EP0861930B2 - Opening roller for an open-end spinning machine - Google Patents

Opening roller for an open-end spinning machine Download PDF

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Publication number
EP0861930B2
EP0861930B2 EP98101428A EP98101428A EP0861930B2 EP 0861930 B2 EP0861930 B2 EP 0861930B2 EP 98101428 A EP98101428 A EP 98101428A EP 98101428 A EP98101428 A EP 98101428A EP 0861930 B2 EP0861930 B2 EP 0861930B2
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EP
European Patent Office
Prior art keywords
clothing
opening roller
wire
roller according
clothing wire
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
EP98101428A
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German (de)
French (fr)
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EP0861930A3 (en
EP0861930A2 (en
EP0861930B1 (en
Inventor
Eberhard Hofmann
Klaus Schoberth
Christian Göbel
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.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Rieter Ingolstadt Spinnereimaschinenbau AG
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Application filed by Rieter Ingolstadt Spinnereimaschinenbau AG filed Critical Rieter Ingolstadt Spinnereimaschinenbau AG
Priority to EP02012599A priority Critical patent/EP1249525B1/en
Publication of EP0861930A2 publication Critical patent/EP0861930A2/en
Publication of EP0861930A3 publication Critical patent/EP0861930A3/en
Application granted granted Critical
Publication of EP0861930B1 publication Critical patent/EP0861930B1/en
Publication of EP0861930B2 publication Critical patent/EP0861930B2/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 for an open-end spinning machine according to the preamble of claim 1.
  • the most diverse opening rollers for open-end spinning machines are known.
  • an opening roller is known in which a helically preformed clothing wire is applied to the lateral surface of the opening roller and clamped there. This should make it possible to use a harder Gamiturdraht.
  • the clothing carrier is made of die-cast or, for example, from an extruded profile.
  • the clothing carrier carries on its outer circumference a set for dissolving slivers in individual fibers.
  • This clothing is formed by a wire applied in helical turns clothing wire.
  • the clothing wire is deformed and wound under tension on the clothing carrier.
  • ribs are mounted on the clothing carrier, which are supported radially on a hub.
  • FR-A 21 28 779 it is known to cure a clothing wire by a diffusion process, wherein the clothing wire is wound on a carrier in turns and cured in a salt bath. From the abstract of Japan JP-A 03019922 a clothing wire is known whose teeth are coated with a nickel-phosphorus alloy.
  • the clothing carrier is annular, and forms, together with a base body which is fixed on the axis of the opening roller bearing, and with a lid, the opening roller.
  • the clothing is also designed in the form of a spirally wound clothing wire.
  • the clothing carrier of the prior art consist essentially of alloys of light metals, which are easy to prepare and work.
  • annular clothing carrier made of thin-walled steel rings known.
  • the clothing wire consists in a known manner of a hardened steel wire, so that it usually meets the wear requirements, for example in the processing of cotton. If a higher wear resistance is required, it is known to coat the entire opening roller or the Gamiturlini together with clothing with a wear protection layer. For example, this is done by placing the opening roller in a coating bath in which then hard material grains, e.g. Diamond grains, deposit on the opening roller and thereby significantly increase their wear resistance.
  • hard material grains e.g. Diamond grains
  • opening rollers made of die-cast have the disadvantage that their surface is porous and remain during coating in coating baths residues of the coating bath in the pores, whereby contamination of the coating bath by the previous bath takes place.
  • Another disadvantage is that in addition to the clothing other parts of the opening roller are coated, although this is not necessary or even undesirable. This disadvantage also results in a higher consumption of coating material, which unnecessarily increases the costs.
  • a method for coating a clothing wire is known.
  • a certain length of the clothing wire is wound around a carrier, wherein adjacent turns of the wire face each other and surfaces of the wire are coated with a coating material.
  • Object of the present invention is therefore to form an opening roller such that the disadvantages of the prior art are avoided and a simple cost-effective design of the opening roller is achieved, at the same time a high wear resistance of the opening roller is achieved without providing the entire opening roller with a wear protection , Another object is to provide a method for producing a Gamiturdrahtes for such an opening roller.
  • the opening roller is according to the invention garnished with a clothing wire, which has been coated before garnishing, it is achieved that the opening roller itself no longer needs to be coated.
  • This has the advantage that only the clothing wire itself is exposed to the coating process and the associated stresses, such as temperature influences.
  • the clothing wire is already preformed before coating, so that no tensions, which are caused by the deformation of the wire, are applied to the opening roller by garnishing the clothing carrier or the opening roller.
  • the inventively designed opening roller also has the advantage that for garnishing the opening roller of the clothing wire practically no longer needs to be deformed, so that it also made of a very hard and may consist brittle steel and also a brittle coating can be used, or no consideration must be taken to the coating thickness. If an inventive already pre-coated, ie provided with a wear protection layer clothing wire for the opening roller, no consideration needs to be taken to see whether the other parts of the opening roller with the coating method or the coating media incompatibilities.
  • the components of the opening roller which are often produced from die-cast aluminum, are known to have fine pores which, for example, can lead to contamination in chemical coating baths. With an inventively designed opening roller, these problems do not occur, so that in the inventively designed opening roller also the known die-castings can be used again.
  • the clothing wire By preforming the clothing wire according to the invention, it can advantageously be fully through-hardened, i. not only the teeth, as usual with the previous clothing wires, but also the tooth root.
  • garnishing the opening roller or the clothing carrier this namely no longer be deformed, so that a clothing wire with high hardness and brittleness can be used.
  • the deformation of the clothing wire takes place in such a way that the clothing wire is bent in the plane in which the clothing teeth lie.
  • the clothing wire is preformed so that it already has an inner diameter which is equal to or greater than the diameter of its cylindrical receptacle on the clothing carrier. This ensures that the clothing wire can be easily mounted on the clothing carrier.
  • the individual turns of the clothing wire have the same diameter.
  • the deformation of the Gamiturdrahtes is performed to a degree by which the inner diameter of a spiral turn of the clothing wire is smaller than the diameter of the cylindrical receptacle on the clothing carrier. It is thereby achieved that the garnishing of the opening roller is particularly simple, since, in particular, when a groove for inserting the clothing wire is used on the clothing carrier, it can be easily inserted. Due to the smaller diameter of the clothing wire endeavored without external pressure hineinzlegen into the groove of the clothing wearer.
  • a particularly favorable value of the stated ratio is between 1.2 and 0.8, whereby a value between 1.1 and 0.9 has been found to be ideal.
  • the Gamiturdraht is not only coated before it is mounted on the clothing carrier, but also heat treated. This allows the coating to be completed, so that when the clothing wire has been mounted on the opening roller, it requires no further processing steps. It is advantageous if the clothing wire is guided axially when being mounted on the opening roller, because this can be dispensed with grooves for receiving the set. It is particularly advantageous if the clothing wire has a foot which has an axial extent which is greater than the axial extent of the teeth, so that when laying the clothing wire foot to foot without the use of grooves a perfect fit of the set achieved can be.
  • the opening roller with a groove for receiving the clothing wire Due to the advantageous embodiment of the opening roller with a groove for receiving the clothing wire is achieved that a simple clothing wire can be used and still the axial distance of the individual turns of the clothing wire is uniform.
  • the axial width of this groove has a value which is greater than the axial extent of the clothing wire, but at the same time smaller than the axial extent of the clothing wire plus 0.2 mm. This will create enough space to ensure that the coating on the Gamiturdraht when inserting the wire into the groove does not flake off.
  • the clothing carrier is annular and has a wall thickness between 1 mm and 5 mm.
  • a clothing wire is chemically coated with nickel, hard-material grains being embedded in the nickel layer.
  • the opening roller designed in this way also has good properties when dissolving the fibers.
  • the inventive method for producing a clothing wire is achieved that after coating no such deformation of the clothing wire must be made more to its assembly, which damages the coating. Namely, wear-resistant coatings would flake off or be damaged if wire was formed into a spiral shape only after coating the clothing. Due to the axially spaced turns of the clothing wire during coating it is achieved that the coating is uniform. Since the clothing wire is present as a free spiral when coating, the clothing wire can be uniformly coated from all sides. Further advantageous embodiments of the invention are described in the remaining subclaims.
  • FIG. 1 shows a plan view, partly in section, of an opening roller according to the invention.
  • the opening roller 1 consists of a base body 11 which receives a clothing carrier 12.
  • the main body 11 is mounted by means of a press fit on a shaft 13, via which the opening roller 1 is mounted in the bearing 15.
  • the shaft 13 and thus also the opening roller 1 are driven by means of a belt, not shown, which cooperates with the whorl 14 of the shaft 13.
  • Base body 11 and clothing carrier 12 are connected to each other by means of screws 16.
  • the clothing carrier 12 has an opening 17 which is closed by a lid 18.
  • the clothing carrier 12 circumferentially carries the clothing 2, which is provided with teeth 23. These solve in open-end spinning devices in a known manner a presented sliver to individual fibers.
  • a groove 21 which is formed in the cylindrical surface 22 of the clothing carrier 12. The groove 21 is guided spirally around the lateral surface 22 and extends from the region of the rim 121 of the clothing carrier 12 to the region of the rim 111 of the main body 11.
  • the clothing wire 3 is spirally preformed according to the invention and r coated and inserted in this preformed state in the groove 21 of the opening roller 1.
  • the clothing wire 3 has teeth 23, which are formed by the erfndungswashe embodiment of the opening roller particularly wear-resistant.
  • the bottom of the groove 21 forms the receptacle 210 for the clothing wire 3, on which rests this.
  • this is advantageous no longer jammed or caulked, as is known in the opening rollers of the prior art, but by the configuration of the diameter of the receptacle 210 in connection with the configuration of the inner diameter of the turns of the preformed clothing wire, It is achieved that the clothing wire safely remains after insertion into the groove 21, without further attachment measures must be made.
  • the inner diameter of the preformed clothing wire is smaller than that of its receptacle 210.
  • the axial extent of the groove, i. the width of the groove 21, in such a case designed (ratio of internal diameter prefabricated Gamiturdraht to take-up diameter) need not develop a clamping action.
  • the prefabricated clothing wire has a larger inner diameter than the diameter of the receptacle 210, it may be advantageous if the clothing wire including its coating is wider than the width of the groove 21.
  • a secure fastening of the clothing wire to the opening roller is achieved be made without caulking the ends of the clothing wire on the opening roller, as is the case in the prior art.
  • a secure hold of the clothing wire is achieved at the opening roller both by the particular configuration of the inner diameter of the Gamiturdrahtes and additionally the clothing wire including coating is wider than the width of the groove 21. It should be noted that during assembly of the clothing wire 3 on the opening roller of the clothing wire does not have to be widened so far that thereby the coating is damaged or destroyed by excessive deformation. Likewise, the width of the clothing wire in relation to the width of the groove 21 is to be selected so that despite desired clamping effect damage to the clothing wire or its coating is avoided when inserted into the groove 21.
  • Figure 2 shows a sectional view of an opening roller, which is designed solid and whose one side is closed with a cover 4.
  • the cover 4 contains, due to its larger diameter than the opening roller 1 itself, the board 41.
  • the other board 42 is designed in one piece with the opening roller 1.
  • the opening roller has a bore 43, with which it is fastened on a shaft in a manner similar to that of the opening roller of FIG.
  • the lid 4 is screwed by means of screws 16 to the opening roller 1.
  • the lateral surface 22 of the opening roller 1 simultaneously forms the receptacle 210 for the clothing wire 3. So this is not recorded as in Figure 1 in a groove, but it is directly on the lateral surface 22 of the opening roller 1 on.
  • the opening roller can be designed such that in the area between the shelves the clothing wire is moved with a smaller distance to its adjacent turn, as in the region of the shelves 41 and 42, where known in the supply of a Sliver less fibers are presented for combing the opening roller.
  • the garnish of the opening roller arranged in the axial direction at a smaller distance from the adjacent turn as shown in FIG. 2 is particularly advantageous and not bound to the fact that the lateral surface 22, without having a groove 21, forms the receptacle 210 for the clothing wire 3. It is only particularly simple executable, in an opening roller according to Figure 2.
  • the lid 4 can be removed from the opening roller 1, particularly advantageously the Gamiturdraht, without it must be unnecessarily expanded during assembly, are pushed onto the receptacle 210 of the opening roller 1.
  • This makes it possible to form the clothing wire with a particularly small inner diameter in relation to the diameter of the receptacle 210, without the coating is damaged during assembly.
  • a ratio of diameters e.g. with the value 1.1 to 0.9, a sure guarantee that the clothing wire on the opening roller has a firm hold and no longer shifts in their operation.
  • an opening roller is used, e.g. is rotated from the solid and has two solid shelves, is to be considered during assembly that the clothing wire must be lifted over the outer diameter of the board, and to a larger expansion is required. This must be consistent with the deformability of the coating.
  • the opening roller 1 has on its lateral surface 22 a slot 211 into which, as described, the beginning of the clothing wire 3 is lowered.
  • the beginning of the clothing wire can be deformed. Damage to the coating occurring in this case is not of such great importance, since in this area the clothing wire does not come into contact with the fibers.
  • a sealant or an adhesive are introduced. It is particularly favorable if the beginning of the clothing wire is lowered both into a groove of the opening roller and as close as possible to the board facing it, here in FIG. 2 the board 42 is laid.
  • FIG. 3 shows schematically a representation of a clothing wire 3 produced by the method according to the invention. Only 4 turns are shown by way of example, wherein an opening roller of the prior art contains approximately 8 to 13 turns, depending on the width of clothing and lateral surface of the opening roller.
  • the inner diameter D of the pre-wound clothing wire forms the measure that still required for the assembly elastic deformation of the clothing wire.
  • the preformed and coated clothing wire 3 according to the invention of FIG. 3 can be manufactured with a much higher number of turns during manufacture than is required for garnishing a single opening roller.
  • the number of turns is limited only by the handling of the prefabricated clothing wire.
  • FIG. 3 shows a clothing wire 3 which was preformed radially, ie helically, during preforming and was also stretched in the axial direction, so that the clothing wire is practically already adapted in the axial direction of the groove 21 of the opening roller (cf. FIG. 1).
  • this is not necessary in every case, since bending the clothing wire 3 in the axial direction when garnishing the opening roller means only a very small degree of deformation, which has virtually no influence on the coating.
  • the clothing wire can flow around on all sides.
  • preforming the clothing wire again insert a hardening process before or after coating. This is advantageously possible, as for the assembly of the clothing this must be deformed only very slightly, so that, for example, through-hardened clothing wires can be used for the opening roller according to the invention.
  • the inventive method is independent of the material of the clothing wire and allows the use of previously unusable materials for the opening roller itself.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Description

Die vorliegende Erfndung betrifft eine Auflösewalze für eine Offenend-Spinnmaschine gemäß dem Oberbegriff des Patentanspruchs 1. Aus dem Stand der Technik sind die verschiedenartigsten Auflösewalzen für Offenend-Spinnmaschinen bekannt. Aus der DE-A 24 33 769 ist eine Auflösewalze bekannt, bei der ein schraubenlinienförmig vorgeformter Garniturdraht auf die Mantelfläche der Auflösewalze aufgebracht und dort verklemmt wird. Dadurch soll es möglich sein, einen härteren Gamiturdraht zu verwenden. Aus der US-P 5.085.047 ist eine Auflösewalze bekannt, bei der der Garniturträger aus Druckguß hergestellt ist oder beispielsweise auch aus einem Strangpreßprofil. Der Garniturträger trägt an seinem Außenumfang eine Garnitur zum Auflösen von Faserbändern in Einzelfasern. Diese Garnitur wird durch einen in schraubenlinienartigen Windungen aufgebrachten Garniturdraht gebildet. Der Garniturdraht wird dabei verformt und unter Spannung auf den Garniturträger aufgewickelt. Um eine genügende Stabilität für das Aufnehmen des unter Spannung stehenden Garniturdrahtes zu besitzen, sind am Garniturträger Rippen angebracht, die sich auf einer Nabe radial abstützen.The present invention relates to an opening roller for an open-end spinning machine according to the preamble of claim 1. From the prior art, the most diverse opening rollers for open-end spinning machines are known. From DE-A 24 33 769 an opening roller is known in which a helically preformed clothing wire is applied to the lateral surface of the opening roller and clamped there. This should make it possible to use a harder Gamiturdraht. From US-P 5,085,047 an opening roller is known in which the clothing carrier is made of die-cast or, for example, from an extruded profile. The clothing carrier carries on its outer circumference a set for dissolving slivers in individual fibers. This clothing is formed by a wire applied in helical turns clothing wire. The clothing wire is deformed and wound under tension on the clothing carrier. In order to have a sufficient stability for receiving the tensioned clothing wire, ribs are mounted on the clothing carrier, which are supported radially on a hub.

Aus der FR-A 21 28 779 ist es bekannt einen Garniturdraht durch einen Diffusionsprozess zu härten, wobei der Garniturdraht auf einem Träger in Windungen aufgewickelt wird und in einem Salzbad gehärtet wird. Aus dem Abstract of Japan JP-A 03019922 ist ein Garniturdraht bekannt, dessen Zähne mit einer Nickel-Phosphor-Legierung beschichtet sind.From FR-A 21 28 779 it is known to cure a clothing wire by a diffusion process, wherein the clothing wire is wound on a carrier in turns and cured in a salt bath. From the abstract of Japan JP-A 03019922 a clothing wire is known whose teeth are coated with a nickel-phosphorus alloy.

Bei anderen Auflösewalzen ist der Garniturträger ringförmig ausgebildet, und bildet zusammen mit einem Grundkörper, der auf der Achse des Auflösewalzenlagers befestigt ist, und mit einem Deckel die Auflösewalze bildet. Die Garnitur ist dabei ebenso in Form eines spiralförmig aufgezogenen Garniturdrahtes ausgebildet. Die Garniturträger des Standes der Technik bestehen im wesentlichen aus Legierungen von Leichtmetallen, die leicht herstellbar und bearbeitbar sind. Es sind allerdings auch ringförmige Garniturträger aus dünnwandigen Stahlringen bekannt.In other opening rollers, the clothing carrier is annular, and forms, together with a base body which is fixed on the axis of the opening roller bearing, and with a lid, the opening roller. The clothing is also designed in the form of a spirally wound clothing wire. The clothing carrier of the prior art consist essentially of alloys of light metals, which are easy to prepare and work. However, there are also annular clothing carrier made of thin-walled steel rings known.

Der Garniturdraht besteht in bekannter Weise aus einem gehärteten Stahldraht, so daß er in der Regel den Verschleißanforderungen, beispielsweise bei der Verarbeitung von Baumwolle, genügt. Falls eine höhere Verschleißfestigkeit erforderlich ist, ist es bekannt, die gesamte Auflösewalze oder den Gamiturträger samt Garnitur mit einer Verschleißschutzschicht zu beschichten. Beispielsweise geschieht dies dadurch, daß die Auflösewalze in ein Beschichtungsbad eingebracht wird, in dem sich dann im Beschichtungsbad befindliche Hartstoffkörner, z.B. Diamantkörner, auf der Auflösewalze ablagern und dadurch deren Verschleißfestigkeit wesentlich erhöhen.The clothing wire consists in a known manner of a hardened steel wire, so that it usually meets the wear requirements, for example in the processing of cotton. If a higher wear resistance is required, it is known to coat the entire opening roller or the Gamiturträger together with clothing with a wear protection layer. For example, this is done by placing the opening roller in a coating bath in which then hard material grains, e.g. Diamond grains, deposit on the opening roller and thereby significantly increase their wear resistance.

Auflösewalzen des Standes der Technik, die beschichtet werden sollen, um eine genügende Verschleißfestigkeit zu erhalten, stellen jedoch an ihre konstruktive Ausgestaltung besondere Anforderungen, die zu mehr Kosten und aufwendigeren Konstruktionen führen. So haben beispielsweise Auflösewalzen aus Druckguß den Nachteil, daß deren Oberfläche porös ist und beim Beschichten in Beschichtungsbädern Reste des Beschichtungsbades in den Poren zurückbleiben, wodurch eine Verschmutzung des Beschichtungsbades durch das vorhergehende Bad erfolgt. Ein weiterer Nachteil ist, daß neben der Garnitur auch andere Teile der Auflösewalze beschichtet werden, obwohl dies nicht erforderlich oder sogar unerwünscht ist. Dieser Nachteil hat außerdem einen höheren Verbrauch an Beschichtungsmaterial, was die Kosten unnötig erhöht, zur Folge. Darüber hinaus kann es notwendig sein die Auflösewalze nach dem Beschichten einer Wärmebehandlung zu unterziehen. Dabei können Verformungen der Auflösewalze bzw. des Garniturträgers entstehen, die durch Restspannungen im Garniturträger oder durch den Garniturdraht verursacht sind. Ein Einsatz eines Garniturträgers aus Kunststoff ist nur eingeschränkt oder überhaupt nicht möglich.However, dissolving rollers of the prior art, which are to be coated in order to obtain a sufficient wear resistance, however, place particular demands on their structural design, which leads to more costs and more complex designs. Thus, for example, opening rollers made of die-cast have the disadvantage that their surface is porous and remain during coating in coating baths residues of the coating bath in the pores, whereby contamination of the coating bath by the previous bath takes place. Another disadvantage is that in addition to the clothing other parts of the opening roller are coated, although this is not necessary or even undesirable. This disadvantage also results in a higher consumption of coating material, which unnecessarily increases the costs. In addition, it may be necessary to subject the opening roller to a heat treatment after coating. In this case, deformations of the opening roller or the clothing wearer can arise, which are caused by residual stresses in the clothing carrier or by the clothing wire. A use of a clothing carrier made of plastic is limited or not possible.

Aus der WO 96/22410 ist ein Verfahren zur Beschichtung eines Garniturdrahtes bekannt. Dabei wird eine bestimmte Länge des Garniturdrahtes um einen Träger gewickelt, wobei benachbarte Windungen des Drahtes sich gegenüberstehen und Oberflächen des Drahtes mit einem Beschichtungsmaterial beschichtet werden.From WO 96/22410 a method for coating a clothing wire is known. In this case, a certain length of the clothing wire is wound around a carrier, wherein adjacent turns of the wire face each other and surfaces of the wire are coated with a coating material.

Aufgabe der vorliegenden Erfindung ist es daher eine Auflösewalze derart auszubilden, daß die Nachteile des Standes der Technik vermieden werden und eine einfache kostengünstige Ausbildung der Auflösewalze erreicht wird, wobei gleichzeitig eine hohe Verschleißbeständigkeit der Auflösewalze erreicht wird, ohne die gesamte Auflösewalze mit einem Verschleißschutz zu versehen. Eine weitere Aufgabe ist es, ein Verfahren zum Herstellen eines Gamiturdrahtes für eine solche Auflösewalze aufzuzeigen.Object of the present invention is therefore to form an opening roller such that the disadvantages of the prior art are avoided and a simple cost-effective design of the opening roller is achieved, at the same time a high wear resistance of the opening roller is achieved without providing the entire opening roller with a wear protection , Another object is to provide a method for producing a Gamiturdrahtes for such an opening roller.

Dies wird erfindungsgemäß durch die Merkmale des Anspruchs 1 sowie Anspruchs 17 gelöst. Dadurch, daß die Auflösewalze erfndungsgemäß mit einem Garniturdraht garniert ist, der bereits vor dem Garnieren beschichtet worden ist, wird erreicht, daß die Auflösewalze selbst nicht mehr beschichtet werden muß. Dies hat also den Vorteil, daß nur noch der Garniturdraht selbst dem Beschichtungsvorgang und den damit verbundenen Belastungen, z.B. Temperatureinflüsse, ausgesetzt ist. Die Auflösewalze selbst, bzw. wenn diese mehrteilig ausgebildet ist, der Garniturträger, kann daher aus kostengünstigeren Materialien und weniger stabilen Materialien gefertigt werden. Unterstützt wird dies noch dadurch, daß der Garniturdraht vor dem Beschichten bereits vorgeformt ist, so daß durch das Garnieren des Garniturträgers bzw. der Auflösewalze keine Spannungen, die durch das Verformen des Drahtes entstehen, auf die Auflösewalze aufgebracht werden. Dadurch können Verformungen des Garniturträgers auch dann nicht vorkommen, wenn dieser kostengünstig, z.B. aus Kunststoff oder aus einem weniger festen Material oder sehr dünnwandig, hergestellt ist. Die erfindungsgemäß ausgestaltete Auflösewalze hat darüber hinaus den Vorteil, daß zum Garnieren der Auflösewalze der Garniturdraht praktisch nicht mehr verformt werden muß, so daß er auch aus einem sehr harten und spröden Stahl bestehen kann und außerdem auch eine spröde Beschichtung verwendet werden kann, bzw. keine Rücksicht auf die Beschichtungsdicke genommen werden muß. Wird ein erfindungsgemäß bereits vorbeschichteter, d.h. mit einer Verschleißschutzschicht versehender Garniturdraht für die Auflösewalze verwendet, braucht keinerlei Rücksicht darauf genommen werden, ob die übrigen Teile der Auflösewalze mit dem Beschichtungsverfahren oder den Beschichtungsmedien Unverträglichkeiten aufweisen. Die oftmals aus Aluminium-Druckguß hergestellten Bestandteile der Auflösewalze weisen bekanntlich feine Poren auf, die z.B. bei chemischen Beschichtungsbädern zu Verunreinigungen führen können. Mit einer erfindungsgemäß ausgestalteten Auflösewalze treten diese Probleme nicht auf, so daß bei der erfindungsgemäß ausgestalteten Auflösewalze auch wieder die bekannten Druckgußteile eingesetzt werden können.This is achieved by the features of claim 1 and claim 17. The fact that the opening roller is according to the invention garnished with a clothing wire, which has been coated before garnishing, it is achieved that the opening roller itself no longer needs to be coated. This has the advantage that only the clothing wire itself is exposed to the coating process and the associated stresses, such as temperature influences. The opening roller itself, or if this is designed in several parts, the clothing carrier, therefore, can be made of less expensive materials and less stable materials. This is further supported by the fact that the clothing wire is already preformed before coating, so that no tensions, which are caused by the deformation of the wire, are applied to the opening roller by garnishing the clothing carrier or the opening roller. As a result, deformations of the clothing wearer can not occur even if it is inexpensive, for example, made of plastic or a less solid material or very thin-walled. The inventively designed opening roller also has the advantage that for garnishing the opening roller of the clothing wire practically no longer needs to be deformed, so that it also made of a very hard and may consist brittle steel and also a brittle coating can be used, or no consideration must be taken to the coating thickness. If an inventive already pre-coated, ie provided with a wear protection layer clothing wire for the opening roller, no consideration needs to be taken to see whether the other parts of the opening roller with the coating method or the coating media incompatibilities. The components of the opening roller, which are often produced from die-cast aluminum, are known to have fine pores which, for example, can lead to contamination in chemical coating baths. With an inventively designed opening roller, these problems do not occur, so that in the inventively designed opening roller also the known die-castings can be used again.

Durch das erfndungsgemäße Vorformen des Garniturdrahtes kann dieser vorteilhaft voll durchgehärtet werden, d.h. nicht nur die Zähne, wie bei den bisherigen Garniturdrähten üblich, sondern ebenso der Zahnfuß. Beim Garnieren der Auflösewalze bzw. des Garniturträgers muß dieser nämlich nicht mehr verformt werden, so daß auch ein Garniturdraht mit großer Härte und Sprödigkeit verwendet werden kann. Dies hat den großen Vorteil, daß der bisher im Bereich des Zahnfußes verstärkt aufgetretene Verschleiß der Garnitur stark verringert werden kann. Das Verformen des Garniturdrahtes erfolgt in der Weise, daß der Garniturdraht in der Ebene, in der die Garniturzähne liegen, gebogen wird. Beim Aufbringen des Gamiturdrahtes auf die Auflösewalze wird also der Bereich der Zahnfüße praktisch nicht mehr verformt. Besonders vorteilhaft wird der Garniturdraht so vorgeformt, daß er bereits einen Innendurchmesser besitzt, der gleich oder größer als der Durchmesser seiner zylinderförmigen Aufnahme am Garniturträger ist. Dadurch ist gewährleistet, daß der Garniturdraht leicht auf den Garniturträger aufgezogen werden kann. Vorteilhaft besitzen die einzelnen Windungen des Garniturdrahtes den gleichen Durchmesser. Bei einer anderen vorteilhaften Ausgestaltung wird die Verformung des Gamiturdrahtes auf ein Maß durchgeführt, durch das der Innendurchmesser einer spiralförmigen Windung des Garniturdrahtes kleiner als der Durchmesser der zylinderförmigen Aufnahme am Garniturträger ist. Dadurch wird erreicht, daß das Garnieren der Auflösewalze besonders einfach ist, da insbesondere wenn am Garniturträger eine Nut zum Einlegen des Garniturdrahtes verwendet wird, dieser leicht eingeführt werden kann. Durch den kleineren Durchmesser ist der Garniturdraht bestrebt ohne äußeren Druck sich in die Nut des Garniturträgers hineinzulegen.By preforming the clothing wire according to the invention, it can advantageously be fully through-hardened, i. not only the teeth, as usual with the previous clothing wires, but also the tooth root. When garnishing the opening roller or the clothing carrier this namely no longer be deformed, so that a clothing wire with high hardness and brittleness can be used. This has the great advantage that the previously occurred in the area of the tooth root occurred wear of the set can be greatly reduced. The deformation of the clothing wire takes place in such a way that the clothing wire is bent in the plane in which the clothing teeth lie. When applying the Gamiturdrahtes on the opening roller so the area of the tooth base is practically no longer deformed. Particularly advantageously, the clothing wire is preformed so that it already has an inner diameter which is equal to or greater than the diameter of its cylindrical receptacle on the clothing carrier. This ensures that the clothing wire can be easily mounted on the clothing carrier. Advantageously, the individual turns of the clothing wire have the same diameter. In another advantageous embodiment, the deformation of the Gamiturdrahtes is performed to a degree by which the inner diameter of a spiral turn of the clothing wire is smaller than the diameter of the cylindrical receptacle on the clothing carrier. It is thereby achieved that the garnishing of the opening roller is particularly simple, since, in particular, when a groove for inserting the clothing wire is used on the clothing carrier, it can be easily inserted. Due to the smaller diameter of the clothing wire endeavored without external pressure hineinzlegen into the groove of the clothing wearer.

Als ein besonders günstiges Verhältnis von Innendurchmesser einer Windung des vorgeformten Garniturdrahtes zu Durchmesser seiner zylinderförmigen Aufnahme hat sich ein Wert von kleiner als 1,4 herausgestellt. Durch diesen Wert ist gewährleistet, daß der Garniturdraht praktisch in gewohnter Weise montiert werden kann, da er leicht auf die Auflösewalze aufgezogen werden kann und andererseits bei diesem Aufziehen und Hineinbringen in die Nut der Gamituraufnahme oder auf die Oberfläche der Garnituraufnahme nur eine geringe Verformung erforderlich ist.As a particularly favorable ratio of inner diameter of a turn of the preformed Garniturdrahtes to diameter of its cylindrical receptacle, a value of less than 1.4 has been found. This value ensures that the clothing wire can be mounted practically in the usual way, since it can be easily mounted on the opening roller and on the other hand, only a small deformation is required in this mounting and bringing into the groove of the Gamituraufnahme or on the surface of Garnituraufnahme ,

Ein besonders günstiger Wert des angegebenen Verhältnisses liegt zwischen 1,2 und 0,8, wobei sich als ideal ein Wert zwischen 1,1 und 0,9 herausgestellt hat.A particularly favorable value of the stated ratio is between 1.2 and 0.8, whereby a value between 1.1 and 0.9 has been found to be ideal.

Bei einer weiteren vorteilhaften Weiterbildung der Erfindung wird der Gamiturdraht nicht nur beschichtet bevor er auf den Garniturträger aufgezogen wird, sondern auch noch wärmebehandelt. Dies ermöglicht, daß die Beschichtung vollständig erfolgen kann, so daß wenn der Garniturdraht auf der Auflösewalze aufgezogen wurde, diese keiner weiteren Bearbeitungsschritte mehr bedarf. Günstig ist es, wenn der Garniturdraht beim Aufziehen auf die Auflösewalze axial geführt wird, weil dadurch auf Nuten zur Aufnahme der Garnitur verzichtet werden kann. Besonders günstig ist es dabei, wenn der Garniturdraht einen Fuß besitzt, der eine axiale Ausdehnung hat, die größer ist als die axiale Ausdehnung der Zähne, so daß bei einer Verlegung des Garniturdrahtes Fuß an Fuß ohne die Verwendung von Nuten ein perfekter Sitz der Garnitur erreicht werden kann. Durch die vorteilhafte Ausgestaltung der Auflösewalze mit einer Nut zur Aufnahme des Garniturdrahtes wird erreicht, daß ein einfacher Garniturdraht verwendet werden kann und trotzdem der axiale Abstand der einzelnen Windungen des Garniturdrahtes gleichmäßig ist. Vorteilhaft hat die axiale Breite dieser Nut einen Wert der größer ist als die axiale Ausdehnung des Garniturdrahtes, dabei aber gleichzeitig kleiner als die axiale Ausdehnung des Garniturdrahtes plus 0,2 mm. Damit wird genügend Raum geschaffen auch zu gewährleisten, daß die Beschichtung auf dem Gamiturdraht beim Einlegen des Drahtes in die Nut nicht abplatzt. In vorteilhafter Weiterbildung der Erfindung ist vorgesehen, daß der Garniturträger ringförmig ausgebildet ist und dabei eine Wandstärke zwischen 1 mm und 5 mm besitzt. Erfindungsgemäß ist ein Garniturdraht mit Nickel chemisch beschichtet, wobei Hartstoffkörner in die Nickelschicht eingelagert sind. Neben einer guten Verschleißfestigkeit hat die so gestaltete Auflösewalze auch gute Eigenschaften beim Auflösen der Fasern.In a further advantageous embodiment of the invention, the Gamiturdraht is not only coated before it is mounted on the clothing carrier, but also heat treated. This allows the coating to be completed, so that when the clothing wire has been mounted on the opening roller, it requires no further processing steps. It is advantageous if the clothing wire is guided axially when being mounted on the opening roller, because this can be dispensed with grooves for receiving the set. It is particularly advantageous if the clothing wire has a foot which has an axial extent which is greater than the axial extent of the teeth, so that when laying the clothing wire foot to foot without the use of grooves a perfect fit of the set achieved can be. Due to the advantageous embodiment of the opening roller with a groove for receiving the clothing wire is achieved that a simple clothing wire can be used and still the axial distance of the individual turns of the clothing wire is uniform. Advantageously, the axial width of this groove has a value which is greater than the axial extent of the clothing wire, but at the same time smaller than the axial extent of the clothing wire plus 0.2 mm. This will create enough space to ensure that the coating on the Gamiturdraht when inserting the wire into the groove does not flake off. In an advantageous embodiment of the invention, it is provided that the clothing carrier is annular and has a wall thickness between 1 mm and 5 mm. According to the invention, a clothing wire is chemically coated with nickel, hard-material grains being embedded in the nickel layer. In addition to good wear resistance, the opening roller designed in this way also has good properties when dissolving the fibers.

Durch das erfindungsgemäße Verfahren zum Herstellen eines Garniturdrahtes wird erreicht, daß nach dem Beschichten keine solche Verformung des Garniturdrahtes mehr zu seiner Montage erfolgen muß, die die Beschichtung beschädigt. Verschleißfeste Beschichtungen würden nämlich abplatzen oder beschädigt werden, wenn erst nach dem Beschichten der Garnitur Draht in eine spiralförmige Gestalt geformt würde. Durch die mit axialem Abstand zueinander angeordneten Windungen des Garniturdrahtes beim Beschichten wird erreicht, daß die Beschichtung gleichmäßig erfolgt. Da der Garniturdraht als freie Spirale beim Beschichten vor liegt, kann der Garniturdraht gleichmäßig von allen Seiten beschichtet werden. Weitere vorteilhafte Ausgestaltungen der Erfndung sind in den übrigen Unteransprüchen beschrieben.The inventive method for producing a clothing wire is achieved that after coating no such deformation of the clothing wire must be made more to its assembly, which damages the coating. Namely, wear-resistant coatings would flake off or be damaged if wire was formed into a spiral shape only after coating the clothing. Due to the axially spaced turns of the clothing wire during coating it is achieved that the coating is uniform. Since the clothing wire is present as a free spiral when coating, the clothing wire can be uniformly coated from all sides. Further advantageous embodiments of the invention are described in the remaining subclaims.

Im folgenden wird anhand von zeichnerischen Darstellungen die Erfindung beschrieben. Es zeigen:

Figur 1
eine Auflösewalze mit ihrer Lagerung, teilweise im Schnitt;
Figur 2
eine massive Auflösewalze im Schnitt;
Figur 3
eine schematische Darstellung eines erfindungsgemäß spiralförmig vorgeformten Garniturdrahtes.
In the following the invention will be described with reference to drawings. Show it:
FIG. 1
an opening roller with its storage, partly in section;
FIG. 2
a massive opening roller in the section;
FIG. 3
a schematic representation of a spiral preformed garniture wire according to the invention.

Figur 1 zeigt eine Draufsicht, teilweise im Schnitt, auf eine erfindungsgemäße Auflösewalze. Die Auflösewalze 1 besteht aus einem Grundkörper 11, der einen Garniturträger 12 aufnimmt. Der Grundkörper 11 ist mittels einer Preßpassung auf einer Welle 13 montiert, über die die Auflösewalze 1 im Lager 15 gelagert ist. Angetrieben wird die Welle 13 und damit auch die Auflösewalze 1 mittels eines nicht gezeigten Riemens, der mit dem Wirtel 14 der Welle 13 zusammenarbeitet. Grundkörper 11 und Garniturträger 12 sind mittels Schrauben 16 miteinander verbunden. Der Garniturträger 12 besitzt eine Durchbrechung 17, die mit einem Deckel 18 verschlossen ist.FIG. 1 shows a plan view, partly in section, of an opening roller according to the invention. The opening roller 1 consists of a base body 11 which receives a clothing carrier 12. The main body 11 is mounted by means of a press fit on a shaft 13, via which the opening roller 1 is mounted in the bearing 15. The shaft 13 and thus also the opening roller 1 are driven by means of a belt, not shown, which cooperates with the whorl 14 of the shaft 13. Base body 11 and clothing carrier 12 are connected to each other by means of screws 16. The clothing carrier 12 has an opening 17 which is closed by a lid 18.

Der Garniturträger 12 trägt umfangsseitig die Garnitur 2, die mit Zähnen 23 versehen ist. Diese lösen bei Offenend-Spinnvorrichtungen in bekannter Weise ein vorgelegtes Faserband zu einzelnen Fasern auf. Zur Aufnahme der Garnitur 2 besitzt die Auflösewalze 1, hier in Figur 1 also der Garniturträger 12, eine Nut 21, die in der zylinderförmigen Mantelfläche 22 des Garniturträgers 12 eingeformt ist. Die Nut 21 ist spiralförmig um die Mantelfläche 22 geführt und reicht vom Bereich des Bordes 121 des Garniturträgers 12 bis zum Bereich des Bordes 111 des Grundkörpers 11.The clothing carrier 12 circumferentially carries the clothing 2, which is provided with teeth 23. These solve in open-end spinning devices in a known manner a presented sliver to individual fibers. To accommodate the clothing 2 has the opening roller 1, here in Figure 1 so the clothing carrier 12, a groove 21 which is formed in the cylindrical surface 22 of the clothing carrier 12. The groove 21 is guided spirally around the lateral surface 22 and extends from the region of the rim 121 of the clothing carrier 12 to the region of the rim 111 of the main body 11.

Der Garniturdraht 3 ist gemäß der Erfindung spiralförmig vorgeformt und r beschichtet und in diesem vorgeformten Zustand in die Nut 21 der Auflösewalze 1 eingelegt. Der Garniturdraht 3 besitzt Zähne 23, die durch die erfndungsgemäße Ausgestaltung der Auflösewalze besonders verschleißfest ausgebildet sind. Der Grund der Nut 21 bildet die Aufnahme 210 für den Garniturdraht 3, auf der dieser aufliegt. Zur Befestigung des Garniturdrahtes an der Auflösewalze ist dieser vorteilhaft nicht mehr verklemmt oder verstemmt, wie dies bei den Auflösewalzen des Standes der Technik bekannt ist, sondern durch die Ausgestaltung des Durchmessers der Aufnahme 210 in Verbindung mit der Ausgestaltung des Innendurchmessers der Windungen des vorgeformten Garniturdrahtes, wird erreicht, daß der Garniturdraht nach dem Einlegen in die Nut 21 sicher darin verbleibt, ohne daß weitere Befestigungsmaßnahmen vorgenommen werden müssen. Dazu ist der Innendurchmesser des vorgeformten Garniturdrahtes kleiner als der seiner Aufnahme 210. Die axiale Ausdehnung der Nut, d.h. die Breite der Nut 21, braucht in einem derart ausgestalteten Fall (Verhältnis Innendurchmesser vorgefertigter Gamiturdraht zu Aufnahmedurchmesser) keine Klemmwirkung entfalten. In einem Fall, wo der vorgefertigte Gamiturdraht einen größeren Innendurchmesser als der Durchmesser der Aufnahme 210 besitzt, kann es vorteilhaft sein, wenn der Garniturdraht inklusive seiner Beschichtung breiter ist als die Breite der Nut 21. Dadurch kann ein sicheres Befestigen des Garniturdrahtes an der Auflösewalze erreicht werden, ohne daß ein Verstemmen der Enden des Garniturdrahtes an der Auflösewalze, wie dies im Stand der Technik der Fall ist, vorgenommen wird. Selbstverständlich ist es auch möglich, daß ein sicherer Halt des Garniturdrahtes an der Auflösewalze sowohl durch die besondere Ausgestaltung des Innendurchmessers des Gamiturdrahtes erreicht wird und zusätzlich der Garniturdraht inklusive Beschichtung breiter ist als die Breite der Nut 21. Darauf zu achten ist, daß bei der Montage des Garniturdrahtes 3 an der Auflösewalze der Garniturdraht nicht so weit aufgeweitet werden muß, daß dadurch die Beschichtung durch eine zu große Verformung beschädigt oder zerstört wird. Ebenso ist die Breite des Garniturdrahtes im Verhältnis zur Breite der Nut 21 so zu wählen, daß trotz gewünschter Klemmwirkung eine Beschädigung des Garniturdrahtes bzw. dessen Beschichtung beim Einlegen in die Nut 21 vermieden wird. Darüber hinaus ist es aber auch möglich, insbesondere wenn das Verhältnis des Innendurchmessers des Garniturdrahtes zu Durchmesser der Aufnahme 210 größer als 1 ist, daß der Garniturdraht, wie bisher beim Stand der Technik üblich, durch ein Verformen der seitlichen Flanken der Nut 21 an der Auflösewalze festgeklemmt wird.The clothing wire 3 is spirally preformed according to the invention and r coated and inserted in this preformed state in the groove 21 of the opening roller 1. The clothing wire 3 has teeth 23, which are formed by the erfndungsgemäße embodiment of the opening roller particularly wear-resistant. The bottom of the groove 21 forms the receptacle 210 for the clothing wire 3, on which rests this. For attachment of the clothing wire to the opening roller this is advantageous no longer jammed or caulked, as is known in the opening rollers of the prior art, but by the configuration of the diameter of the receptacle 210 in connection with the configuration of the inner diameter of the turns of the preformed clothing wire, It is achieved that the clothing wire safely remains after insertion into the groove 21, without further attachment measures must be made. For this purpose, the inner diameter of the preformed clothing wire is smaller than that of its receptacle 210. The axial extent of the groove, i. the width of the groove 21, in such a case designed (ratio of internal diameter prefabricated Gamiturdraht to take-up diameter) need not develop a clamping action. In a case where the prefabricated clothing wire has a larger inner diameter than the diameter of the receptacle 210, it may be advantageous if the clothing wire including its coating is wider than the width of the groove 21. Thus, a secure fastening of the clothing wire to the opening roller is achieved be made without caulking the ends of the clothing wire on the opening roller, as is the case in the prior art. Of course, it is also possible that a secure hold of the clothing wire is achieved at the opening roller both by the particular configuration of the inner diameter of the Gamiturdrahtes and additionally the clothing wire including coating is wider than the width of the groove 21. It should be noted that during assembly of the clothing wire 3 on the opening roller of the clothing wire does not have to be widened so far that thereby the coating is damaged or destroyed by excessive deformation. Likewise, the width of the clothing wire in relation to the width of the groove 21 is to be selected so that despite desired clamping effect damage to the clothing wire or its coating is avoided when inserted into the groove 21. Moreover, but it is also possible, especially if the ratio of the inner diameter of the clothing wire to diameter of the receptacle 210 is greater than 1, that the clothing wire, as usual in the prior art, by deforming the lateral edges of the groove 21 on the opening roller is clamped.

Figur 2 zeigt eine Schnittdarstellung einer Auflösewalze, die massiv ausgestaltet ist und deren eine Seite mit einem Deckel 4 abgeschlossen ist. Der Deckel 4 enthält, bedingt durch seinen größeren Durchmesser als die Auflösewalze 1 selbst, den Bord 41. Der andere Bord 42 ist einteilig mit der Auflösewalze 1 ausgestaltet. Im Zentrum besitzt die Auflösewalze eine Bohrung 43, mit der sie in ähnlicher Weise, wie die Auflösewalze von Figur 1, auf einer Welle befestigt wird. Der Deckel 4 ist mittels Schrauben 16 an der Auflösewalze 1 festgeschraubt. Zur Aufnahme des Garniturdrahtes 2 bildet die Mantelfläche 22 der Auflösewalze 1 gleichzeitig die Aufnahme 210 für den Garniturdraht 3. Dieser ist also nicht wie bei Figur 1 in einer Nut aufgenommen, sondern er liegt direkt auf der Mantelfläche 22 der Auflösewalze 1 auf. Bei einer derartigen Montage des Garniturdrahtes an der Auflösewalze empfiehlt sich natürlich einen Garniturdraht zu verwenden, dessen Verhältnis vom Innendurchmesser zu Durchmesser der Aufnahme 210 kleiner als 1 ist. D.h. durch den kleineren Durchmesser der Windungen des Garniturdrahtes 3 liegt der Gamiturdraht so mit Spannung auf der Mantelfläche 22, d.h. der Aufnahme 210 der Auflösewalze, auf, daß allein durch diese Spannung eine ausreichende Befestigung des Garniturdrahtes 3 an der Auflösewalze 1 erfolgt. Beim Auflegen, d.h. Montieren des Gamiturdrahtes 3 auf die Auflösewalze 1 wird durch geeignete Maßnahmen dafür gesorgt, daß der Abstand der einzelnen Windungen des Garniturdrahtes 3 zueinander im gewünschten Maß ist. Besonders günstig und gemäß einer weiteren Erfndung kann dabei die Auflösewalze derart ausgestaltet werden, daß im Bereich in der Mitte zwischen den Borden der Garniturdraht mit geringerem Abstand zu seiner Nachbarwindung verlegt wird, als im Bereich der Borde 41 und 42, wo bekanntlich bei der Zuführung eines Faserbandes weniger Fasern zum Auskämmen der Auflösewalze vorgelegt werden. Die in Figur 2 dargestellte in axialer Richtung mit geringerem Abstand zur Nachbarwindung angeordnete Garnierung der Auflösewalze ist als solche besonders vorteilhaft und nicht daran gebunden, daß die Mantelfläche 22, ohne eine Nut 21 zu besitzen, die Aufnahme 210 für den Garniturdraht 3 bildet. Es ist nur besonders einfach ausführbar, bei einer Auflösewalze gemäß Figur 2.Figure 2 shows a sectional view of an opening roller, which is designed solid and whose one side is closed with a cover 4. The cover 4 contains, due to its larger diameter than the opening roller 1 itself, the board 41. The other board 42 is designed in one piece with the opening roller 1. At the center, the opening roller has a bore 43, with which it is fastened on a shaft in a manner similar to that of the opening roller of FIG. The lid 4 is screwed by means of screws 16 to the opening roller 1. For receiving the clothing wire 2, the lateral surface 22 of the opening roller 1 simultaneously forms the receptacle 210 for the clothing wire 3. So this is not recorded as in Figure 1 in a groove, but it is directly on the lateral surface 22 of the opening roller 1 on. In such an assembly of the clothing wire to the opening roller, it is of course advisable to use a clothing wire whose ratio of the inner diameter to diameter of the receptacle 210 is less than 1. In other words, due to the smaller diameter of the turns of the clothing wire 3, the clothing wire is tensioned on the lateral surface 22, ie the receptacle 210 of the opening roller, so that adequate fastening of the clothing wire 3 to the opening roller 1 is effected solely by this tension. When hanging up, ie mounting the Gamiturdrahtes 3 on the opening roller 1 is ensured by appropriate measures that the distance between the individual turns of Garniturdrahtes 3 to each other to the desired extent. Particularly favorable and according to another Erfndung thereby the opening roller can be designed such that in the area between the shelves the clothing wire is moved with a smaller distance to its adjacent turn, as in the region of the shelves 41 and 42, where known in the supply of a Sliver less fibers are presented for combing the opening roller. The garnish of the opening roller arranged in the axial direction at a smaller distance from the adjacent turn as shown in FIG. 2 is particularly advantageous and not bound to the fact that the lateral surface 22, without having a groove 21, forms the receptacle 210 for the clothing wire 3. It is only particularly simple executable, in an opening roller according to Figure 2.

Durch die genügende Spannung des Garniturdrahtes auf der Auflösewalze ist ein sicherer Halt des Garniturdrahtes,auch bei einer Aufnahme 210 ohne Nut, gewährleistet und gleichzeitig die Möglichkeit gegeben, bei ein und derselben Ausgestaltung lediglich durch verschieden Verlegemaßnahmen des Garniturdrahtes auf der Auflösewalze unterschiedliche Abstände der Windungen zueinander auf einfache Weise zu erzeugen. Damit die in Drehrichtung den Anfang des Garniturdrahtes bildende Stirnfläche 20 des Garniturdrahtes 3 keine Störungen bei der Auflösung des Faserbandes erzeugt, kann dieser in Richtung zur Drehachse der Auflösewalze in einem Schlitz 211 der Aufnahme 210 abgesenkt sein. Eine andere Möglichkeit besteht darin, die Stirnfläche 20 des Gamiturdrahtes bis in den Bereich des ihr zugewandten Bordes zu bringen oder im Bord axial zu versenken. Das nachlaufende Ende des Gamiturdrahtes dagegen kann einfach auf der Mantelfläche 22 der Auflösewalze 1 enden, da dies keine Störstelle bildet.Due to the sufficient tension of the clothing wire on the opening roller a secure hold of Garniturdrahtes, even with a recording 210 without groove, while ensuring the possibility, in one and the same configuration only by different laying measures of clothing wire on the opening roller different distances of the turns to each other to generate in a simple way. Thus, in the direction of rotation the beginning of the clothing wire forming end face 20 of the clothing wire 3 does not interfere with the resolution of the sliver, this can be lowered in the direction of the axis of rotation of the opening roller in a slot 211 of the receptacle 210. Another possibility is to bring the end face 20 of the Gamiturdrahtes into the region of the facing her Bordes or to sink axially in the board. The trailing end of the Gamiturdrahtes, however, can easily end on the lateral surface 22 of the opening roller 1, as this forms no impurity.

Dadurch, daß der Deckel 4 von der Auflösewalze 1 entfernt werden kann, kann besonders vorteilhaft der Gamiturdraht, ohne daß er unnötig bei der Montage aufgeweitet werden muß, auf die Aufnahme 210 der Auflösewalze 1 aufgeschoben werden. Dadurch ist es möglich den Garniturdraht mit einem besonders kleinen Innendurchmesser im Verhältnis zum Durchmesser der Aufnahme 210 auszubilden, ohne daß die Beschichtung bei der Montage beschädigt wird. Gleichzeitig bildet ein solches Verhältnis der Durchmesser, z.B. mit dem Wert 1,1 bis 0,9, eine sichere Gewähr dafür, daß der Garniturdraht auf der Auflösewalze einen festen Halt hat und sich bei deren Betrieb nicht mehr verschiebt. Wird eine Auflösewalze verwendet, die z.B. aus dem Vollen gedreht ist und zwei feste Borde besitzt, ist bei der Montage zu berücksichtigen, daß der Garniturdraht über den Außendurchmesser des Bordes hinweggehoben werden muß, und dazu eine größere Aufweitung erforderlich ist. Dies muß in Einklang stehen mit der Verformbarkeit der Beschichtung.Characterized in that the lid 4 can be removed from the opening roller 1, particularly advantageously the Gamiturdraht, without it must be unnecessarily expanded during assembly, are pushed onto the receptacle 210 of the opening roller 1. This makes it possible to form the clothing wire with a particularly small inner diameter in relation to the diameter of the receptacle 210, without the coating is damaged during assembly. At the same time, such a ratio of diameters, e.g. with the value 1.1 to 0.9, a sure guarantee that the clothing wire on the opening roller has a firm hold and no longer shifts in their operation. If an opening roller is used, e.g. is rotated from the solid and has two solid shelves, is to be considered during assembly that the clothing wire must be lifted over the outer diameter of the board, and to a larger expansion is required. This must be consistent with the deformability of the coating.

Im Bereich des Bordes 42 besitzt die Auflösewalze 1 auf ihrer Mantelfläche 22 einen Schlitz 211, in den, wie beschrieben, der Anfang des Garniturdrahtes 3 abgesenkt wird. Damit der Garniturdraht 3 mit seiner Stirnfläche 20 auch tief genug in den Schlitz 211 hineintaucht, kann der Anfang des Gamiturdrahtes nachverformt werden. Ein in diesem Fall auftretendes Beschädigen der Beschichtung ist nicht von so großer Bedeutung, da in diesem Bereich der Garniturdraht nicht mit den Fasern in Berührung kommt. Als zusätzliche Sicherungsmaßnahmen oder zum Verringern der Spalte zwischen Garniturdraht und Aufnahme 210 kann noch z.B. ein Dichtungsmittel oder ein Kleber eingebracht werden. Besonders günstig ist es, wenn der Anfang des Garniturdrahtes sowohl in eine Nut der Auflösewalze abgesenkt ist als auch möglichst nahe an dem ihm zugewandten Bord, hier in Figur 2 der Bord 42, verlegt ist.In the area of the board 42, the opening roller 1 has on its lateral surface 22 a slot 211 into which, as described, the beginning of the clothing wire 3 is lowered. In order for the clothing wire 3 with its end face 20 also to dive deep enough into the slot 211, the beginning of the clothing wire can be deformed. Damage to the coating occurring in this case is not of such great importance, since in this area the clothing wire does not come into contact with the fibers. As additional security measures or to reduce the gap between the clothing wire and receptacle 210, it is still possible to use e.g. a sealant or an adhesive are introduced. It is particularly favorable if the beginning of the clothing wire is lowered both into a groove of the opening roller and as close as possible to the board facing it, here in FIG. 2 the board 42 is laid.

Figur 3 zeigt schematisch eine Darstellung eines nach dem erfindungsgemäßen Verfahren hergestellten Garniturdrahtes 3. Dargestellt sind beispielhaft nur 4 Windungen, wobei eine Auflösewalze des Standes der Technik ca. 8 bis 13 Windungen enthält, je nach Breite von Garnitur und Mantelfläche der Auflösewalze. Der Innendurchmesser D des vorgewickelten Garniturdrahtes bildet dabei das Maß, der für die Montage noch erforderlich elastischen Verformung des Garniturdrahtes.FIG. 3 shows schematically a representation of a clothing wire 3 produced by the method according to the invention. Only 4 turns are shown by way of example, wherein an opening roller of the prior art contains approximately 8 to 13 turns, depending on the width of clothing and lateral surface of the opening roller. The inner diameter D of the pre-wound clothing wire forms the measure that still required for the assembly elastic deformation of the clothing wire.

Der erfindungsgemäß vorgeformte und beschichtete Garniturdraht 3 von Figur 3 kann beim Herstellen mit einer weit höheren Windungszahl gefertigt werden, als zur Garnierung einer einzigen Auflösewalze erforderlich ist. Die Windungszahl ist lediglich begrenzt durch die Handhabbarkeit des vorgefertigten Garniturdrahtes. Figur 3 zeigt einen Garniturdraht 3, der sowohl beim Vorformen radial, d.h. spiralförmig vorgefertigt wurde als auch in axialer Richtung gereckt wurde, so daß der Garniturdraht praktisch schon auch in axialer Richtung der Nut 21 der Auflösewalze (vergleiche Figur 1) angepaßt ist. Dies ist aber nicht in jedem Fall erforderlich, da ein Verbiegen des Garniturdrahtes 3 in axialer Richtung beim Garnieren der Auflösewalze nur einen sehr geringen Verformungsgrad bedeutet, der auf die Beschichtung praktisch keinen Einfluß hat. Wenn die einzelnen Windungen in axialer Richtung nach dem radialen Verformen aneinander anliegen, muß nötigenfalls im Beschichtungsbad durch Bewegen des Garniturdrahtes dafür gesorgt werden, daß das Beschichtungsbad den Garniturdraht allseitig umströmen kann. Bei den bekannten Beschichtungsverfahren mit einer Nickelbeschichtung, die aus einem chemischen Beschichtungsbad abgeschieden wird, sind ansonsten keine besonderen Maßnahmen erforderlich. Auch ist es möglich jetzt nach dem Vorformen des Garniturdrahtes nochmals einen Härteprozess vor oder nach dem Beschichten einzufügen. Dies ist vorteilhaft möglich, da für die Montage der Garnitur diese nur noch sehr gering verformt werden muß, so daß auch z.B. durchgehärtete Garniturdrähte für die erfindungsgemäße Auflösewalze Verwendung finden können. Das erfindungsgemäße Verfahren ist dabei unabhängig vom Werkstoff des Garniturdrahtes und ermöglicht den Einsatz bisher nicht verwendbarer Materialien für die Auflösewalze selbst.The preformed and coated clothing wire 3 according to the invention of FIG. 3 can be manufactured with a much higher number of turns during manufacture than is required for garnishing a single opening roller. The number of turns is limited only by the handling of the prefabricated clothing wire. FIG. 3 shows a clothing wire 3 which was preformed radially, ie helically, during preforming and was also stretched in the axial direction, so that the clothing wire is practically already adapted in the axial direction of the groove 21 of the opening roller (cf. FIG. 1). However, this is not necessary in every case, since bending the clothing wire 3 in the axial direction when garnishing the opening roller means only a very small degree of deformation, which has virtually no influence on the coating. If the individual windings abut each other in the axial direction after the radial deformation, it must be ensured, if necessary in the coating bath by moving the clothing wire that the coating bath The clothing wire can flow around on all sides. In the known coating methods with a nickel coating, which is deposited from a chemical coating, otherwise no special measures are required. It is also possible now after preforming the clothing wire again insert a hardening process before or after coating. This is advantageously possible, as for the assembly of the clothing this must be deformed only very slightly, so that, for example, through-hardened clothing wires can be used for the opening roller according to the invention. The inventive method is independent of the material of the clothing wire and allows the use of previously unusable materials for the opening roller itself.

Claims (19)

  1. An opening roller for separating fibres on an open-end spinning machine, with a cylindrical clothing carrier which on its outer surface carries a card clothing comprising a pre-shaped clothing wire, which is pre-shaped in such a way that it is bent into a spiral shape in the plane in which the teeth (23) of the clothing wire (3) are situated, before it is placed on the clothing carrier (12), characterized in that the clothing wire (3) is coated evenly from all sides as a free spiral and the coating is a layer of nickel which is applied chemically and into which grains of hard material are introduced.
  2. An opening roller according to Claim 1, characterized in that the diameter of a spiral coil of the clothing wire (3) has an internal diameter which is greater than or equal to the diameter of its receiving means (210) on the clothing carrier (12).
  3. An opening roller according to one or more of Claims 1 to 2, characterized in that the internal diameter of a spiral coil of the clothing wire (3) is smaller than the diameter of the receiving means (210) on the clothing carrier (12).
  4. An opening roller according to one or more of Claims 1 to 3, characterized in that the ratio of the internal diameter of the clothing wire (3) to the diameter of its receiving means (210) is less than 1.4.
  5. An opening roller according to one or more of Claims 1 to 4, characterized in that the ratio of the internal diameter of the clothing wire (3) to the diameter of its receiving means (210) is between 1.2 and 0.8.
  6. An opening roller according to one or more of Claims 1 to 5, characterized in that the ratio of the internal diameter of the clothing wire (3) to the diameter of its receiving means (210) is between 1.1 and 0.9.
  7. An opening roller according to one or more of Claims 1 to 6, characterized in that the clothing wire (3) is heat-treated after the coating and before it is placed on the clothing carrier (12).
  8. An opening roller according to one or more of Claims 1 to 7, characterized in that the clothing wire (3), guided in the axial direction, is placed on the outer surface of the clothing carrier (12).
  9. An opening roller according to one or more of Claims 1 to 8, characterized in that the clothing wire (3) has a base which extends as viewed in the axial direction of the opening roller and essentially determines the axial distance of the clothing teeth (23) from one another.
  10. An opening roller according to one or more of Claims 1 to 9, characterized in that on its outer surface (22) the clothing carrier (12) has a groove (21) into which the clothing wire (3) is inserted.
  11. An opening roller according to Claim 10, characterized in that the groove (21) has an axial width which is greater than the axial extension of the clothing wire (3) and which is smaller than the axial extension of the clothing wire plus 0.2 mm.
  12. An opening roller according to one or more of Claims 1 to 11, characterized in that the clothing carrier (12) is made annular and has a wall thickness of between 1 mm and 5 mm.
  13. An opening roller according to Claim 12, characterized in that the annular clothing carrier (12) is a steel ring.
  14. An opening roller according to Claim 13, characterized in that the annular clothing carrier (12) consists of a light-metal alloy.
  15. An opening roller according to one or more of Claims 1 to 14, characterized in that the clothing carrier (12) is an extruded section.
  16. An opening roller according to one or more of Claims 1 to 15, characterized in that the clothing carrier (12) has a rim (42) which adjoins the clothing in the axial direction.
  17. A method of producing a clothing wire pre-shaped into a spiral, in particular for an opening roller according to one or more of Claims 1 to 16, wherein after the teeth have been formed the clothing wire is deformed into a spiral shape in the plane in which the teeth are situated, and the wire with coils arranged spaced from one another is subjected as a free spiral to a chemical coating procedure, coating the clothing wire evenly from all sides, applying a nickel layer, into which grains of hard material are inserted, and subsequently the wire is wound onto an opening roller.
  18. A method according to Claim 17, characterized in that the clothing wire is hardened before it is deformed.
  19. A method according to Claim 17 or 18, characterized in that the clothing wire is subjected to a heat treatment after the coating.
EP98101428A 1997-02-28 1998-01-28 Opening roller for an open-end spinning machine Expired - Lifetime EP0861930B2 (en)

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EP02012599A EP1249525B1 (en) 1997-02-28 1998-01-28 Mounting of an opening roller for an open-end spinning machine

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DE19708190 1997-02-28
DE19708190A DE19708190A1 (en) 1997-02-28 1997-02-28 Release roller for an open-end spinning machine

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EP02012599.3 Division-Into 2002-06-06

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EP (2) EP0861930B2 (en)
CZ (1) CZ293720B6 (en)
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DE10106673A1 (en) 2001-02-14 2002-08-29 Rieter Ingolstadt Spinnerei A method for producing an opening roller of an open-end spinning device and an opening roller produced using such a method
DE10132867A1 (en) * 2001-07-06 2003-01-23 Rieter Ingolstadt Spinnerei opening roller
DE10150431A1 (en) * 2001-10-11 2003-04-17 Rieter Ingolstadt Spinnerei Sliver loosening roller, to break it down into separate fibers for an open-end spinner, has a clothing wire with a coating of diamond grains in a thinner layer at the tooth feet
DE10329888B4 (en) * 2002-11-28 2011-12-15 Oerlikon Textile Gmbh & Co. Kg Method and device for producing a clothing wire for an opening roller
DE10260507A1 (en) * 2002-12-21 2004-07-01 Rieter Ingolstadt Spinnereimaschinenbau Ag Separation roller parting fibrous bands into individual fibers on open-ended spinning machine, includes profile holder blocking entry to shaft bearing
DE502005011110D1 (en) 2004-06-18 2011-04-28 Rieter Ingolstadt Gmbh Opening device for spinning machines
DE102004029659B4 (en) 2004-06-18 2017-03-30 Rieter Ingolstadt Gmbh Opening device for spinning machines
WO2006128744A1 (en) * 2005-05-30 2006-12-07 Nv Bekaert Sa Card clothing wire with a coating having a high hardness
DE102007037229A1 (en) * 2007-08-07 2009-02-12 Rieter Ingolstadt Gmbh Opening roller with clip connection
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EP1249525B1 (en) 2004-03-31
EP1249525A3 (en) 2002-11-27
EP0861930A3 (en) 1999-04-14
EP0861930A2 (en) 1998-09-02
US6006511A (en) 1999-12-28
EP1249525A2 (en) 2002-10-16
DE59806482D1 (en) 2003-01-16
CZ54698A3 (en) 1998-09-16
EP0861930B1 (en) 2002-12-04
SK24698A3 (en) 1998-11-04
TW430702B (en) 2001-04-21
CZ293720B6 (en) 2004-07-14
DE59811123D1 (en) 2004-05-06
DE19708190A1 (en) 1998-09-03

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