EP0656434A1 - Pressure roll for a spinning preparation machine - Google Patents

Pressure roll for a spinning preparation machine Download PDF

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Publication number
EP0656434A1
EP0656434A1 EP94118172A EP94118172A EP0656434A1 EP 0656434 A1 EP0656434 A1 EP 0656434A1 EP 94118172 A EP94118172 A EP 94118172A EP 94118172 A EP94118172 A EP 94118172A EP 0656434 A1 EP0656434 A1 EP 0656434A1
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EP
European Patent Office
Prior art keywords
coating
electrically conductive
roller according
printing roller
conductive material
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Granted
Application number
EP94118172A
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German (de)
French (fr)
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EP0656434B1 (en
Inventor
Heinz Clement
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Publication of EP0656434A1 publication Critical patent/EP0656434A1/en
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G19/00—Combing machines
    • D01G19/06—Details
    • D01G19/14—Drawing-off and delivery apparatus
    • D01G19/18—Roller, or roller and apron, devices, e.g. operating to draw-off fibres continuously
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/74—Rollers or roller bearings
    • D01H5/80—Rollers or roller bearings with covers; Cots or covers

Definitions

  • the invention relates to a pressure roller for a spinning preparation machine, for cooperation with a counter roller for moving fiber material, with a roller core and a coating of rubber-elastic material attached to the roller core.
  • Such pressure rollers are usually used in spinning preparation machines, e.g. Combing machines and draw frames, used in different places.
  • the pressure rollers each cooperate with a driven counter roller in the machine in order to remove fiber material, e.g. Fiber material in the form of a fleece.
  • fiber material e.g. Fiber material in the form of a fleece.
  • a certain improvement can be achieved by painting the peripheral surface of the pressure roller with a suitable paint.
  • the usual paint finishes however, have an insufficient lifespan; the printing rollers have to be sanded and repainted after a relatively short operating time.
  • the object of the invention is to design the printing roller specified at the outset in such a way that the risk of winding formation during operation is permanently reduced.
  • the pressure roller according to the invention is characterized by the addition of finely distributed electrically conductive material at least in the region of the peripheral surface of the coating.
  • the finely divided electrically conductive material e.g. metal powder and / or graphite powder, is used to derive electrostatic charges from the peripheral surface of the coating of the pressure roller.
  • the conductive material can be distributed throughout the rubber-elastic material of the cover of the pressure roller.
  • the circumferential surface of the coating has a coating made of dirt-repellent, wear-resistant plastic, in particular polytetrafluoroethylene, which contains finely divided, electrically conductive material.
  • a coating should be flexible and have a smaller thickness than the cover made of rubber-elastic material, for example a thickness of about 0.5 to 1 mm. So that electrostatic charges can be dissipated from the coating to the machine frame, the coating can be electrically conductively connected to bearing journals carried by the roller core, which are at least partially made of metal.
  • this electrically conductive connection could be produced by the fact that the rubber-elastic material of the cover also contains finely divided electrically conductive material. Instead, it is also possible to pull the coating inwards over the end faces of the coating, up to the peripheral surfaces of the bearing pins. This latter type of electrically conductive connection can also be used if the roller body is not made of metal (but instead of fiber composite material, for example).
  • the bearing pins can consist of metal or at least have circumferential surfaces coated with metal.
  • an electrically conductive element that is in contact with the peripheral surface of the coating (or the cover) can also be used, e.g. a rotatable metal roller or a Scrapers of metal.
  • the pressure rollers shown each contain a roller core 1, which carries bearing pins 2 at its ends.
  • the bearing pins 2 can be formed in one piece with the roller core 1 or can be inserted therein.
  • a covering 3 made of rubber-elastic material is arranged on the circumference of the roller core 1.
  • the coating 3 in turn has a coating 4 made of a dirt-repellent, wear-resistant plastic, preferably of polytetrafluoroethylene (“Teflon”), on its peripheral surface.
  • the pressure roller is intended for use in a spinning preparation machine (not shown), e.g. in a combing machine or a line in which the pressure roller interacts with a counter roller 5.
  • the counter roller 5 is rotatably and drivably mounted in the frame of the machine, not shown.
  • the pressure roller 1, 2, 3, 4 is pressed down by a loading device, also not shown, against the counter roller 5 in order to remove fiber material, e.g. to clamp a nonwoven fabric to be moved by the rotation of the counter roller 5 on the counter roller.
  • the coating 4 contains an electrically conductive material, e.g. Metal powder and / or graphite powder.
  • the coating 4 is electrically conductively connected to the bearing pins 2, which are at least partially made of metal, so that the resulting charges can be derived from the machine frame.
  • This electrically conductive connection can be made, for example, in such a way that the end faces of the cover 3 and the roller core 1 also carry an electrically conductive coating which connects the coating 4 to the peripheral surface of the bearing journal 2.
  • the bearing pins 2 are usually made entirely of metal; but they can also consist of another material, for example fiber composite material, and can only be coated with metal on their peripheral surfaces.
  • the roller core 1 can also consist of metal, and in such a case the aforementioned electrically conductive connection from the coating 4 to the bearing journal 2 can also be produced in such a way that the coating 3 made of rubber-elastic material also contains finely divided electrically conductive material.
  • the coating 4 of the coating 3 is omitted.
  • the rubber-elastic material of the cover 3 itself contains finely divided electrically conductive material.
  • the coating 3 thus consists, for example, of silicone plastic, in particular silicone rubber, in which metal and / or graphite powder is finely distributed.
  • the circumferential surface of the coating 4 is in contact with a rotatable roller 6 made of metal, which transfers electrical charges from the coating to the machine frame.
  • a wiper 7 made of metal is arranged in contact with the peripheral surface of the coating.
  • the coating 4 (or the coating 3) can also be mixed with other additives, in particular chalk powder.

Abstract

The pressure roller possesses a roller core (1) and a covering (3) attached to the roller core (1) and consisting of elastomeric material. It is characterised by an addition of finely distributed electrically conductive material, for example metal powder, at least in the region of the circumferential surface of the covering (3). The electrically conductive material can be contained in a coating (4) arranged on the circumferential surface of the covering (3). The pressure roller is intended for cooperation with a drivable counter-roller (5) for the movement of fibre material. The addition of electrically conductive material counteracts electrostatic charges, primarily when the charges may be derived, and thus reduces the risk that fibres from the fibre material to be moved are wound on to the pressure roller during operation. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Druckwalze für eine Spinnereivorbereitungsmaschine, zum Zusammenwirken mit einer Gegenwalze für das Bewegen von Fasermaterial, mit einem Walzenkern und einem auf dem Walzenkern angebrachten Ueberzug aus gummielastischem Material.The invention relates to a pressure roller for a spinning preparation machine, for cooperation with a counter roller for moving fiber material, with a roller core and a coating of rubber-elastic material attached to the roller core.

Solche Druckwalzen werden üblicherweise in Spinnereivorbereitungsmaschinen, z.B. Kämmaschinen und Strecken, an verschiedenen Stellen verwendet. Die Druckwalzen wirken jeweils mit einer angetriebenen Gegenwalze in der Maschine zusammen, um Fasermaterial, z.B. Fasermaterial in Vliesform, zu bewegen. Dabei besteht stets die Gefahr, dass sich Fasern aus dem Fasermaterial auf die Druckwalze wickeln, was zu Störungen und zum Abstellen der Maschine führen kann. Ausserdem entstehen dadurch im Fasermaterial, insbesondere an den Rändern desselben, ungleichmässige Stellen. Diese Gefahr von Wickelbildungen auf der Druckwalze wird vergrössert durch elektrostatische Aufladungen sowie auch durch Verschmutzung der Umfangsfläche der Druckwalze im Laufe der Zeit.Such pressure rollers are usually used in spinning preparation machines, e.g. Combing machines and draw frames, used in different places. The pressure rollers each cooperate with a driven counter roller in the machine in order to remove fiber material, e.g. Fiber material in the form of a fleece. There is always a risk that fibers from the fiber material will wind on the pressure roller, which can lead to malfunctions and to the machine being switched off. In addition, this creates uneven spots in the fiber material, especially at the edges thereof. This risk of winding formation on the printing roller is increased by electrostatic charges and also by contamination of the peripheral surface of the printing roller over time.

Eine gewisse Verbesserung kann durch Lackieren der Umfangsfläche der Druckwalze mit einem geeigneten Lack erreicht werden. Die üblichen Lackierungen haben jedoch eine ungenügende Lebensdauer; die Druckwalzen müssen schon nach relativ kurzer Betriebszeit abgeschliffen und wieder neu lackiert werden.A certain improvement can be achieved by painting the peripheral surface of the pressure roller with a suitable paint. The usual paint finishes, however, have an insufficient lifespan; the printing rollers have to be sanded and repainted after a relatively short operating time.

Die Aufgabe der Erfindung besteht darin, die eingangs angegebene Druckwalze so auszubilden, dass die Gefahr von Wickelbildungen im Betrieb dauerhaft verringert ist.The object of the invention is to design the printing roller specified at the outset in such a way that the risk of winding formation during operation is permanently reduced.

Die erfindungsgemässe Druckwalze, mit der die Aufgabe gelöst wird, ist gekennzeichnet durch einen Zusatz von fein verteiltem elektrisch leitendem Material wenigstens im Bereich der Umfangsfläche des Ueberzuges.The pressure roller according to the invention, with which the object is achieved, is characterized by the addition of finely distributed electrically conductive material at least in the region of the peripheral surface of the coating.

Das fein verteilte elektrisch leitende Material, z.B. Metallpulver und/oder Graphitpulver, dient dazu, elektrostatische Aufladungen von der Umfangsfläche des Ueberzuges der Druckwalze abzuleiten.The finely divided electrically conductive material, e.g. metal powder and / or graphite powder, is used to derive electrostatic charges from the peripheral surface of the coating of the pressure roller.

Das leitende Material kann im ganzen gummielastischen Material des Ueberzuges der Druckwalze verteilt sein.The conductive material can be distributed throughout the rubber-elastic material of the cover of the pressure roller.

In einer bevorzugten Ausführungsform der Erfindung trägt die Umfangsfläche des Ueberzuges eine Beschichtung aus schmutzabweisendem, verschleissfestem Kunststoff, insbesondere Polytetrafluorethylen, welche fein verteiltes elektrisch leitendes Material enthält. Eine solche Beschichtung sollte biegsam sein und eine geringere Dicke haben als der Ueberzug aus gummielastischem Material, beispielsweise eine Dicke von etwa 0,5 bis 1 mm. Damit elektrostatische Aufladungen von der Beschichtung zum Maschinengestell abgeleitet werden können, kann die Beschichtung mit vom Walzenkern getragenen Lagerzapfen, welche mindestens zum Teil aus Metall bestehen, elektrisch leitend verbunden sein. Wenn der ganze Walzenkern samt angeformten Lagerzapfen aus Metall besteht, könnte diese elektrisch leitende Verbindung dadurch hergestellt sein, dass auch das gummielastische Material des Ueberzuges fein verteiltes elektrisch leitendes Material enthält. Stattdessen ist es auch möglich, die Beschichtung über die Stirnseiten des Ueberzuges nach innen zu ziehen, bis zu den Umfangsflächen der Lagerzapfen. Diese letztere Art der elektrisch leitenden Verbindung kann auch angewandt werden, wenn der Walzenkörper nicht aus Metall besteht (sondern beispielsweise aus Faserverbundwerkstoff). Die Lagerzapfen können dabei aus Metall bestehen oder wenigstens mit Metall beschichtete Umfangsflächen aufweisen. Zum Ableiten von elektrostatischen Aufladungen von der Beschichtung (oder von der Umfangsfläche des Ueberzuges aus gummielastischem Material) kann aber auch ein mit der Umfangsfläche der Beschichtung (bzw. des Ueberzuges) in Berührung stehendes, elektrisch leitendes Element verwendet werden, z.B. eine drehbare Metallwalze oder ein Abstreifer aus Metall.In a preferred embodiment of the invention, the circumferential surface of the coating has a coating made of dirt-repellent, wear-resistant plastic, in particular polytetrafluoroethylene, which contains finely divided, electrically conductive material. Such a coating should be flexible and have a smaller thickness than the cover made of rubber-elastic material, for example a thickness of about 0.5 to 1 mm. So that electrostatic charges can be dissipated from the coating to the machine frame, the coating can be electrically conductively connected to bearing journals carried by the roller core, which are at least partially made of metal. If the entire roller core, including the integrally formed bearing journal, is made of metal, this electrically conductive connection could be produced by the fact that the rubber-elastic material of the cover also contains finely divided electrically conductive material. Instead, it is also possible to pull the coating inwards over the end faces of the coating, up to the peripheral surfaces of the bearing pins. This latter type of electrically conductive connection can also be used if the roller body is not made of metal (but instead of fiber composite material, for example). The bearing pins can consist of metal or at least have circumferential surfaces coated with metal. To discharge electrostatic charges from the coating (or from the peripheral surface of the cover made of rubber-elastic material), an electrically conductive element that is in contact with the peripheral surface of the coating (or the cover) can also be used, e.g. a rotatable metal roller or a Scrapers of metal.

Ausführungsbeispiele der Erfindung werden nachstehend anhand der Zeichnungen näher erläutert. In den Zeichnungen zeigen:

  • Fig. 1 in einer schematischen perspektivischen Ansicht eine Druckwalze, die mit einer Gegenwalze zusammenwirkt, und
  • Fig. 2 und Fig. 3 in ähnlichen Ansichten wie Fig. 1 je eine Variante.
Embodiments of the invention are explained below with reference to the drawings. The drawings show:
  • Fig. 1 is a schematic perspective view of a pressure roller, which cooperates with a counter roller, and
  • Fig. 2 and Fig. 3 in views similar to Fig. 1 each a variant.

Die dargestellten Druckwalzen enthalten jeweils einen Walzenkern 1, der an seinen Enden Lagerzapfen 2 trägt. Die Lagerzapfen 2 können mit dem Walzenkern 1 einstückig ausgebildet sein oder in diesen eingesetzt sein. Auf dem Umfang des Walzenkerns 1 ist ein Ueberzug 3 aus gummielastischem Material angeordnet. Der Ueberzug 3 trägt seinerseits auf seiner Umfangsfläche eine Beschichtung 4 aus einem Schmutzabweisenden, verschleissfesten Kunststoff, vorzugsweise aus Polytetrafluorethylen ("Teflon").The pressure rollers shown each contain a roller core 1, which carries bearing pins 2 at its ends. The bearing pins 2 can be formed in one piece with the roller core 1 or can be inserted therein. A covering 3 made of rubber-elastic material is arranged on the circumference of the roller core 1. The coating 3 in turn has a coating 4 made of a dirt-repellent, wear-resistant plastic, preferably of polytetrafluoroethylene ("Teflon"), on its peripheral surface.

Die Druckwalze ist zur Verwendung in einer Spinnereivorbereitungsmaschine (nicht dargestellt) bestimmt, z.B. in einer Kämmaschine oder einer Strecke, in der die Druckwalze mit einer Gegenwalze 5 zusammenwirkt. Die Gegenwalze 5 ist im nicht gezeigten Gestell der Maschine drehbar und antreibbar gelagert. Die Druckwalze 1, 2, 3, 4 wird von einer ebenfalls nicht gezeigten Belastungseinrichtung nach unten gegen die Gegenwalze 5 gedrückt, um Fasermaterial, z.B. ein Faservlies, das durch die Drehung der Gegenwalze 5 bewegt werden soll, auf die Gegenwalze zu klemmen.The pressure roller is intended for use in a spinning preparation machine (not shown), e.g. in a combing machine or a line in which the pressure roller interacts with a counter roller 5. The counter roller 5 is rotatably and drivably mounted in the frame of the machine, not shown. The pressure roller 1, 2, 3, 4 is pressed down by a loading device, also not shown, against the counter roller 5 in order to remove fiber material, e.g. to clamp a nonwoven fabric to be moved by the rotation of the counter roller 5 on the counter roller.

Um im Betrieb elektrostatische Aufladungen, die zu einem Aufwickeln von Fasern aus dem Fasermaterial auf die Druckwalze führen könnten, möglichst zu vermeiden, enthält die Beschichtung 4 fein verteilt ein elektrisch leitendes Material, z.B. Metallpulver und/oder Graphitpulver.In order to avoid electrostatic charges which could lead to fibers from the fiber material being wound onto the printing roller during operation, the coating 4 contains an electrically conductive material, e.g. Metal powder and / or graphite powder.

In Fig. 1 ist die Beschichtung 4 mit den Lagerzapfen 2, die wenigstens zum Teil aus Metall bestehen, elektrisch leitend verbunden, damit entstehende Aufladungen zum Maschinengestell abgeleitet werden können. Diese elektrisch leitende Verbindung kann beispielsweise so hergestellt sein, dass auch die Stirnseiten des Ueberzuges 3 und des Walzenkerns 1 eine elektrisch leitende Beschichtung tragen, welche die Beschichtung 4 mit der Umfangsfläche des Lagerzapfens 2 verbindet. Die Lagerzapfen 2 bestehen in der Regel ganz aus Metall; sie können aber auch aus einem anderen Material bestehen, z.B. aus Faser-verbundwerkstoff, und lediglich an ihren Umfangsflächen mit Metall beschichtet sein.In FIG. 1, the coating 4 is electrically conductively connected to the bearing pins 2, which are at least partially made of metal, so that the resulting charges can be derived from the machine frame. This electrically conductive connection can be made, for example, in such a way that the end faces of the cover 3 and the roller core 1 also carry an electrically conductive coating which connects the coating 4 to the peripheral surface of the bearing journal 2. The bearing pins 2 are usually made entirely of metal; but they can also consist of another material, for example fiber composite material, and can only be coated with metal on their peripheral surfaces.

Der Walzenkern 1 kann ebenfalls aus Metall bestehen, und in einem solchen Fall kann die genannte elektrisch leitende Verbindung von der Beschichtung 4 zu den Lagerzapfen 2 auch so hergestellt sein, dass der Ueberzug 3 aus gummielastischem Material ebenfalls fein verteiltes elektrisch leitendes Material enthält.The roller core 1 can also consist of metal, and in such a case the aforementioned electrically conductive connection from the coating 4 to the bearing journal 2 can also be produced in such a way that the coating 3 made of rubber-elastic material also contains finely divided electrically conductive material.

In einer abgewandelten Ausführungsform der erfindungsgemässen Druckwalze ist die Beschichtung 4 des Ueberzuges 3 weggelassen. Dafür enthält das gummielastische Material des Ueberzuges 3 selbst fein verteiltes elektrisch leitendes Material. Der Ueberzug 3 besteht also beispielsweise aus Silicon-Kunststoff, insbesondere Silicon-Kautschuk, in welchem Metall- und/oder Graphitpulver fein verteilt ist.In a modified embodiment of the printing roller according to the invention, the coating 4 of the coating 3 is omitted. For this purpose, the rubber-elastic material of the cover 3 itself contains finely divided electrically conductive material. The coating 3 thus consists, for example, of silicone plastic, in particular silicone rubber, in which metal and / or graphite powder is finely distributed.

In der Ausführungsform gemäss Fig. 2 steht mit der Umfangsfläche der Beschichtung 4 eine drehbare Walze 6 aus Metall in Berührung, welche elektrische Ladungen von der Beschichtung zum Maschinengestell ableitet.In the embodiment according to FIG. 2, the circumferential surface of the coating 4 is in contact with a rotatable roller 6 made of metal, which transfers electrical charges from the coating to the machine frame.

In der Variante gemäss Fig. 3 ist zum gleichen Zweck, anstelle der Walze 6 von Fig. 2, ein Abstreifer 7 aus Metall in Berührung mit der Umfangsfläche der Beschichtung angeordnet.In the variant according to FIG. 3, for the same purpose, instead of the roller 6 from FIG. 2, a wiper 7 made of metal is arranged in contact with the peripheral surface of the coating.

Um die Laufeigenschaften zu verbessern, können der Beschichtung 4 (bzw. dem Ueberzug 3) auch noch weitere Zusatzstoffe beigemischt sein, insbesondere Kreidemehl.In order to improve the running properties, the coating 4 (or the coating 3) can also be mixed with other additives, in particular chalk powder.

Claims (10)

Druckwalze für eine Spinnereivorbereitungsmaschine, zum Zusammenwirken mit einer Gegenwalze für das Bewegen von Fasermaterial, mit einem Walzenkern (1) und einem auf dem Walzenkern angebrachten Ueberzug (3) aus gummielastischem Material, gekennzeichnet durch einen Zusatz von fein verteiltem elektrisch leitendem Material wenigstens im Bereich der Umfangsfläche des Ueberzuges (3).Pressure roller for a spinning preparation machine, for cooperation with a counter roller for moving fiber material, with a roller core (1) and a covering (3) made of elastic material, which is attached to the roller core, characterized by the addition of finely distributed electrically conductive material at least in the area of the Circumferential surface of the coating (3). Druckwalze nach Anspruch 1, dadurch gekennzeichnet, dass das elektrisch leitende Material ein Metallpulver und/oder Graphitpulver ist.Printing roller according to claim 1, characterized in that the electrically conductive material is a metal powder and / or graphite powder. Druckwalze nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Umfangsfläche des Ueberzuges (3) eine Beschichtung (4) trägt, welche fein verteiltes elektrisch leitendes Material enthält.Printing roller according to claim 1 or 2, characterized in that the peripheral surface of the coating (3) carries a coating (4) which contains finely divided electrically conductive material. Druckwalze nach Anspruch 3, dadurch gekennzeichnet, dass die Beschichtung (4) mit einem elektrisch leitenden Element (6; 7) in Kontakt steht.Printing roller according to claim 3, characterized in that the coating (4) is in contact with an electrically conductive element (6; 7). Druckwalze nach Anspruch 4, dadurch gekennzeichnet, dass das elektrisch leitende Element (6; 7) auf dem Umfang der Beschichtung (4) aufliegt.Printing roller according to claim 4, characterized in that the electrically conductive element (6; 7) rests on the circumference of the coating (4). Druckwalze nach Anspruch 3, dadurch gekennzeichnet, dass die Beschichtung (4) mit vom Walzenkern (1) getragenen Lagerzapfen (2), welche mindestens zum Teil aus Metall bestehen, elektrisch leitend verbunden ist.Printing roller according to Claim 3, characterized in that the coating (4) is connected in an electrically conductive manner to bearing journals (2) carried by the roller core (1) and which at least partially consist of metal. Druckwalze nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, dass die Beschichtung (4) aus einem schmutzabweisenden, verschleissfestem Kunststoff vorzugsweise einer Mischung von Polytetrafluorethylen-Kunstharz mit dem elektrisch leitenden Material besteht.Printing roller according to one of claims 3 to 6, characterized in that the coating (4) consists of a dirt-repellent, wear-resistant plastic, preferably a mixture of polytetrafluoroethylene synthetic resin with the electrically conductive material. Druckwalze nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das elektrisch leitende Material fein verteilt im gummielastischen Material des Ueberzuges (3) enthalten ist.Printing roller according to claim 1 or 2, characterized in that the electrically conductive material is finely divided in the rubber-elastic material of the cover (3). Druckwalze nach Anspruch 8, dadurch gekennzeichnet, dass das gummielastische Material des Ueberzuges (3) ein Silicon-Kunststoff ist.Printing roller according to claim 8, characterized in that the rubber-elastic material of the cover (3) is a silicone plastic. Druckwalze nach einem der Ansprüche 3 bis 7, dadurch gekennzeichnet, dass der Beschichtung (4) Kreidemehl beigemischt ist.Printing roller according to one of Claims 3 to 7, characterized in that chalk powder is added to the coating (4).
EP19940118172 1993-12-02 1994-11-18 Pressure roll for a spinning preparation machine Expired - Lifetime EP0656434B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3597/93 1993-12-02
CH359793 1993-12-02

Publications (2)

Publication Number Publication Date
EP0656434A1 true EP0656434A1 (en) 1995-06-07
EP0656434B1 EP0656434B1 (en) 1998-04-08

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EP19940118172 Expired - Lifetime EP0656434B1 (en) 1993-12-02 1994-11-18 Pressure roll for a spinning preparation machine

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EP (1) EP0656434B1 (en)
JP (1) JP3532269B2 (en)
CN (1) CN1042660C (en)
DE (1) DE59405636D1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997008368A1 (en) * 1995-08-31 1997-03-06 Armstrong Textile Products Gmbh Drafting system spinning roller for producing thread
DE19739185A1 (en) * 1997-09-08 1999-03-11 Truetzschler Gmbh & Co Kg Device on a spinning preparation machine, e.g. B. teasel, line with rotating smooth rollers
WO2024012936A1 (en) * 2022-07-14 2024-01-18 Oerlikon Textile Gmbh & Co. Kg Godet for conveying, transporting, and/or stretching a thread

Families Citing this family (3)

* Cited by examiner, † Cited by third party
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US7305739B2 (en) * 2004-09-15 2007-12-11 Celanese Acetate, Llc Apparatus for tow opening
CN102534827B (en) * 2011-11-15 2014-12-03 江西东华机械有限责任公司 Drafting roll for fiber spinning
CN103103648A (en) * 2012-12-10 2013-05-15 苏州尊元纺织有限公司 Resin roller of textile machinery

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1510416A1 (en) * 1965-11-12 1970-02-26 Alsacienne Constr Meca Stretching device in a long fiber combing machine
US3699766A (en) * 1970-12-15 1972-10-24 North American Rockwell Drafting cot assembly
US4512060A (en) * 1982-09-30 1985-04-23 Ppm, Inc. Apparatus and methods for aeromechanical and electrodynamic release and separation of foreign matter from fiber
JPH04153329A (en) * 1990-10-11 1992-05-26 Hara Shiyokuki Seisakusho:Kk Top roller
US5142759A (en) * 1991-08-27 1992-09-01 Beloit Corporation Roll cover apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1510416A1 (en) * 1965-11-12 1970-02-26 Alsacienne Constr Meca Stretching device in a long fiber combing machine
US3699766A (en) * 1970-12-15 1972-10-24 North American Rockwell Drafting cot assembly
US4512060A (en) * 1982-09-30 1985-04-23 Ppm, Inc. Apparatus and methods for aeromechanical and electrodynamic release and separation of foreign matter from fiber
JPH04153329A (en) * 1990-10-11 1992-05-26 Hara Shiyokuki Seisakusho:Kk Top roller
US5142759A (en) * 1991-08-27 1992-09-01 Beloit Corporation Roll cover apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 7247, Derwent World Patents Index; AN 72-74849T *
PATENT ABSTRACTS OF JAPAN vol. 16, no. 443 (C - 0985) 16 September 1992 (1992-09-16) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997008368A1 (en) * 1995-08-31 1997-03-06 Armstrong Textile Products Gmbh Drafting system spinning roller for producing thread
CN1070548C (en) * 1995-08-31 2001-09-05 戴氏国际公司 Drafting system spinning roller for producing thread
DE19739185A1 (en) * 1997-09-08 1999-03-11 Truetzschler Gmbh & Co Kg Device on a spinning preparation machine, e.g. B. teasel, line with rotating smooth rollers
WO2024012936A1 (en) * 2022-07-14 2024-01-18 Oerlikon Textile Gmbh & Co. Kg Godet for conveying, transporting, and/or stretching a thread

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JP3532269B2 (en) 2004-05-31
CN1042660C (en) 1999-03-24
DE59405636D1 (en) 1998-05-14
CN1130691A (en) 1996-09-11
EP0656434B1 (en) 1998-04-08
JPH07207532A (en) 1995-08-08

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