EP0396216A2 - Guiding device for guiding webs, paricularly textile webs - Google Patents

Guiding device for guiding webs, paricularly textile webs Download PDF

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Publication number
EP0396216A2
EP0396216A2 EP90250107A EP90250107A EP0396216A2 EP 0396216 A2 EP0396216 A2 EP 0396216A2 EP 90250107 A EP90250107 A EP 90250107A EP 90250107 A EP90250107 A EP 90250107A EP 0396216 A2 EP0396216 A2 EP 0396216A2
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EP
European Patent Office
Prior art keywords
pressing device
hollow body
web
pressing
hub
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.)
Granted
Application number
EP90250107A
Other languages
German (de)
French (fr)
Other versions
EP0396216A3 (en
EP0396216B1 (en
Inventor
Heinz Dr.-Ing. Ortwein
Wolfgang Dipl.-Ing. Castagna
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Ifs Systembau Ingenieurges fur Sondermaschinen und Apparatebau Mbh
Original Assignee
Ifs Systembau Ingenieurges fur Sondermaschinen und Apparatebau Mbh
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Priority to AT90250107T priority Critical patent/ATE94503T1/en
Publication of EP0396216A2 publication Critical patent/EP0396216A2/en
Publication of EP0396216A3 publication Critical patent/EP0396216A3/en
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Publication of EP0396216B1 publication Critical patent/EP0396216B1/en
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    • 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
    • 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
    • B65H2404/131—Details of longitudinal profile shape
    • B65H2404/1312—Details of longitudinal profile shape tapered shape
    • 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
    • B65H2404/133—Limited number of active elements on common 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
    • B65H2404/18—Rollers composed of several layers
    • B65H2404/181—Rollers composed of several layers with cavities or projections at least at one layer

Definitions

  • the invention relates to a pressing device for guiding textile material webs or the like, consisting of a contact surface for the material web and at least two rotatable pressure elements associated therewith.
  • Such a pressing device is used to control the position of the material web and for the gentle spreading of the material web when it is withdrawn from a goods trough, from a stack or from a loop.
  • a pressing device of the generic type is previously known from US Pat. No. 4,068,789.
  • the contact surface consists of an spreader roller, which, starting from her Longitudinal median plane, is provided on both sides with symmetrically outward spiral spirals and which rotates against the direction of transport of the web.
  • the pressing elements are formed from brushes, the respective actuating devices for pressing the brushes against the spreader roller and thus for pressing the material web against the spreader roller are assigned.
  • the disadvantage here is that the material of the textile webs in particular, when pressed against the spreader roller, is subjected to considerable stress by means of the brushes, which can lead to the rejection of the length of the web claimed by the brushes.
  • the pressure brushes have hard bristles, since these can damage the web, in particular valuable fabrics, by tearing out individual threads.
  • the bristles of the brushes are either perpendicular to the surface or perpendicular to the axis of the pressure brush. If soft bristles are used to avoid the disadvantages of the harder bristles, it is disadvantageous that the bristles are bent against the spreader roller when the pressure is increased and then brush ineffectively over the web.
  • the invention is therefore based on the object of creating a pressing device of the generic type which on the one hand has a gentle effect on the web to be pressed and on the other hand actually causes an improved spreading effect or an improved aligning effect when the pressing force is increased.
  • each pressing element is formed from a rotatably mounted hub and a hollow body made of rubber-elastic material arranged thereon.
  • the experiments have shown that the interaction of a hollow body made of rubber-elastic material with a contact surface enables an excellent, gentle spreading and alignment of a web. If the pressure increases, the pressure surface of the hollow body made of rubber-elastic material on the contact surface increases, so that the spreading effect or the aligning effect can be increased. This is particularly the case when the contact surface is a smooth surface.
  • the hollow body is designed as a truncated cone and is connected to the hub with its edge region which is smaller in diameter, the edge region which is larger in diameter lying on the free side of the hub.
  • Such a pot-shaped pressure roller which is completely open on the larger diameter side, has the shape of a truncated cone, which is exactly the opposite of the previous pressure brushes and arranged obliquely to a smooth deflection surface.
  • an elliptical pressure surface is formed compared to a curved deflection surface, the surface of which increases as the pressure increases, so that the spreading effect or the aligning effect can be increased.
  • the smooth deflection surface is designed as a bent sheet metal or as a smooth roller, so that an expander roller which is expensive to produce is not necessary.
  • the pressure roller is designed in the manner of a pneumatic tire, the pressure properties of which, however, are harder than those of the frustoconical pressure roller.
  • the pressing device shown in FIGS. 1 to 3 comprises a smooth, cylindrical roller 1 as a bearing and deflecting surface for a web 2, which is moved according to the arrows 3, and two groups assigned to the roller 1 as pressing rollers 4 trained pressure elements which are mounted on swivel tubes 5 such that each group of pressure rollers 4 can be pressed against the roller 1 by means of an associated actuating device 6.
  • a detection device 7 for the position of the web 2 is connected downstream of the pressing device in the direction of movement of the web 2.
  • each pressure roller 4 consists of a hub 8 with a rim 9 which are freely rotatable on an axis 10.
  • the pressure roller 4 further comprises a hollow body 11 made of rubber-elastic material, which is designed as a truncated cone and is firmly connected to the rim 9 of the hub 8 with its edge region 12, which is smaller in diameter.
  • the edge region 12 has a V-belt-like inner reinforcement which is clamped in a correspondingly designed wedge-shaped groove in the rim 9.
  • the frustoconical hollow body 11 is completely free on the edge region which is larger in diameter and is freely deformable due to the rubber-elastic material.
  • each pressure roller 4 is mounted with its axis 10 in an arm 13 which can be actuated via the swivel tube 5 by one of the actuating devices 6 for pressing the pressure roller 4 against the roller 1.
  • the larger in diameter free edge area 14 of the pressure roller 4 is directed away from the arm 13 and lies at an angle of approximately 60 ° to the roller 1.
  • the free, open edge areas 14 of the two groups of pressure rollers 4 are directed towards each other, as is shown in Fig. 1.
  • one of the two groups of pressure rollers 4 is pressed against the roller 1 by means of the associated actuating device 6.
  • elliptical pressing surfaces are formed between the frustoconical shell of the hollow body 11 and the roller 1, the elliptical pressing surfaces increasing as the pressing force increases.
  • the hollow body 11 made of rubber-elastic material act softly and gently on the material of the web 2 rotating over the smooth roller 1, so that it can be aligned or spread without any risk of damage even to sensitive textile webs.
  • EPDM rubber in particular is used as the material for the hollow body 11 of the pressure rollers 4, the mixture of which is selected depending on the abrasion resistance, wear resistance, temperature resistance and resistance to chemicals.
  • the second embodiment of the pressure roller 4 ' is shown.
  • this 11 'circular, continuous openings 18 are arranged substantially in the free edge region in the hollow body. These are used to avoid slipping of the hollow body 4 'on wet textile webs (avoiding aquaplaning). Even during mercerization, the textiles are made smooth by lye treatment, so that the hollow body 11 provided with the openings 18 'can be used with particular advantage.
  • the third embodiment of the pressure roller 4 ⁇ is shown.
  • the hub 8 ⁇ rotatably mounted on the axis 10 ⁇ is provided with two rims 9 ⁇ .
  • the hollow body 11 ⁇ is designed as a tire with two edge regions of equal diameter, which are clamped in the rims 9 ⁇ .
  • the pressure roller 4 ⁇ is thus symmetrical. Their pressing properties are more audible than those of the cup-shaped and frustoconical pressing roller 4 in the first embodiment.
  • FIG. 5 shows a further embodiment of the deflection surface.
  • This is in the form of a smooth baffle 15, which has the shape of an aircraft wing with which a pressure roller 4 or 4 'cooperates.
  • Textile webs are made of woven or knitted material.
  • the fabric is regularly on the system surface and only needs to be aligned in the center.
  • the knitted fabric is often wrinkled on the contact surface and must be spread out, ie smoothed.
  • the pressing device described here works with particular advantage.
  • the function of the pressure device is as follows:
  • pressing elements 4,4' generate force components which extend transversely to the direction of movement (arrow 3) of the web 2 and namely are each directed towards the outer edges. In this way, a spreading or spreading effect of the web 2 is achieved.

Abstract

The invention relates to a pressure-applying device for guiding textile webs or the like, consisting of a contact surface for the web and of at least two rotatable pressing elements assigned to the latter. In the prior art, these are formed by brush rollers which, when hard bristles are used, damage the web and, when soft bristles are used, are not able to apply the necessary pressing force. For the purpose of spreading out and aligning a web in a manner which is kind on the material, the pressure-applying device is characterised according to the invention in that each pressing element 4,4' is formed by a rotatably mounted hub 8,8' and a hollow body 11,11' of rubber-elastic material arranged on said hub. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Andrückeinrichtung zum Führen von textilen Warenbahnen oder dergleichen, bestehend aus einer Anlagefläche für die Warenbahn und aus mindestens zwei dieser zugeordneten drehbaren Andrückelementen.The invention relates to a pressing device for guiding textile material webs or the like, consisting of a contact surface for the material web and at least two rotatable pressure elements associated therewith.

Eine derartige Andrückeinrichtung dient zur Lagensteuerung der Warenbahn und zur schonenden Ausbreitung der Warenbahn beim Abzug aus einer Warenmulde, von einem Stapel oder einer Schlaufe.Such a pressing device is used to control the position of the material web and for the gentle spreading of the material web when it is withdrawn from a goods trough, from a stack or from a loop.

Eine Andrückeinrichtung der gattungsgemäßen Art ist aus der US-PS 4,068,789 vorbekannt. Bei dieser besteht die Anlage­fläche aus einer Breitstreckwalze, die , ausgehend von ihrer Längsmittelebene, zu beiden Seiten hin mit symmetrisch nach außen verlaufenden spiralförmigen Wendeln versehen ist und die entgegen der Transportrichtung der Warenbahn umläuft. Die Andrückelemente sind aus Bürsten gebildet, deren jeweils Betätigungseinrichtungen zum Drücken der Bürsten gegen die Breitstreckwalze und damit zum Andrücken der Warenbahn an die Breitstreckwalze zugeordnet sind. Nachteilig hierbei ist, daß das Material der insbesondere textilen Warenbahnen beim Andrücken an die Breitstreck­walze mittels der Bürsten einer erheblichen Beanspruchung unterworfen wird, welche zum Ausschuß der von den Bürsten beanspruchten Länge der Warenbahn führen kann. Dies gilt insbesondere dann, wenn die Andrückbürsten harte Borsten haben, da diese die Warenbahn, insbesondere wertvorlle Gewebe, durch Herausreißen einzelner Fäden beschädigen können. Die Borsten der Bürsten stehen entweder senkrecht zur Mantelfläche oder senkrecht zur Achse der Andrück­bürste. Wenn nun zur Vermeidung der Nachteile der härteren Borsten weiche Borsten eingesetzt werden, so ist es bei diesen nachteilig, daß die weichen Borsten bei Erhöhung des Druckes gegen die Breitstreckwalze umgebogen werden und dann wirkungslos über die Warenbahn streichen.A pressing device of the generic type is previously known from US Pat. No. 4,068,789. In this, the contact surface consists of an spreader roller, which, starting from her Longitudinal median plane, is provided on both sides with symmetrically outward spiral spirals and which rotates against the direction of transport of the web. The pressing elements are formed from brushes, the respective actuating devices for pressing the brushes against the spreader roller and thus for pressing the material web against the spreader roller are assigned. The disadvantage here is that the material of the textile webs in particular, when pressed against the spreader roller, is subjected to considerable stress by means of the brushes, which can lead to the rejection of the length of the web claimed by the brushes. This applies in particular if the pressure brushes have hard bristles, since these can damage the web, in particular valuable fabrics, by tearing out individual threads. The bristles of the brushes are either perpendicular to the surface or perpendicular to the axis of the pressure brush. If soft bristles are used to avoid the disadvantages of the harder bristles, it is disadvantageous that the bristles are bent against the spreader roller when the pressure is increased and then brush ineffectively over the web.

Der Erfindung liegt von daher die Aufgabe zugrunde, eine Andrückeinrichtung der gattungsgemäßen Art zu schaffen, welche einerseits schonend auf die anzudrückende Waren­bahn einwirkt und welche andererseits bei Erhöhung der Andruckkraft tatsächlich auch eine verbesserte Ausbreit­wirkung bzw. eine verbesserte Ausrichtwirkung bewirkt.The invention is therefore based on the object of creating a pressing device of the generic type which on the one hand has a gentle effect on the web to be pressed and on the other hand actually causes an improved spreading effect or an improved aligning effect when the pressing force is increased.

Zur Lösung dieser Aufgabe sieht die Erfindung vor, daß jedes Andrückelement aus einer drehbar gelagerten Nabe und einem auf dieser angeordneten Hohlkörper aus gummi­elastischem Material gebildet ist.To achieve this object, the invention provides that each pressing element is formed from a rotatably mounted hub and a hollow body made of rubber-elastic material arranged thereon.

Die Versuche haben gezeigt, daß das Zusammenwirken eines Hohlkörpers aus gummielastischem Material mit einer Anlagefläche eine hervorragende schonende Ausbreitung und Ausrichtung einer Warenbahn ermöglicht. Bei einer Erhöhung des Andruckes vergrößert sich die Andrückfläche des Hohl­körpers aus gummielastischem Material an der Anlage­fläche, so daß damit die Ausbreitwirkung bzw. die Ausricht­wirkung erhöht werden kann. Dies wird insbesondere dann be­wirkt , wenn die Anlagefläche eine glatte Oberfläche ist . In der bevorzugten Ausführungsform ist der Hohlkörper als Kegelstumpf ausgebildet und mit seinem im Durchmesser kleineren Randbereich mit der Nabe verbunden, wobei der im Durchmesser größere Randbereich auf der freien Seite der Nabe liegt. Eine solche topfförmige Andrückrolle, die auf der im Durchmesser größeren Seite vollständig geöffnet ist, steht mit ihrer Kegelstumpfform genau umgekehrt zu den bisherigen Andrückbürsten und schräg zu einer glatten Umlenkfläche angeordnet. Bei normaler Andrück­kraft bildet sich gegenüber einer gebogenen Umlenkfläche eine ellipsenförmige Andruckfläche aus, deren Fläche sich bei Erhöhung des Andruckes vergrößert, so daß damit die Ausbreitwirkung bzw. die Ausrichtwirkung erhöht werden kann. In besonders bevorzugter Weise ist die glatte Umlenkfläche als gebogenes Blech oder als glatte Walze ausgebildet, so daß eine in der Herstellung teure Breitstreckwalze nicht erforderlich ist.The experiments have shown that the interaction of a hollow body made of rubber-elastic material with a contact surface enables an excellent, gentle spreading and alignment of a web. If the pressure increases, the pressure surface of the hollow body made of rubber-elastic material on the contact surface increases, so that the spreading effect or the aligning effect can be increased. This is particularly the case when the contact surface is a smooth surface. In the preferred embodiment, the hollow body is designed as a truncated cone and is connected to the hub with its edge region which is smaller in diameter, the edge region which is larger in diameter lying on the free side of the hub. Such a pot-shaped pressure roller, which is completely open on the larger diameter side, has the shape of a truncated cone, which is exactly the opposite of the previous pressure brushes and arranged obliquely to a smooth deflection surface. At normal pressure, an elliptical pressure surface is formed compared to a curved deflection surface, the surface of which increases as the pressure increases, so that the spreading effect or the aligning effect can be increased. In a particularly preferred manner, the smooth deflection surface is designed as a bent sheet metal or as a smooth roller, so that an expander roller which is expensive to produce is not necessary.

In der weiteren Ausführungsform ist die Andrückrolle nach Art eines Luftreifens ausgebildet, deren Andrückeigen­schaften jedoch härter sind als die der kegelstumpfförmigen Andrückrolle.In the further embodiment, the pressure roller is designed in the manner of a pneumatic tire, the pressure properties of which, however, are harder than those of the frustoconical pressure roller.

Die Erfindung ist nachfolgend anhand von zwei in den Zeichnungen dargestellten Ausführungsbeispielen von Andrück­einrichtungen näher erläutert. Es zeigen:

  • Fig. 1 eine Draufsicht auf die Andrückeinrichtung in der ersten Ausführungsform,
  • Fig. 2 eine Seitenansicht der Andrückeinrichtung,
  • Fig. 3 eine teilweise geschnitten dargestellte Seitenansicht einer Andrückrolle in der ersten Ausführungsform,
  • Fig. 4 eine teilweise geschnitten dargestellte Andrückrolle in der zweiten Ausführungsform,
  • Fig. 5 eine teilweise geschnitten dargestellte Andrückrolle in der dritten Ausführungsform und
  • Fig. 6 eine der Fig. 2 entsprechende Seitenansicht einer weiteren Ausführungsform der Andrück­einrichtung.
The invention is based on two in the Exemplary embodiments of pressing devices illustrated in the drawings are explained in more detail. Show it:
  • 1 is a plan view of the pressing device in the first embodiment,
  • 2 is a side view of the pressing device,
  • 3 is a partially sectioned side view of a pressure roller in the first embodiment,
  • 4 shows a pressure roller, shown partly in section, in the second embodiment,
  • Fig. 5 is a partially cut pressure roller shown in the third embodiment and
  • Fig. 6 is a side view corresponding to FIG. 2 of a further embodiment of the pressing device.

Die in den Figuren 1 bis 3 dargestellte Andrückeinrichtung gemäß der ersten Ausführungsform umfaßt eine glatte, zylindrische Walze 1 als Anlage - und Umlenkfläche für eine Warenbahn 2, die gemäß den Pfeilen 3 bewegt wird, sowie zwei Gruppen von der Walze 1 zugeordneten, als Andrückrollen 4 ausgebildeten Andrückelementen, die an Schwenkrohren 5 derart gelagert sind, daß jede Gruppe von Andrückrollen 4 mittels einer zugeordneten Betätigungseinrichtung 6 gegen die Walze 1 gedrückt werden kann. Der Andrückeinrichtung ist in Bewegungsrichtung der Warenbahn 2 eine Erkennungs­einrichtung 7 für die Lage der Warenbahn 2 nachgeschaltet.The pressing device shown in FIGS. 1 to 3 according to the first embodiment comprises a smooth, cylindrical roller 1 as a bearing and deflecting surface for a web 2, which is moved according to the arrows 3, and two groups assigned to the roller 1 as pressing rollers 4 trained pressure elements which are mounted on swivel tubes 5 such that each group of pressure rollers 4 can be pressed against the roller 1 by means of an associated actuating device 6. A detection device 7 for the position of the web 2 is connected downstream of the pressing device in the direction of movement of the web 2.

Jede Andrückrolle 4 besteht in der ersten Ausführungsform gemäß der Fig. 3 aus einer Nabe 8 mit einer Felge 9, die auf einer Achse 10 frei drehbar gelagert sind. Die Andrück­rolle 4 umfaßt ferner einen Hohlkörper 11 aus gummielastischem Material, der als Kegelstumpf ausgebildet und mit seinem im Durchmesser kleineren Randbereich 12 mit der Felge 9 der Nabe 8 festverbunden ist. Hierzu weist der Randbereich 12 eine keilriemenartige innere Verstärkung auf, die in einer entsprechend ausgebildeten keilförmigen Nut der Felge 9 eingespannt ist. Der kegelstumpfförmige Hohlkörper 11 ist auf dem im Durchmesser größeren Randbereich voll­ständig frei und aufgrund des gummielastischen Materials frei verformbar.In the first embodiment according to FIG. 3, each pressure roller 4 consists of a hub 8 with a rim 9 which are freely rotatable on an axis 10. The pressure roller 4 further comprises a hollow body 11 made of rubber-elastic material, which is designed as a truncated cone and is firmly connected to the rim 9 of the hub 8 with its edge region 12, which is smaller in diameter. For this purpose, the edge region 12 has a V-belt-like inner reinforcement which is clamped in a correspondingly designed wedge-shaped groove in the rim 9. The frustoconical hollow body 11 is completely free on the edge region which is larger in diameter and is freely deformable due to the rubber-elastic material.

Wie es die Fig. 1 zeigt, ist jede Andrückrolle 4 mit ihrer Achse 10 in einem Arm 13 gelagert, der über das Schwenkrohr 5 von einer der Betätigungseinrichtungen 6 zum Andrücken der Andrückrolle 4 gegen die Walze 1 betätigbar ist. Der im Durchmesser größere, freie Randbereich 14 der Andrück­rolle 4 ist vom Arm 13 weggerichtet und liegt unter einem Winkel von etwa 60° schräg zur Walze 1. Somit sind jeweils die freien, offenen Randbereiche 14 der beiden Gruppen von Andrückrollen 4 gegeneinander gerichtet, wie es in Fig. 1 dargestellt ist. Zum Ausbreiten der Warenbahn 2 oder zum Ausrichten der Warenbahn 2 gegenüber der in der Mitte verlau­fenden Achse³ wird eine der beiden Gruppen von Andrück­rollen 4 mittels der zugeordneten Betätigungseinrichtung 6 gegen die Walze 1 gedrückt. Hierbei bilden sich ellipsenförmige Andrückflächen zwischen dem kegelstumpfförmigen Mantel der Hohlkörper 11 und der Walze 1 aus, wobei die ellipsen­förmigen Andrückflächen sich vergrößern, wenn die Andrück­kraft zunimmt. Die Hohlkörper 11 aus gummielastischem Material wirken hierbei weich und schonend auf das über die glatte Walze 1 umlaufende Material der Warenbahn 2 ein, so daß diese ohne jegliche Gefahr von Beschädigungen auch empfind­licher textiler Warenbahnen ausgerichtet bzw. ausgebreitet werden kann.As shown in FIG. 1, each pressure roller 4 is mounted with its axis 10 in an arm 13 which can be actuated via the swivel tube 5 by one of the actuating devices 6 for pressing the pressure roller 4 against the roller 1. The larger in diameter free edge area 14 of the pressure roller 4 is directed away from the arm 13 and lies at an angle of approximately 60 ° to the roller 1. Thus, the free, open edge areas 14 of the two groups of pressure rollers 4 are directed towards each other, as is is shown in Fig. 1. To spread the web 2 or to align the web 2 with respect to the axis 3 running in the middle, one of the two groups of pressure rollers 4 is pressed against the roller 1 by means of the associated actuating device 6. Here, elliptical pressing surfaces are formed between the frustoconical shell of the hollow body 11 and the roller 1, the elliptical pressing surfaces increasing as the pressing force increases. The hollow body 11 made of rubber-elastic material act softly and gently on the material of the web 2 rotating over the smooth roller 1, so that it can be aligned or spread without any risk of damage even to sensitive textile webs.

Als Material für den Hohlkörper 11 der Andrückrollen 4 kommt insbesondere EPDM-Kautschuk zum Einsatz, dessen Mischung je nach Abriebfestigkeit, Verschleißfestigkeit, Temperaturbeständigkeit und Widerstandsfähigkeit gegen Chemikalien ausgewählt wird.EPDM rubber in particular is used as the material for the hollow body 11 of the pressure rollers 4, the mixture of which is selected depending on the abrasion resistance, wear resistance, temperature resistance and resistance to chemicals.

In der Fig. 4 ist die zweite Ausführungform der Andrück­rolle 4′ dargestellt. Bei dieser sind im Hohlkörper 11′ kreisförmige, durchgehende Öffnungen 18 im wesentlichen im freien Randbereich angeordnet. Diese dienen zur Ver­meidung des Rutschens des Hohlkörpers 4′ auf nassen textilen Warenbahnen ( Vermeidung eines Aquaplaning) . Auch beim Merzerisieren werden die Textilien durch Laugen­behandlung glatt, so daß sich der mit den Öffnungen 18 versehene Hohlkörper 11′ mit besonderem Vorteil einsetzen läßt.4, the second embodiment of the pressure roller 4 'is shown. In this 11 'circular, continuous openings 18 are arranged substantially in the free edge region in the hollow body. These are used to avoid slipping of the hollow body 4 'on wet textile webs (avoiding aquaplaning). Even during mercerization, the textiles are made smooth by lye treatment, so that the hollow body 11 provided with the openings 18 'can be used with particular advantage.

In der Fig. 6 ist die dritte Ausführungsform der Andrück­rolle 4˝ dargestellt. Bei dieser ist die auf der Achse 10˝ drehbar gelagerte Nabe 8˝ mit zwei Felgen 9˝ versehen. Der Hohlkörper 11˝ ist als Reifen mit zwei im Durchmesser gleich großen Randbereichen ausgebildet, die in die Felgen 9˝ eingespannt sind. Die Andrückrolle 4˝ ist somit symmetrisch ausgebildet. Ihre Andrückeigenschaften sind hörter als diejenigen der topfförmigen und kegelstumpf­förmigen Andrückrolle 4 in der ersten Ausführungsform.6, the third embodiment of the pressure roller 4˝ is shown. In this, the hub 8˝ rotatably mounted on the axis 10˝ is provided with two rims 9˝. The hollow body 11˝ is designed as a tire with two edge regions of equal diameter, which are clamped in the rims 9˝. The pressure roller 4˝ is thus symmetrical. Their pressing properties are more audible than those of the cup-shaped and frustoconical pressing roller 4 in the first embodiment.

Die Fig. 5 zeigt eine weitere Ausbildungsform der Umlenk­fläche. Diese ist in Form eines glatten Umlenkbleches 15 ausgebildet, das die Form einer Flugzeugtragfläche hat, mit welcher eine Andrückrolle 4 oder 4′ zusammenwirkt.5 shows a further embodiment of the deflection surface. This is in the form of a smooth baffle 15, which has the shape of an aircraft wing with which a pressure roller 4 or 4 'cooperates.

Textile Warenbahnen bestehen aus gewebtem oder gewirktem Material. Das Gewebe liegt regelmäßig auf der Anlage­ fläche und muß nur mittig ausgerichtet werden . Das Gewirke liegt jedoch häufig faltig auf der Anlagefläche und muß aus­gebreitet , d.h. geglättet werden .Hierbei arbeitet die beschriebene Andrückeinrichtung mit besonderem Vorteil .Textile webs are made of woven or knitted material. The fabric is regularly on the system surface and only needs to be aligned in the center. However, the knitted fabric is often wrinkled on the contact surface and must be spread out, ie smoothed. The pressing device described here works with particular advantage.

Die Funktion der Andrückeinrichtung ist folgende:The function of the pressure device is as follows:

Die mit ihren Achsen 10,10′ schräg zur Laufrichtung ( Pfeil 3 ) der Warenbahn 2 und ebenso schräg zur Längsachse der Walze 1 angeordneten Andrückelemente 4,4′ erzeugen Kraftkomponenten, die sich quer zur Bewegungs­richtung ( Pfeil 3 ) der Warenbahn 2 erstrecken und zwar jeweils zu deren Außenrändern hin gerichtet sind. Hierdurch wird eine Ausbreitwirkung bzw. Breitstreckwirkung der Warenbahn 2 erzielt. Durch die kegelige Ausbildung der Andrückelemente 4 gemäß der ersten Ausführungsform, wobei der im Durchmesser größere, freie Randbereich 14 des jeweiligen Hohlkörpers 11 in Richtung auf die Längsachse ( Pfeil 3 ) der Warenbahn 2 gerichtet ist, wird eine ellipsenförmige Andrückfläche zwischen dem kegelstumpfförmigen Hohlkörper 11 und der Walze 1 ausgebildet, wobei sich die ellipsenförmige Andrückfläche bei Zunahme der Andrückkraft vergrößert, wobei die spezifische Flächenbelastung etwa gleichbleibend ist. Entsprechendes gilt für die in der Figur 4 dargestellte zweite Ausführungsform.The with their axes 10,10 'obliquely to the direction of travel (arrow 3) of the web 2 and also obliquely to the longitudinal axis of the roller 1 arranged pressing elements 4,4' generate force components which extend transversely to the direction of movement (arrow 3) of the web 2 and namely are each directed towards the outer edges. In this way, a spreading or spreading effect of the web 2 is achieved. Due to the conical design of the pressing elements 4 according to the first embodiment, with the larger diameter free edge area 14 of the respective hollow body 11 being directed in the direction of the longitudinal axis (arrow 3) of the web 2, an elliptical pressing surface between the frustoconical hollow body 11 and of the roller 1, the elliptical pressing surface increasing with increasing pressing force, the specific surface load being approximately constant. The same applies to the second embodiment shown in FIG. 4.

Claims (8)

1. Andrückeinrichtung zum Führen von textilen Warenbahnen oder dergleichen,bestehend aus einer Anlagefläche für die Warenbahn und aus mindestens zwei dieser zugeordneten drehbaren Andrückelementen,
dadurch gekennzeichnet,
daß jedes Andrückelement (4,4′) aus einer drehbar gelagerten Nabe (8,8′) und einem an dieser angeordneten Hohlkörper (11,11′) aus gummielastischem Material gebildet ist.1. pressing device for guiding textile material webs or the like, consisting of a contact surface for the material web and at least two rotatable pressure elements assigned to it,
characterized,
that each pressing element (4,4 ') is formed from a rotatably mounted hub (8,8') and a hollow body arranged thereon (11,11 ') made of rubber-elastic material. 2. Andrückeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Hohlkörper (11) als Kegelstumpf ausgebildet ist und daß der im Durchmesser kleinere Randbereich (12) des Hohlkörpers (11) mit der Nabe (8) verbunden ist, wobei der im Durchmesser größere Randbereich (14) auf der freien Seite des Andrückelementes (4) liegt.2. pressing device according to claim 1, characterized in that the hollow body (11) is designed as a truncated cone and that the smaller in diameter edge region (12) of the hollow body (11) is connected to the hub (8), the larger diameter in the edge region (14) on the free side of the pressure element (4). 3. Andrückeinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Nabe (8) mit einer Felge (9) zum Einspannen des im Durchmesser kleineren Randbereiches (12) des Hohlkörpers (11) versehen ist.3. pressing device according to claim 1 or 2, characterized in that the hub (8) with a rim (9) for clamping the smaller in diameter edge region (12) of the hollow body (11) is provided. 4. Andrückeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Hohlkörper (11′) als Reifen mit zwei im Durchmesser gleich großen Randbereichen (12′) versehen ist und daß die Nabe (8′) mit zwei Felgen (9′) zum Einspannen der Randbereiche (12′) versehen ist.4. pressing device according to claim 1, characterized in that the hollow body (11 ') is provided as a tire with two edge portions of equal size (12') and that the hub (8 ') with two rims (9') for clamping the Edge areas (12 ') is provided. 5. Andrückeinrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß als gummielastisches Material EPDM-Kautschuk verwendet wird.5. pressing device according to one of claims 1 to 4, characterized in that EPDM rubber is used as the rubber-elastic material. 6. Andrückeinrichtung nach Anspruch 1 , dadurch gekenn­zeichnet , daß die Anlagefläche (1,15) eine Umlenkfläche mit glatter Oberfläche ist .6. Pressing device according to claim 1, characterized in that the contact surface (1,15) is a deflection surface with a smooth surface. 7. Andrückeinrichtung nach Anspruch 6, dadurch gekenn­zeichnet ,daß die Umlenkfläche eine zylindrische Walze (1) mit glatter Oberfläche ist .7. pressing device according to claim 6, characterized in that the deflecting surface is a cylindrical roller (1) with a smooth surface. 8. Andrückeinrichtung nach Anspruch 6, dadurch gekenn­zeichnet , daß die Umlenkfläche ein gebogenes Blech (15) mit glatter Oberfläche ist .8. pressing device according to claim 6, characterized in that the deflecting surface is a bent plate (15) with a smooth surface.
EP90250107A 1989-04-29 1990-04-30 Guiding device for guiding webs, paricularly textile webs Expired - Lifetime EP0396216B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90250107T ATE94503T1 (en) 1989-04-29 1990-04-30 GUIDE DEVICE FOR GUIDING WEBS OF GOODS, ESPECIALLY TEXTILE WEBS OF GOODS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3914732A DE3914732A1 (en) 1989-04-29 1989-04-29 PRESSURE DEVICE FOR GUIDING TEXTILE TRACKS OR THE LIKE
DE3914732 1989-04-29

Publications (3)

Publication Number Publication Date
EP0396216A2 true EP0396216A2 (en) 1990-11-07
EP0396216A3 EP0396216A3 (en) 1991-07-31
EP0396216B1 EP0396216B1 (en) 1993-09-15

Family

ID=6380083

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Application Number Title Priority Date Filing Date
EP90250107A Expired - Lifetime EP0396216B1 (en) 1989-04-29 1990-04-30 Guiding device for guiding webs, paricularly textile webs

Country Status (3)

Country Link
EP (1) EP0396216B1 (en)
AT (1) ATE94503T1 (en)
DE (2) DE3914732A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1215327A2 (en) * 2000-12-18 2002-06-19 Bassi Massimo Spreading roller for fabrics or the like
WO2014040871A1 (en) * 2012-09-11 2014-03-20 AFPT GmbH Pressure roller for depositing web-shaped semi-finished product

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69824223T2 (en) 1997-03-19 2004-09-30 Unilever N.V. Device for handling objects
DE20108043U1 (en) * 2001-05-12 2002-10-10 Kuesters Eduard Maschf Broad-drawing device
US8763665B2 (en) * 2011-06-13 2014-07-01 Spirit Aerosystems, Inc. Modular head automated fabric laminating apparatus
CN104260419A (en) * 2014-09-29 2015-01-07 任杰 Flattening device used for plastic bag production

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Publication number Priority date Publication date Assignee Title
DE1244517B (en) * 1961-11-22 1967-07-13 Vits G M B H Maschf Device for the straight guidance of a moving fabric web
DE2222361B1 (en) * 1972-05-06 1973-06-28 Guenther Dr-Ing Schick Spreading device for paper and film webs
US4068789A (en) * 1975-10-24 1978-01-17 Young Engineering, Inc. Method and apparatus for controlling a moving web

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Publication number Priority date Publication date Assignee Title
IT1068827B (en) * 1976-06-08 1985-03-21 Isotex Spa AUTOMATIC DEVICE FOR THE GUIDE OF THE FABRICS

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1244517B (en) * 1961-11-22 1967-07-13 Vits G M B H Maschf Device for the straight guidance of a moving fabric web
DE2222361B1 (en) * 1972-05-06 1973-06-28 Guenther Dr-Ing Schick Spreading device for paper and film webs
US4068789A (en) * 1975-10-24 1978-01-17 Young Engineering, Inc. Method and apparatus for controlling a moving web

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1215327A2 (en) * 2000-12-18 2002-06-19 Bassi Massimo Spreading roller for fabrics or the like
EP1215327A3 (en) * 2000-12-18 2004-04-28 Bassi Massimo Spreading roller for fabrics or the like
WO2014040871A1 (en) * 2012-09-11 2014-03-20 AFPT GmbH Pressure roller for depositing web-shaped semi-finished product

Also Published As

Publication number Publication date
EP0396216A3 (en) 1991-07-31
ATE94503T1 (en) 1993-10-15
DE59002701D1 (en) 1993-10-21
DE3914732A1 (en) 1990-10-31
DE3914732C2 (en) 1991-07-18
EP0396216B1 (en) 1993-09-15

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