EP0263837B1 - Opening cylinder - Google Patents

Opening cylinder Download PDF

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Publication number
EP0263837B1
EP0263837B1 EP87901339A EP87901339A EP0263837B1 EP 0263837 B1 EP0263837 B1 EP 0263837B1 EP 87901339 A EP87901339 A EP 87901339A EP 87901339 A EP87901339 A EP 87901339A EP 0263837 B1 EP0263837 B1 EP 0263837B1
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EP
European Patent Office
Prior art keywords
comb
opening cylinder
teeth
opening
cylinder according
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EP87901339A
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German (de)
French (fr)
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EP0263837A1 (en
Inventor
Heinz Buess
José A. SAPORTA
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Individual
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Individual
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Priority to AT87901339T priority Critical patent/ATE69070T1/en
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-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
    • D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
    • D01H4/32—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls using opening rollers

Definitions

  • the present invention relates to an opening roller according to the preamble of claim 1.
  • Such an opening roller is described in GB-PS 2 556 090.
  • the comb strips of the opening combs which are predominantly circular in cross section, are rotatably supported about their longitudinal axis in corresponding grooves in the cylindrical roller part and are held in a certain pivot position by exchangeable, removable plates of a certain shape.
  • this older device it is sufficient with this older device to have different plates for different needle inclinations in stock.
  • this known opening roller is so complex to manufacture that it is less expensive to keep a suitable opening roller in stock for each fiber material. The advantage of this is that if defective needles occur, the roller does not have to be thrown away, but that the opening combs can be replaced individually without the roller having to be re-balanced.
  • opening rolls of this type are, for example, in DE-A 2 045 863, DE-A 2 159 230, DE-A 2 520 706, EP-A 178 614, CS-A 161 414, CS-A 161 415, JP-A 46 -24661, JP-A 51-53297, JP-A 57-74987 and JP-A 61-59676.
  • various means have been proposed to support the detachment of the fibers from the opening roller and the feeding to the spinning rotor.
  • CS-A 161 414 shows toothed ejector elements arranged between the opening combs.
  • the object of the present invention is to improve an opening roller of the type mentioned at the outset in such a way that an improvement in quality can be achieved while maintaining the advantage of a simple structure in the case of different yarns produced in the open spinning process.
  • the two- or three-part opening roller in FIG. 1 has a cylindrical part 1, the circumference of which is occupied by needles or teeth 2 in parallel rows. Fixed to this part 1 is an annular disc 3, in the inner circumference of which a bayonet groove 4 is cut. Furthermore, a stub shaft 5 belongs to the opening roller, which is rotatably mounted in a bearing (not shown) and on which a ring disk 6 and a sleeve 7 are arranged in a rotationally fixed manner.
  • the cuff 7 carries 8 bayonet cams at the free end, which can be connected to the bayonet groove 4.
  • Parallel slots or grooves 9 are provided in the cylindrical part 1.
  • a comb strip 10 carrying the needles or teeth 2 is shaped, force and / or firmly attached.
  • a comb strip 10 forms an opening comb 14 with the associated teeth 2.
  • the needles or teeth 2 are preferably pointed.
  • the comb strips 10 can consist of plastic or metal and can be held in the slots 9 with a friction fit or glue connection. You can also (Fig. 4 and 5) designed on the foot with a dovetail cross-section and held in a correspondingly shaped groove 9, the comb 10 together with the teeth 2 consists of one piece.
  • the comb strips 10 - when the ring disk 6 is removed - are pushed out of the slots or grooves 9 laterally and damaged needles or rows of teeth can be replaced in this way without the need to re-balance the opening roller.
  • the height of the teeth 2 is preferably the same. It is at least 1.5 millimeters, preferably 2 to 4 millimeters.
  • the comb strips 10 protrude uniformly over the circumference of the cylindrical part 1, it being possible for at least one opening 11 to be present in this protruding part.
  • the comb strips 10 protrude at least 1 millimeter (reference number 13) from the outer surface of the cylindrical part 1, the openings 11 being always oriented in the direction of rotation, regardless of the inclination of the teeth 2.
  • these openings 11 cause an air flow which reduces the friction between fiber and metal and consequently the formation of abrasion dust and the deposition of fiber abrasion on the roller.
  • the needles or teeth 2 are connected to the comb strip 10 in such a way that after installation in the opening roller they are either at right angles to the direction of rotation (radially oriented) or inclined in the direction of rotation.
  • the design of the needle or tooth trimmings on the drum can of course be selected according to the fiber material to be processed.
  • the comb strip 10 between the needles or teeth 2 may have a concave curve 12.
  • the fact that the upper edge of the comb strips 10 is raised above the outer surface of the cylindrical part 1 means that the contact area between the opening roller on the one hand and the fiber material on the other hand is very small (since the fiber material does not touch the outer surface of the cylindrical part 1) , which consequently reduces damage to the fibers accordingly.
  • an apex angle A of at least 10 ° is preferably selected.
  • the radial distance 13 of the teeth 2 or the upper edge of the comb strip 10 from the lateral surface of the cylindrical part 1 is at least 1 millimeter.
  • the openings 11 Although the advantageous effect of the openings 11 cannot be conclusively explained physically, it is assumed that they bring about a more favorable air stratification or a better air flow between the outer surface of the cylindrical part 1 on the one hand and the nonwoven fabric on the other hand.
  • the openings 11 presumably reduce the air turbulence behind the rows of teeth and thereby favor the tendency to align the fibers in parallel. It has been shown that the openings 11 bring about an improvement in themselves.
  • a 40 millimeter fiber touches the peripheral surface at a speed of 7,000 rpm, a roll radius of 30 millimeters and a fleece feed rate of 34 cm / min the opening roller over a length of approximately 110 meters.
  • the opening roller according to the invention the frictional contact between the outer surface of the cylindrical part 1 and the fibers is avoided and limited to the upper narrow sides of the comb strips, which reduces the contact length to approximately 35 meters. This reduction in the length of friction creates a significant improvement in the quality of the spun yarn.
  • the improved combing effect of the opening roller according to the invention also allows the speed to be reduced significantly without thereby impairing the opening of the nonwoven fabric. Which shortens the contact length to around 25 meters.
  • the opening roller described above significantly reduces the number of defects per 100,000 meters of spun yarn in an open-end spinning machine compared to known opening rollers.
  • Fig. 8 shows the speed of the opening roller on the abscissa and the number of defects in the spun yarn on the ordinate.
  • the upper curve shows the number of errors of a known opening roller as a function of its speed, whereas the lower curve shows the number of errors of an opening roller according to the invention. This comparison shows that the number of errors is reduced considerably, especially at lower opening roller operating speeds.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Massaging Devices (AREA)
  • Feeding And Guiding Record Carriers (AREA)

Abstract

PCT No. PCT/CH87/00037 Sec. 371 Date Dec. 9, 1987 Sec. 102(e) Date Dec. 9, 1987 PCT Filed Mar. 27, 1987 PCT Pub. No. WO87/06276 PCT Pub. Date Oct. 22, 1987.A device for treating fibers includes a cylindrical support having an axis of rotation. The support has a circular outer peripheral surface and carries a set of combs which extend parallel to the rotational axis of the support. The combs are mounted on the support in such a way that the spine of each comb is held by the support with the teeth located radially outward of the peripheral surface of the support. The spines of the combs all project radially outward of such peripheral surface by the same distance.

Description

Die vorliegende Erfindung bezieht sich auf eine Öffnerwalze gemäss dem Oberbegriff des Anspruches 1.The present invention relates to an opening roller according to the preamble of claim 1.

Eine derartige Öffnerwalze ist in der GB-PS 2 556 090 beschrieben. Die im Querschnitt vorwiegend kreisförmigen Kammleisten der Öffnerkämme sind um ihre Längsachse drehbar in entsprechenden Nuten im zylindrischen Walzenteil gelagert und durch auswechselbare, abnehmbare Platten bestimmter Form in einer bestimmten Schwenklage gehalten. Statt mehrere Öffnerwalzen mit verschiedener Nadelneigung für verschiedene Fasermaterialien an Lager zu halten genügt es mit dieser älteren Vorrichtung verschiedene Platten für verschiedene Nadelneigungen an Lager zu haben. Diese bekannte Öffnerwalze ist indessen in der Herstellung so aufwendig, dass es kostengünstiger ist für jedes Fasermaterial eine geeignete Öffnerwalze am Lager zu halten. Ihr Vorteil liegt darin, dass beim Auftreten defekter Nadeln nicht die Walze weggeworfen werden muss, sondern dass die Öffnerkämme einzeln ausgewechselt werden können, ohne dass ein erneutes Auswuchten der Walze erforderlich ist.Such an opening roller is described in GB-PS 2 556 090. The comb strips of the opening combs, which are predominantly circular in cross section, are rotatably supported about their longitudinal axis in corresponding grooves in the cylindrical roller part and are held in a certain pivot position by exchangeable, removable plates of a certain shape. Instead of having several opening rollers with different needle inclinations for different fiber materials in stock, it is sufficient with this older device to have different plates for different needle inclinations in stock. However, this known opening roller is so complex to manufacture that it is less expensive to keep a suitable opening roller in stock for each fiber material. The advantage of this is that if defective needles occur, the roller does not have to be thrown away, but that the opening combs can be replaced individually without the roller having to be re-balanced.

Andere Öffnerwalzen dieser Art sind beispielsweise in DE-A 2 045 863, DE-A 2 159 230, DE-A 2 520 706, EP-A 178 614, CS-A 161 414, CS-A 161 415, JP-A 46-24661, JP-A 51-53297, JP-A 57-74987 und JP-A 61-59676 beschrieben. Zum Verbessern des Öffnens der Fasern und somit zum Reduzieren der Fehleranzahl im anschliessend gesponnenen Garn wurden verschiedene Mittel vorgeschlagen, das Ablösen der Fasern von der Öffnerwalze und das Zuführen zum Spinnrotor zu unterstützen. Hierzu zeigt beispielsweise die CS-A 161 414 zwischen den Öffnerkämmen angeordnete, gezahnte Auswerferelemente. Durch diese Massnahme soll auch die Reibung zwischen den Fasern und den Kammleisten reduziert werden, wozu bei den gezahnten Auswerferelementen in radialer Richtung deren Leisten weiter über die Mantelfläche des zylindrischen Teils der Walze vorstehen als die Kammleisten bei den Öffnerkämmen. Bei der Öffnerwalze gemäss der CS-A 161 415 weisen die sich folgenden Öffnerkämme eine zunehmende radiale Erstreckung über der Mantelfläche des zylindrischen Teils auf, wodurch die Fasern zwangsweise nach aussen bewegt und dadurch leichter von der Öffnerwalze getrennt werden. Ebenso sind radiale Löcher in der Mantelfläche des zylindrischen Teils bekannt (z.B. FR-A 1 295 871), um mit einem radialen Luftstrom die Fasern von der Öffnerwalze zu trennen.Other opening rolls of this type are, for example, in DE-A 2 045 863, DE-A 2 159 230, DE-A 2 520 706, EP-A 178 614, CS-A 161 414, CS-A 161 415, JP-A 46 -24661, JP-A 51-53297, JP-A 57-74987 and JP-A 61-59676. In order to improve the opening of the fibers and thus to reduce the number of defects in the subsequently spun yarn, various means have been proposed to support the detachment of the fibers from the opening roller and the feeding to the spinning rotor. To this end, for example, CS-A 161 414 shows toothed ejector elements arranged between the opening combs. Through this Measure should also reduce the friction between the fibers and the comb strips, for which purpose the strips in the toothed ejector elements protrude further in the radial direction over the lateral surface of the cylindrical part of the roller than the comb strips in the opener combs. In the opening roller according to CS-A 161 415, the following opening combs have an increasing radial extension over the lateral surface of the cylindrical part, as a result of which the fibers are forced outwards and are therefore more easily separated from the opening roller. Radial holes are also known in the lateral surface of the cylindrical part (for example FR-A 1 295 871) in order to separate the fibers from the opening roller with a radial air flow.

Alle im vorgenannten Stand der Technik enthaltenen Vorschläge brachten jedoch nur geringe Verbesserungen beim im Offenend-Spinnverfahren hergestellten Garn.However, all the suggestions contained in the aforementioned prior art brought only minor improvements to the yarn produced in the open-end spinning process.

Die vorliegende Erfindung stellt sich die Aufgabe, eine Öffnerwalze der eingangs erwähnten Art derart zu verbessern, dass damit unter Wahrung des Vorteils eines einfachen Aufbaus, bei unterschiedlichen im offenen Spinnverfahren hergestellten Garnen eine Qualitätsverbesserung erreichbar ist.The object of the present invention is to improve an opening roller of the type mentioned at the outset in such a way that an improvement in quality can be achieved while maintaining the advantage of a simple structure in the case of different yarns produced in the open spinning process.

Erfindungsgemäss wird die Aufgabe gelöst durch die kennzeichnenden Merkmale des Anspruchs 1.According to the invention, the object is achieved by the characterizing features of claim 1.

Anhand der beiliegenden schematischen Zeichnung wird die Erfindung beispielsweise erläutert. Es zeigen:

  • Fig. 1 eine Öffnerwalze in perspektivischer Explosionsdarstellung,
  • Fig. 2 ein Ausschnitt aus einer Ansicht in Richtung des Pfeiles II in Fig. 1,
  • Fig. 3 einen Ausschnitt aus einem Öffnerkamm in Richtung des Pfeiles III in Fig. 2 in vergrösserter Darstellung,
  • Fig. 4 eine gleiche Ansicht wie Fig. 2 eines zweiten Ausführungsbeispiels des Öffnerkammes,
  • Fig. 5 eine Ansicht eines Öffnerkammes gemäss Fig. 4 in Richtung des Pfeiles V,
  • Fig. 6 einen Ausschnitt aus einem dritten Ausführungsbeispiel eines Öffnerkammes in Ansicht gemäss Pfeil III in Fig. 2,
  • Fig. 7 einen Ausschnitt aus einem vierten Ausführungsbeispiel eines Öffnerkammes in Ansicht gemäss Pfeil III in Fig. 2, und
  • Fig. 8 eine graphische Darstellung der Fehler im Garn in Abhängigkeit von der Drehzahl der Öffnerwalze.
The invention is explained, for example, with the aid of the attached schematic drawing. Show it:
  • 1 is an opening roller in a perspective exploded view,
  • 2 shows a detail from a view in the direction of arrow II in FIG. 1,
  • 3 shows a detail of an opener comb in the direction of arrow III in FIG. 2 in an enlarged view,
  • 4 shows the same view as FIG. 2 of a second embodiment of the opening comb,
  • 5 is a view of an opening comb according to FIG. 4 in the direction of arrow V,
  • 6 shows a detail from a third exemplary embodiment of an opener comb in a view according to arrow III in FIG. 2,
  • Fig. 7 shows a section of a fourth embodiment of an opener comb in a view according to arrow III in Fig. 2, and
  • Fig. 8 is a graphical representation of the errors in the yarn as a function of the speed of the opening roller.

Die zwei- oder dreiteilige Öffnerwalze in Fig. 1 weist einen zylindrischen Teil 1 auf, dessen Umfang in parallelen Reihen mit Nadeln oder Zähnen 2 besetzt ist. Fest mit diesem Teil 1 verbunden ist eine Ringscheibe 3, in deren inneren Umfang eine Bajonettnut 4 geschnitten ist. Weiter gehört zur Öffnerwalze eine Stummelwelle 5, die in einem nicht dargestellten Lager drehbar gelagert ist und auf der drehfest eine Ringscheibe 6 sowie eine Manschette 7 angeordnet sind. Die Manschette 7 trägt am freien Ende 8 Bajonettnocken, die mit der Bajonettnut 4 verbindbar ist. Beim Zusammensetzen der Öffnerwalze wird die Manschette 7 in die Ringscheibe 3 eingeschoben und gedreht bis die Ringscheibe 6 fest gegen die Seite des zylindrischen Teils 1 gehalten ist.The two- or three-part opening roller in FIG. 1 has a cylindrical part 1, the circumference of which is occupied by needles or teeth 2 in parallel rows. Fixed to this part 1 is an annular disc 3, in the inner circumference of which a bayonet groove 4 is cut. Furthermore, a stub shaft 5 belongs to the opening roller, which is rotatably mounted in a bearing (not shown) and on which a ring disk 6 and a sleeve 7 are arranged in a rotationally fixed manner. The cuff 7 carries 8 bayonet cams at the free end, which can be connected to the bayonet groove 4. When assembling the opening roller, the sleeve 7 is inserted into the ring disk 3 and rotated until the ring disk 6 is held firmly against the side of the cylindrical part 1.

Im zylindrischen Teil 1 sind parallele Schlitze oder Nuten 9 vorgesehen. In diese ist je eine die Nadeln oder Zähne 2 tragende Kammleiste 10 form-, kraft- und/ oder materialschlüssig befestigt. Eine Kammleiste 10 bildet mit den zugeordneten Zähnen 2 einen Öffnerkamm 14. Die Nadeln oder Zähne 2 sind vorzugsweise spitz. Die Kammleisten 10 können aus Kunststoff oder Metall bestehen und mit Reibungssitz oder Leimverbindung in den Schlitzen 9 gehalten sein. Sie können aber auch (Fig. 4 und 5) am Fuss mit schwalbenschwanz-förmigem Querschnitt gestaltet und in entsprechend geformter Nut 9 gehalten sein, wobei die Kammleiste 10 zusammen mit den Zähnen 2 aus einem Stück besteht. Bei dieser Ausbildung können die Kammleisten 10 - wenn die Ringscheibe 6 entfernt ist - seitlich aus den Schlitzen oder Nuten 9 herausgeschoben und beschädigte Nadeln oder Zahnreihen auf diese Weise ersetzt werden, ohne dass ein erneutes Auswuchten der Öffnerwalze dadurch notwendig wird. Die Höhe der Zähne 2 ist vorzugsweise gleich. Sie beträgt mindestens 1,5 Millimeter, vorzugsweise 2 bis 4 Millimeter.Parallel slots or grooves 9 are provided in the cylindrical part 1. In each of these a comb strip 10 carrying the needles or teeth 2 is shaped, force and / or firmly attached. A comb strip 10 forms an opening comb 14 with the associated teeth 2. The needles or teeth 2 are preferably pointed. The comb strips 10 can consist of plastic or metal and can be held in the slots 9 with a friction fit or glue connection. You can also (Fig. 4 and 5) designed on the foot with a dovetail cross-section and held in a correspondingly shaped groove 9, the comb 10 together with the teeth 2 consists of one piece. In this embodiment, the comb strips 10 - when the ring disk 6 is removed - are pushed out of the slots or grooves 9 laterally and damaged needles or rows of teeth can be replaced in this way without the need to re-balance the opening roller. The height of the teeth 2 is preferably the same. It is at least 1.5 millimeters, preferably 2 to 4 millimeters.

Wie die Zeichnung zeigt stehen die Kammleisten 10 gleichmässig über den Umfang des zylindrischen Teils 1 vor, wobei in diesem vorstehenden Teil mindestens eine Durchbrechung 11 vorhanden sein kann. Die Kammleisten 10 überragen um mindestens 1 Millimeter (Hinweisziffer 13) die Mantelfläche des zylindrischen Teils 1, wobei die Durchbrechungen 11 unabhängig von der Neigung der Zähne 2 immer in Drehrichtung orientiert sind. Diese Durchbrechungen 11 bewirken beim Öffnen eines Faserstranges eine Luftströmung, welche die Reibung Faser - Metall und demzufolge die Bildung von Abriebstaub und ein Niederschlagen von Faserabrieb auf der Walze verringert.As the drawing shows, the comb strips 10 protrude uniformly over the circumference of the cylindrical part 1, it being possible for at least one opening 11 to be present in this protruding part. The comb strips 10 protrude at least 1 millimeter (reference number 13) from the outer surface of the cylindrical part 1, the openings 11 being always oriented in the direction of rotation, regardless of the inclination of the teeth 2. When a fiber strand is opened, these openings 11 cause an air flow which reduces the friction between fiber and metal and consequently the formation of abrasion dust and the deposition of fiber abrasion on the roller.

Die Nadeln oder Zähne 2 sind mit der Kammleiste 10 derart verbunden, dass sie nach dem Einbau in der Öffnerwalze entweder rechtwinklig zur Drehrichtung (radial orientiert) oder in Drehrichtung geneigt sind. Die Gestaltung des Nadel- oder Zahnbesatzes auf der Trommel kann selbstverständlich entsprechend des zu verarbeitenden Fasermaterials gewählt werden.The needles or teeth 2 are connected to the comb strip 10 in such a way that after installation in the opening roller they are either at right angles to the direction of rotation (radially oriented) or inclined in the direction of rotation. The design of the needle or tooth trimmings on the drum can of course be selected according to the fiber material to be processed.

Wie in Fig. 5 mit gestrichelter Linie angedeutet und in den Fig. 3, 6 und 7 mit ausgezogenen Strichen gezeigt ist, kann die Kammleiste 10 zwischen den Nadeln oder Zähnen 2 eine konkave Rundung 12 aufweisen. Die Tatsache, dass der obere Rand der Kammleisten 10 über die Mantelfläche des zylindrischen Teils 1 erhaben ist, bewirkt, dass dadurch die Berührungsfläche zwischen der Öffnerwalze einerseits und dem Fasermaterial anderseits sehr klein ist (da das Fasermaterial die Mantelfläche des zylindrischen Teils 1 nicht berührt), was in der Folge eine Schädigung der Fasern entsprechend verringert.As indicated in Fig. 5 with a dashed line and shown in Figs. 3, 6 and 7 with solid lines, the comb strip 10 between the needles or teeth 2 may have a concave curve 12. The fact that the upper edge of the comb strips 10 is raised above the outer surface of the cylindrical part 1 means that the contact area between the opening roller on the one hand and the fiber material on the other hand is very small (since the fiber material does not touch the outer surface of the cylindrical part 1) , which consequently reduces damage to the fibers accordingly.

Bei Zähnen 2 entsprechend Fig. 6 wird vorzugsweise ein Scheitelwinkel A von mindestens 10° gewählt. Der radiale Abstand 13 der Zähne 2 bzw. des oberen Randes der Kammleiste 10 von der Mantelfläche des zylindrischen Teils 1 beträgt mindestens 1 Millimeter.For teeth 2 according to FIG. 6, an apex angle A of at least 10 ° is preferably selected. The radial distance 13 of the teeth 2 or the upper edge of the comb strip 10 from the lateral surface of the cylindrical part 1 is at least 1 millimeter.

Obwohl die vorteilhafte Wirkung der Durchbrechungen 11 physikalisch nicht abschliessend erklärbar ist, wird angenommen, dass sie eine günstigere Luftschichtung oder eine bessere Luftströmung zwischen der Mantelfläche des zylindrischen Teil 1 einerseits und dem Faservlies anderseits bewirken. Vermutlich verringern die Durchbrechungen 11 die Luftturbulenz hinter den Zahnreihen und begünstigen dadurch die Neigung die Fasern parallel auszurichten. Es hat sich gezeigt, dass die Durchbrechungen 11 für sich allein eine Verbesserung bringen.Although the advantageous effect of the openings 11 cannot be conclusively explained physically, it is assumed that they bring about a more favorable air stratification or a better air flow between the outer surface of the cylindrical part 1 on the one hand and the nonwoven fabric on the other hand. The openings 11 presumably reduce the air turbulence behind the rows of teeth and thereby favor the tendency to align the fibers in parallel. It has been shown that the openings 11 bring about an improvement in themselves.

Eine 40 Millimeter Faser berührt bei den bekannten Öffnerwalzen bei einer Drehzahl von 7'000 UpM, einem Walzenradius von 30 Millimeter und einer Vlies-Zuführgeschwindigkeit von 34 cm/min die die periphere Oberfläche der Öffnerwalze auf einer Länge von ungefähr 110 Metern. Mit der erfindungsgemässen Öffnerwalze wird der Reibkontakt zwischen der Mantelfläche des zylindrischen Teils 1 und den Fasern vermieden und auf die obere Schmalseiten der Kammleisten beschränkt, was die Berührungslänge auf ungefähr 35 Meter reduziert. Diese Verkleinerung der Reibungslänge erzeugt eine wesentliche Qualitätsverbesserung hinsichtlich des gesponnenen Garns. Die verbesserte Kämmwirkung der erfindungsgemässen Öffnerwalze erlaubt es zudem, die Drehzahl wesentlich zu senken ohne dadurch das Öffnen des Faservlieses zu beeinträchtigen. Was die Berührungslänge auf zirka 25 Meter verkürzt.In the known opener rolls, a 40 millimeter fiber touches the peripheral surface at a speed of 7,000 rpm, a roll radius of 30 millimeters and a fleece feed rate of 34 cm / min the opening roller over a length of approximately 110 meters. With the opening roller according to the invention, the frictional contact between the outer surface of the cylindrical part 1 and the fibers is avoided and limited to the upper narrow sides of the comb strips, which reduces the contact length to approximately 35 meters. This reduction in the length of friction creates a significant improvement in the quality of the spun yarn. The improved combing effect of the opening roller according to the invention also allows the speed to be reduced significantly without thereby impairing the opening of the nonwoven fabric. Which shortens the contact length to around 25 meters.

Durch die vorangehend beschriebene Öffnerwalze wird die Fehlerzahl per 100'000 Meter gesponnenen Garns in einer Offenend-Spinnmaschine im Vergleich mit bekannten Öffnerwalzen wesentlich reduziert. Fig. 8 zeigt auf der Abszisse die Drehzahl der Öffnerwalze und auf der Ordinate die Fehlerzahl im gesponnenen Garn. Die obere Kurve zeigt die Fehlerzahl einer bekannten Öffnerwalze in Abhängigkeit ihrer Drehzahl, wogegen die untere Kurve die Fehlerzahl einer erfindungsgemässen Öffnerwalze zeigt. Diese Gegenüberstellung veranschaulicht, dass die Fehlerzahl insbesondere bei kleineren Arbeitsgeschwindigkeiten der Öffnerwalze ganz wesentlich reduziert wird.The opening roller described above significantly reduces the number of defects per 100,000 meters of spun yarn in an open-end spinning machine compared to known opening rollers. Fig. 8 shows the speed of the opening roller on the abscissa and the number of defects in the spun yarn on the ordinate. The upper curve shows the number of errors of a known opening roller as a function of its speed, whereas the lower curve shows the number of errors of an opening roller according to the invention. This comparison shows that the number of errors is reduced considerably, especially at lower opening roller operating speeds.

Claims (10)

1. Opening cylinder with a cylindrical part (1), the outer surface of which is equipped with teeth (2) arranged in parallel rows, each of these rows being connected fixedly to a comb strip (10) and being mounted together with the comb strip (10) in a corresponding groove (9) open towards the outer surface, characterised in that the opening cylinder has solely opening combs (14) with a comb strip (10) and with at least one row of teeth (2), and in that the comb strips (10) project uniformly above the outer surface of the cylindrical part (1).
2. Opening cylinder according to Claim 1, characterised in that the comb strips (10) and the associated teeth (2) are in one piece.
3. Opening cylinder according to Claim 1, characterised in that the projecting part of at least one comb strip (10) has at least one perforation (11) oriented in the direction of rotation.
4. Opening cylinder according to Claim 1, characterised in that the teeth (2) are pointed.
5. Opening cylinder according to one of Claims 1 to 4, characterised in that the comb strips (10) are concavely rounded (12) between the teeth (2).
6. Opening cylinder according to Claim 1, characterised in that the comb strips (10) are subdivided into a plurality of portions connected to one another and having at least one tooth (2), and in that this portion with the associated tooth (2) is produced in one piece.
7. Opening cylinder according to Claim 6, characterised in that the portions of a comb strip (10) are adhesively bonded to one another.
8. Opening cylinder according to Claim 1, characterised in that the teeth (2) are flat needles.
9. Opening cylinder according to Claim 1, characterised in that the comb strips (10) project at least one millimetre above the outer surface of the cylindrical part (1).
10. Opening cylinder according to Claim 1, characterised in that the length of the teeth is 1.5 to 4 millimetres.
EP87901339A 1986-04-10 1987-03-27 Opening cylinder Expired - Lifetime EP0263837B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87901339T ATE69070T1 (en) 1986-04-10 1987-03-27 OPENER ROLLER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1424/86A CH669215A5 (en) 1986-04-10 1986-04-10 OPENER ROLLER.
CH1424/86 1986-04-10

Publications (2)

Publication Number Publication Date
EP0263837A1 EP0263837A1 (en) 1988-04-20
EP0263837B1 true EP0263837B1 (en) 1991-10-30

Family

ID=4210133

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87901339A Expired - Lifetime EP0263837B1 (en) 1986-04-10 1987-03-27 Opening cylinder

Country Status (7)

Country Link
US (1) US4868952A (en)
EP (1) EP0263837B1 (en)
JP (1) JPS63502998A (en)
AT (1) ATE69070T1 (en)
CH (1) CH669215A5 (en)
DE (1) DE3774241D1 (en)
WO (1) WO1987006277A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5258802A (en) * 1989-04-30 1993-11-02 Minolta Camera Kabushiki Kaisha Camera system which compensates for defocusing during operation
DE10054697A1 (en) * 2000-11-04 2002-05-08 Schlafhorst & Co W Opening roller for an open-end spinning device
DE102012100526A1 (en) 2012-01-23 2013-07-25 Rieter Ingolstadt Gmbh Clothing carrier and opening roller with quick release
CN102704051B (en) * 2012-05-22 2015-01-21 山东济宁如意毛纺织股份有限公司 Needle loop maintenance replacement device for gilling machine
CN104818551B (en) * 2015-04-09 2017-03-15 苏州科明纺织有限公司 A kind of combing roller

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2115605A (en) * 1934-06-02 1938-04-26 Proctor & Schwartz Inc Carding machine
US2832098A (en) * 1954-11-15 1958-04-29 Mee William Henry Garnett wire
NL130261C (en) * 1960-07-28
CH505919A (en) * 1969-01-31 1971-04-15 Chr Burckhardt Fa Needle roller
DE2045863A1 (en) * 1969-09-25 1971-04-08 Vyzkumny Ustav Bavlnarsky, Usti Nad Orlici (Tschechoslowakei) Open-end spinning carding roller
CS161233B1 (en) * 1970-12-23 1975-06-10
DE2520706A1 (en) * 1975-05-09 1976-11-25 Feldmuehle Anlagen Prod Polyester fibre carding drum for open-end spinning cups - with wear resistant sintered ceramic combs
FR2374441A1 (en) * 1976-12-16 1978-07-13 Alsacienne Constr Meca ROTATING DRUM FILLED WITH TIPS OR TEETH FOR TREATMENT OF TEXTILE FIBER RIBBONS
JPS5774987A (en) * 1980-10-27 1982-05-11 Matsushita Seiko Kk Far infrared ray heater
DE3170900D1 (en) * 1981-02-20 1985-07-11 Rieter Ag Maschf Removing cylinder for bales of fibres
DE3336327A1 (en) * 1983-10-06 1985-04-18 Drei-S-Werk Präzisionswerkzeuge GmbH & Co Fertigungs-KG, 8540 Schwabach NEEDLE ROLLER FOR TEXTILE MACHINES
DE3438133A1 (en) * 1984-10-18 1986-04-30 Staedtler & Uhl, 8540 Schwabach OPEN-END SPINNING MACHINE
US4627131A (en) * 1985-07-11 1986-12-09 Kanai Juyo Kogyo Co., Ltd. Combing roller for an open-end spinning machine
JPH05153297A (en) * 1991-11-30 1993-06-18 Nec Corp Facsimile equipment
JPH06159676A (en) * 1992-11-26 1994-06-07 Mitsui Eng & Shipbuild Co Ltd Combustible gas sensor in boiler furnace

Also Published As

Publication number Publication date
ATE69070T1 (en) 1991-11-15
JPS63502998A (en) 1988-11-02
US4868952A (en) 1989-09-26
DE3774241D1 (en) 1991-12-05
WO1987006277A1 (en) 1987-10-22
CH669215A5 (en) 1989-02-28
EP0263837A1 (en) 1988-04-20

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