EP2188429B1 - Rouleau à surface rugueuse - Google Patents

Rouleau à surface rugueuse Download PDF

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Publication number
EP2188429B1
EP2188429B1 EP09783560A EP09783560A EP2188429B1 EP 2188429 B1 EP2188429 B1 EP 2188429B1 EP 09783560 A EP09783560 A EP 09783560A EP 09783560 A EP09783560 A EP 09783560A EP 2188429 B1 EP2188429 B1 EP 2188429B1
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EP
European Patent Office
Prior art keywords
roughened
roller
sleeve
elastic
helices
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Active
Application number
EP09783560A
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German (de)
English (en)
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EP2188429A1 (fr
Inventor
Karl-Heinz Schneiders
Michael Podlesny
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Individual
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C3/00—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics
    • D06C3/06—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics by rotary disc, roller, or like apparatus
    • 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
    • B65H23/0251—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers with a straight axis
    • B65H23/0256—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers with a straight axis with opposed helicoidal windings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2401/00—Materials used for the handling apparatus or parts thereof; Properties thereof
    • B65H2401/10—Materials
    • B65H2401/11—Polymer compositions
    • B65H2401/112—Fibre reinforced

Definitions

  • the invention relates to a spreader roll having a rigid base body and an elastic covering applied thereto for spreading continuous flexible web material.
  • a spreader roll for spreading continuous flexible web material comprising a rigid roll body having terminal journals. On the roll body, a jacket-shaped coating of elastomeric material is applied.
  • the elastomeric pad contains outgoing from its lateral surface, to the longitudinal axis of the roller body oblique incisions, which are inclined on both sides of the radial center plane of the roller respectively to the relevant end of the roller from the inside out.
  • the cuts are in the form of uniform helices and cause a spreading during operation.
  • the inner cuts are offset by 180 ° from each other.
  • the outer edges facing the radial center plane of the roll are rounded or folded.
  • An elastomeric coating wears off within a few years. A roller body is then freed from the remaining surface and applied a new coating. Spirals are then cut into this newly applied coating. Finally, edges are rounded off at the covering surface.
  • the preparation of the cuts in the covering contributes greatly to the recovery costs of such a roller.
  • the elastomeric pad is relatively thick to make suitable deep cuts can.
  • Commercially available spreader rolls of this type have at least a 15 mm thick elastomeric coating on the rigid roll body.
  • the publication EP 133668082 discloses a spreader roll for guiding web-shaped material.
  • a deformable lining is arranged on a support shaft.
  • the lining is provided with oppositely extending, spiral-shaped incisions.
  • the publication WO 04013399 A discloses a roller in which a metallic, roughened film is applied to a roll body.
  • the roughened surface may be spiraled.
  • a rough metallic surface is unsuitable for thin webs that can easily be damaged.
  • an elastically deformable layer is applied to a rigid, preferably cylindrical base body.
  • the basic body does not necessarily have to be a straight cylinder.
  • the elastically deformable layer may consist of a rubber or of an elastomer.
  • the surface of this elastic layer is processed so that a roughened or textured surface in the form of two oppositely extending coils is formed.
  • the cylindrical body can be a conventional, for example from the document WO 2005/1 18446 be known, in particular consisting of a metal roll body.
  • the cylindrical base body may also be merely a sleeve, which preferably consists of a plastic, particularly preferably of a fiber-reinforced plastic.
  • the cylindrical base body is preferably in one piece, but may also consist of several parts, so for example be composed of two parts.
  • That the elastic coating is roughened on its surface means that the roughness is formed by the elastic coating and not by foreign material such as diamond powder or sticking a roughened layer. The roughness is thus achieved by a large number of small depressions in the elastic coating.
  • the recesses are typically 0.1 to 1 mm deep.
  • the mean distance between two wells and the mean diameter of the wells are also typically between 0.1 to 1 mm.
  • the roughened or textured surface is relatively slip resistant compared to non-roughened areas.
  • the roller can therefore even be used as a guide roller, guide roller or web guide roller in particular without its own drive, if it depends on particularly non-slip surfaces. So it is important to pay attention to a particularly non-slip surface when the wrap angle, with which the roller is wrapped by a material web during operation, is small and, for example, only 5 ° to 25 °. On a particularly non-slip surface is also typically observed when the roller is in a liquid through which a web is to be performed.
  • the roller is rotated due to the good adhesion by the adjacent web of material when the web is transported in the usual way.
  • the roller thus basically has no own drive, so that the roller could rotate independently of the movement of the material web. Costs for a separate drive are therefore not required.
  • the diameter is then not tuned to its own drive, which is an additional advantage.
  • the roller is then expediently stored very smoothly, so that only slight frictional forces have to be overcome for turning.
  • the two helixes thus produced have a comparatively non-slip surface Widening of material webs. Since no relatively deep cuts must be made, as this z. B. according to the DE 295 22 011 U1 can be provided, the flexible layer can be very thin. It can be compared to the prior art, are provided in the relatively deep cuts, material and thus cost savings. Also, the production of a helically roughened or textured surface is relatively inexpensive compared to the case where helices are provided by cuts. A helical roughening can be achieved inexpensively by grinding. Since no relatively deep cuts z. B.
  • the invention is based on the idea of providing low-cost, oppositely helically extending surfaces starting from a central region, which are non-slip, ie handy, in comparison with adjacent surface regions. If the elastic covering is already very anti-slip from the very beginning, it may suffice that only the surfaces adjacent to the oppositely helically extending surfaces are slightly shaped, for example not more than 1 mm, preferably not more than 0.5 mm, more preferably not more than 0 2 mm deepen to achieve the desired goals. In general, however, it will be necessary to roughen the helically extending surface areas in order to achieve the required slip resistance of these surface areas.
  • the elastically deformable coating may be thin. It suffices a lining thickness of a few millimeters. For a single use even a lining thickness of a few tenths of a millimeter is sufficient. It is advantageous to apply an elastic layer, for example 10 mm thick, if the covering is to be restored in the manner described according to the invention after wear. Also for manufacturing reasons, it is advantageous to first apply a several millimeters thick elastic layer. An elastic covering applied on a rigid body for the first time will therefore be at least a few millimeters, and in particular at least 3 mm, preferably at least 5 mm, in principle.
  • the elastic layer is at least 15 mm thick.
  • a thickness of the elastic covering of up to 12 mm, preferably of up to 10 mm, is sufficient.
  • areas which are adjacent to the helically running roughnesses or recesses are recessed. These helical depressions achieve an improved spreading effect.
  • the transport of a web to the outside (spreading) takes place by webs with roughened surface.
  • the depressions are not incisions of several millimeters.
  • a depression is instead only a few tenths of a millimeter, for example, only 1/10 millimeter.
  • the purpose of the recesses is merely to prevent direct contact between a material web to be stretched broadly and the areas which are not roughened during spreading. A material web should thus rest firmly on the roughened areas due to the depressions during a spreading, but not on the areas that lie in between.
  • the depth of a depression is therefore advantageously chosen so that on the one hand this goal is achieved and on the other hand a depression as small as possible fails. If a depression is very small, then a material web can not get into a depression in such a way that damage to the material web is to be feared thereby. Basically, therefore, a depth of 1 mm is not exceeded. In general, the depth is well below this value and is less than 0.5 mm.
  • Coil-shaped depressions between the helically roughened surfaces not only support a spreading effect, but can also advantageously provide a fluid, in particular a liquid, can be diverted therefrom so as to improve the adhesion between a material web and the roll.
  • the helical depressions can be made cheaply and quickly by grinding.
  • the intended helical surface area is patterned by means of a laser.
  • a laser can through Grind the desired surface roughened cheaper.
  • a surface roughened by grinding becomes unstable or brittle. This leads to a relatively fast abrasion and a relatively short service life of a manufactured spreader roll. Particles that detach from the surface of the roll can get into a web and thereby contaminate or even damage it.
  • the surface treatment by means of laser is to be preferred in order to arrive at a structured, grippier surface. Damage to the surface resulting in increased abrasion is thus avoided.
  • the spreader roll surfaces can be made reproducible. A spreader roll type can thus be produced as often as desired identical to an identical surface. Thus, if a specific embodiment of a surface has proved to be particularly suitable or practical, the same three-dimensional surface structure can always be restored.
  • a mask can be used. Through openings in the mask, laser light reaches the surface to be roughened. Components of the surface are thus removed without damaging adjacent areas.
  • the laser is preferably computer-controlled and moved so that the desired rough surface is formed. After processing, there is a surface that is no longer smooth but, for example, has small recesses distributed over the surface.
  • the recesses are preferably very small. The dimensions of the recesses are in particular in the range of a few tenths of a millimeter or even in the range of a few hundredths of a millimeter.
  • the maximum diameter of a recess is preferably less than 1 mm, more preferably less than 0.5 mm.
  • the minimum diameter of a recess is preferably more than 0.01 mm, more preferably more than 0.05 mm.
  • the maximum depth of a recess is preferably up to 1 mm, more preferably up to 0.5 mm.
  • the minimum depth of a recess is preferably at least 0.01 mm, more preferably at least 0.1 mm.
  • the grip of the surface can also be increased by a different structuring. For example, a herringbone pattern could be created in the surface to increase the grip properly.
  • a rough, helical surface is produced by means of a laser
  • the areas are also removed by means of the laser, which adjoin the helical, rough surface.
  • the result is the desired helical depressions on which a material web should not rest during the spreading.
  • the desired surface of a spreader roller in a single operation can be produced.
  • the helical depressions are the same depth as the recesses which have been produced by means of laser for the production of a non-slip surface.
  • the rough area has a plurality of recesses with a depth of 0.5 mm
  • the helical recesses are also 0.5 mm deep.
  • This embodiment makes it possible to produce helical depressions and recesses in one operation with the aid of a laser. If different depths are to be introduced into an elastic surface, then differently powerful lasers must be used or the power of an inserted laser must be regulated after a first pass in order to carry out a next production step with changed power. In any case, for these or comparable reasons, the provision of only one depth for coils and recesses is relatively inexpensive.
  • the surface treatment by means of laser does not lead to such surface damage that particles can detach during operation.
  • the elastic covering may have been applied to a preferably metallic roller, which constitutes the abovementioned main body.
  • a sleeve consists in particular of fiberglass or CFK.
  • GRP glass fiber reinforced plastic
  • CFRP carbon fiber reinforced plastic
  • Such a sleeve is sufficiently rigid on the one hand.
  • the sleeves are then advantageously relatively light.
  • a sleeve is applied with the expander roller covering thereon on a preferably made of metal mother cylinder.
  • a master cylinder expediently has only at one end a plurality of holes or holes through which compressed air emerges to the outside. This ensures that compressed air can expand a sleeve in the desired manner right from the start. Although further holes can also be distributed over other areas of the mother cylinder. However, it is expedient to provide only relatively few additional holes, is pumped through the compressed air to the outside. It is with such a distribution of holes or holes in the mother cylinder advantage that a sleeve is always adapted to the mother cylinder with respect to the length. This ensures that compressed air can expand in every position of the sleeve.
  • a master cylinder includes a stop, to which the sleeve can be pushed.
  • the invention comprises an embodiment in which the sleeve is longer compared to the spreader roller covering, ie the region of an elastic layer provided with helices.
  • the sleeve then always has the same length matched to the mother cylinder.
  • the spreader roller covering extends only over part of the sleeve.
  • the sleeve is completely covered with an elastic coating.
  • only a portion of the elastic surface is provided with helices, so that only a portion acts as a spreader roller. Spirals then do not extend completely to the outside so as to detect all outer edge regions of the elastic covering.
  • the production of the elastic covering on the basic body is relatively cheap. Therefore, it may be advantageous to always provide a complete sleeve with an elastic coating and only prepare the required part of the surface as spreader roller cover. In this embodiment of the invention, only one elastomeric-type sleeve type is needed to produce different sized spreader roller coverings.
  • Spreader rolls according to the invention may comprise resilient coverings on the surface with more than two helices extending in opposite directions from a central region. Two coils that run in opposite directions do not necessarily have to go out from the middle. With middle range is therefore not meant that this is exactly in the middle of a spreader roll. Rather, this means a range from which z. B. spirals outwardly opposite.
  • the oppositely running coils may have a staggered beginning. Beginnings of the coils in the middle area can also be next to each other.
  • a middle region can also initially be free of oppositely running helices.
  • the sleeve or a rigid roller body and / or the elastic surface may be electrically conductive. But it is also possible that the rigid roller body or the sleeve and / or the elastic surface with the incorporated therein coils are not electrically conductive.
  • An elastic surface covering or the spreader roller may be concave or convex.
  • the surface covering or the spreader roll as a whole may, for example, be shaped like a banana.
  • the elastic surface covering can taper towards the central region, as for example from the document WO 2005/118446 known is. Spirals can be uniform, but also nonuniform. In contrast to the prior art, there is no more or practically no cost difference, which course of a helix is chosen when the machining of a surface is performed by means of a laser.
  • a spreader roll according to the invention comprises a conventional rigid roll body, it can be stored inside, such. B. by a continuous axis or by stub axle. But it is also an outdoor storage with fixed pins possible. If a spreader roll according to the invention comprises a master cylinder, then it generally has an outer bearing, that is to say fixed spigots, since the air supply can then be effected without problems by means of a spigot. But there are also mother cylinder with internal storage possible.
  • a spreader roll according to the invention can be actively driven by its own drive unit. For reasons of cost, however, it is preferably a free-running spreader roll which therefore rotates solely on account of the tension of an adjacent web in conjunction with the web speed and angle of wrap which the web has with the spreader roll.
  • a conventional rigid roller body used as a rigid body this consists for example of aluminum.
  • the two inner beginnings of the oppositely extending helixes can radially in the from the DE 295 22 011 U1 be known manner offset, but also seen radially adjacent to each other. These two beginnings may have a distance from each other in the axial direction, so that a middle region is free of helices. These two beginnings can begin in the axial direction at the same height or even overlap a little.
  • It can also be multi-speed, so provided with a plurality of oppositely extending helical spreader rolls are made to possibly to achieve a product-related, matched to the application broad spreading or smoothing effect of the material to be processed web.
  • rollers of the invention may comprise features known in the art, singly or in combination.
  • a spreader roll comprises spirals with varying pitches, wherein preferably a pitch of a helical portion 3, 4, 5 and / or 6 increases steadily outwardly from a roll center.
  • FIG. 2 the construction of a master cylinder 7 is shown.
  • the master cylinder comprises a rigid metallic roller body 8. Central through the roller body 8 passes through a line 9 for the supply of compressed air.
  • This supply 9 for compressed air opens at one end of the mother cylinder in holes 10, which lead radially outward.
  • the in the FIG. 1 shown sleeve 1 is pushed at this end over the mother cylinder. In this case, compressed air is pumped through the supply 9 through the holes 10 to the outside.
  • the sleeve 1 can be easily pushed onto the mother cylinder until a stop, not shown, is reached. Subsequently, the supply of compressed air is stopped. The sleeve 1 then pulls something together and now sits very firmly on the mother cylinder.
  • the holes 10 need not be limited to one end of the master cylinder. It can also be distributed over the other roller body further holes can be pumped through the compressed air to the outside.
  • the roughened or structured area 3 is formed by a plurality of webs 3a with a smooth, flat surface and a plurality of depressions 3b.
  • the recesses 3b are always the same depth, as the dashed line illustrates.
  • Recessed areas 5 were also introduced into the surface of the elastic covering 2 in a single operation with a single power laser, these are just as deep as the recesses 3b, which in the FIG. 3 is clarified.
  • the recesses 3b are suitably 0.1 to 1 mm deep.
  • the region 5 adjacent to the structured surface 3 likewise has this expedient depth of 0.1 to 1 mm.
  • the surface of the adjacent area is smooth compared to the surface of the roughened area 3.
  • FIG. 3 different widths of webs 3a are shown. However, the webs 3a can always be the same width. The same applies to the depressions 3b. These can also always be the same width or be different widths.
  • FIG. 4 a particularly typical application is shown.
  • a material web 1 1 is applied to the elastic surface 2 of the roller and is transported in the direction of the arrow.
  • the wrap angle 12 is only small and only 10 ° to 20 °, the roller is rotated due to the transport of the material web thanks to the good adhesion between the material web 11 and elastic covering 2.
  • a separate drive is not required for turning the roller.
  • FIG. 5 shows a further embodiment of the already described in FIG. 1 shown roller shown in fragmentary form.
  • a relatively narrow helical groove 13 extending along the roughened area 4.
  • This groove 13 is narrow in comparison to the recessed, helically extending portion 6.
  • the additional groove 13 preferably has the same depth as the depth of the portion 6 to these in to be able to produce one operation by means of a laser.
  • the additional groove improves the behavior of the spreader roll and, above all, improves the care that a fluid can be led out when a material web rests against the surface. If a fluid can easily be led out, this contributes to the improvement of the adhesion.
  • the additional groove is very narrow, this affects a sensitive material web practically not. It suffices a groove width of for example only 0.1 to 1 millimeters, preferably to only 0.5 mm.
  • the width of the region 6 is at least twice as wide, preferably at least three times as wide.
  • the area 6 is in particular at least 2 mm wide.
  • the roughened area 4 may have a plurality of grooves 13, such as 3 to 5, which extend helically parallel to the area 4.
  • the roughened area 4 may be, for example, 10 to 50 mm wide.
  • the recessed area 6 may also be 10 to 50 mm wide, for example.
  • the roller shown in FIG. 6 corresponds to the roller according to FIG. 3 , However, the transitions from the land surface 3a into the recesses 3b and into the region 5 are now rounded.
  • This embodiment is to be preferred if particularly sensitive material webs are to be guided over the roller and / or stretched wide.
  • the embodiment shown in Figure 6 can also be made in a single operation with a laser.

Abstract

L'invention concerne un rouleau élargisseur destiné à élargir une bande de matière souple en déroulement et un procédé de fabrication de ce rouleau élargisseur. Une couche (2) élastiquement déformable est appliquée sur un corps de base rigide, de préférence cylindrique. La surface de cette couche élastique est traitée de manière à obtenir une surface rugueuse, par exemple, sous forme de deux hélices (3,4) se déroulant en sens inverses.

Claims (13)

  1. Rouleau élargisseur ayant un corps de base rigide et un revêtement (2) en matière élastique qui est appliqué sur celui-ci, comprenant des hélices (3, 4) opposées, caractérisé en ce que la surface du revêtement élastique (2) est rendue rugueuse par des cavités (3b), à savoir sous forme des deux hélices (3, 4) opposées, dans lequel les surfaces (5, 6) adjacentes aux hélices (3, 4) sont creusées en face de la surface des hélices (3, 4), une profondeur de 1 mm n'étant pas excédée.
  2. Rouleau élargisseur selon la revendication 1, dans lequel le revêtement élastique (2) appliqué sur le corps de base rigide a une épaisseur de jusqu'à 10 mm, de préférence de jusqu'à 5 mm.
  3. Rouleau élargisseur selon l'une des revendications précédentes, dans lequel les surfaces (3, 4) adjacentes aux hélices (3, 4) en face de la surface des hélices (3, 4) sont creusées, à savoir de 1/10 millimètre à 1 mm.
  4. Rouleau élargisseur selon l'une des revendications précédentes, dans lequel les cavités (3b) dans la surface rendue rugueuse ont toujours la même profondeur.
  5. Rouleau élargisseur selon l'une des revendications précédentes, dans lequel les surfaces creusées (5, 6) comprennent la même profondeur que celle des cavités (3b) de la surface rendue rugueuse.
  6. Rouleau élargisseur selon l'une des revendications précédentes comprenant une ou plusieurs rainures (13) dans la zone de surface rugueuse (3, 4) qui sont plus étroites que les surfaces creusées (5, 6) qui s'étendent autour du rouleau sous forme des hélices.
  7. Rouleau élargisseur selon l'une des revendications précédentes, dans lequel les surfaces (5, 6) adjacentes aux hélices (3, 4) comprennent une surface lisse.
  8. Rouleau élargisseur selon l'une des revendications précédentes, dans lequel le corps de base rigide est une gaine (1).
  9. Rouleau élargisseur selon la revendication précédente, dans lequel la gaine (1) est composée d'une matière artificielle renforcée par fibres.
  10. Rouleau élargisseur selon l'une des deux revendications précédentes, dans lequel la gaine (1) est assise sur un cylindre mère (7).
  11. Procédé de fabrication d'un rouleau élargisseur selon l'une des revendications précédentes, dans lequel on rend la surface élastique rugueuse ou on la structure sous forme d'hélices à l'aide d'un laser ou par affûtage.
  12. Procédé selon la revendication précédente, dans lequel on glisse une gaine (1) comprenant un revêtement de rouleau élargisseur (2, 3, 4) placé sur celle-ci sur un cylindre mère (7).
  13. Procédé de fabrication d'un rouleau selon l'une des deux revendications précédentes, dans lequel on rend la surface élastique rugueuse ou on la structure à l'aide d'un laser et on creuse les surfaces adjacentes (5, 6) dans une étape de travail.
EP09783560A 2008-10-08 2009-09-29 Rouleau à surface rugueuse Active EP2188429B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008042690A DE102008042690A1 (de) 2008-10-08 2008-10-08 Breitstreckwalze mit aufgerauter, wendelförmiger Oberfläche
PCT/EP2009/062628 WO2010040665A1 (fr) 2008-10-08 2009-09-29 Rouleau à surface rugueuse

Publications (2)

Publication Number Publication Date
EP2188429A1 EP2188429A1 (fr) 2010-05-26
EP2188429B1 true EP2188429B1 (fr) 2012-05-16

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EP09783560A Active EP2188429B1 (fr) 2008-10-08 2009-09-29 Rouleau à surface rugueuse

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EP (1) EP2188429B1 (fr)
DE (1) DE102008042690A1 (fr)
DK (1) DK2188429T3 (fr)
WO (1) WO2010040665A1 (fr)

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IT201600094253A1 (it) * 2016-09-20 2018-03-20 Ravizza Packaging S R L Macchina per il confezionamento di articoli entro involucri di materiale flessibile
US20220355501A1 (en) * 2021-05-04 2022-11-10 A. G. Stacker Inc. Front end conveyor with chad wall

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EP2188429A1 (fr) 2010-05-26
DE102008042690A1 (de) 2010-04-15
DK2188429T3 (da) 2012-06-18
WO2010040665A1 (fr) 2010-04-15

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