EP0675217B1 - Device for cleaning a rotor rotating in the rotor casing of a open-end spinning unit - Google Patents

Device for cleaning a rotor rotating in the rotor casing of a open-end spinning unit Download PDF

Info

Publication number
EP0675217B1
EP0675217B1 EP95103545A EP95103545A EP0675217B1 EP 0675217 B1 EP0675217 B1 EP 0675217B1 EP 95103545 A EP95103545 A EP 95103545A EP 95103545 A EP95103545 A EP 95103545A EP 0675217 B1 EP0675217 B1 EP 0675217B1
Authority
EP
European Patent Office
Prior art keywords
rotor
doctor
strip
cleaning
scraper
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.)
Expired - Lifetime
Application number
EP95103545A
Other languages
German (de)
French (fr)
Other versions
EP0675217A1 (en
Inventor
Hans Raasch
Helmuth Hensen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oerlikon Textile GmbH and Co KG
Original Assignee
W Schlafhorst AG and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by W Schlafhorst AG and Co filed Critical W Schlafhorst AG and Co
Publication of EP0675217A1 publication Critical patent/EP0675217A1/en
Application granted granted Critical
Publication of EP0675217B1 publication Critical patent/EP0675217B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H4/00Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/22Cleaning of running surfaces
    • D01H4/24Cleaning of running surfaces in rotor spinning

Definitions

  • the invention relates to a device for cleaning a Rotor housing of an open-end spinning unit rotating rotor, with a positionable in the fiber collection groove of the rotor Scraper.
  • DE 26 18 094 A1 contains a generic type in one automatic maintenance unit arranged cleaning device described that a retractable into the spinning rotor, to the Has contour of the fiber collecting groove adapted scraper element.
  • the scraper element is at the end of a rod attached.
  • the scraper element has one Injection device for liquid detergents. By such a device can mechanically collect the fiber groove cleaned and additionally a detergent-air mixture in be blown into the rotor.
  • the DE 39 11 946 A1 is especially for small ones Known rotor diameter designed cleaning device.
  • the the actual cleaning device is in a housing arranged, which is positioned in front of the open spin box.
  • a carrier is pivotally mounted within the housing, whose axis of rotation is offset from the rotor axis and acute-angled is inclined.
  • the carrier spatially has one Shape up that end that is filled with the cleaning tool when rotating around the axis describes a circular arc, which the Plane of the fiber collecting groove of the rotor intersects.
  • the Cleaning tool is in a forward motion through the rotor opening onto the part of the rotor to be cleaned delivered.
  • DE 37 15 934 A1 which is also of the generic type, is a Known cleaning device, the scraper at the end of the Piston rod of a pneumatic thrust piston gear arranged in the direction of the fiber collecting groove in the rotor one OE spinning unit is retractable.
  • the scraper points knife-like end part that extends into the fiber collecting groove is sufficient and in the knife level against the direction of rotation of the rotor is angled so that the front edge against the Direction of rotation of the rotor is inclined.
  • the formation of the scraper according to the invention has the advantage that the scraper when moving the cleaning device into the Rotor, regardless of its wear, automatically one optimal length that a scraper system in the ground the fiber collecting groove ensures. That way ensured that the scraper from the first to the last Cleaning process, regardless of the degree of pollution of the Spinning rotor, is consistently effective.
  • the scraper is preferably in the form of a band Wearing part designed so that the service life of such Cleaning facilities compared to known facilities is significantly extended. Since also the optimal length of the Scraper belt when entering the fiber collecting groove Control inspections can be automatically adjusted largely eliminated by the operating personnel or be significantly restricted. Overall will by the device according to the invention a considerable Relief of the machine personnel achieved.
  • the scraper belt with its Sliding device non-positively connected.
  • One under Spring force generated on the scraper belt pressure roller doing so between the scraper belt and the driven one Feed roller of the shifting device just as much friction as is necessary to ensure that the scraper belt is sufficiently firm in the To bring the fiber collecting groove of the spinning rotor to the system means to safely clean this critical area guarantee.
  • the feed roller if that Scraper belt has come into contact with the fiber collecting groove, slip freely under the scraper belt so that excessive Wear caused by excessive pressure is avoided.
  • the displacement device for Scraper belt made of a swivel lever Feed roller, a spring-loaded pressure roller and one connected to the swivel lever with its piston rod Pneumatic cylinder.
  • the Piston rod When extending or retracting the Piston rod becomes the feed roller clockwise or turned counterclockwise and takes it the friction between the feed roller and pressure roller clamped scraper belt in the respective direction of rotation of the Feed roller with.
  • the arrangement is like this hit that by the feed roller or Pneumatic cylinder initiated feed path of the scraper belt through the installation of the band tip in the fiber collecting groove is limited. That means the feed roller slips in the last one Stage of their rotation under the optimally retracted Scraper tape through.
  • Such training ensures on the one hand that the scraper band in the Fiber collecting groove is inserted, on the other hand prevents the contact pressure of the tape tip against the Fiber collecting groove wall becomes too large.
  • a stroke limiter is advantageous for this purpose provided that is designed such that the scraper in Feed direction can pass the stroke limiter unhindered, while it is in the reset direction after a certain distance clamped in the stroke limiter and thus blocked. Also in In this case, the feed roller can freely under the Slide the scraper belt through and into its starting position reach.
  • the fiber collecting groove of the rotor must be from adhering fiber dust and other dirt cleaned , otherwise it will not be possible to achieve a perfect spinning result is.
  • the cleaning head 5 is one Cleaning device shown in section. Of the Cleaning head 5 is one in front of the open rotor housing 1 Open-end rotor spinning unit positioned. Within the Rotor housing 1, a spinning rotor 2 is arranged. The spinning rotor 2 is, as is known and therefore not shown in detail, with its rotor axis 3 is supported on a running disk bearing and has a fiber collecting groove 4 in the area of its rotor head on.
  • the cleaning head 5 has one of on the outside of the rotor head adjustable drive device 6, Example of a rubber-tired drive wheel 7 and one (see Fig. 1) retractable into the fiber collecting groove 4 Cleaning device 8 on.
  • the cleaning device 8 is thereby as an extendable in the direction of fiber collecting groove 4 Scraper 9 trained.
  • the scraper 9 consists of a, in a memory 10 scraper belt 11, which by means of a shifting device 12 in the direction of the fiber collecting groove 4 can be extended or retracted.
  • the displacement device 12 consists of a controllable pneumatic cylinder 13, the piston rod 19 on a pivot lever 20 is connected.
  • the pivot lever 20 is in turn non-rotatably connected to a feed roller 14.
  • the scraper belt 11 is between the feed roller 14 and the pressure roller 15 non-positively clamped and is the extension of the piston rod 19 of the Pneumatic cylinder 13 in the direction of the fiber collecting groove 4 pushed out.
  • Actuating element for example one on the spring element 21 acting pressure screw may be provided.
  • the flexible, relatively thin scraper band 11 is on the output side supported in a guide channel 22 so that emigration or buckling of the scraper belt 11 when entering the Fiber collecting groove 4 is reliably prevented.
  • the filling status or the idling of the Scraper belt store 10 is operated by a sensor device 18 monitors, which is arranged at the output of the memory.
  • the Sensor device 18 can be used, for example, as a limit switch be formed with a pressure roller 25 on the Scraper belt 11 rests and one if there is no scraper belt Contact switches.
  • the displacement device 12 also has one Stroke limiter 17, which is constructed so that a unrestricted sliding of the scraper belt in the direction of the fiber collecting groove 4 is given while in the opposite direction pushing the scraper belt through the stroke limiter Is blocked.
  • the stroke limiter 17 is in turn longitudinally movable in a guide 24 of the cleaning device 5 stored; its displacement is the measure of the return path of the scraper belt 11.
  • the stroke limiter 17 can be different To have embodiments. For example, it is possible The scraper belt slides through in the reset direction To prevent the use of a clamping element 23.
  • Such one Clamping element can be used, for example, as a wedge element Eccentric roller or the like may be formed.
  • the cleaning head 5 is in front the opened rotor housing 1 in position.
  • the Pneumatic cylinder 13 is acted on via a line 24, so that its piston rod 19 extends and the pivot lever 20 in Relocated towards S.
  • the extension path of the scraper belt 11 is determined by the system the band tip 16 in the fiber collecting groove 4 limited.
  • the rotor 2 is driven by the drive device 6, that is, through the drive wheel lying on the outside of the rotor head 7 rotated slowly.
  • the material of the scraper belt 11 to Example, a relatively easily wearing plastic ensure that the tape tip 16 fits well to the shape of the Adjusting the fiber collecting groove and thus the entire fiber collecting groove is reliably cleaned.
  • a sensor device 18 indicates in good time if that in a scraper belt store 10 scraper belt 11 a Length has reached, which means that the scraper belt will soon be changed seems advisable.
  • the invention is not based on the above Embodiment limited, there are both in terms of Sliding device or its drive as well with regard to the stroke limiter or the scraper belt storage further, not described in the present application Embodiments conceivable without the inventive concept is left.
  • Essential to the invention is above all that when Retraction of the cleaning device into the rotor automatically the optimal length of the scraper belt is set.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Reinigen eines im Rotorgehäuse einer Offenend-Spinneinheit umlaufenden Rotors, mit einem in der Fasersammelrille des Rotors positionierbaren Schaber.The invention relates to a device for cleaning a Rotor housing of an open-end spinning unit rotating rotor, with a positionable in the fiber collection groove of the rotor Scraper.

Derartige Vorrichtungen sind durch zahlreiche Veröffentlichungen bekannt.Such devices are characterized by numerous Publications known.

In der DE 26 18 094 A1 ist beispielsweise eine gattungsgemäße in einer selbsttätigen Wartungseinheit angeordnete Reinigungsvorrichtung beschrieben, die ein in den Spinnrotor einfahrbares, an die Kontur der Fasersammelrille angepaßtes Schaberelement aufweist. Das Schaberelement ist dabei am Ende einer Stange befestigt. Außerdem weist das Schaberelement eine Einspritzeinrichtung für flüssige Reinigungsmittel auf. Durch eine solche Einrichtung kann die Fasersammelrille mechanisch gereinigt und zusätzlich ein Reinigungsmittel-Luftgemisch in den Rotor eingeblasen werden.DE 26 18 094 A1, for example, contains a generic type in one automatic maintenance unit arranged cleaning device described that a retractable into the spinning rotor, to the Has contour of the fiber collecting groove adapted scraper element. The scraper element is at the end of a rod attached. In addition, the scraper element has one Injection device for liquid detergents. By such a device can mechanically collect the fiber groove cleaned and additionally a detergent-air mixture in be blown into the rotor.

Durch die DE 39 11 946 A1 ist eine speziell für kleine Rotordurchmesser konzipierte Reinigungsvorrichtung bekannt. Die eigentliche Reinigungsvorrichtung ist dabei in einem Gehäuse angeordnet, das vor der geöffneten Spinnbox positioniert wird. Innerhalb des Gehäuses ist schwenkbar ein Träger gelagert, dessen Drehachse zur Rotorachse versetzt und spitzwinklig geneigt angeordnet ist. Der Träger weist räumlich eine solche Gestalt auf, daß das mit dem Reinigungswerkzeug besetzte Ende bei Drehung um die Achse einen Kreisbogen beschreibt, der die Ebene der Fasersammelrille des Rotors schneidet. Das Reinigungswerkzeug wird in einer vorwärtsgerichteten Bewegung durch die Rotoröffnung auf den zu reinigenden Teil des Rotors zugestellt.DE 39 11 946 A1 is especially for small ones Known rotor diameter designed cleaning device. The the actual cleaning device is in a housing arranged, which is positioned in front of the open spin box. A carrier is pivotally mounted within the housing, whose axis of rotation is offset from the rotor axis and acute-angled is inclined. The carrier spatially has one Shape up that end that is filled with the cleaning tool when rotating around the axis describes a circular arc, which the Plane of the fiber collecting groove of the rotor intersects. The Cleaning tool is in a forward motion through the rotor opening onto the part of the rotor to be cleaned delivered.

Des weiteren ist durch die ebenfalls gattungsgemäße DE 37 15 934 A1 eine Reinigungseinrichtung bekannt, deren Schaber endseitig an der Kolbenstange eines pneumatischen Schubkolbengetriebes angeordnet in Richtung der Fasersammelrille in den Rotor einer OE-Spinneinheit einfahrbar ist. Der Schaber weist ein messerartiges Endteil auf, das bis in die Fasersammelrille reicht und in der Messerebene derart entgegen der Drehrichtung des Rotors abgewinkelt ist, daß die Vorderkante gegen die Drehrichtung des Rotors geneigt verläuft.Furthermore, DE 37 15 934 A1, which is also of the generic type, is a Known cleaning device, the scraper at the end of the Piston rod of a pneumatic thrust piston gear arranged in the direction of the fiber collecting groove in the rotor one OE spinning unit is retractable. The scraper points knife-like end part that extends into the fiber collecting groove is sufficient and in the knife level against the direction of rotation of the rotor is angled so that the front edge against the Direction of rotation of the rotor is inclined.

In der DE 26 29 161 C2 sowie der DE 33 13 926 A1 sind außerdem Reinigungseinrichtungen für Rotorspinnvorrichtungen beschrieben, die rotierbar gelagerte Reinigungswerkzeuge aufweisen. Als Reinigungswerkzeuge finden Schabereinsätze Verwendung, die endseitig auf Spiralfedern positioniert sind. Während des Reinigungsvorganges legen sich die umlaufenden Schabereinsätze unter dem Einfluß der Massenfliehkräfte in die Rotorrille und reinigen diese von anhaltenden Schmutzpartikeln.In DE 26 29 161 C2 and DE 33 13 926 A1 are also Cleaning devices for rotor spinning devices described, the rotatably mounted cleaning tools exhibit. Scraper inserts are used as cleaning tools Use that are positioned at the ends on coil springs. During the cleaning process, the rotating ones lay down Scraper inserts under the influence of the centrifugal forces in the Rotor groove and clean it of persistent dirt particles.

Da die Position der Schabereinsätze aufgrund ihrer Anordnung auf den elastischen Spiralfedern radial verstellbar ist, wird Verschleißabrieb der Schabereinsätze automatisch ausgeglichen.Because the position of the scraper inserts due to their arrangement is radially adjustable on the elastic coil springs Wear abrasion of the scraper inserts is automatically compensated.

Eine solche elastische Lagerung der Reinigungswerkzeuge hat allerdings den Nachteil, daß die Gefahr besteht, daß die Schaberelemente bei festsitzenden Verunreinigungen ungenügend angestellt werden beziehungsweise zurückfedern. In diesen Fällen ist eine einwandreie Reinigung der Fasersammelrille des Spinnrotors nicht gewährleistet.Such an elastic mounting of the cleaning tools has however, the disadvantage that there is a risk that the Inadequate scraper elements for stuck impurities be employed or spring back. In these Cases is an impeccable cleaning of the fiber collecting groove of the Spinning rotor not guaranteed.

Ausgehend vom vorgenannten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine verbesserte Reinigungseinrichtung für Offenend-Rotorspinneinheiten zu schaffen.Starting from the aforementioned prior art, the Invention, the object of an improved Cleaning device for open-end rotor spinning units too create.

Diese Aufgabe wird erfindungsgemäß durch eine Vorrichtung gelöst, wie sie Gegenstand des Anspruches 1 ist.This object is achieved by a device solved as it is the subject of claim 1.

Die erfindungsgemäße Ausbildung des Schabers hat den Vorteil, daß der Schaber beim Einfahren der Reinigungseinrichtung in den Rotor, unabhängig von seinem Verschleißabrieb, automatisch eine optimale Länge annimmt, die eine Anlage des Schabers im Grund der Fasersammelrille gewährleistet. Auf diese Weise ist sichergestellt, daß der Schaber vom ersten bis zum letzten Reinigungsvorgang, unabhängig vom Verschmutzungsgrad des Spinnrotors, gleichbleibend wirksam ist.The formation of the scraper according to the invention has the advantage that the scraper when moving the cleaning device into the Rotor, regardless of its wear, automatically one optimal length that a scraper system in the ground the fiber collecting groove ensures. That way ensured that the scraper from the first to the last Cleaning process, regardless of the degree of pollution of the Spinning rotor, is consistently effective.

Vorzugsweise ist der Schaber dabei als bandartiges Verschleißteil ausgebildet, so daß die Standzeit derartiger Reinigungseinrichtungen gegenüber bekannten Einrichtungen deutlich verlängert wird. Da außerdem die optimale Länge des Schaberbandes beim Einfahren in die Fasersammelrille automatisch nachgestellt wird, können Kontrollinspektionen durch das Bedienpersonal weitestgehend entfallen beziehungsweise deutlich eingeschränkt werden. Insgesamt wird durch die erfindungsgemäße Vorrichtung eine erhebliche Entlastung des Maschinenpersonals erreicht.The scraper is preferably in the form of a band Wearing part designed so that the service life of such Cleaning facilities compared to known facilities is significantly extended. Since also the optimal length of the Scraper belt when entering the fiber collecting groove Control inspections can be automatically adjusted largely eliminated by the operating personnel or be significantly restricted. Overall will by the device according to the invention a considerable Relief of the machine personnel achieved.

In bevorzugter Ausführungsform ist das Schaberband mit seiner Verschiebeeinrichtung kraftschlüssig verbunden. Eine unter Federkraft auf dem Schaberband aufliegende Druckrolle erzeugt dabei zwischen dem Schaberband und der angetriebenen Vorschubwalze der Verschiebeeinrichtung gerade so viel Reibung wie notwendig ist, um das Schaberband ausreichend fest in der Fasersammelrille des Spinnrotors zur Anlage zu bringen, das heißt, um eine sichere Reinigung dieses kritischen Bereiches zu gewährleisten. Andererseits kann die Vorschubwalze, wenn das Schaberband in der Fasersammelrille zur Anlage gekommen ist, frei unter dem Schaberband durchrutschen, so daß überhöhter Verschleiß durch zu starken Andruck vermieden wird.In a preferred embodiment, the scraper belt with its Sliding device non-positively connected. One under Spring force generated on the scraper belt pressure roller doing so between the scraper belt and the driven one Feed roller of the shifting device just as much friction as is necessary to ensure that the scraper belt is sufficiently firm in the To bring the fiber collecting groove of the spinning rotor to the system means to safely clean this critical area guarantee. On the other hand, the feed roller, if that Scraper belt has come into contact with the fiber collecting groove, slip freely under the scraper belt so that excessive Wear caused by excessive pressure is avoided.

Vorzugsweise besteht die Verschiebeeinrichtung für das Schaberband aus einer, einen Schwenkhebel aufweisenden Vorschubwalze, einer federbeaufschlagten Druckrolle sowie einem mit seiner Kolbenstange an den Schwenkhebel angeschlossenen Pneumatikzylinder. Beim Aus- beziehungsweise Einfahren der Kolbenstange wird die Vorschubwalze im Uhrzeigersinn beziehungsweise im Gegenuhrzeigersinn gedreht und nimmt dabei über Reibschluß das zwischen Vorschubwalze und Druckrolle geklemmte Schaberband in der jeweiligen Drehrichtung der Vorschubwalze mit.Preferably, the displacement device for Scraper belt made of a swivel lever Feed roller, a spring-loaded pressure roller and one connected to the swivel lever with its piston rod Pneumatic cylinder. When extending or retracting the Piston rod becomes the feed roller clockwise or turned counterclockwise and takes it the friction between the feed roller and pressure roller clamped scraper belt in the respective direction of rotation of the Feed roller with.

In bevorzugter Ausführungsform ist die Anordnung dabei so getroffen, daß der durch die Vorschubwalze beziehungsweise den Pneumatikzylinder iniziierte Vorschubweg des Schaberbandes durch die Anlage der Bandspitze in der Fasersammelrille begrenzt wird. Das heißt, die Vorschubwalze rutscht im letzten Stadium ihrer Drehung unter dem optimal eingefahrenen Schaberband durch. Eine solche Ausbildung gewährleistet einerseits, daß das Schaberband vorschriftsmäßig in die Fasersammelrille eingeschoben ist, andererseits wird verhindert, daß der Anpreßdruck der Bandspitze an die Fasersammelrillenwandung zu groß wird. In a preferred embodiment, the arrangement is like this hit that by the feed roller or Pneumatic cylinder initiated feed path of the scraper belt through the installation of the band tip in the fiber collecting groove is limited. That means the feed roller slips in the last one Stage of their rotation under the optimally retracted Scraper tape through. Such training ensures on the one hand that the scraper band in the Fiber collecting groove is inserted, on the other hand prevents the contact pressure of the tape tip against the Fiber collecting groove wall becomes too large.

Im Interesse einer einwandfreien, automatischen Nachstellung ist außerdem vorgesehen, daß der Vorschubweg, den das Schaberband beim Einfahren der Reinigungsvorrichtung in den Rotor zurücklegt, länger ist als der Rückstellweg des Schaberbandes beim Zurückziehen der Reinigungseinrichtung. Vorteilhafterweise ist für diesen Zweck ein Hubbegrenzer vorgesehen, der derart gestaltet ist, daß das Schaberband in Vorschubrichtung den Hubbegrenzer ungehindert passieren kann, während es in Rückstellrichtung nach einer gewissen Wegstrecke im Hubbegrenzer geklemmt und damit blockiert wird. Auch in diesem Fall kann die Vorschubwalze ungehindert unter dem Schaberband durchrutschen und in ihre Ausgangsposition gelangen.In the interest of a flawless, automatic adjustment it is also provided that the feed path that the Scraper belt when moving the cleaning device into the Rotor travels longer than the return travel of the Scraper belt when pulling back the cleaning device. A stroke limiter is advantageous for this purpose provided that is designed such that the scraper in Feed direction can pass the stroke limiter unhindered, while it is in the reset direction after a certain distance clamped in the stroke limiter and thus blocked. Also in In this case, the feed roller can freely under the Slide the scraper belt through and into its starting position reach.

In Weiterbildung der Erfindung ist im Ausgangsbereich des Schaberbandspeichers eine Sensoreinrichtung angeordnet, die das Auslaufen des bandartigen Verschleißteiles detektiert, so daß das Bedienpersonal eingreifen und zu gegebener Zeit ein neues Schaberband einlegen kann. Auf diese Weise können Stillstandzeiten der Wartungseinheit oder Fehlfunktionen der Spinneinheiten aufgrund ungenügender Reinigung zuverlässig vermieden werden.In a development of the invention is in the output range of Scraper belt storage arranged a sensor device that the Leakage of the band-like wearing part is detected, so that the operating personnel intervene and a new one in due course Can insert scraper tape. That way you can Downtime of the maintenance unit or malfunction of the Reliable spinning units due to insufficient cleaning be avoided.

Weitere Einzelheiten der Erfindung sind einem nachfolgend anhand der Zeichnungen dargestellten Ausführungsbeispiele entnehmbar. Es zeigen:

Fig. 1
eine Seitenansicht einer vor einer OE-Rotorspinneinheit positionierten Reinigungseinrichtung im Schnitt,
Fig. 2
eine Draufsicht der in Fig. 1 dargestellten Reinigungseinrichtung,
Fig. 3
eine Draufsicht gemäß Schnitt III-III der Fig. 1.
Further details of the invention can be found in an exemplary embodiment shown below with reference to the drawings. Show it:
Fig. 1
2 shows a side view of a cleaning device positioned in front of an OE rotor spinning unit,
Fig. 2
2 shows a top view of the cleaning device shown in FIG. 1,
Fig. 3
a plan view according to section III-III of FIG. 1st

Beim Betrieb von Offenend-Rotorspinnmaschinen ist es üblich, vor dem Neuanspinnen einer Spinneinheit den Rotor zu reinigen. Insbesondere die Fasersammelrille des Rotors muß von anhaftendem Faserstaub und anderen Verschmutzungen gereinigt werden, da sonst kein einwandfrei es Spinnergebnis zu erzielen ist.When operating open-end rotor spinning machines, it is common to clean the rotor before re-spinning a spinning unit. In particular, the fiber collecting groove of the rotor must be from adhering fiber dust and other dirt cleaned , otherwise it will not be possible to achieve a perfect spinning result is.

Die im Bereich der Spinnmaschinen patroullierenden Wartungseinheiten, die auftretende Fadenbrüche selbstätig beseitigen, weisen daher eine Reinigungseinrichtung auf, mittels derer eine Reinigung des Rotors insbesondere seiner Fasersammelrille möglich ist.Those patrolling in the field of spinning machines Maintenance units, the occurring thread breaks automatically eliminate, therefore have a cleaning device, by means of which the rotor, in particular its cleaning Fiber collecting groove is possible.

In Fig. 1 ist der Reinigungskopf 5 einer solchen Reinigungseinrichtung im Schnitt dargestellt. Der Reinigungskopf 5 ist vor dem geöffneten Rotorgehäuse 1 einer Offenend-Rotorspinneinheit positioniert. Innerhalb des Rotorgehäuses 1 ist ein Spinnrotor 2 angeordnet. Der Spinnrotor 2 ist dabei, wie bekannt und daher nicht näher dargestellt, mit seiner Rotorachse 3 auf einer Laufscheiben-Lagerung abgestützt und weist im Bereich seines Rotorkopfes eine Fasersammelrille 4 auf.In Fig. 1, the cleaning head 5 is one Cleaning device shown in section. Of the Cleaning head 5 is one in front of the open rotor housing 1 Open-end rotor spinning unit positioned. Within the Rotor housing 1, a spinning rotor 2 is arranged. The spinning rotor 2 is, as is known and therefore not shown in detail, with its rotor axis 3 is supported on a running disk bearing and has a fiber collecting groove 4 in the area of its rotor head on.

Wie in Fig. 2 angedeutet, weist der Reinigungskopf 5 eine von außen an den Rotorkopf anstellbare Antriebseinrichtung 6, zum Beispiel ein gummibereiftes Antriebsrad 7 sowie eine (siehe Fig. 1) in die Fasersammelrille 4 einfahrbare Reinigungseinrichtung 8 auf. Die Reinigungseinrichtung 8 ist dabei als ein in Richtung Fasersammelrille 4 ausfahrbarer Schaber 9 ausgebildet. Der Schaber 9 besteht aus einem, in einem Speicher 10 bevorrateten Schaberband 11, das mittels einer Verschiebeeinrichtung 12 in Richtung Fasersammelrille 4 ausgefahren beziehungsweise eingefahren werden kann. As indicated in FIG. 2, the cleaning head 5 has one of on the outside of the rotor head adjustable drive device 6, Example of a rubber-tired drive wheel 7 and one (see Fig. 1) retractable into the fiber collecting groove 4 Cleaning device 8 on. The cleaning device 8 is thereby as an extendable in the direction of fiber collecting groove 4 Scraper 9 trained. The scraper 9 consists of a, in a memory 10 scraper belt 11, which by means of a shifting device 12 in the direction of the fiber collecting groove 4 can be extended or retracted.

Im Einzelnen besteht die Verschiebeeinrichtung 12 aus einem ansteuerbaren Pneumatikzylinder 13, dessen Kolbenstange 19 an einen Schwenkhebel 20 angeschlossen ist. Der Schwenkhebel 20 ist seinerseits drehfest mit einer Vorschubwalze 14 verbunden. Auf der Vorschubwalze 14 liegt eine durch ein Federelement 21 belastete Druckrolle 15 auf. Das Schaberband 11 ist zwischen der Vorschubwalze 14 und der Druckwalze 15 kraftschlüssig geklemmt und wird beim Ausfahren der Kolbenstange 19 des Pneumatikzylinders 13 in Richtung Fasersammelrille 4 ausgeschoben. Zum Einstellen des Auflagedruckes der Druckrolle 15 kann ein im Ausführungsbeispiel nicht dargestelltes Stellelement, zum Beispiel eine auf das Federelement 21 wirkende Druckschraube vorgesehen sein.In detail, the displacement device 12 consists of a controllable pneumatic cylinder 13, the piston rod 19 on a pivot lever 20 is connected. The pivot lever 20 is in turn non-rotatably connected to a feed roller 14. On the feed roller 14 there is a spring element 21 loaded pressure roller 15. The scraper belt 11 is between the feed roller 14 and the pressure roller 15 non-positively clamped and is the extension of the piston rod 19 of the Pneumatic cylinder 13 in the direction of the fiber collecting groove 4 pushed out. For setting the contact pressure of the pressure roller 15 can be a not shown in the embodiment Actuating element, for example one on the spring element 21 acting pressure screw may be provided.

Ausgangsseitig ist das biegsame, relativ dünne Schaberband 11 in einem Führungskanal 22 abgestützt, so daß ein Auswandern oder Ausknicken des Schaberbandes 11 beim Einfahren in die Fasersammelrille 4 zuverlässig verhindert wird.The flexible, relatively thin scraper band 11 is on the output side supported in a guide channel 22 so that emigration or buckling of the scraper belt 11 when entering the Fiber collecting groove 4 is reliably prevented.

Der Füllzustand beziehungsweise das Leerlaufen des Schaberbandspeichers 10 wird durch eine Sensoreinrichtung 18 überwacht, die am Ausgang des Speichers angeordnet ist. Die Sensoreinrichtung 18 kann beispielsweise als Endschalter ausgebildet sein, der mit einem Druckröllchen 25 auf dem Schaberband 11 aufliegt und bei fehlendem Schaberband einen Kontakt schaltet.The filling status or the idling of the Scraper belt store 10 is operated by a sensor device 18 monitors, which is arranged at the output of the memory. The Sensor device 18 can be used, for example, as a limit switch be formed with a pressure roller 25 on the Scraper belt 11 rests and one if there is no scraper belt Contact switches.

Die Verschiebeeinrichtung 12 weist des weiteren einen Hubbegrenzer 17 auf, der so konstruiert ist, daß ein ungehindertes Durchgleiten des Schaberbandes in Richtung auf die Fasersammelrille 4 gegeben ist, während in Gegenrichtung der Durchschub des Schaberbandes durch den Hubbegrenzer gesperrt ist. Der Hubbegrenzer 17 ist seinerseits längsbeweglich in einer Führung 24 der Reinigungseinrichtung 5 gelagert; sein Verschiebeweg ist das Maß für den Rückstellweg des Schaberbandes 11. Der Hubbegrenzer 17 kann verschiedene Ausführungsformen aufzuweisen. Es ist beispielsweise möglich, das Durchgleiten des Schaberbandes in Rückstellrichtung durch den Einsatz eines Klemmelementes 23 zu unterbinden. Ein solches Klemmelement kann beispielsweise als Keilelement, als Exzenterwalze oder dergleichen ausgebildet sein.The displacement device 12 also has one Stroke limiter 17, which is constructed so that a unrestricted sliding of the scraper belt in the direction of the fiber collecting groove 4 is given while in the opposite direction pushing the scraper belt through the stroke limiter Is blocked. The stroke limiter 17 is in turn longitudinally movable in a guide 24 of the cleaning device 5 stored; its displacement is the measure of the return path of the scraper belt 11. The stroke limiter 17 can be different To have embodiments. For example, it is possible The scraper belt slides through in the reset direction To prevent the use of a clamping element 23. Such one Clamping element can be used, for example, as a wedge element Eccentric roller or the like may be formed.

Funktion der Reinigungsvorrichtung:Function of the cleaning device:

Sobald die Wartungseinheit vor einer Spinneinheit positioniert und die Spinnbox geöffnet ist, wird der Reinigungskopf 5 vor dem geöffneten Rotorgehäuse 1 in Stellung gebracht. Der Pneumatikzylinder 13 wird über eine Leitung 24 beaufschlagt, so daß seine Kolbenstange 19 ausfährt und den Schwenkhebel 20 in Richtung S verlegt. Dadurch wird die drehfest mit dem Schwenkhebel 20 verbundene Vorschubwalze 14 im Uhrzeigersinn gedreht und das zwischen der Vorschubwalze 14 und der federbeaufschlagten Druckrolle 15 geklemmte Schaberband 11 kraftschlüssig in Richtung der Fasersammelrille 4 ausgeschoben. Der Ausschubweg des Schaberbandes 11 wird dabei durch Anlage der Bandspitze 16 in der Fasersammelrille 4 begrenzt. Gleichzeitig wird der Rotor 2 durch die Antriebseinrichtung 6, das heißt, durch das außen am Rotorkopf anliegende Antriebsrad 7 langsam gedreht. Das Material des Schaberbandes 11, zum Beispiel ein relativ leicht verschleißender Kunststoff, stellt dabei sicher, daß sich die Bandspitze 16 gut auf die Form der Fasersammelrille anpaßt und somit die gesamte Fasersammelrille zuverlässig gereinigt wird.As soon as the maintenance unit is positioned in front of a spinning unit and the spin box is open, the cleaning head 5 is in front the opened rotor housing 1 in position. Of the Pneumatic cylinder 13 is acted on via a line 24, so that its piston rod 19 extends and the pivot lever 20 in Relocated towards S. This makes the non-rotatable with the Swivel lever 20 connected feed roller 14 clockwise rotated between the feed roller 14 and the spring-loaded pressure roller 15 clamped scraper belt 11 pushed out non-positively in the direction of the fiber collecting groove 4. The extension path of the scraper belt 11 is determined by the system the band tip 16 in the fiber collecting groove 4 limited. At the same time, the rotor 2 is driven by the drive device 6, that is, through the drive wheel lying on the outside of the rotor head 7 rotated slowly. The material of the scraper belt 11 to Example, a relatively easily wearing plastic ensure that the tape tip 16 fits well to the shape of the Adjusting the fiber collecting groove and thus the entire fiber collecting groove is reliably cleaned.

Nach Beendigung des Reinigungsvorganges wird der Pneumatikzylinder 13 eingefahren und dadurch die Vorschubwalze 14 im Gegenuhrzeigersinn gedreht. Das bedeutet, das Schaberband 11 wird zurückgezogen. Der Hubbegrenzer 17 stellt dabei sicher, daß der Rückholweg des Schaberbandes 11 kleiner ist als dessen Vorschubweg. Auf diese Weise ist gewährleistet, daß das durch Verschleiß bedingte Einkürzen des Schaberbandes beim nächsten Ausschub automatisch ausgeglichen wird und beim Einfahren des Schaberbandes 11 in die Fasersammelrille des Spinnrotors die optimale Länge eingestellt wird.After the cleaning process is finished Pneumatic cylinder 13 retracted and thereby the feed roller 14 rotated counterclockwise. That means the scraper belt 11 is withdrawn. The stroke limiter 17 ensures that the return path of the scraper belt 11 is smaller than that Feed path. In this way it is ensured that the through Wear-related shortening of the scraper belt at the next one Extension is automatically compensated and when retracting the Scraper belt 11 in the fiber collecting groove of the spinning rotor optimal length is set.

Eine Sensoreinrichtung 18 zeigt dabei rechtzeitig an, wenn das in einem Schaberbandspeicher 10 bevorratete Schaberband 11 eine Länge erreicht hat, die ein baldiges Wechseln des Schaberbandes angeraten erscheinen läßt.A sensor device 18 indicates in good time if that in a scraper belt store 10 scraper belt 11 a Length has reached, which means that the scraper belt will soon be changed seems advisable.

Die Erfindung ist nicht auf das vorstehend beschriebene Ausführungsbeispiel beschränkt, es sind sowohl hinsichtlich der Verschiebeeinrichtung beziehungsweise deren Antrieb sowie hinsichtlich des Hubbegrenzers oder des Schaberbandspeichers weitere, in der vorliegenden Anmeldung nicht näher beschriebene Ausführungsformen denkbar, ohne daß der Erfindungsgedanke verlassen wird. Erfindungswesentlich ist vor allem, daß beim Einfahren der Reinigungseinrichtung in den Rotor automatisch die optimale Länge des Schaberbandes eingestellt wird.The invention is not based on the above Embodiment limited, there are both in terms of Sliding device or its drive as well with regard to the stroke limiter or the scraper belt storage further, not described in the present application Embodiments conceivable without the inventive concept is left. Essential to the invention is above all that when Retraction of the cleaning device into the rotor automatically the optimal length of the scraper belt is set.

Claims (9)

  1. Device for cleaning a rotor rotating in a rotor housing of an open end spinning unit, with a doctor which can be located in a predetermined position in the fibre collecting groove of the rotor, characterised in that the doctor (9) automatically assumes an optimum length when the cleaning arrangement (8) is driven into the rotor (2), regardless of its wear, so secure support for the doctor (9) in the bottom of the fibre collecting groove (4) is guaranteed.
  2. Device according to claim 1, characterised in that the doctor (9) is designed as a strip-like expendable part which is automatically driven out to the optimum length when the cleaning arrangement (8) is driven into the rotor (2).
  3. Device according to claims 1 and 2, characterised in that the expendable part is designed as a flexible doctor strip (11) which is stored in a store (10) and can be frictionally loaded by a displacement arrangement (12).
  4. Device according to claims 1 to 3, characterised in that the displacement arrangement (12) has a feed roller (14) which is attached to a driving element (13), preferably a pneumatic cylinder, as well as a spring-loaded pressure roller (15).
  5. Device according to one or more of the preceding claims, characterised in that the feed path of the doctor strip (11) frictionally introduced via the feed roller (14) is limited by the support of the tip (16) of the strip in the fibre collecting groove (4).
  6. Device according to one or more of the preceding claims, characterised in that a stroke limiter (17) which limits the return path of the doctor strip acts on the doctor strip (11).
  7. Device according to claims 5 and 6, characterised in that the feed path of the doctor strip (11) is longer than its return path influenced by the stroke limiter (17).
  8. Device according to one or more of the preceding claims, characterised in that a sensor arrangement (18) is provided which detects idling of the doctor strip store (10).
  9. Device according to claim 6, characterised in that the stroke limiter (17) is designed such that the doctor strip (11) can pass the stroke limiter (17) without obstruction in the feed direction (V) whereas the doctor strip is blocked in the return direction (R).
EP95103545A 1994-03-31 1995-03-11 Device for cleaning a rotor rotating in the rotor casing of a open-end spinning unit Expired - Lifetime EP0675217B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4411343A DE4411343A1 (en) 1994-03-31 1994-03-31 Device for cleaning a rotor rotating in the rotor housing of an open-end spinning unit
DE4411343 1994-03-31

Publications (2)

Publication Number Publication Date
EP0675217A1 EP0675217A1 (en) 1995-10-04
EP0675217B1 true EP0675217B1 (en) 1998-06-03

Family

ID=6514420

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95103545A Expired - Lifetime EP0675217B1 (en) 1994-03-31 1995-03-11 Device for cleaning a rotor rotating in the rotor casing of a open-end spinning unit

Country Status (3)

Country Link
US (1) US5609015A (en)
EP (1) EP0675217B1 (en)
DE (2) DE4411343A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10052672A1 (en) 2000-10-24 2002-05-02 Schlafhorst & Co W Rotary drive for a spinning rotor during its cleaning
DE10057230A1 (en) * 2000-11-18 2002-05-23 Schlafhorst & Co W Spinning rotor cleaning has arm and cleaning head applied by pneumatic cylinder at regulated pressure
DE102007062601A1 (en) 2007-12-22 2009-06-25 Oerlikon Textile Gmbh & Co. Kg Groove's degree of contamination determining method for spinning rotor of open-ended spinning device, involves stopping spinning device for cleaning groove, when actual length of thread section reaches or exceeds preset threshold value
DE102015101590A1 (en) * 2015-02-04 2016-08-04 Rieter Ingolstadt Gmbh Cleaning head and cleaning device for cleaning a spinning rotor and method for cleaning a spinning rotor
EP4015680A1 (en) * 2020-12-18 2022-06-22 Saurer Intelligent Technology AG Cleaning device for a yarn forming element of an air spinning nozzle and method for cleaning such a yarn forming element
CN112760764A (en) * 2021-01-19 2021-05-07 卓郎(江苏)纺织机械有限公司 Self-cleaning structure of rotor spinning device, textile machine and self-cleaning operation method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH594078A5 (en) * 1975-06-03 1977-12-30 Nuova San Giorgio Spa
DE2618094A1 (en) * 1976-04-24 1977-11-10 Schlafhorst & Co W Open:end spinner cleaning unit - has a scraper with air-fluid jet ranging into rotor to remove debris
DE2629161C2 (en) * 1976-06-29 1986-11-27 Stahlecker, Fritz, 7347 Bad Überkingen Maintenance device for an OE spinning machine with a large number of spinning units
CH629545A5 (en) * 1979-06-26 1982-04-30 Savio Spa PROCESS FOR CLEANING A ROTOR OF A SPINNING UNIT OF A MATERIAL OF THE RELEASED END TYPE AND DEVICE FOR CARRYING OUT SAID METHOD.
DE3313926A1 (en) * 1983-04-16 1984-10-18 Stahlecker, Fritz, 7347 Bad Überkingen OE ROTOR SPINNING MACHINE WITH A CLEANING DEVICE INSERTABLE IN THE OPEN SIDES OF THE SPINNING ROTORS
DE3715934C2 (en) * 1987-05-13 1996-07-18 Schlafhorst & Co W Scraper on a cleaning device of an open-end spinning machine
DE3911946A1 (en) * 1989-04-12 1990-10-18 Schlafhorst & Co W CLEANING DEVICE FOR A ROTOR OF AN OPEN-END SPINNING MACHINE

Also Published As

Publication number Publication date
EP0675217A1 (en) 1995-10-04
US5609015A (en) 1997-03-11
DE59502380D1 (en) 1998-07-09
DE4411343A1 (en) 1995-10-05

Similar Documents

Publication Publication Date Title
DE102006018838B4 (en) Paraffining device for a cheese-producing textile machine
DE2810620C2 (en) Machine for joining screw blanks and ring-shaped washers
DE69613052T2 (en) Device for separating a good consisting of heart and lungs
DE3718776C1 (en) Rotary synchronous cross cutter
EP0675217B1 (en) Device for cleaning a rotor rotating in the rotor casing of a open-end spinning unit
CH673471A5 (en)
DE102016101834B4 (en) Grinding device for chopping knives of a chopping machine and chopping machine
EP0215416A1 (en) Automatically operating mower head for a bush mower
EP0368057B1 (en) Can coiler
EP0665346A1 (en) Florentine blind with articulated arms
DE2059234A1 (en) Glue application device for labeling machines
DE10354588B4 (en) Paraffining device for a cheese-producing textile machine
DE2554716C2 (en) Open-end spinning unit with an opening roller
DE3702588C2 (en) Device on a card, cleaning machine or the like for cotton fibers with at least one separating knife assigned to a roller
DE19717735B4 (en) Open-end spinning device
DE2936581A1 (en) DEVICE FOR MONITORING THE FEED IN TEXTILE MACHINES
EP0658642B1 (en) Device for removing yarn underwindings from the spindles of a ring spinning or twisting machine
CH674526A5 (en)
CH628689A5 (en) FLORAL ACCEPTANCE UNIT AT THE COLLECTOR OF A CARD.
DE19755997B4 (en) Device for keeping a textile fiber transporting roller clean in a machine
DE19827610B4 (en) Dirt removal device for an open-end spinning machine
DE3733797C1 (en) Thread storage and delivery device for textile machines, in particular knitting machines
DE1172166B (en) Device for feeding fiber material to an opening cylinder
DE9111455U1 (en) Device for removing underwind residues from spindles
DE19829268C2 (en) Device for eliminating underwind thread turns on spindles of ring spinning or ring twisting machines

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE IT LI

17P Request for examination filed

Effective date: 19960404

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 19970916

ITF It: translation for a ep patent filed

Owner name: DE DOMINICIS & MAYER S.R.L.

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE IT LI

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59502380

Country of ref document: DE

Date of ref document: 19980709

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20000304

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010331

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20080319

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20080415

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090311