EP0058781A1 - Removing cylinder for bales of fibres - Google Patents

Removing cylinder for bales of fibres Download PDF

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Publication number
EP0058781A1
EP0058781A1 EP81110768A EP81110768A EP0058781A1 EP 0058781 A1 EP0058781 A1 EP 0058781A1 EP 81110768 A EP81110768 A EP 81110768A EP 81110768 A EP81110768 A EP 81110768A EP 0058781 A1 EP0058781 A1 EP 0058781A1
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EP
European Patent Office
Prior art keywords
disks
shaft
shells
shell
disc
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP81110768A
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German (de)
French (fr)
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EP0058781B1 (en
Inventor
Rolf Binder
David Egloff
Daniel Hanselmann
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Priority to AT81110768T priority Critical patent/ATE13699T1/en
Publication of EP0058781A1 publication Critical patent/EP0058781A1/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
    • D01G7/00—Breaking or opening fibre bales
    • D01G7/04—Breaking or opening fibre bales by means of toothed members
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/84—Card clothing; Manufacture thereof not otherwise provided for
    • D01G15/92—Attaching card clothing to carding elements

Definitions

  • the present invention relates to a removal roller for the mechanical opening and removal of fiber bales by loosening fiber flakes from the same by means of a rotatable shaft attached to it, circular toothed disks attached to it, which are provided with teeth over their outer circumference.
  • a bale grater has become known from the Swiss patent specification No. 376.403, according to which rotating sawtooth disks which advance between rust bars against fiber bales passed on them, tumbling, i.e. at an angle other than 90 degrees with respect to their axis of rotation.
  • the washers are located on a shaft and are pressed in between spacers by means of tension bolts.
  • each of the toothed disks comprises two half disks, which essentially have the shape of a half circular ring, that an approximately semicircular shell is provided for each half disk, that each half disk is cast into one shell each, and that the shells are self-contained to form a toothed disk, half-disks enclose the shaft in a ring shape, releasably attached to one another and firmly connected to the shaft by a press fit.
  • the roller according to the invention has the additional advantage that such vibrations can be easily eliminated or greatly reduced.
  • pouring the half disks into the shells also allows the selection of the most suitable material for each of these parts within wide limits. It is e.g. it is possible to keep the weight of the shells small by making them from a light material, and to manufacture the teeth and / or toothed washer from a material of great hardness in order to obtain a long life for them.
  • the removal roller 11 shown in FIG. 1 has a shaft 12, also shown in FIG. 2.
  • the latter is rotatably supported at its two ends in bearings 13, which in turn are mounted on carriers 14.
  • the shaft 12 is also driven by means not shown for rotation.
  • Each disc comprises two half discs 15 and 16 lying in one plane.
  • the half disc 15 is cast into a shell 17 and the half disc 16 is cast into a shell 18.
  • the two shells 17, 18 enclose the shaft 12 in a ring shape, but, like the half disks 15, 16, are separated from one another by slots 21.
  • the shells 17, 18 are detachably fastened to one another by screws 22, pressed firmly onto the shaft 12 and in this way firmly connected to the shaft 12 by a press fit.
  • Each of the shells 17, 18 comprises a jacket 27 (FIG. 2) which, apart from the minimal deviation caused by the slot 21, has the shape of a semicylinder and on the inside of which ribs 23 are attached.
  • the jacket 27 is provided with indentations 28.
  • the disks, each consisting of a half disk 15, 16, are arranged perpendicular to the shaft 12. You can, however, if desired, also by an angle. be inclined against the shaft 12, as shown by the disks 15a and 16a shown in broken lines. A large number of such pairs of half-disks 15, 16 and shells 17, 18 are present along the shaft 12. In the example shown, the shells 17, 18 abut one another.
  • FIG. 3 a single half disk 16 is shown for further illustration.
  • the half disks 15, 16 have essentially the shape of a half circular ring. They are provided with teeth 24 on their outer circumference. Each of the half disks 15, 16 is, apart from the removal caused by the slots 21, over a half circular ring which extends outward from its inner circumference to the imaginary half circle 25 (FIG.
  • the shaft 12 and thus also the disks comprising two half disks 15, 16 are set in rotation.
  • These flakes are continuously sucked off and conveyed for further processing.
  • the fiber bale can e.g. are constantly pushed back and forth along the grate bars 26, the rotation of the shaft 12 taking place in one or in the opposite direction of rotation, depending on the direction of displacement. If the disks are in an inclined position, as shown by the half disks 15a and 16a, then they wobble. Therefore, practically the entire area between two adjacent grate bars 26 is covered by each pane.
  • Hard teeth can be obtained, for example, by using steel half disks 15, 16, which are hardened at the location of the teeth 24.
  • an area of the half-disks 15, 16 adjacent to the latter which extends for example from the teeth to the imaginary semi-circle 25 (FIG. 3), or the entire half-disk, can be hardened.
  • the shells 17, 18, as is the case in the example shown are designed as non-solid elements. To reduce weight, they are made from aluminum in an advantageous embodiment.
  • the material from which the disks and shells are made can be selected largely independently of one another.
  • the disks can be made from steel and the shells from aluminum.
  • the half-disks 15, 16 are advantageously poured into the shells 17 and 18, respectively, by pressure or injection molding. If a particularly firm connection of the half disks to the shells is desired, then configurations designed for this purpose, such as bores or small elevations, are provided on the half disks. Such bores 29 are shown in FIG. 3, for example.
  • the shells 17, 18 are adapted to the spacing of adjacent grate bars 26, i.e. that their extension in the longitudinal direction of the shaft 12 is equal to the division of adjacent bars 26. Through the abutment of the shells against one another, an additional strength of the roller is obtained, so that a possible provision of spacers between mated shell pairs 17, 18 is not necessary.
  • the pairs of shells 17, 18 can, however, also have mutual distances from one another in the longitudinal direction of the shaft 12 (not shown).
  • FIG. 2 In the uppermost part of FIG. 2, a staggered arrangement of disks is shown with broken lines, in which the teeth of adjacent disks are staggered radially with respect to one another, which in this case is equal to a quarter of the distance between adjacent teeth 24 of a disk.

Abstract

Die vorliegende Erfindung betrifft eine Abtragwalze (11) zum Öffnen von Faserballen durch Loslösen von Faserflocken aus denselben mittels längs einer rotierbaren Welle (12) an dieser befestigter Zahnscheiben. Gemäß der Erfindung umfasst jede Zahnscheibe zwei Halbscheiben (15, 16), welche im wesentlichen die Form eines halben Kreisringes haben; ist für jede Halbscheibe eine ungefähr halbkreisringförmige Schale (17, 18) vorgesehen; ist jede Scheibe in je eine Schale eingegossen, und umschließen die Schalen von sich zu einer Scheibe zusammensetzenden Halbscheiben die Welle ringförmig, wobei sie lösbar aneinander befestigt und durch einen Preßsitz mit der Welle fest verbunden sind. Die erfindungsgemäße Abtragwalze gestattet, beim Vorliegen eines defekten Zahnes (24) die Halbscheibe mit dem defekten Zahn und die dazugehörige Schale einzeln zu ersetzen, ohne die Welle, ihre Befestigungselemente und die auf der Welle befestigten restlichen Scheiben, usw., abmontieren, zerlegen und nach dem Ersetzen der Scheibe mit dem beschädigten Zahn wieder einbauen zu müssen. Man erzielt somit beim Ersetzen der Zähne eine große Ersparnis an Arbeit und eine Verkürzung der dadurch bedingten Betriebsunterbrüche. Weitere Vorteile der erfindungsgemaßen Abtragwalze bestehen in einer beliebigen Einstellmöglichkeit der Staffelung der Zähne der Scheiben gegeneinander. Damit laßt sich das Auftreten unerwünschter Vibrationen der Walze vermeiden. Schließlich ermöglicht das Eingießen der Halbscheiben in die Schalen, innerhalb weiter Grenzen für jeden dieser Teile das geeignetste Material zu wählen. Beispielsweise können die Schalen aus einem leichten und die Scheiben aus einem sehr harten Material hergestellt sein.The present invention relates to a removal roller (11) for opening fiber bales by detaching fiber flakes therefrom by means of toothed disks attached to the latter along a rotatable shaft (12). According to the invention, each toothed disc comprises two half-discs (15, 16) which are essentially in the form of a half circular ring; an approximately semicircular shell (17, 18) is provided for each half disk; each disc is cast into a shell, and the shells surround the shaft in a ring-shaped manner from half-discs which form a disc, wherein they are detachably fastened to one another and firmly connected to the shaft by a press fit. The abrasion roller according to the invention allows the half disk with the defective tooth and the associated shell to be replaced individually when a defective tooth (24) is present, without dismantling, disassembling and re-assembling the shaft, its fastening elements and the remaining disks, etc. fastened on the shaft to replace the disc with the damaged tooth. A large amount of work is saved when the teeth are replaced and the resulting interruptions in operation are shortened. Further advantages of the removal roller according to the invention consist in any setting option for the staggering of the teeth of the disks against one another. The occurrence of undesirable vibrations of the roller can thus be avoided. Finally, the pouring of the half disks into the shells enables the most suitable material to be selected for each of these parts within wide limits. For example, the shells can be made from a light material and the disks from a very hard material.

Description

Die vorliegende Erfindung bezieht sich auf eine Abtragwalze zum mechanischen Oeffnen und Abtragen von Faserballen durch Losloesen von Faserflocken aus denselben mittels laengs einer rotierbaren Welle an dieser befestigter, kreisringfoermiger Zahnscheiben, welche ueber ihrem aeusseren Umfang mit Zaehnen versehen sind.The present invention relates to a removal roller for the mechanical opening and removal of fiber bales by loosening fiber flakes from the same by means of a rotatable shaft attached to it, circular toothed disks attached to it, which are provided with teeth over their outer circumference.

Durch die schweizerische Patentschrift Nr. 376.403 ist eine Ballenraspel bekanntgeworden, gemaess welcher rotierende Saegezahnscheiben, die zwischen Roststaeben gegen auf diesen vorbeigefuehrte Faserballen vorstossen, taumelnd, d.h. unter einem von 90 Grad verschiedenen Winkel in bezug auf ihre Rotationsachse, angeordnet sind. Die Scheiben befinden sich auf einer Welle und sind durch Zugbolzen zwischen Distanzstuecken eingepresst.A bale grater has become known from the Swiss patent specification No. 376.403, according to which rotating sawtooth disks which advance between rust bars against fiber bales passed on them, tumbling, i.e. at an angle other than 90 degrees with respect to their axis of rotation. The washers are located on a shaft and are pressed in between spacers by means of tension bolts.

Es zeigt sich in der Praxis, dass die Faserballen von zum Verspinnen vorgesehenen Fasern, insbesondere solche mit Naturfasern, haeufig Fremdkoerper (z.B. Metallteile, Steine, usw.) enthalten. Die gegen diese Fremdkoerper stos.senden Zaehne der Zahnscheiben werden durch dieselben beschaedigt und dadurch, je nach den vorliegenden Umstaenden, mehr oder weniger rasch unbrauchbar, worauf die Scheibe mit dem beschaedigten Zahn ersetzt werden muss. Ein Nachteil der bekannten Ballenraspel besteht darin, dass zum Ersetzen einer sölchen Scheibe die die Scheiben tragende Welle samt den Scheiben,* Distanzstuecken und Zugbolzen abmontiert, zerlegt und nach dem Einfuegen der neuen Scheibe wieder zusammengebaut und eingesetzt werden muss. Das Ersetzen einer Scheibe bedingt somit eine grosse Arbeitsbelastung und einen relativ langen Betriebsunterbruch.It has been shown in practice that the fiber bales of fibers intended for spinning, in particular those with natural fibers, often contain foreign bodies (eg metal parts, stones, etc.). The against this stranger Body impacting teeth of the toothed washers are damaged by them and, depending on the circumstances, more or less quickly unusable, after which the disc with the damaged tooth must be replaced. A disadvantage of the known Ballenraspel is that for replacing a disk sölchen the shaft carrying discs, together with the wheels, and tie bolt * Distanzstuecken removed must be disassembled and re-assembled after the insertion of the new plate and used. Replacing a pane therefore requires a large workload and a relatively long downtime.

Ausserdem ist wegen der Verwendung von Zugbolzen, welche durch in den Saegezahnscheiben vorhandene Oeffnungen gestossen werden, die rotationsmaessige Einstellmoeglichkeit der Scheiben beschraenkt. Als Folge davon kann die Staffelung der Zaehne verschiedener Scheiben nicht beliebig gewaehlt werden.In addition, because of the use of tension bolts which are pushed through openings in the saw toothed disks, the rotational adjustment of the disks is limited. As a result, the staggering of the teeth of different discs can not be chosen arbitrarily.

Diese Nachteile sollen gemaess der vorliegenden Erfindung vermieden werden. Diese ist dadurch gekennzeichnet, dass jede der Zahnscheiben zwei Halbscheiben umfasst, welche im wesentlichen die Form eines halben Kreisringes haben, dass fuer jede Halbscheibe eine ungefaehr halbkreisringfoermige Schale vorgesehen ist, dass jede Halbscheibe in je eine Schale eingegossen ist, und dass die Schalen von sich zu einer Zahnscheibe zusammensetzenden Halbscheiben ringfoermig die Welle umschliessen, loesbar aneinander befestigt und mit der Welle durch einen Pressitz fest verbunden sind.These disadvantages are to be avoided according to the present invention. This is characterized in that each of the toothed disks comprises two half disks, which essentially have the shape of a half circular ring, that an approximately semicircular shell is provided for each half disk, that each half disk is cast into one shell each, and that the shells are self-contained to form a toothed disk, half-disks enclose the shaft in a ring shape, releasably attached to one another and firmly connected to the shaft by a press fit.

Gemaess der Erfindung ergibt sich somit der Vorteil, dass die Zahnscheiben rotationsmaessig in jede gewuenschte Position eingestellt werden koennen. Diesbezuegliche Einschraenkungen, welche beispielsweise durch die erwaehnten Zugbolzen oder durch die Benuetzung einer Keilnut verursacht sein koennen, sind vermieden.According to the invention, there is thus the advantage that the toothed disks rotate in each ge desired position can be set. These restrictions, which may be caused, for example, by the mentioned pull bolts or by the use of a keyway, are avoided.

Weil es sich gezeigt hat, dass unerwuenschte Vibrationen der Abtragwalze bei geeigneter, rotationsmaessiger Staffelung der Zaehne verschiedener Zahnscheiben vermieden oder wesentlich reduziert werden koennen, weist die erfindungsgemaesse Walze zusaetzlich den Vorteil auf, dass solche Vibrationen auf einfache Weise eliminiert oder stark reduziert werden koennen. Ausserdem erhaelt man die Moeglichkeit, die rotationsmaessige Staffelung der Zaehne fuer eine optimale Arbeitsweise der Abtragwalze in beiden Drehrichtungen derselben einstellen zu koennen.Because it has been shown that undesired vibrations of the removal roller can be avoided or significantly reduced if the teeth of different toothed disks are staggered in a suitable rotation, the roller according to the invention has the additional advantage that such vibrations can be easily eliminated or greatly reduced. In addition, one gets the possibility to be able to adjust the rotational staggering of the teeth for an optimal functioning of the removal roller in both directions of rotation thereof.

Das Eingiessen der Halbscheiben in die Schalen erlaubt zudem, innerhalb weiter Grenzen das fuer jeden dieser Teile geeignetste Material zu waehlen. Es ist auf diese Weise z.B. moeglich, das Gewicht der Schalen klein zu halten, indem man diese aus einem leichten Material herstellt, und die Zaehne und/oder Zahnscheibe aus einem Material grosser Haerte herzustellen, um damit fuer diese eine lange Lebensdauer zu erhalten.Pouring the half disks into the shells also allows the selection of the most suitable material for each of these parts within wide limits. It is e.g. it is possible to keep the weight of the shells small by making them from a light material, and to manufacture the teeth and / or toothed washer from a material of great hardness in order to obtain a long life for them.

Im folgenden sei die Erfindung anhand eines Ausfuehrungsbeispiels und der Figuren der Zeichnung naeher erlaeutert. In der letzteren ist

  • Fig. 1 eine Seitenansicht der Abtragwalze,
  • Fig. 2 ein Querschnitt durch diese laengs der Linie II-II von Fig. 1 und
  • Fig. 3 eine-Seitenansicht einer Halbscheibe.
The invention is explained in more detail below with the aid of an exemplary embodiment and the figures of the drawing. In the latter is
  • 1 is a side view of the removal roller,
  • Fig. 2 shows a cross section along this line II-II of Fig. 1 and
  • Fig. 3 is a side view of a half disc.

Die in Fig. 1 gezeigte Abtragwalze 11 weist eine, auch in Fig. 2 gezeigte, Welle 12 auf. Die letztere ist an ihren beiden Enden in Lagern 13 rotierbar gelagert, welche ihrerseits auf Traegern 14 angebracht sind. Die Welle 12 wird ausserdem durch nicht gezeigte Mittel zur Rotation angetrieben.The removal roller 11 shown in FIG. 1 has a shaft 12, also shown in FIG. 2. The latter is rotatably supported at its two ends in bearings 13, which in turn are mounted on carriers 14. The shaft 12 is also driven by means not shown for rotation.

Auf der Welle 12 sind Scheiben angebracht. Jede Scheibe umfasst zwei in einer Ebene liegende Halbscheiben 15 und 16. Die Halbscheibe 15 ist in eine Schale 17 und die Halbscheibe 16 in eine Schale 18 eingegossen. Die beiden Schalen 17,18 umschliessen die Welle 12 ringfoermig, sind jedoch, wie auch die Halbscheiben 15,16, durch Schlitze 21 voneinander getrennt. Die Schalen 17,18 sind durch Schrauben 22 loesbar aneinander befestigt, fest an die Welle 12 angepresst und auf diese Weise durch einen Pressitz mit der Welle 12 fest verbunden. Jede der Schalen 17,18 umfasst einen Mantel 27 (Fig. 2), der, abgesehen von der durch den Schlitz 21 bedingten minimalen Abweichung, die Form eines Halbzylinders hat und auf dessen Innenseite Rippen 23 angebracht sind. Am Ort der Schrauben 22 ist der Mantel 27 mit Einbuchtungen 28 versehen. Die aus je einer Halbscheibe 15,16 bestehenden Scheiben sind zur Welle 12 senkrecht angeordnet. Sie koennen aber, falls dies erwuenscht ist, auch um einen Winkel . gegen die Welle 12 geneigt sein, wie dies durch die gestrichelt gezeichneten Scheiben 15a und 16a gezeigt ist. Laengs der Welle 12 ist eine Vielzahl solcher Paare von Halbscheiben 15,16 und Schalen 17,18 vorhanden. Im gezeigten Beispiel liegen die Schalen 17,18 aneinander an.Disks are attached to the shaft 12. Each disc comprises two half discs 15 and 16 lying in one plane. The half disc 15 is cast into a shell 17 and the half disc 16 is cast into a shell 18. The two shells 17, 18 enclose the shaft 12 in a ring shape, but, like the half disks 15, 16, are separated from one another by slots 21. The shells 17, 18 are detachably fastened to one another by screws 22, pressed firmly onto the shaft 12 and in this way firmly connected to the shaft 12 by a press fit. Each of the shells 17, 18 comprises a jacket 27 (FIG. 2) which, apart from the minimal deviation caused by the slot 21, has the shape of a semicylinder and on the inside of which ribs 23 are attached. At the location of the screws 22, the jacket 27 is provided with indentations 28. The disks, each consisting of a half disk 15, 16, are arranged perpendicular to the shaft 12. You can, however, if desired, also by an angle. be inclined against the shaft 12, as shown by the disks 15a and 16a shown in broken lines. A large number of such pairs of half-disks 15, 16 and shells 17, 18 are present along the shaft 12. In the example shown, the shells 17, 18 abut one another.

In Fig. 3 ist zur weiteren Veranschaulichung noch eine einzelne Halbscheibe 16 gezeigt. Die Halbscheiben 15,16 haben im wesentlichen die Form eines halben Kreisringes. Sie sind an ihrem aeusseren Umfang mit Zaehnen 24 versehen. Jede der Halbscheiben 15,16 ist, abgesehen voh der durch die Schlitze 21 bedingten Wegnahme, ueber einen halben Kreisring, der sich von ihrem inneren Umfang nach aussen bis zum gedachten Halbkreis 25 (Fig.In FIG. 3, a single half disk 16 is shown for further illustration. The half disks 15, 16 have essentially the shape of a half circular ring. They are provided with teeth 24 on their outer circumference. Each of the half disks 15, 16 is, apart from the removal caused by the slots 21, over a half circular ring which extends outward from its inner circumference to the imaginary half circle 25 (FIG.

3) hin erstreckt, in die zugehoerige Schale eingegossen. In der Fig. 3 faellt der Halbkreis 25 mit der aeusseren Oberflaeche des Mantels 27 der Schale 17 bzw. 18 zusammen.3) extends into the corresponding shell. 3, the semicircle 25 coincides with the outer surface of the shell 27 of the shell 17 and 18, respectively.

Im Betrieb der Abtragwalze 11 wird die Welle 12 und werden damit auch die je zwei Halbscheiben 15,16 umfassenden Scheiben in Rotation versetzt. Dabei werden durch die Zaehne 24 Faserflocken aus dem z.B. auf den Roststaeben 26 angepressten Faserballen herausgerissen. Diese Flocken werden laufend abgesaugt und zur weiteren Verarbeitung weiter befoerdert. Waehrend dieses Oeffnungsprozesses kann der Faserballen z.P. dauernd laengs der Roststaebe 26 hin- und hergeschoben werden, wobei je nach der Richtung des Verschiebens die Rotation der Welle 12 im einen oder im entgegengesetzten Drehsinn erfolgt. Falls sich die Scheiben, wie durch die Halbscheiben 15a und 16a gezeigt ist, in einer Schraeglage befinden, so fuehren sie eine taumelnde Bewegung aus. Daher wird durch jede Scheibe praktisch der gesamte Bereich zwischen zwei benachbarten Roststaeben 26 erfasst.During operation of the removal roller 11, the shaft 12 and thus also the disks comprising two half disks 15, 16 are set in rotation. In this case, 24 fiber flakes from e.g. Torn out fiber bales pressed onto the rust bars 26. These flakes are continuously sucked off and conveyed for further processing. During this opening process, the fiber bale can e.g. are constantly pushed back and forth along the grate bars 26, the rotation of the shaft 12 taking place in one or in the opposite direction of rotation, depending on the direction of displacement. If the disks are in an inclined position, as shown by the half disks 15a and 16a, then they wobble. Therefore, practically the entire area between two adjacent grate bars 26 is covered by each pane.

Wenn der Fall eintritt, dass durch einen im Faserballen vorhandenen Fremdkoerper ein Zahn 24 einer Halbscheibe 15,16 beschaedigt wurde, so wird vom entsprechenden Paar von Halbscheiben 15,16 mit den Schalen 17,18 durch Loesen der Schrauben 22 die den beschaedigten Zahn aufweisende Einheit Halbscheibe-Schale von der Welle 12 entfernt und an deren Stelle eine neue Einheit eingesetzt. Dies wird durchgefuehrt, ohne die Welle 12 demontieren und an den anderen sich auf der Welle 12 befindlichen Halbscheiben und Schalen etwas vorkehren zu'muessen. Auch bei der normalen Abnuetzung der Scheibenpaare 15,16 kann in gleicher Weise vorgegangen werden.If the case occurs that a tooth 24 of a half-disk 15, 16 has been damaged by a foreign body present in the fiber bale, then the corresponding pair of half-disks 15, 16 with the shells 17, 18 thru Loosen the screws 22 and remove the damaged half-shell shell from the shaft 12 and insert a new unit in its place. This is carried out without dismantling the shaft 12 and having to do something on the other half disks and shells located on the shaft 12. The same procedure can also be used for the normal wear of the disk pairs 15, 16.

Die Moeglichkeit einer Beschaedigung der Zaehne 24 ist wesentlich kleiner, wenn diese aus hartem Material bestehen. Harte Zaehne koennen beispielsweise erhalten werden, indem man Halbscheiben 15,16 aus Stahl verwendet, welche am Ort der Zaehne 24 gehaertet sind. Gegebenenfalls kann zusaetzlich zu den gehaerteten Zaehnen 24 auch ein an die letzteren angrenzender, halbkreisringfoermiger Bereich der Halbscheiben 15,16, der sich beispielsweise von den Zaehnen bis zum gedachten Halbkreis 25 (Fig. 3) erstreckt, oder die gesamte Halbscheibe gehaertet sein.The possibility of damage to the teeth 24 is considerably smaller if they consist of hard material. Hard teeth can be obtained, for example, by using steel half disks 15, 16, which are hardened at the location of the teeth 24. Optionally, in addition to the hardened teeth 24, an area of the half-disks 15, 16 adjacent to the latter, which extends for example from the teeth to the imaginary semi-circle 25 (FIG. 3), or the entire half-disk, can be hardened.

Falls das Gesamtgewicht der Abtragwalze 11 klein gehalten werden soll, so werden die Schalen 17,18, wie dies im gezeigten Beispiel der Fall ist, als nicht massive Elemente ausgebildet. Zur Gewichtsverminderung sind sie in einer vorteilhaften Ausfuehrungsform aus Aluminium hergestellt.If the total weight of the removal roller 11 is to be kept small, the shells 17, 18, as is the case in the example shown, are designed as non-solid elements. To reduce weight, they are made from aluminum in an advantageous embodiment.

Durch das Eingiessen der Halbscheiben 15,16 in die Schalen 17,18 ergibt sich der wesentliche Vorteil, dass das Material, aus welchem die Scheiben und Schalen bestehen, weitgehend unabhaengig voneinander gewaehlt werden kann. Insbesondere koennen, wie bereits erwaehnt, die Scheiben aus Stahl und die Schalen aus Aluminium hergestellt sein.By pouring the half disks 15, 16 into the shells 17, 18 there is the essential advantage that the material from which the disks and shells are made can be selected largely independently of one another. In particular, as already mentioned, the disks can be made from steel and the shells from aluminum.

Das Eingiessen der Halbscheiben 15,16 in die Schalen 17 bzw. 18 erfolgt vorteilhafterweise durch Druck- oder Spritzgiessen. Falls eine besonders feste Verbindung der Halbscheiben mit den Schalen angestrebt wird, so werden an den Halbscheiben diesem Zwecke dienende Ausgestaltungen, wie Bohrungen oder kleine Erhoehungen, vorgesehen. In Fig. 3 sind solche beispielsweise Bohrungen 29 gezeigt.The half-disks 15, 16 are advantageously poured into the shells 17 and 18, respectively, by pressure or injection molding. If a particularly firm connection of the half disks to the shells is desired, then configurations designed for this purpose, such as bores or small elevations, are provided on the half disks. Such bores 29 are shown in FIG. 3, for example.

Es ist ersichtlich, dass die Schalen 17,18 den Abstaenden benachbarter Roststaebe 26 angepasst sind, d.h. dass deren Ausdehnung in der Laengsrichtung der Welle 12 gleich der Teilung benachbarter Staebe 26 ist. Durch das Anliegen der Schalen aneinander erhaelt man eine zusaetzliche Festigkeit der Walze, so dass ein eventuelles Vorsehen von Distanzstuecken zwischen zusammengefuegten Schalenpaaren 17,18 sich eruebrigt. Die Schalenpaare 17,18 koennen aber auch in der Laengsrichtung der Welle 12 gegenseitige Abstaende voneinander aufweisen (nicht gezeigt).It can be seen that the shells 17, 18 are adapted to the spacing of adjacent grate bars 26, i.e. that their extension in the longitudinal direction of the shaft 12 is equal to the division of adjacent bars 26. Through the abutment of the shells against one another, an additional strength of the roller is obtained, so that a possible provision of spacers between mated shell pairs 17, 18 is not necessary. The pairs of shells 17, 18 can, however, also have mutual distances from one another in the longitudinal direction of the shaft 12 (not shown).

Im obersten Teil der Fig. 2 ist mit gestrichelten Linien eine Staffelung von Scheiben gezeigt, bei welcher die Zaehne benachbarter Scheiben um einen Betrag gegeneinander radial gestaffelt sind, der in diesem Fall gleich einem Viertel des Abstandes benachbarter Zaehne 24 einer Scheibe ist.In the uppermost part of FIG. 2, a staggered arrangement of disks is shown with broken lines, in which the teeth of adjacent disks are staggered radially with respect to one another, which in this case is equal to a quarter of the distance between adjacent teeth 24 of a disk.

Claims (10)

1. Abtragwalze zum mechanischen Oeffnen von Faserballen durch Losloesen von Faserflocken aus denselben mittels laengs einer rotierbaren Welle an dieser befestigter, kreisringfoermiger Zahnscheiben, welche ueber ihrem aeusseren Umfang mit Zaehnen versehen sind, dadurch gekennzeichnet, dass jede der Zahnscheiben zwei Halbscheiben (15,16) umfasst, welche im wesentlichen die Form eines halben Kreisringes haben, dass fuer jede Halbscheibe (15,16) eine ungefaehr halbkreisringfoermige Schale (17,18) vorgesehen ist, dass jede Halbscheibe (15,16) in je eine Schale (17,18) eingegossen ist, und dass die Schalen (17,18) von sich zu einer Zahnscheibe zusammensetzenden Halbscheiben (15,16) ringfoermig die Welle (12) umschliessen, loesbar aneinander befestigt und mit der Welle (12) durch einen Pressitz fest verbunden sind.1. Removal roller for mechanically opening fiber bales by loosening fiber flakes from the same by means of a rotatable shaft attached to it, circular toothed disks attached to it, which are provided with teeth over their outer circumference, characterized in that each of the toothed disks has two half disks (15, 16) which essentially have the shape of a half circular ring, that an approximately semicircular shell (17, 18) is provided for each half disc (15, 16), that each half disc (15, 16) each has a shell (17, 18) is cast in, and that the shells (17, 18) of half discs (15, 16), which form a toothed disc, surround the shaft (12) in an annular manner, are detachably fastened to one another and are firmly connected to the shaft (12) by a press fit. 2. Abtragwalze nach Anspruch 1, dadurch gekennzeichnet, dass mindestens die Zaehne (24) der Halbscheiben (15,16) und gegebenenfalls ein an die Zaehne (24) angrenzender, ungefaehr halbkreisringfoermiger Bereich der Halbscheiben (15,16) aus hartem Material, vorzugsweise gehaertetem Stahl, bestehen.2. Abtragwalze according to claim 1, characterized in that at least the teeth (24) of the half-disks (15,16) and optionally an adjacent to the teeth (24), approximately semicircular area of the half-disks (15,16) made of hard material, preferably hardened steel. 3. Abtragwalze nach Anspruch 1, dadurch gekennzeichnet, dass die Schalen (17,18) aus einem relativ leichten Material, beispielsweise aus Aluminium, bestehen.3. Removal roller according to claim 1, characterized in that the shells (17, 18) consist of a relatively light material, for example aluminum. 4. Abtragwalze nach Anspruch 1, dadurch gekennzeichnet, dass jede der Schalen (17,18) einen Mantel (27), der die Form eines ungefaehr halben Kreiszylinders hat und auf dessen Innenflaeche Rippen (23) angebracht sind, umfasst.4. removal roller according to claim 1, characterized in that each of the shells (17, 18) comprises a jacket (27) which has the shape of an approximately half circular cylinder and on whose inner surface ribs (23) are attached. 5. Abtragwalze nach Anspruch 1, dadurch gekennzeichnet, dass die Schalen (17,18) aneinanderliegend laengs der Welle angeordnet sind, und dass ihre Stirnseiten in zur Welle (12) senkrechten Ebenen liegen.5. Abtragwalze according to claim 1, characterized in that the shells (17, 18) are arranged adjacent to each other along the shaft, and that their end faces lie in planes perpendicular to the shaft (12). 6. Abtragwalze nach Anspruch 1, dadurch gekennzeichnet, dass die je zwei Halbscheiben (15,16) umfassenden Zahnscheiben in einer bezueglich der Welle schraegen Ebene liegen.6. Abtragwalze according to claim 1, characterized in that the two half-disks (15,16) comprising toothed disks lie in a beveled plane with respect to the shaft. 7. Abtragwalze nach Anspruch 1, dadurch gekennzeichnet, dass die Schalen (17,18) von sich zu einer Zahnscheibe zusammensetzenden Halbscheiben (15,16) mittels einer Schraubenverbindung aneinander befestigt sind.7. Removal roller according to claim 1, characterized in that the shells (17, 18) of half discs (15, 16) which are assembled to form a toothed disc are fastened to one another by means of a screw connection. 8. Abtragwalze nach Anspruch 1, dadurch gekennzeichnet, dass jede Halbscheibe (15,16) ueber einen ungefaehr halbkreisringfoermigen Bereich, der sich von deren inneren Umfang nach aussen ueber einen Teil der Halbscheibe (15,16) erstreckt, in die zugehoerige Schale (17,18) eingegossen ist.8. Abtragwalze according to claim 1, characterized in that each half-disk (15,16) over an approximately semicircular area, which extends from the inner circumference outwards over part of the half-disk (15,16), into the associated shell (17th , 18) is cast in. 9. Abtragwalze nach Anspruch 1, dadurch gekennzeichnet, dass die in je eine Schale (17,18) eingegossenen Halbscheiben (15,16) mit dieser mittels Druck- oder Spritzgiessens zusammengebaut sind.9. Removal roller according to claim 1, characterized in that the half-disks (15, 16) cast into a shell (17, 18) are assembled with the latter by means of pressure or injection molding. 10. Abtragwalze nach Anspruch 1, dadurch gekennzeichnet, dass jede der Halbscheiben (15,16) mit Ausgestaltungen, wie z.B. Bohrungen und/oder Erhoehungen, versehen ist, welche der Verstaerkung der Verankerung der Schale (17,18) mit der in diese eingegossenen Halbscheibe (15,16), dienen.10. Removal roller according to claim 1, characterized in that each of the half disks (15, 16) with configurations such as e.g. Bores and / or elevations are provided, which serve to reinforce the anchoring of the shell (17, 18) with the half disc (15, 16) cast into it.
EP81110768A 1981-02-20 1981-12-24 Removing cylinder for bales of fibres Expired EP0058781B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81110768T ATE13699T1 (en) 1981-02-20 1981-12-24 ROLLER FOR FIBER BALLS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1134/81 1981-02-20
CH113481 1981-02-20

Publications (2)

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EP0058781A1 true EP0058781A1 (en) 1982-09-01
EP0058781B1 EP0058781B1 (en) 1985-06-05

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ID=4203283

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EP81110768A Expired EP0058781B1 (en) 1981-02-20 1981-12-24 Removing cylinder for bales of fibres

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US (1) US4457058A (en)
EP (1) EP0058781B1 (en)
JP (1) JPS57149517A (en)
AT (1) ATE13699T1 (en)
DE (1) DE3170900D1 (en)
IN (1) IN157550B (en)

Cited By (7)

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US4513479A (en) * 1983-06-24 1985-04-30 Rieter Machine Works Limited Apparatus for opening textile fiber bales
US4928354A (en) * 1988-02-04 1990-05-29 Sulzer Brothers Limited Method and apparatus for removal of fiber flocks from fiber bales
US5105508A (en) * 1989-04-26 1992-04-21 Maschinenfabrik Rieter Ag Method and apparatus for the opening of fiber flocks from fiber bales
EP0928839A1 (en) * 1998-01-09 1999-07-14 Maschinenfabrik Rieter Ag Apparatus for removing fiber flocks and method for making teeth of a plucking cylinder
WO2013153444A1 (en) 2012-04-13 2013-10-17 Maschinenfabrik Rieter Ag Opening roller
EP3663442A1 (en) 2018-12-03 2020-06-10 Maschinenfabrik Rieter AG Extraction roller
EP3663443A1 (en) 2018-12-03 2020-06-10 Maschinenfabrik Rieter AG Extraction roller

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CH669215A5 (en) * 1986-04-10 1989-02-28 Heinz Buess OPENER ROLLER.
US4872247A (en) * 1986-09-09 1989-10-10 Calp Kogyo Kabushiki Kaisha Combination roll
US4844353A (en) * 1988-03-04 1989-07-04 Agrimetal Inc. Straw-shredding knife and rotary knife assembly
US5639035A (en) * 1994-03-31 1997-06-17 Mclanahan Corp Sludge treatment unit
US5601239A (en) * 1995-07-05 1997-02-11 Wood Waste Energy, Inc. Bulk material shredder and method
US6131837A (en) * 1999-07-28 2000-10-17 New Holland North America, Inc. Segmented crop processor roll for forage harvester
US8409063B2 (en) * 2009-08-11 2013-04-02 Goss International Americas, Inc. Nip rollers with removable disks
CN110079897B (en) * 2019-05-17 2021-06-18 徐州国华纺织科技有限公司 Water absorption factor capable of absorbing water rapidly

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FR565907A (en) * 1922-05-11 1924-02-07 John Hetherington & Sons Ltd Improvements to combing machines for cotton, wool and other textiles
FR1528453A (en) * 1966-06-27 1968-06-07 Hispano Suiza Suisse Sa Improvements to machines for husking bales of fibrous material

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513479A (en) * 1983-06-24 1985-04-30 Rieter Machine Works Limited Apparatus for opening textile fiber bales
US4928354A (en) * 1988-02-04 1990-05-29 Sulzer Brothers Limited Method and apparatus for removal of fiber flocks from fiber bales
US5105508A (en) * 1989-04-26 1992-04-21 Maschinenfabrik Rieter Ag Method and apparatus for the opening of fiber flocks from fiber bales
EP0928839A1 (en) * 1998-01-09 1999-07-14 Maschinenfabrik Rieter Ag Apparatus for removing fiber flocks and method for making teeth of a plucking cylinder
WO2013153444A1 (en) 2012-04-13 2013-10-17 Maschinenfabrik Rieter Ag Opening roller
EP3663442A1 (en) 2018-12-03 2020-06-10 Maschinenfabrik Rieter AG Extraction roller
EP3663443A1 (en) 2018-12-03 2020-06-10 Maschinenfabrik Rieter AG Extraction roller

Also Published As

Publication number Publication date
IN157550B (en) 1986-04-19
EP0058781B1 (en) 1985-06-05
JPH0316404B2 (en) 1991-03-05
DE3170900D1 (en) 1985-07-11
US4457058A (en) 1984-07-03
JPS57149517A (en) 1982-09-16
ATE13699T1 (en) 1985-06-15

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