EP1967474B1 - Ausbreitwalze für Stoffbahnen - Google Patents

Ausbreitwalze für Stoffbahnen Download PDF

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Publication number
EP1967474B1
EP1967474B1 EP20070425131 EP07425131A EP1967474B1 EP 1967474 B1 EP1967474 B1 EP 1967474B1 EP 20070425131 EP20070425131 EP 20070425131 EP 07425131 A EP07425131 A EP 07425131A EP 1967474 B1 EP1967474 B1 EP 1967474B1
Authority
EP
European Patent Office
Prior art keywords
roll
bearing
elastomer
raceway ring
spreader roll
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 - Fee Related
Application number
EP20070425131
Other languages
English (en)
French (fr)
Other versions
EP1967474A1 (de
Inventor
Giovanni Luigi Bottelli
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.)
Huyck Italia SpA
Original Assignee
Huyck Italia SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huyck Italia SpA filed Critical Huyck Italia SpA
Priority to DE200760004824 priority Critical patent/DE602007004824D1/de
Priority to EP20070425131 priority patent/EP1967474B1/de
Publication of EP1967474A1 publication Critical patent/EP1967474A1/de
Application granted granted Critical
Publication of EP1967474B1 publication Critical patent/EP1967474B1/de
Expired - Fee Related legal-status Critical Current
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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/022—Registering, tensioning, smoothing or guiding webs transversely by tentering devices
    • B65H23/025—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers
    • B65H23/0258—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers with a bowed axis
    • 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
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/13—Details of longitudinal profile
    • B65H2404/134—Axle
    • B65H2404/1341—Elastic mounting, i.e. subject to biasing means
    • 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
    • B65H2404/13—Details of longitudinal profile
    • B65H2404/137—Means for varying longitudinal profiles
    • B65H2404/1371—Means for bending, e.g. for controlled deflection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/50—Diminishing, minimizing or reducing
    • B65H2601/52—Diminishing, minimizing or reducing entities relating to handling machine
    • B65H2601/524—Vibration

Definitions

  • the invention relates to web processing machinery and in particular to web spreader roll.
  • So-called web spreader, expander or widener rolls are rotary parts that are extensively employed in machinery for the fabrication and/or for successive processing of continuous ribbons of materials of innumerable types. Machinery used in paper, plastic foil, printing and textile industries generally require the use of numerous spreader rolls.
  • WO 02/092293 A1 discloses a web spreader roll and method for spreading webs of materials wherein the spreader roll has a tapered diameter starting from a maximum diameter at the middle of the roll wherein the taper may have a straight, a parabolic or other profile.
  • JP 2004189412 discloses a bow adjustment mechanism and relative method for a segmented spreader roll made by a plurality of juxtaposed segments each independently supported at certain elevation from a planar support.
  • WO 2005/115894 A1 discloses a spreader roll composed by a tapered stationary axle and a one-piece tubular outer sleeve rotable about the axle and elastically flexible such to be able to bend.
  • WO 2006/045882 A1 discloses a spreader roll having a curved axle on which a plurality of roll segments are mounted, each on a sustaining roller bearing, and wherein flexible connector members connect juxtaposed ends of adjacent roll segments such that a terminal roll segment may be driven to rotate all the roll segments around the axle.
  • WO 97/00826 discloses a bearing arrangement and a coupling element of a spreading roll.
  • the spreading roll comprises segments that are interconnected by coupling elements to rotate around a shaft.
  • the fastening on the shaft is realized with one or more bearings that are positioned in place by means of an outer casing and a sleeve.
  • the coupling elements that are reinforced with an inner sleeve replace the support previously supplied by the bearings.
  • US 2006/0183613 A1 discloses a spreader roll having a tubular one-piece sleeve supported by a plurality of spools and the curvature of which is adjustable.
  • FIG. 1 A typical web spreader roll construction is shown in Figure 1 .
  • the depicted spreader roll is shown provided also with the often unnecessary, optional means of independent driving of the roll through a common belt transmission.
  • the drawing depicts only one end portion of the rotable part of the spreader roll that is composed by a plurality of roll segments 2, mounted on an bowed axle 1.
  • Each roll segment 2 has a ball bearing 3 installed at the middle of the segment, commonly retained by a pair of Seeger rings 4.
  • the first roll segment at one side end of the plurality of segments that form the rotable sleeve of the spreader roll, has a modified termination sustained by a second ball bearing 3' for solidly carrying a cantilever pulley P on which a common trapezoidal cross-sectional drive belt may run.
  • the plurality of roll segments 2 are slipped over the axle 1 in succession, inserting also O-rings 5 of an elastically deformable material (elastomer) and tubular spacers 6 that elastically compress the O-rings 5 at the corner between the side surface of the inner raceway rings 7 of the ball bearings 3 and the cylindrical surface of the axle 1, such to hold fast the inner raceway ring 7 onto the stationary axle 1.
  • O-rings 5 of an elastically deformable material (elastomer) and tubular spacers 6 that elastically compress the O-rings 5 at the corner between the side surface of the inner raceway rings 7 of the ball bearings 3 and the cylindrical surface of the axle 1, such to hold fast the inner raceway ring 7 onto the stationary axle 1.
  • the outer raceway ring 8 of the ball bearings supports the respective roll segment 2.
  • the juxtaposed spaced ends of two adjacent roll segments are joined by a flexible connector 9, typically of an elastomer. Therefore, the plurality of centrally supported rotable roll segments 2 revolves as a single-piece outer sleeve of the web expander roll.
  • a basic parameter of a web expander roll is the diameter of its rotable outer sleeve that, in combination with the spatial orientation of the convex part of the bowed roll and the arc of circumference engaged by the running web determines the transversal stretching action on the running web material, according to a common roll structure as the one depicted in Figure 1 , a certain outer diameter of the working surface of the spreader roll, generally commands the choice of the diameter of the stationary axle 1 and of the roller bearings used for supporting the roll segments 2 with minimum mechanical clearances in order to minimize vibrations and allow a high rotational speed. This implies a considerable increment of overall weight of the structure that generally goes well beyond what would required for satisfying only a stiffness requisite.
  • the construction generally requires a relatively expensive machining of the inner cylindrical surface of each roll segment to form the seats of the supporting roller bearing and of the retaining Seeger rings 4 as well as abutment steps at the two ends for installing the elastic spacing connectors 9.
  • the continuous web of paper, film or fabric being handled may have a width and mechanical strength characteristics such to be perfectly adequate to bring and keep in rotation the free-wheeling roll segments that are usually connected together to act as a free-wheeling sleeve of the spreader roll on which it runs.
  • a common belt transmission (as depicted in Fig. 1 ) must be used to drive in rotation a first roll segment at one side end of the spreader roll.
  • an outer tubular sleeve of a elastic material is forcibly pulled over the plurality of bearing supported roll segments for providing a single piece outer surfacing member of the spreader roll.
  • Vibratory characteristics of spreader rolls are extremely important; usually critical speed parameters are defined for every roll model in order to set appropriate safe speed ranges of operation.
  • each roll segment (or spool) of the spreader roll is sustained at both its ends on two bearing assemblies each comprising an outer crown portion of elastomer that engagingly sustains the two juxtaposed end portions of two adjacent roll segments.
  • the novel structure ensures an enhanced vibration-free support of each roll segment when rotating at high speed and subject to abrupt disuniformities of the load exerted on the segments by the running web.
  • the diameter of the bowed axle as well as of the inner and outer raceway rings of the bearings can be sensibly reduced without impairing stiffness characteristics of the spreader roll. This allows to achieve a significant weight reduction while preserving the same usable range of arc of contact with the running web, in other words allowing to significantly reduce the ratio between the diameter of the stationary axle and the outer diameter of the rotating "sleeve" of the spreader roll.
  • Figure 2 illustrates a first embodiment of the novel structure of this invention of basic geometrical parameters equivalent to those of the comparable prior art structure of Figure 1 .
  • a drive pulley P is associated to the first roll segment as in the example of prior structure of Figure 1 , in the assumption that the type of application of the spreader roll requires it.
  • each roll segment 2 is sustained at both its ends on bearing assemblies, each comprising an outer crown portion 10 of elastomer that engagingly sustains the spaced juxtaposed end portions of two adjacent roll segments.
  • the spacing between juxtaposed ends of the sustained roll segments may be in the order of few millimeters, depending on outer diameter and bow of the expander roll, in any case sufficient to prevent the rims of adjacent segments from touching each other when rotating about the concave part of the bowed structure, as it is well known to the skilled person.
  • the bearing assembly comprises a fixed bush 11 that is fastened onto the stationary axle 1 by a set screw.
  • a common ball bearing 3 is installed on the fixed bush 11, in a confinement space defined by the fixed bush 11 and by an inner metal portion 12 of the radially extending composite rotable crown composed of said outer portion of elastomer 10 and an inner metal portion 12.
  • the bearing 3 is held by an elastic washer 13 and Seeger ring 14 against abutment steps 15 and 16 of said fixed sleeve 11 and of the metal inner portion of the crown 12, respectively.
  • the stiffness of the roll segment itself, or in other words its wall thickness may be reduced for contributing to the reduction of the mass (inertia) of the rotating part of the spreader roll, which is enhanced also by the possibility of employing bearings of relatively small diameter.
  • each bearing assembly is a pre-fabricated one-piece composite formed by a ball bearing 3, the inner raceway ring 7 of which is directly bonded onto the cylindrical surface of the bowed axle 1.
  • the outer raceway ring 8 of the bearing has a crown 10 of elastomer bonded or molded thereon such to form a single composite part.
  • the outermost surface of the crown of elastomer 10 has a narrow circular trench 17 on a sectional plane that extends into the elastomer to a depth sufficient to substantially de-couple the two outermost portions of the ealstomer crown 10, in terms of lateral swayings.
  • Each of two outermost portions of the partly spit body of the elastomer crown 10 engages with and sustains the end portion of a respective roll segment 2, swaying to one side and to the other in revolving about the bowed axle 1, in opposite directions to the swaying of the other portion that engages and supports the end of the adjacent roll segment.
  • Adequate engagement between the end portion of a tubular roll segment with the elastomer crown portion may be established in many different ways. For example, a moderate compression of a machined or precisely molded crown of elastomer 10, upon forcibly installing thereon the ends of the tubular roll segments can establish a secure interference-engagement of the parts that makes them to rotate as one piece. Glueing the end of the tubular roll segment onto the outermost surface on the elastomer crown is another viable technique.
  • Forming matching projections and recesses on the inner end surface of the tubular roll segment and on the surface of the supporting elastomer crown portion to be brought into a secure engagement upon installing the tubular segments onto the rotable bearing assemblies pre-installed onto the stationary bowed axle, is yet another effective technique.
  • the inner raceway rings 7 of the roller bearings may be bonded to the axle 1 by an adhesive, for example a powder loaded epoxy resin adhesive, a silicone based adhesive and alikes, in order to prevent rotation of the raceway rings around the stationary axle 1.
  • an adhesive for example a powder loaded epoxy resin adhesive, a silicone based adhesive and alikes, in order to prevent rotation of the raceway rings around the stationary axle 1.
  • the elastic characteristics of the radially extending elastomer crown portion 10 may be established in the design phase, in function of dimensions, characteristics of the web material, speed specifications, type, weight and mechanical characteristics of the tubular roll segments.
  • the elastomer is a natural or synthetic rubber having physical properties such as chemical and temperature resistance and hardness suited for the contemplated use or application of the expander roll.

Landscapes

  • Rolls And Other Rotary Bodies (AREA)
  • Support Of The Bearing (AREA)

Claims (8)

  1. Bahnausbreitwalze, die mehrere Zwischenwalzensegmente (2) oder Spulen zwischen seitlichen Endwalzensegmenten, die jeweils an einem äußeren Laufring (8) eines Lagers (3) gehalten werden, dessen innerer Laufring (7) an einer zylindrischen Außenfläche einer feststehenden Bogenachse (1) der Ausbreitwalze befestigt ist, und flexible Verbindungsmittel (9) nebeneinander liegender Enden benachbarter Walzensegmente (2) aufweist, dadurch gekennzeichnet, daß jedes Zwischenwalzensegment (2', 2") an seinen beiden Enden durch zwei Lageranordnungen (3, 7, 8, 10) gestützt wird, die jeweils einen Kronenabschnitt (10) aus Elastomer aufweisen, der zwei frei nebeneinander liegende Endabschnitte zweier benachbarter Walzensegmente (2', 2") angreifend stützt.
  2. Bahnausbreitwalze nach Anspruch 1, dadurch gekennzeichnet, daß jede Lageranordnung aufweist eine feste Buchse (11), die an der Bogenachse (1) befestigt ist;
    ein Lager (3) auf der festen Buchse (11), das einen inneren Laufring (7), der fest auf der Buchse (11) gehalten wird, und einen äußeren Laufring (8) aufweist; eine Krone (10, 12), die mit dem äußeren Laufring (8) des Lagers (3) verbunden ist und zusammen mit der festen Buchse (11) einen Einschlußraum des Lagers definiert, das an Anschlagstufen (15, 16) der festen Buchse und der Krone gehalten wird;
    wobei die Krone einen inneren Metallabschnitt (12) und einen äußeren Abschnitt (10) aus Elastomer aufweist.
  3. Bahnausbreitwalze nach Anspruch 1, wobei jede Lageranordnung (3, 7, 8, 10) eine vorgeformte einstückige Verbundstruktur ist, die ein Lager (3) aufweist, dessen innerer Laufring (7) direkt auf der zylindrischen Oberfläche der Bogenachse (1) befestigt ist und dessen äußerer Laufring (8) einen daran geklebten Elastomerkronenabschnitt (10) aufweist; die äußerste Oberfläche des Elastomerkronenabschnitts (10) eine schmale kreisförmige Kerbe (17) aufweist, die sich im Elastomer bis zu einer bestimmten Tiefe erstreckt, die ausreicht, um die beiden äußersten Abschnitte des Elastomerkronenabschnitts (10) zu entkoppeln, die jeweils die nebeneinander liegenden Enden benachbarter Walzensegmente (2', 2") halten.
  4. Bahnausbreitwalze nach Anspruch 3, wobei der Elastomerkronenabschnitt (10) auf einen äußeren Metalllaufring eines Kugellagers (3) befestigt oder geformt ist.
  5. Bahnausbreitwalze nach Anspruch 3, wobei der innere Laufring (7) des Lagers durch ein Klebemittel auf die Oberfläche der Bogenachse (1) geklebt ist.
  6. Bahnausbreitwalze nach Anspruch 1, wobei jedes Walzensegment (2', 2") ein röhrenförmiges Segment mit einer zylindrischen Außenfläche aus einem metallischen oder verstärkten Kunststoffmaterial ist.
  7. Bahnausbreitwalze nach Anspruch 6, wobei jedes Walzensegment (2', 2") eine äußere Oberflächenschicht (2") aus einem Material aufweist, das zu der Gruppe gehört, die aus Naturkautschuk und Kunstgummi, Polyurethan, Wolframkarbid besteht.
  8. Bahnausbreitwalze nach einem der vorhergehenden Ansprüche, die ferner eine Antriebsriemenscheibe (P) aufweist, die mechanisch mit einem Endabschnitt eines ersten seitlichen Endwalzensegments an einem seitlichen Ende der Ausbreitwalze verbunden ist.
EP20070425131 2007-03-07 2007-03-07 Ausbreitwalze für Stoffbahnen Expired - Fee Related EP1967474B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE200760004824 DE602007004824D1 (de) 2007-03-07 2007-03-07 Ausbreitwalze für Stoffbahnen
EP20070425131 EP1967474B1 (de) 2007-03-07 2007-03-07 Ausbreitwalze für Stoffbahnen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20070425131 EP1967474B1 (de) 2007-03-07 2007-03-07 Ausbreitwalze für Stoffbahnen

Publications (2)

Publication Number Publication Date
EP1967474A1 EP1967474A1 (de) 2008-09-10
EP1967474B1 true EP1967474B1 (de) 2010-02-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070425131 Expired - Fee Related EP1967474B1 (de) 2007-03-07 2007-03-07 Ausbreitwalze für Stoffbahnen

Country Status (2)

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EP (1) EP1967474B1 (de)
DE (1) DE602007004824D1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107804734A (zh) * 2017-09-26 2018-03-16 常熟市龙略机电有限公司 一种展幅对中的导布辊组件及其应用的带式织物送布机
CN108298363B (zh) * 2018-03-06 2024-01-19 石狮市卓诚机械自动化设备有限责任公司 一种展布效果佳的展布装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3099072A (en) * 1961-06-13 1963-07-30 Mount Hope Machinery Ltd Table roll with means for removing longitudinal curvature
DE2108702C2 (de) * 1971-02-24 1982-05-27 Kleinewefers Gmbh, 4150 Krefeld Knickwalze
FI60430C (fi) * 1980-04-24 1982-01-11 Waertsilae Oy Ab Boejningskompensering i vals
FI100351B (fi) 1995-06-20 1997-11-14 Raahen Tevo Oy Levitystelan laakerointi ja kytkinelementti
US6843762B2 (en) * 2000-12-18 2005-01-18 Spencer Johnston Company Spreader roll
US20040154146A1 (en) 2001-05-17 2004-08-12 Pruitt Paul R. Web spreader roll and methods for spreading webs of material
JP2004189412A (ja) 2002-12-11 2004-07-08 Mitsubishi Heavy Ind Ltd セグメントスプレッダロールの調整機構および調整方法ならびにワインダ設備
DE20309301U1 (de) * 2003-06-13 2003-08-28 Stowe Woodward Ag Breitstreckwalze
DE202004021651U1 (de) 2004-05-29 2009-10-08 Voith Patent Gmbh Drehteil
FI117023B (fi) 2004-10-25 2006-05-15 Pikorolls Oy Levitystela

Also Published As

Publication number Publication date
EP1967474A1 (de) 2008-09-10
DE602007004824D1 (de) 2010-04-01

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