EP2682509B1 - Stretching unit for a spinning machine - Google Patents
Stretching unit for a spinning machine Download PDFInfo
- Publication number
- EP2682509B1 EP2682509B1 EP13003034.9A EP13003034A EP2682509B1 EP 2682509 B1 EP2682509 B1 EP 2682509B1 EP 13003034 A EP13003034 A EP 13003034A EP 2682509 B1 EP2682509 B1 EP 2682509B1
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- EP
- European Patent Office
- Prior art keywords
- drafting system
- drafting
- rollers
- top rollers
- roller pair
- 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.)
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/22—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by rollers only
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/70—Constructional features of drafting elements
- D01H5/72—Fibre-condensing guides
Definitions
- the invention relates to a drafting system for a spinning machine according to the preamble of claim 1.
- Draw frames in various embodiments are known in connection with spinning machines, for example ring spinning machines, and are described in detail in numerous patent applications.
- Such drafting systems differ, for example, in terms of the number of pairs of rollers and / or in relation to the structural design of the pendulum carrier, which receive the top rollers. Also with regard to the exact training or the equipment of the different pairs of rollers considerable differences are sometimes known.
- the lower rollers are formed as machine-length components, which are composed of a plurality of roller segments.
- These machine-length lower rollers are usually driven by a strong, machine end side arranged in a drive frame of the textile machine drafting motor, which ensures via an intermediate reduction gear that rotate the input, the center and output lower rollers at different speeds and thereby distort the submitted fiber material properly ,
- the middle roller pair is equipped with so-called drafting straps. That is, in these modern drafting systems, both the Mittelobenrwalze, as well as the middle lower roller each have such Verzugsriemchen that secures the sliver to be forgiven in the region of the so-called main drafting zone.
- a modern Riemchenstrecktechnik in particular for warping of fire-retardant and heat-resistant yarn is for example in the US 7, 937, 924 B2 described.
- the input sub-roller is mounted on a carriage which is defined slidably mounted on a punch so that the default range of the so-called default zone is adjustable.
- both the middle lower roller, and the middle upper roller are stored, both the middle lower roller, and the middle upper roller, as usual in Riemchenstrecktechniken, each equipped with a delay straps.
- the CH 256210 A discloses a drafting device for processing filaments.
- the drafting system is divided into two independently working partial drafting systems.
- the first part drafting system is designed as a draft-drafting system. Downstream of the tensile drafting system is arranged a draft drafting system.
- the drafting drafting equipment has a delay apron in a known manner. Between the two partial drafting a condenser is arranged.
- the invention has for its object to provide a drafting system for a ring spinning machine, which is designed so that an existing filament template material can be processed reliably and quickly. That is, on the drafting system according to the invention, for example, fire-retardant and heat-resistant filaments are to be processed so that they can be spun on a downstream ring spinning device to a fiber material, from which later garments can be made, which have a comfortable wearing behavior.
- a compacting device In the conveying direction behind the pair of output rollers, a compacting device is further installed, which then ensures bundling of the resulting through the tearing open filament strand and thus ensures that this filament strand are spun by the spindle of a workstation of a spinning machine, preferably by a ring spinning spindle to a yarn can be further processed in subsequent work steps.
- a device for discharging electrostatic charges is connected to the drafting system (Anspr.2).
- the use of such a device can be prevented, especially during inventive processing of synthetic filaments, which are known to have only a low electrical conductivity, as a rule, that electrostatic charging occurs during operation of the drafting system.
- the top rollers are each provided with a cover having a hardness of 60 to 90 Shore, that is, 60 to 70 Shore for the top rollers and 80 to 90 Shore for the input and middle top rollers.
- a cover having a hardness of 60 to 90 Shore allows the use of pendulum carriers, which allow a high loading force of the top rollers. That is, it can be used a pendulum carrier in which a high clamping force is adjustable between the top rollers and the associated corrugated bottom rollers.
- the loading force of the input and center rollers is greater than 25 daN.
- the top rollers have a diameter of 40-60 mm and the bottom rollers have a diameter of 30-40 mm.
- the top rollers have a diameter of 40-60 mm and the bottom rollers have a diameter of 30-40 mm.
- the top rollers each mounted in a pendulum carrier preferably have a diameter of 50 mm, which has also proved to be very advantageous in combination with the above-described, structured bottom rollers with a diameter of 38 mm.
- the drafting device on a compression device which is connected to a vacuum source.
- the compacting device ensures that the separated filament strand is bundled in the region of a so-called compaction zone to form a structure, which can then be spun onto a thread on a ring spinning spindle.
- a circumferential perforated belt is used.
- This perforated belt comprises, for example, a driven lower roller and a guide housing, which is connected via a pneumatic line to the vacuum source.
- Such trained and working compression devices are not fundamentally new in connection with ring spinning machine drafting systems, but work very reliably and are also very advantageous for the purpose of the invention. That is, in a compacting device, as used in the drafting device according to the invention, a separate filament strand leaving the pair of outfeed rollers is still in a non-rotated state, that is, with filamentary pieces substantially parallel to each other, pneumatically in a so-called compression zone by a vacuum-pressurized transport - And compacting contacted.
- the pending in this transport and compression means Saugluftströmung ensures that the filament pieces are positioned in the transport direction and thus bundled and compacted into a fiber structure.
- the compacting device as described in claim 10 may also have a circumferential perforated hollow roller connected to a vacuum source.
- a compression device By such a compression device, the filament pieces can be positioned in the transport direction and thus bundled and compacted into a fiber structure.
- the pair of input rollers and the middle roller pair form a so-called Vorverzugsfeld in which takes place a 1.8 to 2.5facher Vorverzug the filaments. That is, the default value of the default is increased compared to the usual Langstapeln Vorverzugswert, resulting in a better distortion distribution between main and Vorverzugsfeld.
- Such a design has the particular advantage that the forces to be expended are placed more on the preliminary delay and thus the main delay is relieved.
- the Fig.1 schematically shows a half-side cross-section of a ring spinning machine whose unillustrated side is mirror-inverted.
- the ring spinning machine 1 on a pedestal 2, from which vertical uprights 3 extend upward, which carry suction ducts 4, which are preferably rectangular in cross-section.
- the stanchions 3 also bridge pieces 5 are fixed, which in turn support two extending in the machine longitudinal direction, parallel support tubes 6, where the bearing housing 7 are fixed for a variety of ring spindles.
- Fig.1 is shown schematically one of these ring spinning spindle, which is equipped with a spinning cop 8 during the spinning operation.
- punches 9 which are each part of a drafting system 10 according to the invention.
- the punches 9 are also attached to two extending in the machine longitudinal support tubes 11.
- the ring spinning machine 1 further has vertically arranged support columns 13 for an original material gate 14.
- a part of the movement mechanism 25 of the ring spinning machine 1 is also installed laterally. That is, in this area, the lifting devices for the ring rail 18, the balloon constriction rings 19 and the vertically displaceably mounted thread guide 20 are arranged.
- a bobbin changing device 33 On a boom 32 of the pedestal 2 of the ring spinning machine 1, a bobbin changing device 33 is further arranged, which consists essentially of a plurality of shear systems with scissor arms 34 and 35, a gripper bar 36 and arranged on the gripper bar 36 tube grippers 37.
- the scissors systems are actuated by means of a push / pull tube 38 which extends along the ring spinning machine 1.
- the Fig.2 shows a first advantageous embodiment of a drafting system 10 according to the invention in detail.
- Such drafting units 10 have, as is known, inter alia machine-length, drivable lower rollers 21 u, 22u and 23u and upper rollers 210, 220 and 230, the rest during the spinning operation on the lower rollers 21 u, 22u and 23u and friction of these get picked up.
- the machine-length, drivable lower rollers 21u, 22u and 23u are mounted on slides 41 on punches 9 wherein the installation position of the lower roller 21u, 22u and 23u, that is, the distance of the carriage 41 to each other, by means of corresponding bolts 42 or the like.
- the machine-length lower rollers 21 u, 22u and 23u are generally each composed of a plurality of roller segment pieces with a diameter of between 30 and 40 mm, wherein the roller segment pieces are provided with a structuring 40 in the region of their working surfaces.
- such lower rollers 21 u, 22u and 23u are also, for example via a (not shown) reduction gear, connected to a machine end side arranged electromotive drive, that the speed of the lower rollers 21u, 22u and 23u can be predetermined. That is, by the rotation speed of the lower rollers 21u, 22u, and 23u, both the warp value in a pre-drafting field 43 lying between the pair of input rollers 21 and the center roller pair 22, and the warp value in a main drafting field 44 are disposed between the intermediate roller pair 22 and the pair of output rollers 23 defined adjustable.
- a support 45 of the drafting system 10 is fixed to the punch 9 via a support rod 16, wherein on the support 45 via a rotation axis 46 each have a pendulum carrier 12 and a loading arm 17 of the drafting system 10 are stored.
- the pendulum carrier 12 is limited movable attached to the axis of rotation 46 and can by means of the load arm 17 in three possible positions a) "loaded", b) “relieved” and c) "folded” positioned.
- pendulum carrier 12 On pendulum carrier 12 are also, as known, mounted on corresponding (not shown) retaining elements in a paired arrangement, the top rollers 210, 220 and 230 of the drafting system 10.
- the loading force that is, the force with which the upper rollers 21 o to 230 rest on their associated lower rollers 21u to 23u, by the construction of the pendulum carrier 12 (spring-loaded instead of pneumatically tensioned top rollers) and the adjustable pressure force of the top rollers can be predetermined and is for the output top rollers of the pendulum carrier 12 are greater than 35 daN and set to 25 daN for the input and middle top rollers 210 and 220
- the top rollers 210, 220 and 230 preferably each have a diameter between 40 and 60 mm and are provided with a relatively abrasion resistant cover 30, the hardness of which is between 60 to 70 shore for the top rollers and 80 to 90 shore for the top and middle rollers ,
- the drafting arrangement 10 also has a compacting device 28 for bundling separated and drawn filaments 27 and a device 29 for discharging the entire electrostatic charges resulting from the stretching process of the filaments 27.
- the means 29 for discharging electrostatic charges for example, connected to one of the punches 9 of the drafting system 10 and grounded Such means for discharging electrostatic charges are not fundamentally new in connection with textile machines and, for example in the DE 1 229 426 C described in detail using a route.
- compacting devices are basically known in connection with drafting systems of textile machines and described in detail in numerous patent applications in various embodiments.
- a mechanical compression device for a drafting system is shown while in the DE 199 32 099 A1 a compression device is described, which has a negative pressure, reversing roller as the compression element.
- a compacting device is described, in which a perforated belt is pulled around a driven roller and a guide housing, which in turn is connected to a vacuum source both in the compression device according to DE 199 32 099 A1 as well as in the compression device according to DE 100 08 610 A1 the compaction of the warped fiber strand occurs pneumatically.
- a compression device 28 is installed, which is connected via a pneumatic line 50 to a vacuum source 52 and forms a compression zone 39, in the region of the separate filament strand 27 is pneumatically bundled.
- the punch 9 is provided with a bearing means 47 for a carriage 41, in which a preferably machine-length, machine-end driven Compaction lower roller 48 is mounted, which drives a compression upper roller 49 frictionally via a rotatably mounted intermediate roller 48a and a drivable, perforated belt 51
- the perforated belt 51 in this case comprises a guide housing 60 installed in the region of the bearing device 47, which is connected via a pneumatic line 50 to a vacuum source 52.
- an airflow 53 entering the vacuum-pressurized guide housing 60 via the circumferential, perforated belt 51 ensures that the separated filament pieces 27 are bundled substantially parallel in the region of the compression zone 39, so that they are arranged by means of a subsequently arranged Ring spinning spindle to a thread 26 are spinnable.
- the drafting system 10 may also have some mechanical guiding and compacting devices.
- the drafting system 10 may, for example, a so-called input compressor 56, an apron compressor 57 and a main field compressor 58, wherein in the region of the main drafting zone 44 also a guide rail 55 may be installed, which is so spaced from the pair of output rollers 23 that fibers in the cleaning process by a Wanderbläser Do not be jammed here and lead to thread breaks.
- a compression device 28 is installed following the pair of output rollers 23 having a under horrbeetzbare rotatably mounted compression top roller 59 and the compression-Oberwatze 59 is connected via a Pneurhatiktechnisch 50 to a vacuum source 52 and processed during the spinning operation the separated (not shown here) filament strand 27 pneumatically.
- the punch 9 is equipped with a bearing device 47 in which a preferably machine-length, machine-end-driven compression bottom roller 48 is mounted, on which the compacting upper roller 59 druckallonsaufschlagbarbar.
- the compression top roller 59 is mounted for example on the pendulum carrier 12 and connected via a pneumatic line 50 to a vacuum source 52.
- the compaction top roller 59 is equipped with a perforation 31, which ensures that the separated filament pieces 27 are bundled in parallel, so that they can be spun on a subsequently arranged ring spinning spindle to form a thread.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Preliminary Treatment Of Fibers (AREA)
Description
Die Erfindung betrifft ein Streckwerk für eine Spinnmaschine gemäß dem Oberbegriff des Anspruches 1.The invention relates to a drafting system for a spinning machine according to the preamble of claim 1.
Im Zusammenhang mit Spinnmaschinen, beispielsweise Ringspinnmaschinen, sind Streckwerke in verschiedenen Ausführungsformen bekannt und in zahlreichen Patent-anmeldungen ausführlich beschrieben. Solche Streckwerke unterscheiden sich zum Beispiel hinsichtlich der Anzahl ihrer Walzenpaare und/oder in Bezug auf die konstruktive Ausgestaltung der Pendelträger, die die Oberwalzen aufnehmen. Auch bezüglich der genauen Ausbildung oder der Ausrüstung der verschiedenen Walzenpaare sind zum Teil erhebliche Unterschiede bekannt.Draw frames in various embodiments are known in connection with spinning machines, for example ring spinning machines, and are described in detail in numerous patent applications. Such drafting systems differ, for example, in terms of the number of pairs of rollers and / or in relation to the structural design of the pendulum carrier, which receive the top rollers. Also with regard to the exact training or the equipment of the different pairs of rollers considerable differences are sometimes known.
Im Zusammenhang mit Ringspinnmaschinen sind beispielsweise Streckwerke weit ver breitet, bei denen die Unterwalzen als maschinenlange Bauteile ausgebildet sind, die aus einer Vielzahl von Walzensegmenten zusammengesetzt sind.
Diese maschinenlangen Unterwalzen werden in der Regel durch einen starken, maschinenendseitig in einem Antriebsgestell der Textilmaschine angeordneten Streckwerksmotor angetrieben, der über ein zwischengeschaltetes Untersetzungsgetriebe dafür sorgt, dass die Eingangs-, die Mittel- und Ausgangsunterwalzen mit unterschiedlichen Drehzahlen rotieren und dabei das vorgelegte Fasermaterial ordnungsgemäß verziehen.In connection with ring spinning machines, for example drafting systems are widely ver spreads, in which the lower rollers are formed as machine-length components, which are composed of a plurality of roller segments.
These machine-length lower rollers are usually driven by a strong, machine end side arranged in a drive frame of the textile machine drafting motor, which ensures via an intermediate reduction gear that rotate the input, the center and output lower rollers at different speeds and thereby distort the submitted fiber material properly ,
Bei leistungsstarken Streckwerken, wie sie an modernen Ringspinnmaschinen zum Einsatz kommen, ist das Mittelwalzenpaar mit so genannten Verzugsriemchen ausgestattet. Das heißt, bei diesen modernen Streckwerken weist sowohl die Mittelobenrwalze, als auch die Mittelunterwalze jeweils ein solches Verzugsriemchen auf, das das zu verziehende Faserband im Bereich des so genannten Hauptverzugsfeldes sichert.In high-performance drafting systems, such as those used on modern ring spinning machines, the middle roller pair is equipped with so-called drafting straps. That is, in these modern drafting systems, both the Mittelobenrwalze, as well as the middle lower roller each have such Verzugsriemchen that secures the sliver to be forgiven in the region of the so-called main drafting zone.
Ein modernes Riemchenstreckwerk, insbesondere zum Verziehen von feuerhemmendem und hitzebeständigem Garn ist beispielsweise in der
Bei diesem bekannten Riemchenstreckwerk ist die Eingangsunterwalze auf einem Schlitten gelagert, der definiert verschiebbar auf einer Stanze so angeordnet ist, dass die Verzugsweite des so genannten Vorverzugsfeldes einstellbar ist.
In entsprechenden Lagereinrichtungen der Stanze sind auch die Mittelunterwalze und die Ausgangsunterwalze des Streckwerks gelagert, wobei sowohl die Mittelunterwalze, als auch die Mitteloberwalze, wie bei Riemchenstreckwerken üblich, jeweils mit einem Verzugsriemchen ausgestattet sind.A modern Riemchenstreckwerk, in particular for warping of fire-retardant and heat-resistant yarn is for example in the
In this known Riemchenstreckwerk the input sub-roller is mounted on a carriage which is defined slidably mounted on a punch so that the default range of the so-called default zone is adjustable.
In corresponding storage facilities of the punch and the center lower roller and the lower roller output of the drafting system are stored, both the middle lower roller, and the middle upper roller, as usual in Riemchenstreckwerken, each equipped with a delay straps.
Die
Des Weiteren sind seit langem, zum Beispiel durch die
Diese Streckwerke kommen allerdings nicht bei Spinnmaschinen, sondern nur bei Textilmaschinen zum Einsatz, die mit einem relativ geringen Faserbandverzug arbeiten, beispielweise bei Strecken oder bei Flyern.Furthermore, for a long time, for example by the
However, these drafting systems are not used in spinning machines, but only in textile machines that work with a relatively low sliver distortion, for example, on routes or flyers.
Ausgehend von vorstehend beschriebenen Streckwerken liegt der Erfindung die Aufgabe zugrunde, ein Streckwerk für eine Ringspinnmaschine zu schaffen, das so ausgebildet ist, dass ein aus Filamenten bestehendes Vorlagematerial zuverlässig und schnell verarbeitet werden kann. Das heißt, auf dem erfindungsgemäßen Streckwerk sollen beispielsweise feuerhemmende und hitzebeständige Filamente so bearbeitet werden können, dass sie auf einer nachgeschalteten Ringspinnvorrichtung zu einem Fasermaterial gesponnen werden können, aus dem später Kleidungsstücke gefertigt werden können, die ein angenehmes Tragverhalten aufweisen.Starting from drafting units described above, the invention has for its object to provide a drafting system for a ring spinning machine, which is designed so that an existing filament template material can be processed reliably and quickly. That is, on the drafting system according to the invention, for example, fire-retardant and heat-resistant filaments are to be processed so that they can be spun on a downstream ring spinning device to a fiber material, from which later garments can be made, which have a comfortable wearing behavior.
Diese Aufgabe wird erfindungsgemäß durch ein Streckwerk gelöst, das die im Anspruch 1 beschriebenen Merkmale aufweist.This object is achieved by a drafting system having the features described in claim 1.
Vorteilhafte Ausführungsformen der Erfindung sind Gegenstand der Unteransprüche.Advantageous embodiments of the invention are the subject of the dependent claims.
Das erfindungsgemäße Streckwerk, bei dem die Oberflächen aller Walzenpaare ohne Zwischenschaltung von Riemchen jeweils untereinander in Kontakt stehen, um dieThe drafting device according to the invention, in which the surfaces of all pairs of rollers are in contact with each other without the interposition of straps to the
Filamente klemmend zu führen, dabei über die unterschiedlichen Umlaufgeschwindigkeiten zu zerreißen und als Stapelfasern zu verziehen, hat insbesondere den Vorteil, dass durch den Verzicht auf Verzugsriemchen zuverlässig verhindert wird, dass die Filamente nach dem Zerreißen Wickel bilden können, die einen weiteren, sachgerechten Betrieb des Streckwerks unmöglich machen würden.To lead filaments by clamping, thereby ripping over the different speeds of rotation and forgiving as staple fibers, has the particular advantage that is reliably prevented by dispensing Verzugsriemchen that the filaments can form after breaking wraps, a further, proper operation of the Drafting would make impossible.
Durch die Lagerung der Oberwalzen in einem Pendelträger, bei dem die Belastungskraft der Ausgangsoberwalzen größer als 35 daN eingestellt ist, wird außerdem gewährleistet, dass die Filamente zwischen der Ausgangsober- und Unterwalze mit einer so hohen Klemmkraft beaufschlagt werden, dass sie insbesondere zwischen aufeinanderfolgenden Mittel- und Ausgangswalzenpaaren, die mit unterschiedlichen Rotationsgeschwindigkeiten umlaufen, zerrissen werden. Das heißt, das Ausgangswalzenpaar, das mit einer höheren Rotationsgeschwindigkeit umläuft als das davor angeordnete Mittelwalzenpaar, sorgt dafür, dass die Filamente zwischen diesen Walzenpaaren, die ein so genanntes Hauptverzugsfeld bilden, zuverlässig getrennt werden. Für die Eingangs- und Mitteloberwalzen genügt hingegen eine Belastungskraft größer 25 daN.By supporting the upper rollers in a pendulum carrier in which the loading force of the output top rollers is set greater than 35 daN, it is also ensured that the filaments between the top and bottom roller are subjected to such a high clamping force that they are in particular between successive middle and output roller pairs circulating at different rotational speeds are torn. That is, the pair of outfeed rollers revolving at a higher rotational speed than the intermediate roller pair arranged in front of them ensures that the filaments between these pairs of rollers, which form a so-called main drafting zone, are reliably separated. For the input and middle top rollers, however, a loading force of more than 25 daN is sufficient.
In Förderrichtung hinter dem Ausgangswalzenpaar ist des Weiteren eine Verdichtungseinrichtung installiert, die anschließend für eine Bündelung des durch das Zerreißen entstandenen offenen Filamentstranges sorgt und damit gewährleistet, dass dieser Filamentstrang durch die Spindel einer Arbeitsstelle einer Spinnmaschine, vorzugsweise durch eine Ringspinnspindel, zu einem Garn gesponnen werden kann, das in nachfolgenden Arbeitsschritten weiter verarbeitbar ist.In the conveying direction behind the pair of output rollers, a compacting device is further installed, which then ensures bundling of the resulting through the tearing open filament strand and thus ensures that this filament strand are spun by the spindle of a workstation of a spinning machine, preferably by a ring spinning spindle to a yarn can be further processed in subsequent work steps.
In vorteilhafter Ausführungsform ist außerdem vorgesehen, dass an das Streckwerk eine Einrichtung zum Abführen elektrostatischer Aufladungen angeschlossen ist (Anspr.2).
Durch den Einsatz einer solchen Einrichtung kann speziell bei erfindungsgemäßer Verarbeitung synthetischer Filamente, die bekanntlich in der Regel nur eine geringe elektrische Leitfähigkeit aufweisen, verhindert werden, dass es während des Betriebs des Streckwerkes zum Entstehen elektrostatischer Aufladungen kommt.In an advantageous embodiment it is also provided that a device for discharging electrostatic charges is connected to the drafting system (Anspr.2).
The use of such a device can be prevented, especially during inventive processing of synthetic filaments, which are known to have only a low electrical conductivity, as a rule, that electrostatic charging occurs during operation of the drafting system.
Solche elektrostatische Aufladungen behindern nämlich nicht nur die Herstellung eines ordnungsgemäßen Garns erheblich, sondern stellen, insbesondere wenn es zu einer schlagartigen Entladung kommt, auch eine Gefahr für das Bedienpersonal dar.Namely, such electrostatic charges not only hinder the production of a proper yarn considerably, but also pose a danger to the operating personnel, especially when it comes to a sudden discharge.
Wie in den Ansprüchen 3 und 4 des Weiteren beschrieben, ist in vorteilhafter Ausführungsform vorgesehen, dass die Oberwalzen jeweils mit einem Bezug ausgerüstet sind, der eine Härte von 60 bis 90 Shore, das heißt, 60 bis 70 Shore für die Ausgangsoberwalzen und 80 bis 90 Shore für die Eingangs- und Mitteloberwalzen aufweist. Eine solche Ausbildung der Bezüge der Oberwalzen ermöglicht den Einsatz von Pendelträgern, die eine hohe Belastungskraft der Oberwalzen gestatten. Das heißt, es kann ein Pendelträger eingesetzt werden, bei dem zwischen den Oberwalzen und den zugehörigen geriffelten Unterwalzen eine hohe Klemmkraft einstellbar ist. Durch den Einsatz derartiger Bezüge auf den Oberwalzen kann zuverlässig vermieden werden, dass die Bezüge der Oberwalzen einem zu großen Verschleiß unterliegen oder durch die strukturierten Arbeitsflächen der Unterwalzen beschädigt werden.As further described in
Gemäß Anspruch 5 ist in vorteilhafter Weise die Belastungskraft der der Eingangs- und Mittelwalzen größer als 25 daN.Advantageously, according to
Wie in den Ansprüchen 6 und 7 beschrieben, weisen in vorteilhafter Ausführungsform die Oberwalzen einen Durchmesser von 40 - 60 mm und die Unterwalzen einen Durchmesser von 30 - 40 mm auf.
Bei entsprechenden, an die Verhältnisse der Praxis angenäherten Versuchen hat sich gezeigt, dass solche Walzendurchmesser sowohl im Bereich der Ober- als auch im Bereich der Unterwalzen optimal sind. Das heißt, als Unterwalzen haben sich strukturierte Wellensegmente mit einem Durchmesser von 38 mm, die zu einem durchgehenden, maschinenendseitig angetriebenen Bauteil verbunden sind, als sehr vorteilhaft erwiesen.
Die jeweils in einem Pendelträger gelagerten Oberwalzen weisen vorzugsweise einen Durchmesser von 50 mm auf, was sich in Kombination mit den vorstehend beschriebenen, strukturierten Unterwalzen mit einem Durchmesser von 38 mm ebenfalls als sehr vorteilhaft erwiesen hat.As described in
With appropriate, approximated to the conditions of practice experiments has been found that such roller diameters are optimal both in the upper and in the area of the lower rollers. That is, as a lower rollers, structured shaft segments having a diameter of 38 mm, which are connected to a continuous, machine-end driven component, have proven to be very advantageous.
The top rollers each mounted in a pendulum carrier preferably have a diameter of 50 mm, which has also proved to be very advantageous in combination with the above-described, structured bottom rollers with a diameter of 38 mm.
Gemäß Anspruch 6 weist das Streckwerk eine Verdichtungseinrichtung auf, die an eine Unterdruckquelle angeschlossen ist. Die Verdichtungseinrichtung sorgt dafür, dass der getrennte Filamentstrang im Bereich einer so genannten Verdichtungszone zu einem Gebilde gebündelt wird, das anschließend auf einer Ringspinnspindel zu einem Faden versponnen werden kann.According to claim 6, the drafting device on a compression device which is connected to a vacuum source. The compacting device ensures that the separated filament strand is bundled in the region of a so-called compaction zone to form a structure, which can then be spun onto a thread on a ring spinning spindle.
Wie im Anspruch 9 dargelegt, ist in einer vorteilhaften Ausführungsform der Verdichtungseinrichtung vorgesehen, dass zur Verdichtung des Filamentstranges ein umlaufendes perforiertes Riemchen zum Einsatz kommt. Dieses perforierte Riemchen umfasst beispielsweise eine angetriebene Unterwalze sowie ein Führungsgehäuse, das über eine Pneumatikleitung an die Unterdruckquelle angeschlossen ist.As set forth in
Derartig ausgebildete und arbeitende Verdichtungseinrichtungen sind im Zusammenhang mit Ringspinnmaschinen-Streckwerken zwar nicht grundsätzlich neu, arbeiten aber sehr zuverlässig und sind auch für den erfindungsgemäßen Einsatzzweck sehr vorteilhaft. Das heißt, bei einer Verdichtungseinrichtung, wie sie beim erfindungsgemäßen Streckwerk zum Einsatz kommt, wird ein das Ausgangswalzenpaar verlassender, getrennter Filamentstrang in noch ungedrehtem Zustand, das heißt, mit im Wesentlichen parallel zueinander liegenden Filamentstücken, pneumatisch in einer so genannten Verdichtungszone durch ein unterdruckbeaufschlagtes Transport- und Verdichtungsmittel kontaktiert. Die in diesem Transport- und Verdichtungsmittel anstehende Saugluftströmung sorgt dafür, dass die Filamentstücke in Transportrichtung positioniert und damit zu einem Faserverband gebündelt und verdichtet werden.Such trained and working compression devices are not fundamentally new in connection with ring spinning machine drafting systems, but work very reliably and are also very advantageous for the purpose of the invention. That is, in a compacting device, as used in the drafting device according to the invention, a separate filament strand leaving the pair of outfeed rollers is still in a non-rotated state, that is, with filamentary pieces substantially parallel to each other, pneumatically in a so-called compression zone by a vacuum-pressurized transport - And compacting contacted. The pending in this transport and compression means Saugluftströmung ensures that the filament pieces are positioned in the transport direction and thus bundled and compacted into a fiber structure.
In einer alternativen Ausführungsform kann die Verdichtungseinrichtung, wie im Anspruch 10 beschrieben, allerdings auch über eine umlaufende perforierte, hohle Walze, die an eine Unterdruckquelle angeschlossen ist, verfügen.
Auch durch eine solche Verdichtungseinrichtung können die Filamentstücke in Transportrichtung positioniert und damit zu einem Faserverband gebündelt und verdichtet werden.In an alternative embodiment, however, the compacting device as described in
By such a compression device, the filament pieces can be positioned in the transport direction and thus bundled and compacted into a fiber structure.
Im Anspruch 11 ist des Weiteren dargelegt, dass das Eingangswalzenpaar und das Mittelwalzenpaar ein so genanntes Vorverzugsfeld bilden, in dem ein 1,8 bis 2,5facher Vorverzug der Filamente stattfindet. Das heißt, der Verzugswert des Vorverzuges wird gegenüber dem bei Langstapeln sonst üblichen Vorverzugswert erhöht, was eine bessere Verzugsaufteilung zwischen Haupt- und Vorverzugsfeld ergibt.
Eine solche Ausbildung hat insbesondere den Vorteil, dass die aufzuwendenden Kräfte mehr auf den Vorverzug gelegt werden und dadurch der Hauptverzug entlastet wird.In
Such a design has the particular advantage that the forces to be expended are placed more on the preliminary delay and thus the main delay is relieved.
Die Erfindung wird nachfolgend anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels näher erläutert.The invention will be explained in more detail with reference to an embodiment shown in the drawings.
Es zeigt:
- Fig.1
- in Seitenansicht einen halbseitigen Querschnitt einer Ringspinnmaschine, die ein erfindungsgemäß ausgebildetes Streckwerk aufweist,
- Fig.2
- in einem größeren Maßstab eine erste, vorteilhafte Ausführungsform des in
Fig.1 schematisch dargestellten, erfindungsgemäßen Streckwerks, - Fig.3
- eine weitere Ausführungsform des erfindungsgemäßen Streckwerks.
- Fig.1
- in side view a half-side cross-section of a ring spinning machine, which has a drafting device designed according to the invention,
- Fig.2
- on a larger scale, a first advantageous embodiment of the in
Fig.1 schematically illustrated drafting system according to the invention, - Figure 3
- a further embodiment of the drafting system according to the invention.
Die
Im dargestellten Ausführungsbeispiel weist die Ringspinnmaschine 1 ein Fußgestell 2 auf, von dem aus sich vertikale Standrohre 3 nach oben erstecken, welche Absaugkanäle 4 tragen, die im Querschnitt vorzugsweise rechteckig ausgebildet sind.
An den Standrohren 3 sind außerdem Brückenstücke 5 befestigt, die ihrerseits zwei in Maschinenlängsrichtung verlaufende, parallele Tragrohre 6 haltern, an denen die Lagergehäuse 7 für eine Vielzahl von Ringspinnspindeln festgelegt sind.
In
In the illustrated embodiment, the ring spinning machine 1 on a
At the
In
Auf den Absaugkanälen 4 ruhen so genannte Stanzen 9, die jeweils Bestandteil eines erfindungsgemäßen Streckwerkes 10 sind.
Im dargestellten Ausführungsbeispiel sind die Stanzen 9 außerdem an zwei sich in Maschinenlängsrichtung erstreckenden Tragrohren 11 befestigt.On the
In the illustrated embodiment, the
Die Ringspinnmaschine 1 verfügt des Weiteren über vertikal angeordnete Tragsäulen 13 für ein Vorlagematerialgatter 14.
Im Ausführungsbeispiel hängen im Voriagematerialgatter 14 Filament-Vorlagespulen 15, deren Vorlagematerial über eine Umlenkstange 24 oder dgl. abgezogen wird.The ring spinning machine 1 further has vertically arranged
In the exemplary embodiment hang in
Seitlich neben den Absaugkanälen 4 ist außerdem ein Teil des Bewegungsmechanismus' 25 der Ringspinnmaschine 1 installiert.
Das heißt, in diesem Bereich sind die Hubeinrichtungen für die Ringbank 18, die Balloneinengungsringe 19 sowie die vertikal verschiebbar gelagerten Fadenführer 20 angeordnet.In addition to the
That is, in this area, the lifting devices for the
An einem Ausleger 32 des Fußgestells 2 der Ringspinnmaschine 1 ist des Weiteren eine Spulenwechseleinrichtung 33 angeordnet, die im Wesentlichen aus mehreren Scherensystemen mit Scherenarmen 34 und 35, einem Greiferbalken 36 sowie am Greiferbalken 36 angeordneten Hülsengreifern 37 besteht.On a
Die Scherensysteme sind dabei mittels eines Schub-/Zugrohres 38, das längs der Ringspinnmaschine 1 verläuft, betätigbar.The scissors systems are actuated by means of a push /
Die
Solche Streckwerke 10 verfügen, wie an sich bekannt, unter anderem über maschinenlange, antreibbare Unterwalzen 21 u, 22u und 23u sowie über Oberwalzen 210, 220 und 230, die während des Spinnbetriebes auf den Unterwalzen 21 u, 22u und 23u aufliegen und von diesen reibschlüssig mitgenommen werden.
Die maschinenlangen, antreibbaren Unterwalzen 21u, 22u und 23u sind über Schlitten 41 auf Stanzen 9 gelagert wobei die Einbaulage der Unterwalze 21u, 22u und 23u, das heißt, der Abstand der Schlitten 41 zueinander, mittels entsprechender Schraubenbolzen 42 oder dgl. einstellbar ist
Die maschinenlangen Unterwalzen 21 u, 22u und 23u sind in der Regel ihrerseits jeweils aus einer Vielzahl von Walzensegmentstücken mit einem Durchmesser zwischen 30 - 40 mm zusammengesetzt, wobei die Walzensegmentstücke im Bereich ihrer Arbeits - flächen mit einer Strukturierung 40 ausgestattet sind.
The machine-length, drivable
The machine-length
Wie vorstehend bereits angedeutet, sind solche Unterwalzen 21 u, 22u und 23u außerdem, beispielsweise über ein (nicht dargestelltes) Untersetzungsgetriebe, so an einen maschinenendseitig angeordneten elektromotorischen Antrieb angeschlossen, dass die Drehzahl der Unterwalzen 21u, 22u und 23u vorgebbar ist.
Das heißt, über die Drehzahl der Unterwalzen 21u, 22u und 23u ist sowohl der Verzugswert in einem zwischen dem Eingangswalzen-paar 21 und dem Mittelwalzenpaar 22 liegenden Vorverzugsfeld 43, als auch der Verzugswert in einem zwischen dem Mittelwalzenpaar 22 und dem Ausgangswalzenpaar 23 angeordneten Hauptverzugsfeld 44 definiert einstellbar.As already indicated above, such
That is, by the rotation speed of the
Wie aus der
Am Pendelträger 12 sind außerdem, wie bekannt, über entsprechende (nicht dargestellte) Halteelemente in paarweiser Anordnung die Oberwalzen 210, 220 und 230 des Streckwerkes 10 gelagert.
Die Belastungskraft, das heißt, die Kraft, mit der die Oberwalzen 21 o bis 230 auf ihren zugehörigen Unterwalzen 21u bis 23u aufliegen, ist durch die Konstruktion des Pendelträgers 12 (federbelastete anstelle pneumatisch gespannte Oberwalzen) sowie die einstellbare Andruckkraft der Oberwalzen vorgebbar und ist für die Ausgangsoberwalzen des Pendelträgers 12 größer als 35 daN sowie für die Eingangs- und Mitteloberwalzen 210 und 220 auf 25 daN eingestelltOn
The loading force, that is, the force with which the upper rollers 21 o to 230 rest on their associated
Die Oberwalzen 210, 220 und 230 weisen vorzugsweise jeweils einen Durchmesser zwischen 40 und 60 mm auf und sind mit einem relativ abriebfesten Bezug 30 ausgestattet, dessen Härte zwischen 60 bis 70 Shore für die Ausgangsoberwalzen und 80 bis 90 Shore für die Eingangs- und Mitteloberwalzen beträgt.The
Wie aus
Die Einrichtung 29 zum Abführen elektrostatischer Aufladungen ist beispielsweise an eine der Stanzen 9 des Streckwerkes 10 angeschlossen und geerdet Solche Einrichtungen zum Abführen elektrostatischer Aufladungen sind im Zusammenhang mit Textilmaschinen nicht grundsätzlich neu und beispielsweise in der
Auch Verdichtungseinrichtungen sind im Zusammenhang mit Streckwerken von Textilmaschinen grundsätzlich bekannt und in zahlreichen Patentanmeldungen in verschiedenen Ausführungsformen ausführlich beschrieben.Also, compacting devices are basically known in connection with drafting systems of textile machines and described in detail in numerous patent applications in various embodiments.
In der
Des Weiteren ist in der
Furthermore, in the
Auch beim erfindungsgemäßen Streckwerk 10 ist, wie im Ausführungsbeispiel gemäß
Das heißt, die Stanze 9 ist mit einer Lagereinrichtung 47 für einen Schlitten 41 ausgestattet, in dem eine vorzugsweise maschinenlange, maschinenendseitig angetriebene Verdichtungs-Unterwalze 48 gelagert ist, die über eine rotierbar gelagerte Zwischenwalze 48a sowie ein antreibbares, perforiertes Riemchen 51 eine Verdichtungs-Oberwalze 49 reibschlüssig antreibt
Das perforierte Riemchen 51 umfasst dabei ein im Bereich der Lagereinrichtung 47 installiertes Führungsgehäuse 60, das über eine Pneumatikleitung 50 an eine Unterdruckquelle 52 angeschlossen ist.
Bei derartig ausgebildeten Verdichtungseinrichtungen 28 sorgt während des Spinnbetriebes ein über das umlaufende, perforierte Riemchen 51 in das unterdruckbeaufschlagte Führungsgehäuse 60 eintretender Luftstrom 53 dafür, dass die getrennten Filamentstücke 27 im Bereich der Verdichtungszone 39 im Wesentlichen parallel gebündelt werden, so dass sie mittels einer nachfolgend angeordneten Ringspinnspindel zu einem Faden 26 verspinnbar sind.That is, the
The
In the case of
Das Streckwerk 10 kann zusätzlich allerdings auch über einige mechanisch wirkende Führungs- und Verdichtungseinrichtungen verfügen.
Das Streckwerk 10 kann beispielsweise einen so genannten Eingangsverdichter 56, einen Vorfeldverdichter 57 sowie einen Hauptfeldverdichter 58 aufweisen, wobei im Bereich des Hauptverzugsfeldes 44 außerdem eine Führungsschiene 55 installiert sein kann, die derart von dem Ausgangswalzenpaar 23 beabstandet ist, dass Fasern beim Reinigungsvorgang durch einen Wanderbläser hier nicht gestaut werden und zu Fadenbrüchen führen.However, the
The
Bei der in
Das heißt, auch bei dieser Ausführungsform ist die Stanze 9 mit einer Lagereinrichtung 47 ausgestattet, in der eine vorzugsweise maschinenlange, maschinenendseitig angetriebene Verdichtungs-Unterwalze 48 gelagert ist, auf der die unterdruckbeaufschlagbare Verdichtungs-Oberwalze 59 aufliegt.That is, also in this embodiment, the
Im dargestellten Ausführungsbeispiel ist die Verdichtungs-Oberwalze 59 beispielsweise am Pendelträger 12 gelagert und über eine Pneumatikleitung 50 an eine Unterdruckquelle 52 angeschlossen.
Die Verdichtungs-Oberwalze 59 ist dabei mit einer Perforation 31 ausgestattet, die dafür sorgt, dass die getrennten Filamentstücke 27 parallel gebündelt werden, so dass sie an einer nachfolgend angeordneten Ringspinnspindel zu einem Faden verspinnbar sind.In the illustrated embodiment, the
The
Claims (10)
- Drafting system for a spinning machine for breaking up and drafting filaments, with at least one back roller pair (21), a middle roller pair (22) and a front roller pair (23), wherein the roller pairs rotate at different rotational speeds, the bottom rollers (21u, 22u, 23u) are designed as partly corrugated waves and the top rollers (21o, 22o, 23o) are mounted in a pendulum carrier (12),
characterised in that
the surfaces of all of the roller pairs (21, 22, 23) of the drafting system (10) are in contact with one another without the interconnection of straps in order to guide the filaments (27) in a clamping manner, and thereby break them up by means of their different rotatinal speeds and draft them by forming staple fibres,
in that the loading force of the back and middle top rollers (21o, 22o) is greater than 25 daN,
in that the loading force of the front top rollers (23o) is greater than 35 daN and
in that a compaction device (28) is installed behind the front roller pair (23) in conveying direction of the filaments (27). - Drafting system according to claim 1, characterised in that a device (29) for discharging electrostatic charge is connected to the drafting system (10).
- Drafting system according to claim 1, characterised in that the top rollers (21o, 22o, 23o) are each equipped with a cover (30) which has a hardness of 60 to 90 Shore.
- Drafting system according to claim 3, characterised in that the cover of the front top rollers (23o) has a hardness of 60 to 70 Shore and the covering of the back and middle top rollers (21o, 22o) has a hardness of 80 to 90 Shore.
- Drafting system according to claim 1, characterised in that the top rollers (21o, 22o, 23o) each have a diameter of 40 - 60 mm.
- Drafting system according to claim 1, characterised in that the bottom rollers (21 u, 22u, 23u) each have a diameter of 30 - 40 mm.
- Drafting system according to claim 1, characterised in that the compaction device (28) is connected via a pneumatic line (50) to a source of negative pressure (52).
- Drafting system according to claim 7, characterised in that the compaction device (28) has a rotating, driven, perforated strap (51), which encircles a guide housing (6) charged with negative pressure.
- Drafting system according to claim 7, characterised in that the compaction device (28) has a rotating, perforated compaction top roller (59) charged with negative pressure.
- Drafting system according to claim 1, characterised in that the back roller pair (21) and the middle roller pair (22) form a preliminary drafting zone (43), in which a 1.8 to 2.5 times preliminary drafting of the filaments (27) takes place.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210013574 DE102012013574A1 (en) | 2012-07-06 | 2012-07-06 | Drafting system for a spinning machine |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102012013574 Previously-Filed-Application | 2012-07-06 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2682509A2 EP2682509A2 (en) | 2014-01-08 |
EP2682509A3 EP2682509A3 (en) | 2015-05-06 |
EP2682509B1 true EP2682509B1 (en) | 2017-02-01 |
Family
ID=48669745
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13003034.9A Not-in-force EP2682509B1 (en) | 2012-07-06 | 2013-06-13 | Stretching unit for a spinning machine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2682509B1 (en) |
CN (1) | CN103526352A (en) |
DE (1) | DE102012013574A1 (en) |
ES (1) | ES2614476T3 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015014421A1 (en) * | 2015-10-22 | 2017-04-27 | Saurer Germany Gmbh & Co. Kg | Drawframe and bearing for a shaft of a drafting system |
CH714445A1 (en) * | 2017-12-15 | 2019-06-28 | Rieter Ag Maschf | Drafting system for a spinning machine with a compacting device. |
CN108589022B (en) * | 2018-07-02 | 2023-12-05 | 海安国洋机械科技有限公司 | Metal fiber stretch-breaking spraying device |
CN110067059B (en) * | 2019-05-22 | 2021-10-29 | 安徽翰联色纺股份有限公司 | Production method of composite blended yarn |
Family Cites Families (23)
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GB424830A (en) * | 1933-05-22 | 1935-02-22 | British Celanese | Improvements in the manufacture of yarns containing staple fibre from continuous filaments |
US2077320A (en) * | 1933-09-05 | 1937-04-13 | Celanese Corp | Manufacture of staple fiber yarns from continuous filaments |
GB484193A (en) * | 1936-07-31 | 1938-05-02 | William Pool | Improvements in the conversion of continuous filaments into staple fibres |
CH242571A (en) * | 1943-11-05 | 1946-05-31 | Onderzoekings Inst Res | Method and device for the production of rayon yarns by tearing endlessly spun bundles of rayon threads and then immediately twisting the torn pieces of thread together. |
CH256210A (en) * | 1947-06-20 | 1948-08-15 | Rieter Joh Jacob & Cie Ag | A method of making a short fiber yarn and apparatus for carrying out the method. |
FR1114964A (en) * | 1954-10-28 | 1956-04-18 | Const Mecaniques De Stains Soc | Method and device for the manufacture of mixed yarns |
DE1229426B (en) | 1960-02-05 | 1966-11-24 | Howa Machinery Ltd | Line for mixing fibers |
GB1524145A (en) * | 1976-08-05 | 1978-09-06 | Dayco Corp | Textile cot assembly |
DE2846065A1 (en) | 1978-10-23 | 1980-04-30 | Schlafhorst & Co W | Silver roller drawing unit - has a blade to prevent build-up on lower roller |
DE3016409A1 (en) | 1980-04-29 | 1981-11-05 | W. Schlafhorst & Co, 4050 Mönchengladbach | Sliver drafting system - has suction channel in main draft zone to extract dust and short fibres |
DE3128870A1 (en) | 1981-07-22 | 1983-02-10 | Fritjof Dipl.-Ing. Dr.-Ing. 6233 Kelkheim Maag | Drafting unit for the drafting of spinning fibre slivers |
DE19824078C2 (en) * | 1998-05-29 | 2001-05-31 | Zinser Textilmaschinen Gmbh | Process for the production of compacted yarn and device therefor |
DE19932099A1 (en) | 1999-07-09 | 2001-01-11 | Rieter Ag Maschf | Drafting system for spinning machine has sliver condensing arrangement separate from but connected to the drafting system |
DE10008610A1 (en) | 2000-02-24 | 2001-08-30 | Zinser Textilmaschinen Gmbh | Sliver drawing unit has a condensing stage with a profiled shrouding facing the suction unit in a mounting with easy adjustment and which reduces the energy for the required suction to condense the sliver |
EP1205587A3 (en) * | 2000-11-10 | 2002-12-11 | Maschinenfabrik Rieter Ag | Methode and device for spinning a yarn out of tearable filaments |
DE10214339A1 (en) * | 2002-03-28 | 2003-10-16 | Rieter Ingolstadt Spinnerei | Drafting system for a spinning machine |
DE10317430B4 (en) * | 2003-04-15 | 2011-05-12 | Rieter Ingolstadt Gmbh | Textile machine with a drafting system |
DE102004052177B4 (en) * | 2004-10-27 | 2013-10-31 | Rieter Ingolstadt Gmbh | Spinning preparation machine and housing for a drafting system of a spinning preparation machine |
US7937924B2 (en) | 2005-11-16 | 2011-05-10 | Lorica International, Inc. | Fire retardant compositions and methods and apparatuses for making the same |
CN101092766A (en) * | 2006-06-19 | 2007-12-26 | 天津宏大纺织机械有限公司 | Drafting device and control method of flyer frame |
DE102007039522B4 (en) * | 2007-08-21 | 2019-10-02 | Trützschler GmbH & Co Kommanditgesellschaft | Device on a drafting system of a range for textile fiber ribbons |
DE202007013020U1 (en) * | 2007-09-17 | 2007-11-22 | Sefar Ag | Siebriemchen for a drafting of a spinning machine and stretching device with a Siebriemchen |
DE102010054850A1 (en) | 2009-12-28 | 2011-06-30 | Rotorcraft Ag | Compressor device for arrangement in compressing zone downstream to stretching unit, has wear-resistant attachment part and holding part, with which attachment part is axially and radially fixed in relation to roller |
-
2012
- 2012-07-06 DE DE201210013574 patent/DE102012013574A1/en not_active Withdrawn
-
2013
- 2013-06-13 EP EP13003034.9A patent/EP2682509B1/en not_active Not-in-force
- 2013-06-13 ES ES13003034.9T patent/ES2614476T3/en active Active
- 2013-07-03 CN CN201310350247.1A patent/CN103526352A/en active Pending
Also Published As
Publication number | Publication date |
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DE102012013574A1 (en) | 2014-05-22 |
EP2682509A3 (en) | 2015-05-06 |
CN103526352A (en) | 2014-01-22 |
ES2614476T3 (en) | 2017-05-31 |
EP2682509A2 (en) | 2014-01-08 |
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