EP0437231A2 - Cylindre de renvoi - Google Patents

Cylindre de renvoi Download PDF

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Publication number
EP0437231A2
EP0437231A2 EP91100166A EP91100166A EP0437231A2 EP 0437231 A2 EP0437231 A2 EP 0437231A2 EP 91100166 A EP91100166 A EP 91100166A EP 91100166 A EP91100166 A EP 91100166A EP 0437231 A2 EP0437231 A2 EP 0437231A2
Authority
EP
European Patent Office
Prior art keywords
elements
roller
web
deflection roller
deflection
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.)
Withdrawn
Application number
EP91100166A
Other languages
German (de)
English (en)
Other versions
EP0437231A3 (en
Inventor
Rolf Hessenbruch
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.)
Oerlikon Barmag AG
Original Assignee
Barmag AG
Barmag Barmer Maschinenfabrik 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
Application filed by Barmag AG, Barmag Barmer Maschinenfabrik AG filed Critical Barmag AG
Publication of EP0437231A2 publication Critical patent/EP0437231A2/fr
Publication of EP0437231A3 publication Critical patent/EP0437231A3/de
Withdrawn legal-status Critical Current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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/32—Arrangements for turning or reversing 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
    • 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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/34—Modifying, selecting, changing direction of displacement
    • B65H2301/342—Modifying, selecting, changing direction of displacement with change of plane of displacement
    • B65H2301/3423—Modifying, selecting, changing direction of displacement with change of plane of displacement by travelling an angled curved path section for overturning and changing feeding direction
    • 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
    • B65H2404/12—Rollers with at least an active member on periphery
    • B65H2404/123—Rollers with at least an active member on periphery moving in parallel to roller 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
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/12—Rollers with at least an active member on periphery
    • B65H2404/123—Rollers with at least an active member on periphery moving in parallel to roller axis
    • B65H2404/1231—Arrangement of axially movable active elements, i.e. movable in parallel to roller 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
    • 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
    • B65H2404/1374—Means for varying longitudinal profiles means for varying longitudinal length

Definitions

  • the invention relates to a deflecting roller for an inclined flat material web, in particular plastic film web according to the preamble of claim 1.
  • Such a deflection roller is known from DE-OS 29 21 274. It is used to traverse a flat film web in the production of a film roll, system-related thick spots extending in the longitudinal direction of the web being distributed over the width of the film roll produced, in order to avoid deformations remaining in the film web and a flat web free of deformation during further processing to be able to deduct.
  • the elements that form the overflow surface are articulated in the side windows of the roller. As a result, when the side windows are pivoted sideways, the elements of the overflow surface are axially displaced and the film web is guided to the side.
  • the object of the invention is therefore to provide a deflection device for such a turning bar system with an inclined turning bar or deflection roller, with which film sheets that are more difficult to handle, in particular sticky film sheets, can be pulled off and wound up without bulges.
  • the elements which form the overflow surface of the deflection roller can be taken along individually in the axial direction by the web.
  • they are not connected to one another in the circumferential direction, but rather are each mounted on the circumference of the roller in such a way that they can be freely moved in the axial direction.
  • the displacement of the elements results from the fact that the sloping incoming and outgoing web has an axial component of motion, which depends on the angle at which the web running on the deflecting roller is deflected in the tangential surface.
  • the elements of the deflecting roller can participate in the axial movement of the web, there is the advantage of a wrinkle-free deflection of the web.
  • a fixed restoring device engages the elements in the area of the non-wrapped circumference, by means of which the axially displaced elements are pushed back into their initial position.
  • the elements are continuously axially displaced and returned to their starting position when the deflection roller, which is freely rotatable and is carried along by the web or can possibly be positively driven, rotates.
  • the sliding elements can have the cross section of a regular polygon, for example triangle or hexagon or of an isosceles trapezoid, preferably the overflow edges pointing radially outward during operation are rounded.
  • the fastening of the elements on the circumference of the deflection roller can be carried out in a form-fitting manner in corresponding axial grooves.
  • the friction between the web and the deflection surface is reduced and damage when the web overflows is avoided.
  • the proposal that the web touches the overflow surface with line contact also favors a wrinkle-free run of the film web.
  • the elements have a circular or circular cross section and are rotatably mounted on the roller circumference and are displaceable in the axial direction.
  • Such a deflection roller can be produced with little effort, in particular if the elements are designed as rods or thin-walled tubes.
  • the proposal according to claim 6 also serves to reduce the liability between the web and overflow area. It is suitable for all cross-sectional configurations of the sliding elements.
  • the overflow roller can be formed according to claim 7 from a roller body, on the circumference of which axial grooves are provided at regular intervals, in which the elements, in particular rods, are guided. In cross section, these axial grooves have a geometrically similar profile to the sliding elements. They are arranged so that the elements cannot fall out in the radial direction.
  • the deflecting roller can also consist of a plurality of side disks, which have circumferentially distributed recesses through which the sliding elements are guided in the axial direction.
  • the side windows are connected to one another by a common, preferably telescopically nested axis, and are thereby secured against rotation. The elements protrude so far in the axial direction that they are still in the roller body during the axial displacement through the web are guided and do not fall out axially.
  • the sliding elements can advantageously be reset by springs, in particular helical, leaf or disc springs. These preferably each engage the axial end of a deflected element, specifically in an angle of rotation range in which the deflection roller is not wrapped around by the web.
  • the resetting device can also be formed by a disc inclined to the side window of the deflection roller or by a stationary guide track, for example a guide shoe or the like, against which the axially displaced elements run.
  • the displacement elements are freely displaceable in the axial direction and consist of a flexible material, such that the sliding elements are deflected by an angle of 90 ° at the roller ends by positive guides.
  • the overflow surface consists of a plurality of endless belts which are distributed over the circumference of the deflecting roller and extend between the axial ends of the deflecting roller. They are deflected there by rollers in the radial or secantial direction. The deflection takes place in such a way that the crossing bands running over the side windows of the deflecting roller are guided in different parallel normal planes so that they do not touch or interfere with one another.
  • the belts on which the web rests and is deflected are in circulation without the need for a special reset device.
  • the belts are returned in the angular range that is not wrapped around by the web.
  • a further embodiment according to claim 13, in which the sliding elements are designed as cords, has the advantage that the elements forming the deflection surface of the roller also coexist on the circumference of the roller narrow division can be arranged.
  • the cords, endless helical springs or the like are deflected by 180 ° at the roller ends by the rollers arranged at the roller ends and are returned in an axial groove cut radially into the roller shell.
  • a deflection roller 1 is shown in perspective for a flat web.
  • This deflecting roller 1 consists of a roller body 2, preferably a thick-walled tube, in the circumferential surface of which axially extending grooves 20 (FIG. 2) are introduced, and on the end faces of which side disks 3 are fastened with journals 4 for mounting the roller.
  • the elements 5, which are designed as rods, are inserted into the axial grooves 20 and protrude radially beyond the circumferential surface of the roller body 2 and their radially most protruding surfaces are discontinuous
  • Form overflow surface 6 for the web The elements 5 are free in the axial grooves 20 in the longitudinal direction and can be displaced independently of one another. However, they are secured against radial falling out of the roller body 2 in a manner not shown.
  • the deflection roller 1 is shown with a web 7 running obliquely over the overflow surface 6.
  • the tangentially running web 7 runs obliquely at an angle onto the overflow surface 6, which angle deviates from the angle alpha of 90 ° with respect to the longitudinal direction of the elements 5.
  • a circumferential component is exerted on the rods 5, which drives the deflection roller in the direction of the arrow 8.
  • an axial force component is transmitted through the material web, by means of which the elements 5 are displaced axially in the direction of a stationary resetting device 9.
  • the web 7 runs wrinkle-free from the overflow surface 6 and the elements 5 running against a guideway 10 of the restoring device 9 are pushed back into their starting position in the direction of arrow 11.
  • FIG. 3 shows another embodiment of the deflecting roller according to FIG. 1.
  • the roller body 2 with the axial grooves 20 for guiding the elements
  • side disks 12 with circumferentially distributed grooves 15 for receiving the cage-like elements 5 are provided at an axial distance here.
  • the side windows 12 are connected in a torsionally rigid manner by means of hub-shaped components 14 to a roller axis 13, which consists of two tubes which are pushed into one another and adjustable in length.
  • the shape of the grooves 15 is similar to the cross-sectional shape of the elements 5. These can have different cross sections. Some forms 5.1 to 5.6 are shown in FIG. 4, for example. These are polygonal cross sections (triangle 5.1, trapezoid 5.3, hexagon 5.4) and / or cross sections delimited by arcs (circular section 5.2, circle or tube 5.5, ellipse 5.6).
  • the grooves 15 provided in the side windows 12 are open in the circumferential direction, but arranged so that the elements 5 cannot fall out.
  • the elements held positively in the grooves 15 cannot rotate about their longitudinal axis.
  • the only exception is the rod 5.5, which is preferred for this reason, with a circular or annular cross section.
  • the elements In order to reduce the adhesion or friction between the material web 7 running tangentially via the deflection roller 1 and the elements in the remaining elements 5, the elements have rounded longitudinal edges on their overflow surface and / or are covered with bristles 16.
  • FIG. 5 and 6 show a schematic representation of a deflection roller 1 according to the invention, in which the displacement elements 5.7 forming the overflow surface 6 can be freely moved on the one hand by the inclined web of material, but in which on the other hand a reset device for returning the displacement elements 5.7 to the starting position is not required.
  • the displacement elements 5.7 are designed here as line-shaped structures, in particular as strips, which are deflected radially or secantially on the end faces of the deflection roller 1. They are taken along by the web running over the displacement elements and returned on the side of the roller 1 that is not wrapped by the web 7.
  • the deflection takes place via rotatably mounted rollers 17 such that the flexible belts 5.7 on the end faces of the rollers in parallel normal planes in Distance are performed so that they do not interfere with each other at the crossing points.
  • the displacement elements here are endless cords 5.8 made of high-strength, elastic materials, for example made of Teflon, or also endless coil springs under tension.
  • the displacement elements 5.8 are stretched between deflection rollers 17, which are mounted at the ends of the roller and distributed over its circumference.
  • the deflection rollers are all aligned radially and two deflection rollers axially assigned to one another in one plane are wrapped around the circumference of a cord 5.8 each.
  • the endless displacement elements are driven in the axial direction by the material web running obliquely in a tangential plane of the roller. After a 180 ° deflection on the deflection roller, the endless cord is fed back through a radial groove that is introduced into the roller surface parallel to the axis. As a result, there are no longer any crossovers of the deflected displacement elements 5 in the region of the roller end faces.

Landscapes

  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
EP19910100166 1990-01-12 1991-01-07 Return roll Withdrawn EP0437231A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4000772 1990-01-12
DE4000772 1990-01-12

Publications (2)

Publication Number Publication Date
EP0437231A2 true EP0437231A2 (fr) 1991-07-17
EP0437231A3 EP0437231A3 (en) 1991-11-13

Family

ID=6397982

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910100166 Withdrawn EP0437231A3 (en) 1990-01-12 1991-01-07 Return roll

Country Status (1)

Country Link
EP (1) EP0437231A3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005118445A1 (fr) * 2004-05-27 2005-12-15 3M Innovative Properties Company Appareil permettant de devier ou de retourner des bandes en defilement
DE102010055977A1 (de) * 2010-12-23 2012-06-28 Giesecke & Devrient Gmbh Verfahren und Vorrichtung zum Umlenken von Blattgut sowie Blattgutbearbeitungsmaschine
CN104944231A (zh) * 2014-03-25 2015-09-30 合肥神马科技集团有限公司 一种导带换向装置及其导带换向方法
FR3026397A1 (fr) * 2014-09-30 2016-04-01 Eric Bellet Barre destinee au renvoi angulaire de materiaux en films continus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3095131A (en) * 1959-07-06 1963-06-25 Mount Hope Machinery Ltd Web guiding method and apparatus
FR1286408A (fr) * 1961-04-17 1962-03-02 Perkin Elmer Corp Dispositif de rouleau de guidage de bande
DE2032065B2 (de) * 1970-06-29 1972-02-03 Windmoller & Holscher, 4540 Lenge rieh Wendevorrichtung fuer flexible bahnen vorzugsweise fuer duenne kundtstoffolienbahnen
DE2540714A1 (de) * 1974-09-17 1976-03-25 Nippon Steel Corp Bandumlenkvorrichtung

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005118445A1 (fr) * 2004-05-27 2005-12-15 3M Innovative Properties Company Appareil permettant de devier ou de retourner des bandes en defilement
US7300371B2 (en) 2004-05-27 2007-11-27 3M Innovative Properties Company Apparatus for deflecting or inverting moving webs
DE102010055977A1 (de) * 2010-12-23 2012-06-28 Giesecke & Devrient Gmbh Verfahren und Vorrichtung zum Umlenken von Blattgut sowie Blattgutbearbeitungsmaschine
CN104944231A (zh) * 2014-03-25 2015-09-30 合肥神马科技集团有限公司 一种导带换向装置及其导带换向方法
CN104944231B (zh) * 2014-03-25 2016-12-21 合肥神马科技集团有限公司 一种导带换向装置及其导带换向方法
FR3026397A1 (fr) * 2014-09-30 2016-04-01 Eric Bellet Barre destinee au renvoi angulaire de materiaux en films continus
EP3012216A1 (fr) 2014-09-30 2016-04-27 Eric Bellet Barre destinée au renvoi angulaire de matériaux en films continus

Also Published As

Publication number Publication date
EP0437231A3 (en) 1991-11-13

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