EP1611042B1 - Falzzylinder für blattgut - Google Patents

Falzzylinder für blattgut Download PDF

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Publication number
EP1611042B1
EP1611042B1 EP04721983A EP04721983A EP1611042B1 EP 1611042 B1 EP1611042 B1 EP 1611042B1 EP 04721983 A EP04721983 A EP 04721983A EP 04721983 A EP04721983 A EP 04721983A EP 1611042 B1 EP1611042 B1 EP 1611042B1
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EP
European Patent Office
Prior art keywords
cylinder
side flanges
cage
working surface
covering
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
EP04721983A
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English (en)
French (fr)
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EP1611042A1 (de
Inventor
Renzo Tommasi
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.)
TAU MACHINES Srl
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TAU MACHINES Srl
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Publication date
Application filed by TAU MACHINES Srl filed Critical TAU MACHINES Srl
Priority to PL04721983T priority Critical patent/PL1611042T3/pl
Priority to SI200431322T priority patent/SI1611042T1/sl
Publication of EP1611042A1 publication Critical patent/EP1611042A1/de
Application granted granted Critical
Publication of EP1611042B1 publication Critical patent/EP1611042B1/de
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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
    • B65H45/16—Rotary folders
    • B65H45/162—Rotary folders with folding jaw cylinders
    • 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
    • B65H45/28—Folding in combination with cutting

Definitions

  • the present invention relates to the field of folding machines for sheet-like material, in particular paper, tissue paper or similar items, for the production of multi-layer paper articles such as towels, handkerchiefs, and napkins. More specifically, it concerns a cylinder and a device for the execution of transverse fold lines on a material provided in web form, possibly already longitudinally folded.
  • such devices comprise a couple of counter-rotating cylinders, arranged with parallel axes, thereby resulting substantially tangent with respect to each other.
  • a first cylinder receives the paper web material tangentially, and cooperates with a cutting roller for dividing the material into distinct sheets. The cut is achieved along a generatrix of mutual tangency between the cutting roller and the first cylinder, in turn mutually parallel and counter-rotating.
  • the operative surface of the cutting roller has at least two radially-projecting cutters, arranged along respective generatrices, circumferentially equally spaced.
  • the operative surface of the first cylinder exhibits a corresponding distribution of counter-cutting grooves, such that following to the coordinated rotation between the roller and the cylinder, the grooves and the cutters match together in the tangency area, carrying out the cut of the material.
  • the paper material is held on the surface of the first cylinder by a vacuum system.
  • the material cut in sheets is transported towards the tangency area with the second cylinder, the area in which the folding along a transverse line, i.e. parallel to that of the cut, is carried out.
  • the folding is a result of the concurrent action of radial deviation devices and gripping devices of the paper material, distributed along the working surfaces of the first cylinder (in alternating position with the counter-cutting grooves) and of the second cylinder, respectively.
  • the rotation of the two cylinders is mutually coordinated, so that a deviation device and a gripping device correspond in the tangency area, on opposite sides of the sheet of paper.
  • the latter upon operation of a deviation device, is in practice slightly raised from the surface of the first cylinder, and tucked in the gripping device, which thus become capable of grasping the material.
  • a known device which, among many others, adopts a solution of this type is for example illustrated in U.S. Patent No. 4,822,328 .
  • the second cylinder gripping the paper sheet, transports it, overcoming the resistance of the first cylinder's vacuum system.
  • the sheet is thus arranged, transversely folded, on the surface of the second cylinder, from which it may be withdrawn for possible subsequent treatments, or taken immediately for packaging.
  • the present invention aims at also overcoming the above-described problems, providing a folding cylinder for sheet-like material which permit to vary the position of the folding line substantially as desired, in particular to achieve with a single cylinder the folding arrangements requested by all the main typologies of paper articles on the market.
  • a folding apparatus has a general configuration corresponding to that already provided for in the known art, briefly delineated in the introductive part of the present description.
  • a first folding cylinder 1 is visible, tangentially cooperating at one side with a cutting roller 3, and at the opposite side with a second folding cylinder 2.
  • the cylinders 1, 2 and the cutting roller 3 rotate integrally to respective shafts 1a, 2a, 3a, revolvingly supported at their ends by a frame 10 ( figures 4 and 5 ).
  • a motor for operating the roller 3 a motor, not shown, is provided.
  • the operation is driven to the first cylinder through a first gear drive 12, working between the shafts 3a and 1a, outside the frame 10 (as once again can be seen in figures 4 and 5 ).
  • the drive between the first and second folding cylinder will be described later on.
  • the web material to be cut and folded is indicated at M in figures 2 and 3 , and is fed to the tangency point between the cutting roller 3 and the first folding cylinder 1, with the assistance of a deviation roller 4.
  • the first folding cylinder which in any case will be described in detail further on, comprises two radial deviation devices 7, having the shape of tucker blades 7a, extending in intermediate position between the grooves 6.
  • the devices 7 make use of technical solutions of known type, and are not therefore described in detail.
  • the first cylinder 1 is internally hollow, defining a central chamber 1b which communicates with the outside via a distribution of radial holes 8a, 8b formed in the working surface of the cylinder.
  • a suction is exerted through the holes 8a, 8b, for holding and transporting the web material M during and after the execution of the cut, as represented in figures 2 and 3 .
  • a sheet F1 on the first cylinder 1 is completely cut and transported to the folding area.
  • Suction means are provided to obtain a vacuum within the chamber 1b, pneumatically communicating with the same chamber by way of the shaft 1a, hollow in its turn.
  • the second folding cylinder 2 too has overall characteristics substantially referrable to that already known, with four gripping devices 9, equally spaced along the working surface, adapted to cooperate with the deviation devices 7 as already mentioned above.
  • the step is identifiable in which a deviation device 7 and a gripping device 9 cooperate to perform the folding of the sheet F1, while a sheet F2 (already folded by the gripping device that has operated previously) has been conveyed to the second cylinder 2.
  • Figure 3 refers instead to an immediately subsequent step, in which the sheet F1 is leaving the first cylinder 1.
  • a cam 11 is provided, visible in figures 4 and 5 , integral with the frame 10 and coaxial with the shaft 2a.
  • the devices 9 have in fact rotating shafts 9a whose ends project axially from the cylinder 2 and come into contact with the cam 11 through respective driving arms 9b.
  • the cam 11 is shaped in such a way that it brings the shafts 9a in a gripping position, along a predetermined arc of rotation of the cylinder 2, evidently corresponding to the sector where the transfer of the sheets from the first folding cylinder 1 occurs.
  • first folding cylinder 1 has a structure in two parts, angularly displaceable with respect to each other in an adjustable manner around the rotation axis of the cylinder.
  • a first part consists of the actual cylinder body, indicated at 13 in figure 1 .
  • the body 13 is integral with the shaft 1a and comprises, in addition to two side flanges 13a lying on planes normal to the rotation axis, two cylindrical sectors 13b which extend axially between the flanges 13a, thereby defining only a part of the working surface of the cylinder.
  • the two sectors 13b are located over two symmetric arcs in correspondence with respective grooves 6, that are formed precisely in the sectors together with a group of suction holes 8a. If the circumferential length of the body 13 is followed, the two sectors 13b are thus alternated with two passages 13c, symmetric in their turn, which open on to the inner chamber 1b of the cylinder. In correspondence with the passages 13c, shaped slots 13d are formed in the side flanges 13a, so that a butterfly profile is conferred to the flanges, as can be appreciated in figures 2 and 3 .
  • a second cylinder part is arranged, in the form of a cage 14 ( figure 1 ), supported by the shaft 1a so that the former is free for rotation with respect to the latter.
  • the cage 14 comprises in turn two side flanges 14a which externally overlap the side flanges 13a of the body 13 and centrally define the insertion seats for the shaft 1a.
  • the flanges 14a have a complete circular figure, with the same diameter of the flanges 13a, obstructing thus the slots 13d.
  • slots 15 are also formed, of curved shape which follows the profile of the flange edge, and arranged in an equally spaced manner along such edge.
  • the slots 15 slidingly house respective screws 16 which, inserted axially from the outside, engage within threaded holes formed in the relevant flange 13a of the body 13.
  • the flanges 13a and 14a are connected to each other due to the coordinated tightening of the screws 16; on the other hand, by removing said tightening the flanges are capable of performing mutual angular displacements.
  • Two sleeves 17 project outside from -and integrally with- the two side flanges 14a of the cage 14.
  • the sleeves 17 coaxially overlay the shaft 1a, being in turn free from it.
  • the sleeves 17 radially expand, forming respective gears 18 which engage with corresponding gears 19 of the second folding cylinder 2. In this manner, the second drive of the rotational operation, i.e. that from the first to the second folding cylinder, is ensured.
  • each covering comprises a gutter-like elongated member 14b, passing within the related passage 13c through the slots 13d, and housing a radial deviation device 7.
  • the width of the elongated member 14b is considerably lower than the angular extension of the passage (and of the slots), so that the above-mentioned mutual angular displacement between the flanges 13a and 14a may take place; the displacement corresponds precisely to a translation of the elongated member along the circumference of the cylinder.
  • the obstruction of the passage 13c is completed by two projections 14c transversely extending from the elongated member 14b.
  • the projections 14c are arc-shaped in accordance with the curvature of the cylindrical sectors 13b of the body 13, to which they overlap in order to provide a continuity to the working surface of the cylinder.
  • the transversal extension (if the longitudinal axis of the elongated member is taken as a reference; or else circumferential if referred to the overall configuration of the cylinder) of the projections 14c is such that said overlapping, and therefore the continuity of the working surface, is assured along the entire angle of displacement permitted to the cage 14.
  • a group of holes 8b is formed in the projections 14c, in order to guarantee the necessary suction also in the portion of the working surface defined by such projections.
  • the distribution of the holes 8b on the projections 14c, in relation to that of the holes 8a on sectors 13b, is such to permit mutual correspondence in the area in which the projections and the sectors overlap, thus assuring the suction in such area.
  • the position of the elongated members 14b and consequently of the deviation devices 7 may be adjusted, with respect to the counter-cutting grooves 6.
  • Such adjustment corresponds to a translation of the folding line on the folded sheet, approaching to or moving away from the rear cut edge of the sheet.
  • the adjustment is obtained upon the untightening of the screws 16, so that the cage 14 can be displaced angularly with respect to the body 13 around the rotation axis of the cylinder.
  • Such length shall be established so as to assure the desired extent of adjustment range.
  • the invention it is therefore possible, with a single folder apparatus and without the need to replace any components, to vary the position of the folding line with respect to the two cut edges, thereby satisfying the most various production needs.
  • a sheet with an off-center folding may be obtained, with flaps having a length which may be varied as desired.
  • the central position of the folding with respect to the cut edges may be maintained, even when the length of the sheet varies, another result clearly precluded to the known apparatus.
  • the sheet length is easily modifiable by holding in greater or lesser manner the feed of the material M upstream of the first cylinder 1, and therefore causing the material to slide over the surface of the cylinder between the execution of the two cuts.
  • the cylinder according to the invention even if usable in a particularly advantageous manner in an apparatus such as the one referred to above, may also be effectively used as a component of structures with different overall characteristics, if there is a similar need for a position adjustment of the radial deviation means.
  • the cylinder may comprise counter-cutting grooves 6, and deviation devices 7, in number greater or lesser than two.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (7)

  1. Faltzylinder (1) für blattähnliches Material (M), enthaltend: eine im Allgemeinen zylindrische Arbeitsoberfläche; wenigstens eine Gegenschnittnut (6), die in der Arbeitsoberfläche zum Zusammenarbeiten mit einem Schneider (5) einer Schneidwalze (3) gebildet ist, um das Material (M) in Bögen (F) zu schneiden; wenigstens eine Radialablenkvorrichtung (7) zum Zusammenarbeiten mit einer Greifvorrichtung (9) eines zweiten Faltzylinders (2), um die Bögen von der Arbeitsoberfläche abzulenken und sie quer zu falten; eine Mehrzahl von Löchern (8a, 8b), die in der Arbeitsoberfläche gebildet sind, um ein Saugen auszuüben, das geeignet ist, um das Material (M) zu halten und die Bögen (F) über die Arbeitsoberfläche zu transportieren; und erste (12) und zweite (18) Antriebseinrichtungen, die geeignet sind, um jeweils mit komplementären Antriebseinrichtungen in der Schneidwalze (3) und in dem zweiten Faltzylinder (2) in Eingriff zu sein, um eine Drehbetätigung zu erhalten und weiter zu geben, welcher Zylinder zwei Teile (13, 14) enthält, die in Kooperation mit der Arbeitsoberfläche die wenigstens eine Gegenschnittnut (6) definieren, und welche ersten Antriebseinrichtungen (12) mit einem ersten der Teile (13) in Verbindung sind, während die wenigstens eine Radialablenkvorrichtung (7) und die zweiten Antriebseinrichtungen (18) mit einem zweiten (14) der Teile des Zylinders (1) in Verbindung sind, welche ersten und zweiten Teile (13, 14) winkelmäßig bezüglich einander um die Zylinderachse verstellbar sind, wobei auch Verriegelungseinrichtungen (16) zum gegenseitigen Verriegeln der Teile (13, 14) vorgesehen sind, welche Verriegelungseinrichtungen lösbar sind, um die gegenseitige winkelmäßige Verstellung zu gestatten, wobei der Zylinder dadurch gekennzeichnet ist, dass die ersten und zweiten Teile (13, 14) jeweils aus einem Körper (13), der integral mit einer zentralen Drehwelle (1a) des Zylinders (1) ist, die koaxial zur Zylinderachse ist, und einem Käfig (14) bestehen, der koaxial und extern zum Körper (13) angeordnet ist, welcher Körper (13) wenigstens einen zylindrischen Sektor (13b), der einen Teil der Arbeitsoberfläche definiert, in welcher die wenigstens eine Gegenschnittnut (6) ausgebildet ist und Löcher (8a) mit einer Vakuuminnenkammer (1b) kommunizieren, und wenigstens einen Durchgang (13c) enthält, der mit der Vakuuminnenkammer (1b) kommuniziert; welcher Käfig (14) wenigstens eine bogenförmige laminare Abdeckung ((14b, 14c) und Löcher (8b) in der Abdeckung enthält, die mit der Vakuuminnenkammer (1b) kommunizieren, welche Abdeckung den wenigstens einen Durchgang (13c) versperrt und teilweise den wenigstens einen Sektor (13b) überlappt, wobei entsprechende Gruppen der Löcher (8a, 8b), die in dem Sektor und der Abdeckung ausgebildet sind, einander in dem Überlappungsbereich gegenseitig entsprechen.
  2. Zylinder nach Anspruch 1, wobei die Abdeckung (14b, 14c) ein axial gestrecktes, rinnenartiges Glied (14b) enthält, das innerhalb des wenigstens einen Durchgangs (13c) angeordnet ist und die wenigstens eine Radialablenkvorrichtung (7) aufnimmt, wobei die Umfangslänge des Gliedes (14b) wesentlich geringer als die winkelmäßige Öffnung des wenigstens einen Durchgangs (13c) ist, wodurch die gegenseitige winkelmäßige Verstellung zwischen dem Körper (13) und der Abdeckung (14b, 14c) gestattet ist, welche Abdeckung auch zwei Vorsprünge (14c) enthält, die transversal von dem Glied (14b) und bogenförmig gemäß der Krümmung des wenigstens einen zylindrischen Sektors (13b) des Körpers (13) vorstehen, mit welchem sie überlappen, wobei die Umfangslänge der Vorsprünge (14c) derart ist, um die Überlappung und somit die Kontinuität der Arbeitsoberfläche längs des gesamten Verstellwinkels, der dem Käfig (14) gestattet ist, sicher zu stellen.
  3. Zylinder nach Anspruch 2, wobei der Körper (13) zwei im Allgemeinen kreisartige Seitenflansche (13a) enthält, die auf Ebenen orthogonal zu der Zylinderachse liegen, worunter sich der wenigstens eine zylindrische Sektor (13b) axial erstreckt, welcher Käfig (14) wiederum zwei Seitenflansche (14a) enthält, die die Seitenflansche (13a) des Körpers (13) an der Außenseite überlagern, welche wenigstens eine Abdeckung (14b, 14c), die integral zwischen den Flanschen (14a) des Käfigs (14) verläuft, durch geformte Schlitze (13d) hindurch geht, die in den Seitenflanschen (13a) des Körpers (13) entsprechend dem wenigstens einen Durchgang (13c) gebildet sind, welche Verriegelungseinrichtungen (16) zwischen den Seitenflanschen (14a) des Käfigs (14) und den Seitenflanschen (13a) des Körpers (13) wirken.
  4. Zylinder nach Anspruch 3, wobei in jedem der Seitenflansche (14a) des Käfigs (14) gekrümmte Schlitze (15) ausgebildet sind, die dem Flanschrand folgen und in einer gleichmäßig beabstandeten Weise längs eines solchen Randes angeordnet sind, welche Verriegelungseinrichtungen (16), um die Seitenflansche (13a, 14a) des Körpers (13) und des Käfigs (14) aneinander reversiblen festzuziehen, Einrichtungen enthalten, die verschiebbar von den Schlitzen (15) aufgenommen sind.
  5. Zylinder nach Anspruch 4, wobei die Festzieheinrichtungen Schraubeneinrichtungen (16) enthalten, die innerhalb entsprechender Gewindesitze in Eingriff sind, die in den Seitenflanschen (13a) des Körpers (13) ausgebildet sind, und an der Außenseite die Seitenflansche (14a) des Käfigs (14) festziehen.
  6. Zylinder nach einem der Ansprüche 1 bis 5, wobei der Körper (13) zwei zylindrische Sektoren (13b) über zwei symmetrische Bögen entsprechend jeweiligen Gegenschnittnuten (6) enthält, wodurch zwei Durchgänge (13c) definiert sind, um entsprechende Abdeckungen (14b, 14c) aufzunehmen.
  7. Zylinder nach einem der Ansprüche 3 bis 6, wobei Hülsen (17) axial von den Seitenflanschen (14a) des Käfigs (14) vorstehen, die Drehwelle (1a) koaxial überlagern und davon außer Eingriff sind, welche zweiten Antriebseinrichtungen entsprechende Zahnräder (18) enthalten, die integral von den Hülsen (17) gehalten sind und mit entsprechenden Zahnrädern (19) in Eingriff sind, die in dem zweiten Faltzylinder (2) gebildet sind.
EP04721983A 2003-03-28 2004-03-19 Falzzylinder für blattgut Expired - Lifetime EP1611042B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL04721983T PL1611042T3 (pl) 2003-03-28 2004-03-19 Cylinder zginający dla materiałów arkuszowych
SI200431322T SI1611042T1 (sl) 2003-03-28 2004-03-19 Zgibalni valj za listnat material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000085A ITFI20030085A1 (it) 2003-03-28 2003-03-28 Cilindro di piegatura per materiale in foglio e apparecchiatura piegatrice impiegante detto cilindro.
PCT/IT2004/000134 WO2004085301A1 (en) 2003-03-28 2004-03-19 Folding cylinder for sheet-like material and folder apparatus making use of said cylinder

Publications (2)

Publication Number Publication Date
EP1611042A1 EP1611042A1 (de) 2006-01-04
EP1611042B1 true EP1611042B1 (de) 2009-10-21

Family

ID=33042687

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04721983A Expired - Lifetime EP1611042B1 (de) 2003-03-28 2004-03-19 Falzzylinder für blattgut

Country Status (8)

Country Link
EP (1) EP1611042B1 (de)
AT (1) ATE446271T1 (de)
DE (1) DE602004023705D1 (de)
ES (1) ES2335006T3 (de)
IT (1) ITFI20030085A1 (de)
PL (1) PL1611042T3 (de)
SI (1) SI1611042T1 (de)
WO (1) WO2004085301A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105857700A (zh) * 2015-01-20 2016-08-17 晋江市齐瑞机械制造有限公司 一种用于手帕纸包装的横折装置及其实现方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE399017B (sv) * 1976-08-19 1978-01-30 Wifag Maschf Falsningsapparat
DE4426987C2 (de) * 1994-07-29 1998-10-22 Roland Man Druckmasch Falzapparat mit Formatumstellung
EP0729910B1 (de) * 1995-03-03 2002-07-10 Winkler + Dünnebier Aktiengesellschaft Läufer für eine Falteinrichtung sowie Falteinrichtung

Also Published As

Publication number Publication date
PL1611042T3 (pl) 2010-04-30
ITFI20030085A1 (it) 2004-09-29
EP1611042A1 (de) 2006-01-04
SI1611042T1 (sl) 2010-03-31
DE602004023705D1 (de) 2009-12-03
ES2335006T3 (es) 2010-03-18
WO2004085301A1 (en) 2004-10-07
ATE446271T1 (de) 2009-11-15

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