EP2176454B1 - Pressing roller for textile machines - Google Patents

Pressing roller for textile machines Download PDF

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Publication number
EP2176454B1
EP2176454B1 EP08786168A EP08786168A EP2176454B1 EP 2176454 B1 EP2176454 B1 EP 2176454B1 EP 08786168 A EP08786168 A EP 08786168A EP 08786168 A EP08786168 A EP 08786168A EP 2176454 B1 EP2176454 B1 EP 2176454B1
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EP
European Patent Office
Prior art keywords
ring
pressure roller
inner ring
elastic
carrying axle
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Not-in-force
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EP08786168A
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German (de)
French (fr)
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EP2176454A1 (en
Inventor
Detlef GÖRGENS
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Schaeffler Technologies AG and Co KG
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Schaeffler Technologies AG and Co KG
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Publication of EP2176454A1 publication Critical patent/EP2176454A1/en
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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H5/00Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70Constructional features of drafting elements
    • D01H5/74Rollers or roller bearings
    • D01H5/80Rollers or roller bearings with covers; Cots or covers
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H5/00Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70Constructional features of drafting elements
    • D01H5/74Rollers or roller bearings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Support Of The Bearing (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

A pressing roller (1) for textile machines comprises a supporting axle (2) and a cover (5) rotatably mounted relative to said axle with the interposition of a rolling bearing (3) having an inner race (6) and an outer race (7), wherein the inner race (6) is able to move with a limited degree of pivoting movement relative to the supporting axle (2). The inner race (6) is arranged on the supporting axle (2) with the interposition of one or more elastic rings (9, 10, 13, 30) which produce its pivoting movement.

Description

Gebiet der ErfindungField of the invention

Die Erfindung betrifft eine für Textilmaschinen, insbesondere Texturiermaschinen, geeignete Andruckrolle. Eine derartige Andruckrolle weist einen elastischen Bezug auf, der in einer Textilmaschine gegen eine angetriebene Walze gedrückt wird, wobei zwischen dieser Walze und dem Bezug ein Faden oder ein Faserstrang hindurchgeführt wird. Dieser wird damit entweder lediglich transportiert oder, wie in Spinn- oder Texturiermaschinen, auch verzogen.The invention relates to a textile machine, in particular texturing machines, suitable pressure roller. Such a pressure roller has an elastic cover, which is pressed in a textile machine against a driven roller, wherein between this roller and the cover, a thread or a fiber strand is passed. This is thus either merely transported or warped, as in spinning or texturing machines.

Hintergrund der ErfindungBackground of the invention

Eine Andruckrolle der eingangs genannten Art ist beispielsweise aus der DE 29 23 871 A1 bekannt. Es handelt sich hierbei um eine wälzgelagerte, einen elastischen Bezug tragende Druckrolle, wobei der Innenring des Wälzlagers oder ein den Innenring tragender Nabenring mittels eines quer zu seiner Achse verlaufenden Bolzens pendelnd auf einer Tragachse gelagert ist. Durch die pendelnde Lagerung des Wälzlager-Innenrings können insbesondere Durchbiegungen der der Andruckrolle gegenüberliegenden Walze ausgeglichen werden.A pinch roller of the type mentioned is for example from the DE 29 23 871 A1 known. It is a roller bearing, a resilient bearing pressure roller, wherein the inner ring of the bearing or a hub ring bearing the inner ring is mounted by means of a transverse to its axis bolt pendulum on a support shaft. Due to the oscillating mounting of the roller bearing inner ring, in particular deflections of the roller opposite the pressure roller can be compensated.

Aufgabe der ErfindungObject of the invention

Der Erfindung liegt die Aufgabe zugrunde, eine Andruckrolle für Textilmaschinen bei uneingeschränkter Funktionalität konstruktiv zu vereinfachen.The invention has for its object to simplify constructively a pinch roller for textile machines with full functionality.

Zusammenfassung der ErfindungSummary of the invention

Diese Aufgabe wird erfindungsgemäß gelöst durch eine Andruckrolle mit den Merkmalen des Anspruchs 1. Die zur Verwendung in Textilmaschinen, insbesondere Texturiermaschinen, vorgesehene Andruckrolle weist einen elastischen Bezug auf, der mittels eines Wälzlagers rotierbar auf einer Tragachse gelagert ist. Zum Ausgleich von Kippbewegungen des Innenrings des Wälzlagers relativ zur Tragachse ist zwischen der Tragachse und dem Innenring mindestens ein elastischer Ring, insbesondere aus einem Polymermaterial, angeordnet. Damit ist auf einfache und zuverlässige Weise eine Schwenkbeweglichkeit des Wälzlager-Innenrings um vorzugsweise 1,5° bis 5° gegeben.This object is achieved by a pinch roller having the features of claim 1. The for use in textile machines, in particular Texturing, provided pressure roller has an elastic reference, which is rotatably supported by means of a rolling bearing on a support shaft. To compensate for tilting of the inner ring of the rolling bearing relative to the support axis between the support shaft and the inner ring at least one elastic ring, in particular of a polymer material arranged. This is given in a simple and reliable manner, a pivoting movement of the roller bearing inner ring to preferably 1.5 ° to 5 °.

Gemäß einer ersten Variante sind mehrere elastische Ringe direkt oder indirekt zwischen der Tragachse und dem Innenring angeordnet. Hierbei sind die elastischen Ringe vorzugsweise als O-Ringe ausgebildet, wobei mindestens ein Ring in einer Nut an der Oberfläche der Tragachse einliegt. Im Gegensatz zur Tragachse weist der Innenring des Wälzlagers in vorteilhafter Ausgestaltung keine Nut auf, so dass hier keine Sonderkonstruktionen erforderlich sind. Zur Erzeugung von auf den Innenring wirkenden Axialkräften sind vorzugsweise gesonderte O-Ringe vorgesehen, welche - dem Innenring axial benachbart oder zumindest teilweise in Axialrichtung über den Innenring hinausragend - zwischen dem Innenring und jeweils einem auf der Tragachse gehaltenen Stützring angeordnet sind.According to a first variant, a plurality of elastic rings are arranged directly or indirectly between the support shaft and the inner ring. Here, the elastic rings are preferably formed as O-rings, wherein at least one ring rests in a groove on the surface of the support shaft. In contrast to the support shaft, the inner ring of the rolling bearing in an advantageous embodiment, no groove, so that no special constructions are required here. To generate axial forces acting on the inner ring, separate O-rings are preferably provided which are arranged axially adjacent to the inner ring or at least partially projecting beyond the inner ring in the axial direction between the inner ring and in each case one support ring held on the support shaft.

Der Stützring ist beispielsweise als auf die Tragachse aufgepresster Winkelring gestaltet. Ein derartiger Ring ist rationell alls spanlos umgeformtes Blechteil herstellbar. Alternativ kann der Stützring beispielsweise als spanend bearbeitetes Teil und/oder als integraler Bestandteil der Tragachse ausgebildet sein. Unabhängig vom Fertigungsverfahren weist nach einer besonders vorteilhaften Ausgestaltung eine einen elastischen Ring kontaktierende, dem Innenring zugewandte Oberfläche des Stützrings in Umfangsrichtung eine Wellenform mit zwei Wellenbergen und zwei Wellentälern auf. Damit ist eine Vorzugsrichtung gegeben, um welche der Innenring am leichtesten kippen kann.The support ring is designed, for example, as pressed onto the support shaft angle ring. Such a ring is rationally alls spanless transformed sheet metal part produced. Alternatively, the support ring may be formed, for example, as a machined part and / or as an integral part of the support shaft. Regardless of the manufacturing method, according to a particularly advantageous embodiment, an elastic ring contacting, the inner ring facing surface of the support ring in the circumferential direction has a waveform with two wave crests and two wave troughs. This is a preferred direction given by which the inner ring can tilt the easiest.

Nach einer zweiten Variante ist zwischen der Tragachse und dem Innenring lediglich ein einziger elastischer Ring angeordnet. Dieser ist jedoch nicht als O-Ring, sondern als komplexer geformtes Teil, welches in Axialrichtung breiter als der Innenring des Wälzlagers ist, ausgebildet. Die Oberfläche des elastischen Rings, auf welcher der Innenring aufliegt, beschreibt eine Sattelform, so dass auch in dieser Variante unter relativ geringer Krafteinwirkung ein Kippen des Wälzlagers um eine bestimmte, virtuelle Achse möglich ist, während das Wälzlager um eine hierzu orthogonale Achse nur unter wesentlich höherer Krafteinwirkung und/oder in geringerem Umfang kippbar ist.According to a second variant, only a single elastic ring is arranged between the support shaft and the inner ring. However, this is not as an O-ring, but as a complex shaped part, which is wider in the axial direction as the inner ring of the rolling bearing is formed. The surface of the elastic ring on which rests the inner ring, describes a saddle shape, so that in this variant under relatively little force tilting of the bearing about a specific, virtual axis is possible, while the roller bearing to an orthogonal axis only substantially below higher force and / or tilting to a lesser extent.

In jeder Variante ist mindestens ein elastischer Ring radial zwischen der Tragachse und dem Innenring angeordnet. Sofern diesem Ring weitere Ringe axial benachbart sind, welche ebenfalls der in radialer Richtung elastisch nachgiebigen Halterung des Innenrings auf der Tragachse dienen, wird die Kippbarkeit des Innenrings des Wälzlagers um die Tragachse dadurch begünstigt, dass der mittlere dieser drei Ringe den größten Querschnitt und/oder die größte Vorspannung aufweist. Eine weitere Verbesserung der Kippfunktion ist mit geölten oder befetteten O-Ringen erreichbar. In jedem Fall erfüllen die elastischen Ringe sowohl bei Belastungen in axialer Richtung als auch bei Belastungen in radialer Richtung eine Dämpfungsfunktion, die die maximale Gebrauchsdauer des Wälzlagers verlängert. Dies gilt auch für Ausführungsformen mit nur einem elastischen Ring.In each variant, at least one elastic ring is arranged radially between the support shaft and the inner ring. If this ring further axially adjacent rings, which also serve the elastically yielding support of the inner ring on the support shaft in the radial direction, the tiltability of the inner ring of the bearing about the support shaft is favored by the fact that the middle of these three rings the largest cross-section and / or has the largest bias. A further improvement of the tilting function can be achieved with oiled or greased O-rings. In any case, meet the elastic rings both under loads in the axial direction as well as loads in the radial direction of a damping function that extends the maximum service life of the bearing. This also applies to embodiments with only one elastic ring.

Nach einer vorteilhaften Weiterbildung ist das Wälzlager radial innerhalb eines Hülsenabschnitts eines Grundkörpers angeordnet, wobei der elastische Bezug der Andruckrolle auf dem Hülsenabschnitt des Grundkörpers gehalten ist. Radial zwischen dem Hülsenabschnitt und dem elastischen Bezug kann hierbei eine weitere, im Vergleich zum Bezug dünnwandige Hülse als Zwischenhülse vorgesehen sein. Letztgenannte Hülse sowie der Grundkörper sind bevorzugt als spanlos umgeformte Blechteile hergestellt. Ein Teil des Hülsenabschnitts ist vorzugsweise derart doppelwandig ausgebildet, dass ein Axialanschlag für den Außenring des Wälzlagers gebildet ist. Ausgehend vom Axialanschlag erstreckt sich in bevorzugter Ausgestaltung ein einstückig mit dem Hülsenabschnitt ausgebildeter Ringabschnitt des Grundkörpers konisch zum Ende der Tragachse zulaufend nach innen. Die vom Ringabschnitt begrenzte Öffnung im Grundkörper ist mit einer stirnseitig der Tragachse angeordneten Kappe verschließbar. Die mit dem elastischen Bezug rotierende Kappe ist soweit von der Stirnfläche der Tragachse beabstandet, dass eine Verkippung des gesamten Wälzlagers um eine gedachte Kippachse, welche orthogonal zur Tragachse verläuft, im erforderlichen Umfang, das heißt bis ca. 5°, möglich ist. Ebenso ist berücksichtigt, dass mittels des mindestens einen direkt oder indirekt auf der Tragachse angeordneten elastischen Rings auch eine zumindest geringfügige elastische Nachgiebigkeit des Wälzlagers und damit auch des Grundkörpers einschließlich des Hülsenabschnitts in axialer Richtung der Tragachse gegeben ist.According to an advantageous embodiment, the rolling bearing is arranged radially within a sleeve portion of a base body, wherein the elastic reference of the pressure roller is held on the sleeve portion of the base body. Radially between the sleeve portion and the elastic cover in this case a further, compared to the reference thin-walled sleeve can be provided as an intermediate sleeve. The latter sleeve and the base body are preferably produced as non-cutting formed sheet metal parts. A part of the sleeve portion is preferably formed double-walled such that an axial stop for the outer ring of the rolling bearing is formed. Starting from the axial stop extends in a preferred embodiment, an integrally formed with the sleeve portion ring portion of the body conically to the end of the support shaft tapering inward. The limited opening of the annular portion in the base body is closed with a front side of the support shaft arranged cap. The cap rotating with the elastic cover is far enough away from the end face of the carrying axle that a tilting of the entire rolling bearing about an imaginary tilting axis, which is orthogonal to the carrying axle, is possible to the required extent, that is to say approximately 5 °. Likewise, it is considered that by means of at least one elastic ring arranged directly or indirectly on the support axle, there is also given at least slight elastic compliance of the roller bearing and thus also of the base body including the sleeve portion in the axial direction of the support shaft.

Nachfolgend werden mehrere Ausführungsbeispiele der Erfindung anhand einer Zeichnung näher erläutert. Hierin zeigen:Several embodiments of the invention will be explained in more detail with reference to a drawing. Herein show:

Kurze Beschreibung der ZeichnungShort description of the drawing

Figur 1FIG. 1
in einer Schnittdarstellung ein erstes Ausführungsbeispiel einer Andruckrolle für eine Textilmaschine,in a sectional view of a first embodiment of a pressure roller for a textile machine,
Figur 2FIG. 2
einen Schnitt durch eine Tragachse der Andruckrolle nach Fi- gur 1,a section through a support shaft of the pressure roller according to Figure 1,
Figur 3FIG. 3
in einer Ansicht analog Figur 1 ein zweites Ausführungsbeispiel einer Andruckrolle für eine Textilmaschine,in a view analog FIG. 1 A second embodiment of a pressure roller for a textile machine,
Figur 4FIG. 4
ein Detail der Andruckrolle nach Figur 3 mit im Vergleich hierzu um 90° gedrehter Tragachse,a detail of the pinch roller after FIG. 3 with compared to this rotated by 90 ° support shaft,
Figur 5FIG. 5
ein drittes Ausführungsbeispiel einer Andruckrolle für eine Textil- maschine,A third embodiment of a pressure roller for a textile machine,
Figur 6FIG. 6
die Andruckrolle nach Figur 5 mit um 90° gedrehter Tragachse,the pressure roller after FIG. 5 with a rotation axis rotated by 90 °,
Figur 7FIG. 7
einen elastischen Ring der Andruckrolle nach Figur 5, undan elastic ring of the pressure roller after FIG. 5 , and
Figur 8FIG. 8
den elastischen Ring nach Figur 5 in um 90° gedrehter Ansicht.the elastic ring after FIG. 5 in 90 ° rotated view.
Ausführliche Beschreibung der ZeichnungenDetailed description of the drawings

Eine insgesamt mit den Bezugszeichen 1 gekennzeichnete Andruckrolle weist einen relativ zu einer Tragachse 2 mittels eines Wälzlagers 3 rotierbar gelagerten Grundkörper 4 auf, der einen elastischen Bezug 5, auch als Gummi-Bezug bezeichnet, trägt. Hinsichtlich der prinzipiellen Funktion der Andruckrolle 1 wird auf die DE 197 33 562 A1 verwiesen.A generally designated by the reference numeral 1 pinch roller has a relative to a support shaft 2 by means of a rolling bearing 3 rotatably mounted base body 4, which denotes an elastic cover 5, also referred to as rubber cover carries. With regard to the basic function of the pressure roller 1 is on the DE 197 33 562 A1 directed.

Das Wälzlager 3 ist als Radialrillenkugellager ausgebildet und weist einen Innenring 6 sowie einen Außenring 7 auf, zwischen welchen Kugeln 8 als Wälzkörper abrollen. Der Innenring 6 ist, wie im Folgenden näher beschrieben, mit Hilfe von fünf O-Ringen elastisch nachgiebig, insbesondere kippbar, auf der Tragsachse 2 gehalten.The rolling bearing 3 is designed as a radial ball bearing and has an inner ring 6 and an outer ring 7, between which balls 8 roll as rolling elements. The inner ring 6 is, as described in more detail below, with the aid of five O-rings elastically yielding, in particular tiltable, held on the support shaft 2.

In einer mittig durch die Wälzkörper 8 verlaufenden Ebene E, das heißt in der normal zur Tragachse 2 angeordneten Symmetrieebene des Wälzlagers 3, befindet sich radial zwischen der Tragachse 2 und dem Innenring 6 ein zentraler O-Ring 9 aus einem elastischen Polymermaterial. Axial neben dem zentralen elastischen Ring 9 ist spiegelsymmetrisch zur Ebene E jeweils ein elastischer Ring 10 angeordnet, welcher ebenfalls den Innenring 6 in radialer Richtung abstützt. Zusammenfassend werden die sich im selben axialen Bauraum wie der Innenring 6 befindenden elastischen Ringe 9, 10 auch als Radialringe bezeichnet. Die äußeren Radialringe 10 weisen einen geringeren Querschnitt als der zentrale Radialring 9 auf und liegen jeweils in einer an der Oberfläche der Tragachse 2 gebildeten Nut 11 ein. Der zentrale O-Ring 9 liegt in einer Nut 12 ein, welche in Anpassung an den größeren Querschnitt des zentralen O-Rings 9 tiefer als die Nuten 11 ist. Die Radialringe 9,10 sowie die Nuten 11,12 sind derart bemessen, dass die über den zentralen O-Ring 9 auf den Innenring 6 übertragenen Radialkräfte, zumindest so lange - wie in Figur 1 dargestellt - das Wälzlager 3 gegenüber der Tragachse 2 nicht verkippt ist, geringer sind als die über einen äußeren Radialring 10 übertragenen Radialkräfte.In a plane E running centrally through the rolling bodies 8, that is to say in the plane of symmetry of the rolling bearing 3 arranged normal to the supporting axle 2, a central O-ring 9 made of an elastic polymer material is located radially between the supporting shaft 2 and the inner ring 6. Axially next to the central elastic ring 9, an elastic ring 10 is arranged in mirror symmetry to the plane E, which also supports the inner ring 6 in the radial direction. In summary, located in the same axial space as the inner ring 6 elastic rings 9, 10 are also referred to as radial rings. The outer radial rings 10 have a smaller cross-section than the central radial ring 9 and are each in a groove 11 formed on the surface of the support shaft 2 a. The central O-ring 9 is located in a groove 12, which is deeper than the grooves 11 in adaptation to the larger cross-section of the central O-ring 9. The radial rings 9, 10 and the grooves 11, 12 are dimensioned such that the radial forces transmitted via the central O-ring 9 to the inner ring 6, at least as long as in FIG FIG. 1 shown - the rolling bearing 3 with respect to the support shaft 2 is not tilted, are less than the transmitted via an outer radial ring 10 radial forces.

Um dem Innenring 6 die erforderliche Stabilität in Axialrichtung bei gleichzeitiger Erhaltung der Kippfähigkeit zu geben, sind zwei als Axialringe bezeichnete elastische Ringe 13 vorgesehen, die jeweils einerseits den Innenring 6 in dessen radial innerem Bereich an einer Stirnseite 14 und andererseits einen Winkelring 15, 16 kontaktieren. Der erste Winkelring 15 umgibt eine Stirnfläche 17 der Tragachse 2, während der zweite Winkelring 16 auf der einem abgeflachten Befestigungsende 18 zugewandten Seite des Wälzlagers 3 angeordnet ist. Im Gegensatz zum stirnseitigen Winkelring 15, welcher in radialer Richtung nicht über den Innenring 6 hinausragt, erstreckt sich der so genannte anschlussseitige Winkelring 16 radial bis zum Außenring 7.In order to give the inner ring 6 the required stability in the axial direction while maintaining the Kippfähigkeit, two are referred to as axial rings elastic rings 13 are provided, each on the one hand the inner ring 6 in the radially inner region on an end face 14 and on the other hand an angular ring 15, 16 contact , The first angle ring 15 surrounds an end face 17 of the support shaft 2, while the second angle ring 16 is arranged on the side of the roller bearing 3 facing a flattened attachment end 18. In contrast to the end-side angle ring 15, which does not protrude beyond the inner ring 6 in the radial direction, the so-called connection-side angle ring 16 extends radially as far as the outer ring 7.

Der Außenring 7 ist in einen Hülsenabschnitt 19 des als Umformteil aus Blech gefertigten Grundkörpers 4 eingepresst. Der Hülsenabschnitt 19, auf welchem unter Zwischenschaltung einer Hülse 20 der elastische Bezug 5 der Andruckrolle 1 angeordnet ist, weist einen dem Befestigungsende 18 zugewandten einlagigen Abschnitt 21 sowie einen daran anschließenden doppelwandigen Abschnitt 22 auf. Am Übergang zwischen den Abschnitten 21, 22 ist ein Axialanschlag 23 für den Außenring 7 gebildet. An dieser Stelle geht der Hülsenabschnitt 19 in einen radial schräg nach innen verlaufenden Ringabschnitt 24 über. Die verbleibende zentrale Öffnung im Grundkörper 4 ist mit einem auf den Ringabschnitt 24 aufgeschnappten Deckel 25 auf Kunststoff verschlossen. Das Wälzlager 3 ist damit zur Stirnfläche 17 hin abgedichtet. Auf der gegenüberliegenden, dem Befestigungsende 18 zugewandten Seite ist ein Dichtring 26 zwischen dem Innenring 6 und dem Außenring 7 angeordnet. Eine zusätzliche Schutzfunktion ist durch den anschlussseitigen Winkelring 16 gegeben. Es ist damit keine Abdichtung erforderlich, welche die Verkippung zwischen dem Außenring 7 und Hülsenabschnitt 19 einerseits und der Tragachse 2 andererseits ausgleicht. Die Andruckrolle 1 nach den Figuren 1 und 2 ist für eine Krafteinleitung in Axialrichtung, das heißt in Längsrichtung der Tragachse 2, bis ca. 100 N geeignet.The outer ring 7 is pressed into a sleeve portion 19 of the manufactured as a formed part of sheet metal base 4. The sleeve portion 19, on which with the interposition of a sleeve 20 of the elastic cover 5 of the pressure roller 1 is arranged, has a fastening end 18 facing the single-layer portion 21 and an adjoining double-walled portion 22. At the transition between the sections 21, 22, an axial stop 23 is formed for the outer ring 7. At this point, the sleeve portion 19 merges into a radially obliquely inwardly extending annular portion 24. The remaining central opening in the base body 4 is closed with a snapped onto the ring portion 24 lid 25 on plastic. The rolling bearing 3 is thus sealed to the end face 17. On the opposite, the fastening end 18 side facing a sealing ring 26 between the inner ring 6 and the outer ring 7 is arranged. An additional protective function is given by the connection-side angle ring 16. It is thus no seal required, which compensates for the tilting between the outer ring 7 and sleeve portion 19 on the one hand and the support shaft 2 on the other. The pinch roller 1 after the Figures 1 and 2 is for a force in the axial direction, that is in the longitudinal direction of the support shaft 2, to about 100 N suitable.

Das Ausführungsbeispiel nach den Figuren 2 und 3 unterscheidet sich hauptsächlich durch die modifizierte Ausbildung der Winkelringe 15, 16 vom Ausführungsbeispiel nach Fig. 1: Die dem Innenring 6 zugewandte Oberfläche eines jeden Winkelrings 15, 16 weist in demjenigen Radialbereich, in welchem sich die Axialringe 13 befinden, einen in Umfangsrichtung variierenden axialen Abstand vom Innenring 6 auf, so dass eine Wellenform mit zwei um 180° versetzten Wellentälern 27 und zwei zwischen den Wellentälern 27 gebildeten Wellenbergen 28 gegeben ist. Im Querschnitt nach Fig. 3, in welchem die Wellentäler 27 sichtbar sind, üben die Axialringe 13 keine oder nur eine sehr geringe Axialkraft auf den Innenring 6 aus. Dagegen sind in dem in Fig. 4 sichtbaren Umfangsbereich, das heißt im Bereich eines Wellenbergs 28, die Axialringe 13 unter Vorspannung zwischen den Innenring 6 und den Axialring 13 eingepresst. Damit ist die Lage einer Kippachse K definiert, welche in Fig. 3 normal zur Zeichenebene verläuft und in Fig. 4 in der Zeichenebene liegt. Während das Wälzlager 3 um die Kippachse K innerhalb des vorgesehenen Winkelbereichs, das heißt bis ca. 5°, relativ leicht schwenkbar ist, ist eine Verschwenkung senkrecht zur Kippachse K kaum möglich. Durch die Lage einer Abflachung 29 an der Tragachse 2 ist die Lage der Kippachse K einfach erkennbar.The embodiment of the Figures 2 and 3 differs mainly by the modified design of the angle rings 15, 16 of the embodiment according to Fig. 1 The inner ring 6 facing surface of each angle ring 15, 16 has in that radial region in which the axial rings 13 are located, a circumferentially varying axial distance from the inner ring 6, so that a waveform with two offset by 180 ° wave troughs 27 and two formed between the troughs 27 wave crests 28 is given. In cross section Fig. 3 in which the wave troughs 27 are visible, the axial rings 13 exert no or only a very small axial force on the inner ring 6. In contrast, in the in Fig. 4 visible peripheral region, that is in the region of a wave crest 28, the axial rings 13 under bias between the inner ring 6 and the axial ring 13 is pressed. Thus, the position of a tilt axis K is defined, which in Fig. 3 normal to the drawing plane and in Fig. 4 lies in the drawing plane. While the rolling bearing 3 is relatively easy to pivot about the tilting axis K within the intended angular range, that is, to about 5 °, a pivoting perpendicular to the tilting axis K is hardly possible. Due to the location of a flattening 29 on the support shaft 2, the position of the tilting axis K is easily recognizable.

Im Ausführungsbeispiel nach den Figuren 4 bis 8 ist statt mehrerer elastischer Ringe 9, 10, 13 ein einziger elastischer Ring 30 zur nachgiebigen Halterung des Innenrings 6 auf der Tragachse 2 vorgesehen. Der elastische Ring 30 hat eine sattelförmige Oberfläche und weist auf jeder Stirnseite zwei um 180° versetzte, radial nach außen ragende Randerhebungen 31 auf, zwischen denen der Innenring 6 eingespannt ist. Die Funktion der Randerhebungen 31 entspricht grundsätzlich der Funktion der Wellenberge 28 im Ausführungsbeispiel nach den Figuren 3 und 4. Damit ist auch im Ausführungsbeispiel nach den Figuren 4 bis 8 eine bevorzugte Kippachse K des Wälzlagers 3 gegeben. Abweichend von der vereinfachten Darstellung nach den Figuren 4 bis 8 kann der elastische Ring 30 auch mehrteilig aufgebaut sein.In the embodiment of the FIGS. 4 to 8 instead of a plurality of elastic rings 9, 10, 13, a single elastic ring 30 is provided for the resilient retention of the inner ring 6 on the support shaft 2. The elastic ring 30 has a saddle-shaped surface and has on each end face two offset by 180 °, radially outwardly projecting Randerhebungen 31, between which the inner ring 6 is clamped. The function of the edge elevations 31 basically corresponds to the function of the wave peaks 28 in the exemplary embodiment according to FIGS FIGS. 3 and 4 , This is also in the embodiment of the FIGS. 4 to 8 a preferred tilting axis K of the rolling bearing 3 given. Deviating from the simplified representation of the FIGS. 4 to 8 the elastic ring 30 may also be constructed in several parts.

Gemeinsames Merkmal aller Ausführungsformen ist das Fehlen einer in Radialrichtung verlaufenden Bohrung in der Tragachse 2 sowie eines in eine solche Bohrung eingreifenden Bolzens oder Zapfens, welcher im Innenring 6 gehalten ist, um diesen kippbar auf der Tragachse 2 zu lagern. Statt dessen ist der Innenring 6 elastisch, insbesondere mit definierter Vorzugskipprichtung, gelagert und zugleich gegenüber der Tragachse 2 gedämpft.A common feature of all embodiments is the lack of a radially extending bore in the support shaft 2 and an engaging in such a bore bolt or pin, which is held in the inner ring 6 in order to store this tiltably on the support shaft 2. Instead, the inner ring 6 is elastic, in particular with a defined preferred tilt direction, mounted and at the same time damped with respect to the support shaft 2.

Bezugszeichenreference numeral

11
Andruckrollepinch
22
Tragachsecarrying axle
33
Wälzlagerroller bearing
44
Grundkörperbody
55
Bezugreference
66
Innenringinner ring
77
Außenringouter ring
88th
Kugelnroll
99
Ringring
1010
Ringring
1111
Nutgroove
1212
Nutgroove
1313
Ringring
1414
Stirnseitefront
1515
Winkelringangle ring
1616
Winkelringangle ring
1717
Stirnflächeface
1818
Befestigungsendeattachment end
1919
Hülsenabschnittsleeve section
2020
Hülseshell
2121
Abschnittsection
2222
Abschnittsection
2323
Axialanschlagaxial stop
2424
Ringabschnittring section
2525
Deckelcover
2626
Dichtringseal
2727
Wellentaltrough
2828
WellenbergWellenberg
2929
Abflachungflattening
3030
Ringring
3131
Randerhebungedge lift
Ee
Ebenelevel
KK
Kippachsetilt axis

Claims (22)

  1. Pressure roller (1) for textile machines, with a carrying axle (2) and with a covering (5) mounted rotatably in relation to the latter, with the interposition of a rolling bearing (3) having an inner ring (6) and an outer ring (7), the inner ring (6) being pivotally movable to a limited extent in relation to the carrying axle (2), characterized in that the inner ring (6) is arranged on the carrying axle (2), with the interposition of at least one elastic ring (9, 10, 13, 30) providing the pivotal movability of the said inner ring.
  2. Pressure roller (1) according to Claim 1, characterized in that a plurality of elastic rings (9, 10, 13) are arranged between the carrying axle (2) and the inner ring (6).
  3. Pressure roller (1) according to Claim 2, characterized in that at least one elastic ring (9, 10) is seated in a groove (11, 12) in the carrying axle (2).
  4. Pressure roller (1) according to Claim 2 or 3, characterized in that the elastic ring (9, 10, 13) is designed as an O-ring.
  5. Pressure roller (1) according to one of Claims 2 to 4, characterized in that a plurality of elastic rings (9, 10) are arranged radially between the carrying axle (2) and the inner ring (6).
  6. Pressure roller (1) according to Claim 5, characterized in that the elastic rings (9, 10) arranged radially between the carrying axle (2) and the inner ring (6) are dimensioned differently.
  7. Pressure roller (1) according to Claim 6, characterized in that a middle elastic ring (9) has a larger cross section than outer elastic rings (10, 13) axially adjacent to this.
  8. Pressure roller (1) according to one of Claims 2 to 7, characterized by elastic rings (13) axially adjacent to the inner ring (6).
  9. Pressure roller (1) according to Claim 8, characterized in that an elastic ring (13) axially adjacent to the inner ring (6) is supported on a supporting ring (15, 16) surrounding the carrying axle (2).
  10. Pressure roller (1) according to Claim 9, characterized in that the supporting ring (15, 16) is designed as an angle ring.
  11. Pressure roller (1) according to Claim 9 or 10, characterized in that a surface of the supporting ring (15, 16), the said surface facing the inner ring (6), has in the circumferential direction a wavy shape with two wave crests (28) and with two wave troughs (27).
  12. Pressure roller (1) according to Claim 1, characterized in that a single elastic ring (30) is arranged between the carrying axle (2) and the inner ring (6).
  13. Pressure roller (1) according to Claim 12, characterized in that the elastic ring (30) is wider in the axial direction than the inner ring (6).
  14. Pressure roller (1) according to Claim 12 or 13, characterized in that the elastic ring (30) has a saddle-shaped surface contacting the inner ring (6).
  15. Pressure roller (1) according to one of Claims 1 to 14, characterized in that the outer ring (7) is arranged within a sleeve portion (19) of a basic body (4) which is surrounded by the covering (5).
  16. Pressure roller (1) according to Claim 15, characterized in that the basic body (4) is designed as a sheet-metal part formed in a non-cutting manner.
  17. Pressure roller (1) according to Claim 15 or 16, characterized in that the sleeve portion (19) has a double-walled portion (22) which forms an axial stop (23) against which the outer ring (7) bears.
  18. Pressure roller (1) according to one of Claims 15 to 17, characterized in that the basic body (4) has an annular portion (24) which adjoins the sleeve portion (19), runs radially inwards and is axially adjacent to the rolling bearing (3).
  19. Pressure roller (1) according to Claim 18, characterized in that the annular portion (24) is at an axial distance from the rolling bearing (3) which increases from the outer ring (7) to the inner ring (6).
  20. Pressure roller (1) according to Claim 18 or 19, characterized in that the annular portion (24) is closed by means of a lid (25) placed in front of the carrying axle (2) in the axial direction.
  21. Pressure roller (1) according to one of Claims 1 to 20, characterized in that the inner ring (6), on account of its mounting by means of the at least one elastic ring (9, 10, 13, 30), is tiltable in relation to the carrying axle (2) through at least 1.5° and at most 5°.
  22. Use of a pressure roller (1) according to one of Claims 1 to 21 in a texturing machine.
EP08786168A 2007-08-08 2008-07-16 Pressing roller for textile machines Not-in-force EP2176454B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007037514A DE102007037514A1 (en) 2007-08-08 2007-08-08 Pinch roller for textile machines
PCT/EP2008/059269 WO2009019110A1 (en) 2007-08-08 2008-07-16 Pressing roller for textile machines

Publications (2)

Publication Number Publication Date
EP2176454A1 EP2176454A1 (en) 2010-04-21
EP2176454B1 true EP2176454B1 (en) 2011-05-25

Family

ID=39937349

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08786168A Not-in-force EP2176454B1 (en) 2007-08-08 2008-07-16 Pressing roller for textile machines

Country Status (5)

Country Link
EP (1) EP2176454B1 (en)
CN (1) CN101849050B (en)
AT (1) ATE510943T1 (en)
DE (1) DE102007037514A1 (en)
WO (1) WO2009019110A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU102815B1 (en) * 2021-06-01 2022-12-01 Rieter Components Germany Gmbh pinch roller

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010009467A1 (en) 2010-01-15 2011-07-21 Oerlikon Textile Components GmbH, 70736 Pressure roller for thread supply mechanism of textile machine, has roller bearing comprising inner ring that is provided with supporting groove for accommodating supporting ring, where supporting ring is clamped between groove and axle
CN101956259A (en) * 2010-10-18 2011-01-26 无锡源盛科技发展有限公司 Circumferentially adjustable leather roller of spinning machine
DE102012207140A1 (en) * 2012-04-27 2013-10-31 Schaeffler Technologies AG & Co. KG Arrangement for fastening support- or curved roller on holding element connected, has inner ring releasably connected with holding element in rotatable- and axially fixed manner, which is formed as receptacle sleeve to receive actuator pin

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Publication number Priority date Publication date Assignee Title
DE866321C (en) * 1937-06-02 1953-02-09 Freudenberg Carl Kg Sealing and holding device for the bearings of pressure rollers for spinning machines
DE2923871A1 (en) 1979-06-13 1980-12-18 Schaeffler Ohg Industriewerk Ball-bearing supported textile machine rubber-coated roller - fits shaft with complementary flats and pivots on bolt
DE19712417A1 (en) * 1997-03-25 1998-10-01 Schaeffler Waelzlager Ohg Pinch roller for textile machines
DE19733562A1 (en) 1997-08-02 1999-02-04 Schaeffler Waelzlager Ohg Press roll for texturising machine
DE19733563B4 (en) * 1997-08-02 2006-11-30 Schaeffler Kg Pinch roller for textile machines
JP3129276B2 (en) * 1998-03-05 2001-01-29 村田機械株式会社 Draft device top roller
DE10251597A1 (en) * 2002-11-06 2004-05-19 Texparts Gmbh Twin-disk seal, for the upper rollers at a sliver drawing unit for a spinner, are supported by at least one angle ring to keep them centered and under an axial pressure
CN2627017Y (en) * 2003-07-04 2004-07-21 如东特种轴承有限公司 Novel upper roller bearing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU102815B1 (en) * 2021-06-01 2022-12-01 Rieter Components Germany Gmbh pinch roller
WO2022253688A1 (en) * 2021-06-01 2022-12-08 Rieter Components Germany Gmbh Pressure roller

Also Published As

Publication number Publication date
WO2009019110A1 (en) 2009-02-12
CN101849050A (en) 2010-09-29
ATE510943T1 (en) 2011-06-15
DE102007037514A1 (en) 2009-02-12
EP2176454A1 (en) 2010-04-21
CN101849050B (en) 2011-12-07

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