen (40) dazu geeignet sind, eine In Papierbahn oder -bogen von den Förderwalzen (1) bis zu dem Berührungspunkt zwischen zwei Faltwalzen (40) mithilfe eines Saugsystems zu erfassen, wobei die Einfaltwalzen (40) zum Bewirken des Durchgangs der Bahn oder des Bogens von einer Einfaltwalze (40) zu eine andere Faltwalze angeordnet sind,
    die Einfaltwalzen umfassend:
    - einen zylindrischen röhrenförmigen Körper (2), der imstande ist, um eine Drehachse zu drehen, wobei der zylindrische röhrenförmige Körper (2) mehrere radiale Löcher (3) aufweist, die gemäß im Wesentlichen längs verlaufenden Reihen angeordnet sind,
    - eine Kammer (6) in der Walze (40), die sich über ihre gesamte Länge erstreckt und immer an ein Saugsystem angeschlossen ist, wobei die Kammer (6) immer unter Vakuum ist,
    - ein Zwischenschaltungsmittel (7) zwischen der Kammer (6) und zumindest einer Reihe von radialen Löchern (3), das zum selektiven Verbinden der Kammer (6) mit der zumindest einen Reihe von Löchern (3) an bestimmten Winkelpositionen der Walze (40) zum Vorsehen einer Saugwirkung auf den Bogen oder die Bahn von verarbeitetem Papier (20) nur an diesen Positionen geeignet ist;
    wobei die Kammer (6) durch einen Hohlkörper (4) definiert ist, der in dem zylindrischen röhrenförmigen Körper (2) befestigt ist, wobei das Zwischenschaltungsmittel
    - zwei radiale Platten, die sich vom Hohlkörper (4) über die gesamte Länge der Walze (40) zum Definieren der in der Walze (40) sich befindenden Saugkammer radial erstrecken, wobei zumindest eine Öffnung zwischen den Platten vorhanden ist, die die Kammer (6) mit dem inneren Raum des seinerseits mit den Saugsystem verbunden Hohlkörpers (4) verbindet;
    - Dichtelemente (8), die an den Innenflächen des zylindrischen röhrenförmigen Körpers (2) entlang gleiten
    umfasst.
  2. Einfaltmaschine nach Anspruch 1, wobei die Einfaltwalzen (40) sechs Paare von Lochreihen aufweisen, wobei drei Paare von Lochreihen 120° beabstandet sind und dazu geeignet sind, das Ende eines Bogens zu erfassen, und andere drei Paare von Löchern 120° Grad beabstandet sind, bezüglich der Ersteren um 60° versetzt sind und dazu geeignet sind, durch die Mittelabschnitte eines Bogens das Ende eines zweiten, überlagerten und faltbereiten Bogens zu erfassen.
  3. Einfaltmaschine nach Anspruch 2, wobei die ersten drei Paare von Löchern zum Saugen zwischen zwei aufeinanderfolgenden Einschnitten für einen Sektor zwischen einem Berührungspunkt von Förderwalzen (1) mit Einfaltwalzen (40) bis zu einem Kontakt zwischen den Einfaltwalzen (40) aktiviert sind, während die anderen drei Paare von Löchern zum Saugen zwischen dem Kontakt zwischen den zwei Einfaltwalzen (40) und einem Punkt, an dem die Faltung hergestellt wird, aktiviert sind.
  4. Einfaltmaschine nach Anspruch 1, wobei jede radiale Platte einen starren Abschnitt umfasst, wodurch eine Führung ausgebildet ist, die längs bezüglich der Förderwalze angeordnet ist, in welcher eine Stange radial getrieben elastisch an die Innenfläche des ersten zylindrischen röhrenförmigen Körpers gleitet, wodurch das gleitende Dichtelement ausgebildet ist.
EP04003595.8A 2003-02-18 2004-02-18 Maschine zum Ineinanderfalten einer Bahn oder von Blättern mit einer Vakuumtransportwalze Expired - Lifetime EP1457444B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04003595.8A EP1457444B2 (de) 2003-02-18 2004-02-18 Maschine zum Ineinanderfalten einer Bahn oder von Blättern mit einer Vakuumtransportwalze

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP03425091A EP1449799A1 (de) 2003-02-18 2003-02-18 Walze zum Fördern einer Papierbahn oder eines Papierblattes in einer Papierverarbeitungsmaschine und dabei erzieltes Transportverfahren
EP03425091 2003-02-18
EP04003595.8A EP1457444B2 (de) 2003-02-18 2004-02-18 Maschine zum Ineinanderfalten einer Bahn oder von Blättern mit einer Vakuumtransportwalze

Publications (4)

Publication Number Publication Date
EP1457444A2 EP1457444A2 (de) 2004-09-15
EP1457444A3 EP1457444A3 (de) 2005-10-26
EP1457444B1 EP1457444B1 (de) 2011-11-09
EP1457444B2 true EP1457444B2 (de) 2018-10-24

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ID=32773676

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Application Number Title Priority Date Filing Date
EP04003595.8A Expired - Lifetime EP1457444B2 (de) 2003-02-18 2004-02-18 Maschine zum Ineinanderfalten einer Bahn oder von Blättern mit einer Vakuumtransportwalze

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Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI455863B (zh) * 2012-07-04 2014-10-11 Snu Precision Co Ltd 片材導向系統
ITUB20159653A1 (it) * 2015-12-23 2017-06-23 Mtc Macch Trasformazione Carta S R L Unita? di avanzamento di nastri, o fogli di carta in macchine per la trasformazione della carta e macchina piegatrice e impilatrice che adotta tale unita? di avanzamento
ITUA20162080A1 (it) * 2016-03-29 2017-09-29 United Converting Srl Struttura di rullo aspirato per macchine interfogliatrici.
IT201600077916A1 (it) * 2016-07-25 2018-01-25 Universal Tissue Tech S R L Rullo piegatore e macchina interfogliatrice impiegante detto rullo
IT201800007517A1 (it) 2018-07-26 2020-01-26 Mtc - Macch Trasformazione Carta Srl Rullo di aspirazione di tipo perfezionato per macchine per la trasformazione della carta
IT201900001579A1 (it) 2019-02-04 2020-08-04 Mtc Macch Trasformazione Carta S R L Unita’ di piega, o interfogliatura, di fogli di carta per una macchina per la trasformazione della carta
NL2024951B1 (en) * 2020-02-20 2021-10-13 Vmi Holland Bv Applicator roll, tire component servicer and method for applying a strip to a drum
CN111498571B (zh) * 2020-05-20 2024-09-20 佛山市南海区德昌誉机械制造有限公司 一种生活用纸加工的多腔辊体
WO2022107057A1 (en) 2020-11-20 2022-05-27 Körber Tissue Fold S.R.L. Suction roll of a web, or sheet, of paper in a paper converting machine
IT202100010283A1 (it) 2021-04-22 2022-10-22 Koerber Tissue Fold S R L Unita’ di piega, o interfogliatura, di fogli di carta in una macchina per la trasformazione della carta
IT202100011531A1 (it) 2021-05-06 2022-11-06 Koerber Tissue Fold S R L Unita’ di piega, o interfogliatura, di fogli di carta in una macchina per la trasformazione della carta
IT202100012539A1 (it) 2021-05-14 2022-11-14 Koerber Tissue Fold S R L Macchina per la produzione di prodotti laminari in materiale cartaceo, in particolare pacchi di tovaglioli, fazzoletti, o simili prodotti e relativo metodo di produzione

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB691990A (en) * 1950-03-27 1953-05-27 Winkler Fallert & Co Maschf Improvements in and relating to sheet-feeding devices for printing machines
GB919932A (en) * 1960-07-06 1963-02-27 Time Inc Rotary vacuum cylinder
US4202542A (en) * 1977-12-01 1980-05-13 International Business Machines Corporation Apparatus for handling flexible sheet material of different sizes
DE2857766C2 (de) * 1978-03-20 1984-05-03 Gerhard 4800 Bielefeld Klemm Vorrichtung zum Transport einer Bahn aus Luftundurchlässigem Werkstoff in einer Druckmaschine
FR2538797B1 (fr) * 1982-12-30 1986-02-14 Hotchkiss Brandt Sogeme Dispositif d'empilage d'objets plats
JPS59131024A (ja) * 1983-01-17 1984-07-27 Kanai Hiroyuki ウエプレヤ用チンロ−ル
CH665168A5 (de) * 1983-09-12 1988-04-29 Paul Aschwanden Saugwalze zum foerdern von bahn- oder bogenfoermigem material.
CA2019183A1 (en) * 1990-06-18 1991-12-18 Mark Belair Paper converting machine vacuum roll
ES2318867T3 (es) * 1998-08-21 2009-05-01 M T C - Macchine Trasformazione Carta S.R.L. Metodo de interplegado de material de hoja no permeable o no lo bastante permeable al aire y maquina para llevar a cabo tal metodo.
DE10012743C2 (de) * 2000-03-16 2002-01-31 Ditzel Gmbh Transportwalze, insbesondere zum Führen von schmalen Papierbahnen in einer Zigarettenmaschine
US6488194B1 (en) * 2000-08-30 2002-12-03 C.G. Bretting Manufacturing Company, Inc. Vacuum timing device and method for producing the same

Also Published As

Publication number Publication date
EP1457444B1 (de) 2011-11-09
EP1457444A3 (de) 2005-10-26
EP1457444A2 (de) 2004-09-15

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