EP3415670B1 - Rotor socket for an open-end spinning rotor and method for manufacturing a rotor socket for an open-end spinning rotor - Google Patents
Rotor socket for an open-end spinning rotor and method for manufacturing a rotor socket for an open-end spinning rotor Download PDFInfo
- Publication number
- EP3415670B1 EP3415670B1 EP18176280.8A EP18176280A EP3415670B1 EP 3415670 B1 EP3415670 B1 EP 3415670B1 EP 18176280 A EP18176280 A EP 18176280A EP 3415670 B1 EP3415670 B1 EP 3415670B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- separating structures
- rotor cup
- cup
- separating
- 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.)
- Active
Links
- 238000007383 open-end spinning Methods 0.000 title claims description 25
- 238000004519 manufacturing process Methods 0.000 title claims description 19
- 238000000034 method Methods 0.000 title claims description 18
- 238000000576 coating method Methods 0.000 claims description 20
- 239000011248 coating agent Substances 0.000 claims description 19
- 230000001788 irregular Effects 0.000 claims description 6
- 238000000608 laser ablation Methods 0.000 claims description 5
- 238000002679 ablation Methods 0.000 claims description 4
- 229910003460 diamond Inorganic materials 0.000 claims description 4
- 239000010432 diamond Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims 1
- 238000009987 spinning Methods 0.000 description 25
- 238000002360 preparation method Methods 0.000 description 15
- 239000000835 fiber Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 10
- 238000000926 separation method Methods 0.000 description 10
- 238000005520 cutting process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000000227 grinding Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H7/00—Spinning or twisting arrangements
- D01H7/02—Spinning or twisting arrangements for imparting permanent twist
- D01H7/74—Cup or like arrangements
- D01H7/78—Constructions of cups, e.g. spinning boxes
-
- 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
- D01H4/04—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 imparting twist by contact of fibres with a running surface
- D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
- D01H4/10—Rotors
-
- 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
- D01H4/48—Piecing arrangements; Control therefor
- D01H4/50—Piecing arrangements; Control therefor for rotor spinning
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H2700/00—Spinning or twisting machines; Drafting devices
- D01H2700/01—Preparatory spinning machines
Definitions
- the present invention relates to a method for producing a rotor cup for an open-end spinning rotor, in which a front edge of the rotor cup is provided with separating structures for interrupting and preparing a yarn end for piecing.
- the invention also relates to a rotor cup for an open-end spinning rotor with an inner rotor wall, an outer rotor wall, a rotor base and an opening opposite the rotor base, with a front edge of the rotor cup being provided with separating structures for interrupting and preparing a yarn end for piecing.
- the DE 34 29 511 A1 describes, for example, a method for producing a spinning rotor in which the fiber sliding surface and/or the fiber collecting groove is eroded in a point-like manner until it is provided with a large number of erosion craters. This is intended to achieve good orientation of the spinning fibers during spinning and to avoid an uneven accumulation of dirt in the fiber groove. This is intended to improve the spinning result.
- the DE 196 51 419 A1 proposed adding coarser profiling to a fiber collection groove that contains fine structuring. This combination is said to result in higher yarn strength and a more even yarn.
- the DE 10 2012 110 926 A1 describes a method for preparing a yarn end for piecing, in which the yarn is not prepared for piecing by a separate preparation device outside the spinning device, but inside the spinning device by the edge of the spinning rotor.
- the yarn is sucked into the vacuum channel via a small draw-off tube and a draw-off nozzle, via which the open-end spinning device is supplied with negative pressure, and is held therein.
- the yarn runs over the open edge of the spinning rotor and is interrupted by it as soon as the spinning rotor starts to rotate.
- the edge of the spinning rotor has separating structures for separating and preparing the yarn end.
- the edge of the spinning rotor is provided with incisions, which then have the effect of a saw.
- the incisions are filled with an abrasive, which then also has a sawing or grinding effect.
- the DE 10 2015 117 204 A1 also shows such a spinning rotor with separation structures for preparing a yarn end for repiecing.
- the separating structures should not be applied to the spinning rotor by cutting, but rather by knurling.
- a non-mechanical manufacturing method is understood as meaning a method in which the separating structures are introduced without pressure, ie without the application of forces to the rotor cup during the production of the separating structures.
- the separating structures can be introduced into the edge of the open-end spinning rotor in a particularly gentle manner, without deforming or even damaging it.
- the separating structures are applied by a non-mechanical removal method, since the separating structures are thereby firmly connected to the rotor cup or the open edge of the rotor cup.
- a non-mechanical removal method it is possible to apply the separating structures in the form of microprofiling with a profile depth of less than 100 ⁇ m.
- the edges of the separating structures can be formed with comparatively sharp edges as a result of the non-mechanical removal or coating. The sharp-edged separation structures can therefore effectively mill and reliably cut the yarn end to be prepared for piecing.
- a rotor cup for an open-end spinning rotor which has an inner rotor wall and an outer rotor wall, a rotor base and an opening opposite the rotor base, and in which a front edge of the rotor cup is provided with separating structures for interrupting and preparing a yarn end for piecing
- the separating structures have a surface with a microprofile, ie a profile whose profile depth is less than 100 microns.
- a microprofile is applied using the non-mechanical methods described.
- yarn end preparation that is particularly gentle on the yarn and yet effective is possible. It is also particularly advantageous with such a microprofile that the risk of fibers getting caught after the yarn end preparation is reduced.
- the profile depth of the microprofile is preferably less than 50 ⁇ m and preferably more than 5 ⁇ m.
- the microprofile is irregular.
- an irregular microprofile is understood to be a profile whose height or depth, i.e. the distance between high points and low points of the profile, varies in each case or whose high points and/or low points are arranged at unequal distances from one another.
- the separating structures are designed in the form of depressions. As described above, these can be introduced in a particularly advantageous manner by a non-mechanical removal process. However, it is also possible to form the separating structures in the form of elevations. For this purpose it is possible, for example, to partially provide the open edge of the rotor cup with a coating.
- the separating structures are to be provided in the form of depressions, it is advantageous if the separating structures are applied by laser ablation.
- Laser ablation can be used to produce a microprofile with a high level of irregularity or ablation that varies greatly locally, which can be used particularly advantageously with a wide variety of applications. As a result, it is not necessary to have different open-end spinning rotors with different separating structures on hand.
- the separating structures are applied using an electrochemical removal process. This also makes it possible to produce a technologically favorable microprofile that is suitable for a wide variety of applications.
- the separating structures are applied in the form of a plurality of depressions which are spaced apart from one another, preferably equidistantly spaced apart from one another. It is also advantageous in the case of the rotor cup if the edge is provided with a plurality of separating structures, in particular depressions, arranged at a distance from one another. By arranging several separating structures next to one another, the severing of the yarn can also be ensured when the spinning rotor is only performing one revolution or even only part of a revolution. This gives the edge of the rotor cup a grinding effect, which, thanks to the micro-profile, nevertheless allows the fibers at the end of the yarn to be opened gently.
- the rotor cup is produced by turning, the turning of the rotor cup and the application of the separating structures taking place in the same production step.
- the separating structures by laser removal, it is possible, for example, to fix the laser device to the lathe and direct the laser at the edge of the rotor cup.
- By rotating the rotor cup further by a specific angle of rotation it is possible in a simple manner to apply a plurality of separating structures to the rotor cup at any spacing.
- the rotor cup is provided with a coating, in particular with a nickel-diamond coating.
- a coating in particular with a nickel-diamond coating.
- the separating structures are only introduced into the coating. The yarn is therefore only in contact with the resistant coating in the area of the separating structures, so that premature wear of the rotor cup can be avoided as a result.
- the separating structures are distributed over the entire circumference of the rotor cup.
- the yarn end can be severed and prepared independently of a position of the spinning rotor or independently of an angle of rotation of the spinning rotor, which it executes during the preparation of the yarn ends.
- a particularly uniform and reproducible yarn end preparation can be achieved in this way.
- the separating structures have a width of less than 0.5 mm, preferably less than 0.3 mm and particularly preferably less than 0.2 mm.
- the separating structures have a depth or a height of less than 100 ⁇ m, preferably less than 70 ⁇ m and in particular preferably have less than 50 microns. This achieves a fine profiling of the surface of the edge of the rotor cup, which ensures good and reliable yarn end preparation and at the same time does not affect the mechanical properties of the rotor cup.
- the fine separating structures with a width of less than 1 mm and preferably less than 0.3 mm also result in a very fine surface structuring, which does not impair the concentricity of the rotor cup.
- the separating structures in particular the depressions, have a distance of between 0.2 mm and 1.5 mm, preferably 0.2 mm to 1.0 mm and particularly preferably 0.3 mm to 0.8 mm from one another exhibit. If the separating structures are arranged at such a distance, the result is a favorable rubbing effect. It has been shown that a distance between adjacent separating structures with the stated dimensions is particularly suitable for a wide variety of yarn types and yarn counts. However, it is also possible to influence the grinding effect on the thread by the distance between the separating structures, so that depending on the distance between the separating structures, the open-end spinning rotor is particularly suitable either for finer or for coarser yarns or for certain materials.
- the separating structures reach into the inner rotor wall and/or into the outer rotor wall.
- the safety of yarn cutting and yarn preparation can be increased as a result, since cutting and yarn end preparation can still take place if the yarn is guided at an angle over the edge of the open edge of the rotor cup and thus does not sweep over the flat edge directly.
- FIG 1 shows a schematic sectional view of an open-end spinning device 2 with an open-end spinning rotor 1.
- the open-end spinning rotor 1 is mounted in the usual way in a rotor housing 3, with the rotor housing 3 being subjected to negative pressure during regular spinning operation via a negative pressure channel 8 and by means of a Cover 4 is closed.
- the open-end spinning rotor 1 has a rotor shaft 9, by means of which it is mounted in the rotor housing 3, and a rotor cup 10, in which a yarn 5 is also produced in a known manner.
- the yarn 5 is drawn off during regular spinning operation via a draw-off nozzle 6 mounted in the cover 4 and optionally a draw-off tube 7 and fed to a winding device, not shown here, where it is wound onto a spool.
- the rotor cup 10 of the open-end spinning rotor 1 also has, in a conventional manner, an inner rotor wall 12 onto which the fibers to be spun are fed, a fiber collecting groove 15 in which the fibers accumulate in the form of a fiber ring and into the end of the yarn already produced 5 are integrated, as well as a rotor base 14, on which the rotor cup 10 is connected to the rotor shaft 9.
- the rotor cup 10 has an opening 11 into which a projection of the cover 4, which carries the draw-off nozzle 6, protrudes during regular spinning operation, so that the yarn 5 can be drawn off via the draw-off nozzle 6 and the draw-off tube 7.
- the rotor cup 10 also has an outer rotor wall 13 and a front edge 16 which extends between the outer rotor wall 13 and the inner rotor wall 12 and together with the inner rotor wall 12 delimits the opening 11 .
- a yarn end 5a must be cut to length and prepared for re-piecing in a defined manner so that it can then be returned to the fiber collection groove 15 of the rotor cup 10 and piecing again.
- the cutting of the yarn 5 and the preparation of the yarn end 5a for re-tightening takes place at the front edge 16.
- the yarn end 5 is guided through the discharge tube 7 and the discharge nozzle 6 into the rotor housing 3 and sucked into the vacuum channel 8, where it is drawn through the Effect of the negative pressure is recorded. Again figure 1 removed, the yarn end 5a is guided over the front edge 16 of the rotor cup 10.
- the edge 16 is for preparing the yarn end 5a with separating structures 17 (see Figures 2-6 ) Mistake.
- the open-end spinning rotor 1 is rotated during the preparation of the yarn ends, so that the yarn end 5a guided over the edge 16 or resting on the edge 16 is severed and frayed by a sawing or grinding effect of the separating structures 17 .
- the yarn end 5a can be fed to the already rotating spinning rotor 1, or the yarn end 5a can first be placed on the front edge 16 of the open-end spinning rotor 1 that is still standing and the open-end spinning rotor 1 only then be set in rotation.
- the separation structures17 can be designed as elevations 22 or depressions 18 and can be introduced into the edge 16 in various ways.
- figure 2 shows a first embodiment of a rotor cup 10 with separating structures 17, which are not applied over the entire circumference, but only in the present case on two opposite partial areas.
- a top view of the opening 11 and the front edge 16 of the rotor cup 10 is shown.
- the rotor base 14 and part of the outer rotor wall 13 can also be seen.
- a plurality of separating structures 17 are arranged equidistantly from one another.
- a first number of separating structures 17 is provided in a first partial area of the edge 16 and a second number of separating structures 17 in a second partial area of the edge 16 .
- Deviating from the representation shown it would of course also be possible to arrange the separating structures 17 at non-uniform distances.
- figure 3 shows another embodiment of a rotor cup 10, in which the separating structures 17 are also spaced equidistantly from one another, but are distributed over the entire circumference of the rotor cup 10 or the edge 16.
- the separating structures 17 are also spaced equidistantly from one another, but are distributed over the entire circumference of the rotor cup 10 or the edge 16.
- FIG 4 shows an enlarged view of a section of the edge 16 of a rotor cup 10, the separating structures 17 arranged next to one another being visible again.
- the separating structures 17 in this case have a surface with a microprofile 20, which is only indicated in the present case on a separating structure and is explained below with reference to FIG Figures 5 and 6 will be described in more detail.
- the individual separating structures 17 are again arranged equidistantly at a distance A from one another.
- the distance A is approximately 0.5 mm in the example shown, with the individual separating structures 17 having a width B of approximately 0.15 mm.
- Such a comparatively fine arrangement of separating structures 17 has proven to be advantageous for the reliable severing and preparation of a wide variety of yarns.
- the separating structures 17 are not only attached directly to the flat front edge 16 of the rotor cup 10, but also extend a little further into the outer rotor wall 13 or the inner rotor wall 12. Reliable yarn end preparation is thus also achieved when the yarn end 5a is not guided flat over the edge 16 but only touches it at an angle in the edge regions.
- figure 5 shows a cross section through a separating structure 17 in a broken representation.
- the separating structure 17 is designed as a depression 18 and has a surface with a microprofile 20 .
- a microprofile 20 is understood to mean a profile which has a profile depth PT of less than 100 ⁇ m.
- the tread depth T is like that figure 5 removed, defined as the distance between the highest and the lowest point of the micro-profile 20 or as the maximum height difference of the surface of the micro-profile 20.
- the depth T of the separating structure 17 can be seen, which extends from the original surface of the front edge 16 to the deepest point of the microprofile 20 .
- the width B of the separating structure 17 is again indicated.
- the microprofile 20 is formed irregularly and has individual peaks which are of different heights and are also arranged at different points in relation to the width B of the separating structure 17 .
- the individual peaks are also arranged in an irregular sequence in the longitudinal direction of the separating structure 17, as in FIG figure 4 symbolized by the lowest separating structure 17.
- the separating structure 17 has sharp edges at the edges 23, so that the edges 23 act as cutting edges and the separating structure 17 has a particularly good sawing or milling effect on the yarn.
- the present rotor cup 10 is also provided with a coating 19 which is applied to the base material 21 of the rotor cup 10 .
- the separating structures 17 or the microprofile 20 are only introduced into the coating 19 and do not extend into the base material 21 . In this way, it is achieved in a particularly advantageous manner that the wear-reducing effect of the coating 19 is also still present within the separating structure 17 and excessive wear in the area of the separating structure 17 does not occur.
- the coating 19 is preferably designed as a nickel-diamond coating. Depending on the design of the rotor cup 10, it would of course also be possible to introduce the separating structures 17 directly into the base material 21 of the rotor cup 10. Of course, other coatings or surface treatments of the rotor cup 10 are also possible.
- FIG 6 finally shows another embodiment of a separating structure 17, which is provided in the form of an elevation 22.
- the edges 23, of which only one is designated here, are comparatively sharp-edged.
- a cross section through the separating structure 17 is again shown in a broken representation.
- Such an increase 22 can be produced, for example, by a partial coating of the edge 16 of the rotor cup 10, in which case a sharp-edged edge 23 can also be produced.
- the profile depth PT is smaller than the height H of the separating structure 17.
- the profile depth PT it would also be possible for the profile depth PT to be equal to the height H of the separating structure 17.
- the separating structure 17 it is also possible for the separating structure 17 to be in the form of a depression 18, but for the microprofile 20 to have a highest point above the surface of the edge 16. In this case, the profile depth PT would be greater than the depth T of the depression. Likewise, it would also be possible in the case of an elevation 22 that a lowest point of the microprofile 20 is nevertheless below the surface of the edge 16, so that the profile depth PT would be greater than the height H of the elevation.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Description
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung einer Rotortasse für einen Offenend-Spinnrotor, bei welchem ein stirnseitiger Rand der Rotortasse mit Trennstrukturen zum Unterbrechen und Vorbereiten eines Garnendes zum Anspinnen versehen wird. Weiterhin betrifft die Erfindung eine Rotortasse für einen Offenend-Spinnrotor mit einer inneren Rotorwand, einer äußeren Rotorwand, einem Rotorboden und einer dem Rotorboden gegenüberliegenden Öffnung, wobei ein stirnseitiger Rand der Rotortasse mit Trennstrukturen zum Unterbrechen und Vorbereiten eines Garnendes zum Anspinnen versehen ist.The present invention relates to a method for producing a rotor cup for an open-end spinning rotor, in which a front edge of the rotor cup is provided with separating structures for interrupting and preparing a yarn end for piecing. The invention also relates to a rotor cup for an open-end spinning rotor with an inner rotor wall, an outer rotor wall, a rotor base and an opening opposite the rotor base, with a front edge of the rotor cup being provided with separating structures for interrupting and preparing a yarn end for piecing.
Zur Herstellung von Offenend-Spinnrotoren sind eine Vielzahl von verschiedenen Verfahren bekannt geworden. Die Spinnrotoren werden dabei häufig durch Drehen hergestellt und mit einer Beschichtung versehen, um sie widerstandsfähiger gegen die abrasive Wirkung der Fasern zu machen.A large number of different methods have become known for the production of open-end spinning rotors. The spinning rotors are often made by turning and coated to make them more resistant to the abrasive effects of the fibers.
Die
In ähnlicher Weise schlägt die
Um nach einer Unterbrechung des Spinnprozesses beispielsweise durch einen Fadenbruch oder auch einen Qualitätsschnitt den Spinnvorgang wieder aufnehmen zu können, ist es erforderlich, das anzuspinnende Garnende definiert abzulängen und zum Wiederanspinnen vorzubereiten. Auch zum Vorbereiten eines Garnendes sind verschiedene Verfahren bekannt geworden. Beispielsweise ist es üblich, das Garnende mittels eines Luftstromes aufzufasern.In order to be able to resume the spinning process after an interruption in the spinning process, for example due to a thread breakage or a quality cut, it is necessary to cut the yarn end to be piecing to a defined length and prepare it for piecing again. Various methods have also become known for preparing a yarn end. For example, it is common to unravel the yarn end by means of an air stream.
Die
Die
Aufgabe der vorliegenden Erfindung ist es, ein Verfahren zur Herstellung einer Rotortasse vorzuschlagen, dass ein schonendes Einbringen der Trennstrukturen ermöglicht und eine gute Garnendenvorbereitung gewährleistet.It is the object of the present invention to propose a method for producing a rotor cup that allows gentle introduction of the separating structures and ensures good preparation of the yarn ends.
Die Aufgabe wird gelöst mit den Merkmalen der unabhängigen Ansprüche. Bei einem Verfahren zur Herstellung einer Rotortasse für einen Offenend-Spinnrotor, bei welchem ein stirnseitiger Rand der Rotortasse mit Trennstrukturen zum Unterbrechen und Vorbereiten eines Garnendes zum Anspinnen versehen wird, ist vorgesehen, dass die Trennstrukturen durch ein nichtmechanisches Fertigungsverfahren aufgebracht werden. Dabei wird im Rahmen der vorliegenden Erfindung unter einem nichtmechanischen Fertigungsverfahren ein Verfahren verstanden, bei dem die Einbringung der Trennstrukturen drucklos, also ohne das Aufbringen von Kräften auf die Rotortasse während der Herstellung der Trennstrukturen, erfolgt. Mit einem derartigen nichtmechanischen bzw. drucklosen Fertigungsverfahren können die Trennstrukturen in besonders schonender Weise in den Rand des Offenend-Spinnrotors eingebracht werden, ohne diesen zu verformen oder gar zu beschädigen. Aufgrund der sehr hohen Drehzahlen von bis zu 180.000 1/ min, mit welchen heutige Offenend-Spinnrotoren umlaufen, kann es nämlich selbst beim Aufbringen von nur kleinen Betätigungskräften, wie sie beispielsweise beim Einschneiden des Rotorrandes auftreten, zu Verformungen des Rotors und in Folge zu Unwuchten im Betrieb kommen. Dies kann mit dem Aufbringen der Trennstrukturen durch ein nicht mechanisches Fertigungsverfahren nun vermieden werden.The object is solved with the features of the independent claims. In a method for manufacturing a rotor cup for an open-end spinning rotor, in which a front edge of the rotor cup is provided with separating structures for interrupting and preparing a yarn end for piecing, it is provided that the separating structures are applied by a non-mechanical manufacturing process. In the context of the present invention, a non-mechanical manufacturing method is understood as meaning a method in which the separating structures are introduced without pressure, ie without the application of forces to the rotor cup during the production of the separating structures. With such a non-mechanical or pressureless manufacturing method, the separating structures can be introduced into the edge of the open-end spinning rotor in a particularly gentle manner, without deforming or even damaging it. Due to the very high speeds of up to 180,000 rpm at which today's open-end spinning rotors rotate, even when only small actuation forces are applied, such as those that occur when cutting the rotor edge, deformation of the rotor and subsequent imbalances can occur come into operation. This can now be avoided by applying the separating structures using a non-mechanical manufacturing process.
Besonders vorteilhaft ist es dabei, wenn die Trennstrukturen durch ein nichtmechanisches Abtragungsverfahren aufgebracht werden, da die Trennstrukturen hierdurch fest mit der Rotortasse bzw. dem offenen Rand der Rotortasse verbunden sind. Mittels derartiger nichtmechanischer Fertigungsverfahren ist es möglich, die Trennstrukturen in Form einer Mikroprofilierung mit einer Profiltiefe von weniger als 100 µm aufzubringen. Vorteilhaft dabei ist es, dass durch das nichtmechanische Abtragen bzw. Beschichten die Kanten der Trennstrukturen vergleichsweise scharfkantig ausgebildet werden können. Die scharfkantigen Trennstrukturen können daher das zum Anspinnen vorzubereitende Garnende besonderes wirkungsvoll auffräsen und zuverlässig durchtrennen.It is particularly advantageous if the separating structures are applied by a non-mechanical removal method, since the separating structures are thereby firmly connected to the rotor cup or the open edge of the rotor cup. Using such non-mechanical manufacturing processes, it is possible to apply the separating structures in the form of microprofiling with a profile depth of less than 100 μm. It is advantageous here that the edges of the separating structures can be formed with comparatively sharp edges as a result of the non-mechanical removal or coating. The sharp-edged separation structures can therefore effectively mill and reliably cut the yarn end to be prepared for piecing.
Bei einer Rotortasse für einen Offenend-Spinnrotor, die eine innere Rotorwand und eine äußere Rotorwand, einen Rotorboden sowie eine dem Rotorboden gegenüberliegenden Öffnung aufweist und bei der ein stirnseitiger Rand der Rotortasse mit Trennstrukturen zum Unterbrechen und Vorbereiten eines Garnendes zum Anspinnen versehen ist, ist es vorgesehen, dass die Trennstrukturen eine Oberfläche mit einem Mikroprofil aufweisen, d.h. einem Profil, dessen Profiltiefe weniger als 100 µm beträgt. Ein derartiges Mikroprofil wird mit den beschriebenen nichtmechanischen Verfahren aufgebracht. Zudem ist mittels eines derartigen Mikroprofils eine besonders garnschonende und dennoch effektive Garnendenvorbereitung möglich. Besonders vorteilhaft bei einem solchen Mikroprofil ist es weiterhin, dass die Gefahr eines Hängenbleibens von Fasern nach der Garnendenpräparation reduziert ist.In a rotor cup for an open-end spinning rotor, which has an inner rotor wall and an outer rotor wall, a rotor base and an opening opposite the rotor base, and in which a front edge of the rotor cup is provided with separating structures for interrupting and preparing a yarn end for piecing, it is provided that the separating structures have a surface with a microprofile, ie a profile whose profile depth is less than 100 microns. Such a microprofile is applied using the non-mechanical methods described. In addition, by means of such a microprofile, yarn end preparation that is particularly gentle on the yarn and yet effective is possible. It is also particularly advantageous with such a microprofile that the risk of fibers getting caught after the yarn end preparation is reduced.
Die Profiltiefe des Mikroprofils beträgt dabei vorzugsweise weniger als 50 µm und vorzugsweise mehr als 5 µm. Vorteilhaft ist es bei der Rotortasse weiterhin, wenn das Mikroprofil unregelmäßig ausgebildet ist. Mittels eines solchen unregelmäßigen Mikroprofils ist es in besonders vorteilhafter Weise möglich, eine erfolgreiche Garnendenpräparation für verschiedene Garnnummern und für verschiedene Rohmaterialien zu gewährleisten. Unter einem unregelmäßigen Mikroprofil wird dabei im Rahmen der vorliegenden Anmeldung ein Profil verstanden, dessen Höhe bzw. Tiefe, also der Abstand zwischen Hochpunkten und Tiefpunkten des Profils, jeweils variiert oder dessen Hochpunkte und/oder Tiefpunkte in ungleichen Abständen zueinander angeordnet sind.The profile depth of the microprofile is preferably less than 50 μm and preferably more than 5 μm. In the case of the rotor cup, it is also advantageous if the microprofile is irregular. By means of such an irregular microprofile, it is possible in a particularly advantageous manner to ensure successful yarn end preparation for different yarn counts and for different raw materials. In the context of the present application, an irregular microprofile is understood to be a profile whose height or depth, i.e. the distance between high points and low points of the profile, varies in each case or whose high points and/or low points are arranged at unequal distances from one another.
Ebenso ist es bei der Rotortasse vorteilhaft, wenn die Trennstrukturen in Form von Vertiefungen ausgebildet sind. Diese können, wie zuvor beschrieben, durch ein nichtmechanisches Abtragungsverfahren in besonders vorteilhafter Weise eingebracht werden. Möglich ist es aber auch, die Trennstrukturen in Form von Erhöhungen auszubilden. Hierzu ist es beispielsweise möglich, den offenen Rand der Rotortasse partiell mit einer Beschichtung zu versehen.In the case of the rotor cup, it is also advantageous if the separating structures are designed in the form of depressions. As described above, these can can be introduced in a particularly advantageous manner by a non-mechanical removal process. However, it is also possible to form the separating structures in the form of elevations. For this purpose it is possible, for example, to partially provide the open edge of the rotor cup with a coating.
Sollen die Trennstrukturen in Form von Vertiefungen vorgesehen werden, so ist es vorteilhaft, wenn die Trennstrukturen durch Laserabtragen aufgebracht werden. Durch Laserabtragen lässt sich ein Mikroprofil mit einer hohen Unregelmäßigkeit bzw. einer örtlich stark unterschiedlichen Abtragung erzeugen, die besonders vorteilhaft mit verschiedensten Applikationen eingesetzt werden kann. Es ist hierdurch nicht erforderlich, verschiedene Offenend-Spinnrotoren mit unterschiedlichen Trennstrukturen bereitzuhalten.If the separating structures are to be provided in the form of depressions, it is advantageous if the separating structures are applied by laser ablation. Laser ablation can be used to produce a microprofile with a high level of irregularity or ablation that varies greatly locally, which can be used particularly advantageously with a wide variety of applications. As a result, it is not necessary to have different open-end spinning rotors with different separating structures on hand.
Nach einer anderen Ausführung ist es vorteilhaft, wenn die Trennstrukturen durch ein elektrochemisches Abtragungsverfahren aufgebracht werden. Auch hierdurch ist es möglich, ein technologisch günstiges Mikroprofil, das für verschiedenste Anwendungen geeignet ist, zu erzeugen.According to another embodiment, it is advantageous if the separating structures are applied using an electrochemical removal process. This also makes it possible to produce a technologically favorable microprofile that is suitable for a wide variety of applications.
Vorteilhaft ist es, wenn die Trennstrukturen in Form von mehreren beabstandet zueinander, vorzugsweise äquidistant beabstandet zueinander, angeordneten Vertiefungen aufgebracht werden. Ebenso ist es bei der Rotortasse vorteilhaft, wenn der Rand mit mehreren beabstandet zueinander angeordneten Trennstrukturen, insbesondere Vertiefungen, versehen ist. Durch die Anordnung mehrerer Trennstrukturen nebeneinander kann die Durchtrennung des Garns auch dann sichergestellt werden, wenn der Spinnrotor nur eine oder sogar nur einen Teil einer Umdrehung ausführt. Der Rand der Rotortasse erhält hierdurch eine schleifende Wirkung, die aufgrund des Mikroprofils dennoch ein schonendes Öffnen der Fasern am Garnende ermöglicht.It is advantageous if the separating structures are applied in the form of a plurality of depressions which are spaced apart from one another, preferably equidistantly spaced apart from one another. It is also advantageous in the case of the rotor cup if the edge is provided with a plurality of separating structures, in particular depressions, arranged at a distance from one another. By arranging several separating structures next to one another, the severing of the yarn can also be ensured when the spinning rotor is only performing one revolution or even only part of a revolution. This gives the edge of the rotor cup a grinding effect, which, thanks to the micro-profile, nevertheless allows the fibers at the end of the yarn to be opened gently.
Bei dem Verfahren zur Herstellung der Rotortasse ist es weiterhin vorteilhaft, wenn die Rotortasse durch Drehen hergestellt wird, wobei das Drehen der Rotortasse und das Aufbringen der Trennstrukturen im selben Fertigungsgang erfolgen. Insbesondere beim Aufbringen der Trennstrukturen durch Laserabtragen ist es beispielsweise möglich, die Laservorrichtung an der Drehbank fest anzuordnen und den Laser auf den Rand der Rotortasse zu richten. Durch Weiterdrehen der Rotortasse jeweils um einen bestimmten Drehwinkel ist es dabei in einfacher Weise möglich, mehrere Trennstrukturen in beliebigen Abständen auf die Rotortasse aufzubringen.In the method for producing the rotor cup, it is also advantageous if the rotor cup is produced by turning, the turning of the rotor cup and the application of the separating structures taking place in the same production step. In particular when applying the separating structures by laser removal, it is possible, for example, to fix the laser device to the lathe and direct the laser at the edge of the rotor cup. By rotating the rotor cup further by a specific angle of rotation, it is possible in a simple manner to apply a plurality of separating structures to the rotor cup at any spacing.
Weiterhin ist es bei dem Verfahren vorteilhaft, wenn die Rotortasse mit einer Beschichtung, insbesondere mit einer Nickel-Diamant-Beschichtung versehen wird. Die Rotortasse ist hierdurch besonders verschleißbeständig. Dabei ist es wiederum vorteilhaft, wenn die Trennstrukturen nur in die Beschichtung eingebracht werden. Das Garn hat somit auch im Bereich der Trennstrukturen nur mit der widerstandsfähigen Beschichtung Kontakt, so dass eine vorzeitige Abnutzung der Rotortasse hierdurch vermieden werden kann.Furthermore, it is advantageous in the method if the rotor cup is provided with a coating, in particular with a nickel-diamond coating. This makes the rotor cup particularly wear-resistant. In this case, it is in turn advantageous if the separating structures are only introduced into the coating. The yarn is therefore only in contact with the resistant coating in the area of the separating structures, so that premature wear of the rotor cup can be avoided as a result.
Bei der Rotortasse ist es weiterhin vorteilhaft, wenn die Trennstrukturen über den gesamten Umfang der Rotortasse verteilt angeordnet sind. Hierdurch kann eine Durchtrennung und Vorbereitung des Garnendes unabhängig von einer Position des Spinnrotors bzw. unabhängig von einem Drehwinkel des Spinnrotors, welchen er während der Garnendenvorbereitung ausführt, erreicht werden. Zugleich kann hierdurch auch eine besonders gleichmäßige und reproduzierbare Garnendenvorbereitung erzielt werden.In the case of the rotor cup, it is also advantageous if the separating structures are distributed over the entire circumference of the rotor cup. As a result, the yarn end can be severed and prepared independently of a position of the spinning rotor or independently of an angle of rotation of the spinning rotor, which it executes during the preparation of the yarn ends. At the same time, a particularly uniform and reproducible yarn end preparation can be achieved in this way.
Besonders vorteilhaft ist es dabei, wenn die Trennstrukturen eine Breite von wenig als 0,5 mm, vorzugsweise weniger als 0,3 mm und besonders bevorzugt von weniger als 0,2 mm aufweisen.It is particularly advantageous if the separating structures have a width of less than 0.5 mm, preferably less than 0.3 mm and particularly preferably less than 0.2 mm.
Weiterhin ist es vorteilhaft, wenn die Trennstrukturen eine Tiefe oder eine Höhe von weniger als 100 µm, vorzugsweise von weniger als 70 µm und besonders bevorzugt von weniger als 50 µm aufweisen. Hierdurch wird eine feine Profilierung der Oberfläche des Randes der Rotortasse erreicht, welche eine gute und zuverlässige Garnendenpräparation sicherstellt und zugleich die mechanischen Eigenschaften der Rotortasse nicht beeinflusst. Ebenso wird auch durch die feinen Trennstrukturen mit einer Breite von weniger als 1 mm und bevorzugt weniger als 0,3 mm eine sehr feine Oberflächenstrukturierung erreicht, welche den Rundlauf der Rotortasse nicht beeinträchtigt.Furthermore, it is advantageous if the separating structures have a depth or a height of less than 100 μm, preferably less than 70 μm and in particular preferably have less than 50 microns. This achieves a fine profiling of the surface of the edge of the rotor cup, which ensures good and reliable yarn end preparation and at the same time does not affect the mechanical properties of the rotor cup. Likewise, the fine separating structures with a width of less than 1 mm and preferably less than 0.3 mm also result in a very fine surface structuring, which does not impair the concentricity of the rotor cup.
Daneben ist es vorteilhaft, wenn die Trennstrukturen, insbesondere die Vertiefungen, einen Abstand zwischen 0,2 mm und 1,5 mm, vorzugsweise 0,2 mm bis 1,0 mm und besonders bevorzugt von 0,3 mm bis 0,8 mm zueinander aufweisen. Sind die Trennstrukturen in einem derartigen Abstand angeordnet, so ergibt sich eine günstigste schleifende Wirkung. Es hat sich gezeigt, dass ein Abstand zwischen benachbarten Trennstrukturen mit den genannten Maßen in besonderem Maße für verschiedenste Garnarten und Garnnummern geeignet ist. Es ist jedoch auch möglich, die schleifende Wirkung auf den Faden durch den Abstand der Trennstrukturen zu beeinflussen, so dass je nach Abstand der Trennstrukturen der Offenend-Spinnrotor entweder für feinere oder für gröbere Garne oder für bestimmte Materialen besonders geeignet ist.In addition, it is advantageous if the separating structures, in particular the depressions, have a distance of between 0.2 mm and 1.5 mm, preferably 0.2 mm to 1.0 mm and particularly preferably 0.3 mm to 0.8 mm from one another exhibit. If the separating structures are arranged at such a distance, the result is a favorable rubbing effect. It has been shown that a distance between adjacent separating structures with the stated dimensions is particularly suitable for a wide variety of yarn types and yarn counts. However, it is also possible to influence the grinding effect on the thread by the distance between the separating structures, so that depending on the distance between the separating structures, the open-end spinning rotor is particularly suitable either for finer or for coarser yarns or for certain materials.
Nach einer Weiterbildung der Erfindung ist es vorteilhaft, wenn die Trennstrukturen bis in die innere Rotorwand und/oder bis in die äußere Rotorrwand hineinreichen. Die Sicherheit der Garndurchtrennung und Garnvorbereitung kann hierdurch erhöht werden, da auch dann noch eine Durchtrennung und Garnendenvorbereitung erfolgen kann, wenn das Garn in einem Winkel über die Kante des offenen Randes der Rotortasse geführt wird und somit nicht den flachen Rand direkt überstreicht.According to a development of the invention, it is advantageous if the separating structures reach into the inner rotor wall and/or into the outer rotor wall. The safety of yarn cutting and yarn preparation can be increased as a result, since cutting and yarn end preparation can still take place if the yarn is guided at an angle over the edge of the open edge of the rotor cup and thus does not sweep over the flat edge directly.
Weitere Vorteile der Erfindung werden anhand der nachfolgend dargestellten Ausführungsbeispiele beschrieben. Es zeigen:
- Figur 1
- eine schematische Schnittdarstellung einer Offenendspinnvorrichtung mit einem Spinnrotor während der Garnendenvorbereitung,
Figur 2- eine Draufsicht auf den offenen Rand der Rotortasse nach einer ersten Ausführung,
Figur 3- eine Draufsicht auf den offenen Rand einer Rotortasse nach einer zweiten Ausführung,
Figur 4- eine schematische, abgebrochen dargestellte, perspektivische Ansicht auf den offenen Rand einer Rotortasse,
Figur 5- eine schematische Querschnittsdarstellung durch eine Trennstruktur nach einer ersten Ausführung sowie
Figur 6- eine schematische Querschnittsdarstellung einer Trennstruktur nach einer zweiten Ausführung.
- figure 1
- a schematic sectional view of an open-end spinning device with a spinning rotor during yarn end preparation,
- figure 2
- a top view of the open edge of the rotor cup according to a first embodiment,
- figure 3
- a plan view of the open edge of a rotor cup according to a second embodiment,
- figure 4
- a schematic, broken perspective view of the open edge of a rotor cup,
- figure 5
- a schematic cross-sectional view through a separation structure according to a first embodiment, and
- figure 6
- a schematic cross-sectional representation of a separation structure according to a second embodiment.
Die Rotortasse 10 des Offenend-Spinnrotors 1 weist in ebenfalls üblicher Weise eine innere Rotorwand 12 auf, auf welche die zu verspinnenden Fasern aufgespeist werden, eine Fasersammelrille 15, in welcher die Fasern sich in Form eines Faserrings anlagern und in das Ende des bereits produzierten Garns 5 eingebunden werden, sowie einen Rotorboden 14, an welchem die Rotortasse 10 mit dem Rotorschaft 9 verbunden ist. Gegenüberliegend des Rotorbodens 14 weist die Rotortasse 10 eine Öffnung 11 auf, in welche im regulären Spinnbetrieb ein Ansatz des Deckels 4, welcher die Abzugsdüse 6 trägt, hineinragt, so dass das Garn 5 über die Abzugsdüse 6 und das Abzugsröhrchen 7 abgezogen werden kann. Weiterhin weist die Rotortasse 10 noch eine äußere Rotorwand 13 sowie einen stirnseitigen Rand 16 auf, welcher sich zwischen der äußeren Rotorwand 13 und der inneren Rotorwand 12 erstreckt und zusammen mit der inneren Rotorwand 12 die Öffnung 11 begrenzt.The
Kommt es nun während der Produktion des Garns 5 zu einem Bruch oder einem Qualitätsschnitt, so muss ein Garnende 5a zum Wiederanspinnen definiert abgelängt und vorbereitet werden, damit es anschließend in die Fasersammelrille 15 der Rotortasse 10 zurückgeführt und wieder angesponnen werden kann. Das Durchtrennen des Garns 5 sowie das Vorbereiten des Garnendes 5a zum Wiederanspannen erfolgt dabei an dem stirnseitigen Rand 16. Hierzu wird das Garnende 5 durch das Abzugsröhrchen 7 und die Abzugsdüse 6 in das Rotorgehäuse 3 geführt und in den Unterdruckkanal 8 eingesaugt, wo es durch die Wirkung des Unterdrucks festgehalten wird. Wie der
Abhängig von den geometrischen Gegebenheiten der Spinnvorrichtung 2 und je nach Verfahrensführung kann dabei das Garnende 5a dem bereits rotierenden Spinnrotor 1 zugeführt werden oder das Garnende 5a kann zunächst auf den stirnseitigen Rand 16 des noch stehenden Offenend-Spinnrotors 1 aufgelegt werden und der Offenend-Spinnrotor 1 erst dann in Rotation versetzt werden.Depending on the geometric conditions of the
Die Trennstrukturen17 (siehe
Wie der
Das Mikroprofil 20 ist in vorliegendem Beispiel unregelmäßig ausgebildet und weist einzelne Spitzen auf, welche unterschiedlich hoch sind und auch an unterschiedlichen Stellen bezogen auf die Breite B der Trennstruktur 17 angeordnet sind. Ebenso sind die einzelnen Spitzen auch in Längsrichtung der Trennstruktur 17 in unregelmäßiger Folge angeordnet, wie in der
Die vorliegende Rotortasse 10 ist weiterhin mit einer Beschichtung 19 versehen, welche auf das Grundmaterial 21 der Rotortasse 10 aufgebracht ist. Die Trennstrukturen 17 bzw. das Mikroprofil 20 sind dabei nur in die Beschichtung 19 eingebracht und reichen nicht bis in das Grundmaterial 21 hinein. Hierdurch wird besonders vorteilhaft erreicht, dass auch innerhalb der Trennstruktur 17 die verschleißmindernde Wirkung der Beschichtung 19 noch vorhanden ist und es somit nicht zu einer übermäßigen Abnutzung im Bereich der Trennstruktur 17 kommt.The
Die Beschichtung 19 ist vorzugsweise als Nickel-Diamant-Beschichtung ausgebildet. Je nach Ausführung der Rotortasse 10 wäre es aber natürlich auch möglich, die Trennstrukturen 17 direkt in das Grundmaterial 21 der Rotortasse 10 einzubringen. Weiterhin sind natürlich auch andere Beschichtungen oder Oberflächenbehandlungen der Rotortasse 10 möglich.The
Weiterhin ist es nach einer nicht gezeigten Ausführung auch möglich, dass die Trennstruktur 17 zwar in Form einer Vertiefung 18 ausgebildet ist, das Mikroprofil 20 jedoch einen höchsten Punkt oberhalb der Oberfläche des Randes 16 aufweist. Die Profiltiefe PT wäre in diesem Fall größer als die Tiefe T der Vertiefung. Ebenso wäre es auch im Falle einer Erhöhung 22 möglich, dass ein tiefster Punkt des Mikroprofils 20 dennoch unterhalb der Oberfläche des Randes 16 liegt, so dass die Profiltiefe PT größer wäre als die Höhe H der Erhöhung.Furthermore, according to an embodiment that is not shown, it is also possible for the separating
Die Erfindung ist nicht auf die dargestellten Ausführungsbeispiele beschränkt. Abwandlungen und Kombinationen im Rahmen der Patentansprüche fallen ebenfalls unter die Erfindung.The invention is not limited to the exemplary embodiments shown. Modifications and combinations within the scope of the patent claims also fall under the invention.
- 11
- Offenend-Spinnrotoropen-end spinning rotor
- 22
- Offenend-Spinnvorrichtungopen-end spinning device
- 33
- Rotorgehäuserotor case
- 44
- Deckellid
- 55
- Garnyarn
- 5a5a
- Garnendeyarn end
- 66
- Abzugsdüsetrigger nozzle
- 77
- Abzugsröhrchenvent tube
- 88th
- Unterdruckkanalvacuum channel
- 99
- Rotorschaftrotor shaft
- 1010
- Rotortasserotor cup
- 1111
- Öffnungopening
- 1212
- Innere Rotorwandinner rotor wall
- 1313
- Äußere RotorwandOuter rotor wall
- 1414
- Rotorbodenrotor bottom
- 1515
- Fasersammelrillefiber collection groove
- 1616
- Stirnseitiger Rand der Öffnung der RotortasseFront edge of the opening of the rotor cup
- 1717
- Trennstrukturenseparation structures
- 1818
- Vertiefungdeepening
- 1919
- Beschichtungcoating
- 2020
- Mikroprofilmicro profile
- 2121
- Grundmaterialbase material
- 2222
- Erhöhungincrease
- 2323
- Kanteedge
- PTpt
- Profiltiefetread depth
- BB
- Breite der TrennstrukturenWidth of the separation structures
- AA
- Abstand der TrennstrukturenDistance of the separation structures
- TT
- Tiefe der Trennstrukturendepth of the separation structures
- HH
- Höhe der TrennstrukturenHeight of the separation structures
Claims (15)
- Method for producing a rotor cup (10) for an open-end spinning rotor (1), with which a front-side rim (16) of the rotor cup (10) is provided with separating structures (17) for breaking up and preparing a yarn end (5a) for piecing, characterized in that the separating structures (17) are applied by a non-mechanical manufacturing method, in particular by a non-mechanical ablation method, in the form of microprofiling with a profile depth (PT) of less than 100 µm can be applied..
- Method according to the previous claim, characterized in that the separating structures (17) are applied by means of laser ablation.
- Method according to one of the preceding claims, characterized in that the separating structures (17) are applied by an electro-chemical ablation method.
- Method according to one of the preceding claims, characterized in that the separating structures (17) are applied in the form of a multiple number of depressions (18) that are arranged in a manner spaced apart from each other, preferably equidistantly from each other.
- Method according to one of the preceding claims, characterized in that the rotor cup (10) is produced by turning, whereas the turning of the rotor cup (10) and the applying of the separating structures (17) take place in the same production process.
- Method according to one of the preceding claims, characterized in that the rotor cup (10) is provided with a coating (19), in particular with a nickel-diamond coating, and the separating structures (17) are preferably introduced only in the coating.
- Rotor cup (10) for an open-end spinning rotor (1) with an inner rotor wall (12) and an outer rotor wall (13), a rotor bottom (14) and a front-side rim (16) opposite the rotor bottom (14), which is provided with separating structures (17) for breaking up and preparing a yarn end (5a) for piecing, characterized in that the separating structures (17) feature a surface with a micro-profile (20) having a profile depth of less than 100 µm.
- Rotor cup (10) according to the preceding claim, characterized in that the profile depth (PT) of the micro-profile (20) amounts to less than 50 microns and preferably more than 5 microns.
- Rotor cup (10) according to one of the preceding device claims, characterized in that the micro-profile (20) is formed to be irregular.
- Rotor cup (10) according to one of the preceding device claims, characterized in that the rim (16) of the rotor cup (10) is provided with a multiple number of separating structures (17) that are arranged in a manner spaced apart from each other, preferably equidistantly from each other, in particular with separating structures (17) in the form of depressions (18).
- Rotor cup (10) according to one of the preceding device claims, characterized in that the separating structures (17) are arranged in a manner distributed over the entire circumference of the rotor cup (10).
- Rotor cup (10) according to one of the preceding device claims, characterized in that the separating structures (17) feature a width (B) of less than 0.5 mm, preferably less than 0.3 mm and particularly preferably less than 0.2 mm and/or that the separating structures (17) feature a depth (T) or height (H) of less than 100 µm, preferably less than 70 µm and particularly preferably less than 50 µm.
- Rotor cup (10) according to one of the preceding device claims, characterized in that the separating structures (17), in particular the depressions (18), feature a spacing (A) between 0.2 mm and 1.5 mm, preferably 0.2 mm to 1.0 mm and particularly preferably 0.3 mm to 0.8 mm relative to each another.
- Rotor cup (10) according to one of the preceding device claims, characterized in that the separating structures (17) extend into the inner rotor wall (12) and/or into the outer rotor wall (13).
- Rotor cup (10) according to one of the preceding device claims, characterized in that the rotor cup (10) features a coating (19), in particular a nickel-diamond coating, whereas the separating structures (17) are preferably introduced only in the coating (19).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017113029.2A DE102017113029A1 (en) | 2017-06-13 | 2017-06-13 | Method for producing a rotor cup for an open-end spinning rotor and rotor cup for an open-end spinning rotor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3415670A1 EP3415670A1 (en) | 2018-12-19 |
EP3415670B1 true EP3415670B1 (en) | 2022-02-23 |
Family
ID=62562983
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18176280.8A Active EP3415670B1 (en) | 2017-06-13 | 2018-06-06 | Rotor socket for an open-end spinning rotor and method for manufacturing a rotor socket for an open-end spinning rotor |
Country Status (5)
Country | Link |
---|---|
US (1) | US10753013B2 (en) |
EP (1) | EP3415670B1 (en) |
CN (1) | CN109082736A (en) |
DE (1) | DE102017113029A1 (en) |
TW (1) | TWI787273B (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19509742A1 (en) * | 1995-03-17 | 1996-09-19 | Fritz Stahlecker | Open end spinning rotor having increased working life |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3429511A1 (en) * | 1984-08-10 | 1986-02-20 | W. Schlafhorst & Co, 4050 Mönchengladbach | SPINNING ROTOR FOR A OE SPINNING MACHINE AND METHOD FOR PRODUCING THE SPINNING ROTOR |
DE3810775C2 (en) | 1988-03-30 | 1996-05-23 | Schlafhorst & Co W | Spinning rotor |
DE4101680A1 (en) * | 1991-01-22 | 1992-07-23 | Winfried Heinzel | Sliver loosening roller - is cleaned and coated with wear resistant layer and wear and corrosion resistant layer |
DE19651419A1 (en) * | 1996-12-11 | 1998-06-18 | Fritz Stahlecker | Open end spinning rotor |
DE19713359B4 (en) * | 1997-03-29 | 2005-12-08 | Saurer Gmbh & Co. Kg | Spinning rotor for an open-end spinning machine and method for its coating |
DE19822265B4 (en) * | 1997-06-13 | 2006-07-06 | Rieter Ingolstadt Spinnereimaschinenbau Ag | Open-end spinning rotor and method for its production |
DE19947547A1 (en) * | 1999-10-02 | 2001-04-05 | Schlafhorst & Co W | Spinning rotor has surfaces with a coating consisting of an intermediate layer which is free from hard material between two hard material-containing layers in contact with the fibers and thread |
DE10334758B4 (en) * | 2002-08-19 | 2013-12-05 | Rieter Ingolstadt Gmbh | Turntable of a spinning machine and spinning machine |
CN201381399Y (en) * | 2009-04-03 | 2010-01-13 | 中国科学院金属研究所 | Cup for textile machinery |
CZ2011773A3 (en) | 2011-11-28 | 2013-01-09 | Rieter Cz S.R.O. | Method of preparing end of yarn for spinning on rotor spinning machines and spinning rotor per se |
DE102015103229A1 (en) * | 2015-03-05 | 2016-09-08 | Maschinenfabrik Rieter Ag | Rotor plate, spinning rotor and method for producing a rotor cup of a spinning rotor |
DE102015007819A1 (en) * | 2015-06-18 | 2016-12-22 | Saurer Germany Gmbh & Co. Kg | Spinning rotor for an open-end spinning device operating at high rotor speeds |
DE102015114731A1 (en) * | 2015-09-03 | 2017-03-09 | Maschinenfabrik Rieter Ag | Open-end spinning rotor with a rotor cup made of heat-treatable steel material |
DE102015117204A1 (en) | 2015-10-08 | 2017-04-13 | Rieter Ingolstadt Gmbh | Process for preparing a yarn end for piecing on a rotor spinning device of a rotor spinning machine and rotor spinning machine |
-
2017
- 2017-06-13 DE DE102017113029.2A patent/DE102017113029A1/en active Pending
-
2018
- 2018-05-11 CN CN201810450268.3A patent/CN109082736A/en active Pending
- 2018-05-28 TW TW107118169A patent/TWI787273B/en active
- 2018-06-06 EP EP18176280.8A patent/EP3415670B1/en active Active
- 2018-06-12 US US16/005,833 patent/US10753013B2/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19509742A1 (en) * | 1995-03-17 | 1996-09-19 | Fritz Stahlecker | Open end spinning rotor having increased working life |
Also Published As
Publication number | Publication date |
---|---|
US10753013B2 (en) | 2020-08-25 |
DE102017113029A1 (en) | 2018-12-13 |
CN109082736A (en) | 2018-12-25 |
TW201903230A (en) | 2019-01-16 |
US20180355522A1 (en) | 2018-12-13 |
EP3415670A1 (en) | 2018-12-19 |
TWI787273B (en) | 2022-12-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2927908B1 (en) | Chopper blade and device and method for its manufacture | |
DE19738382A1 (en) | Open end spinner yarn take off | |
DE2016469C3 (en) | Open-end spinning device | |
DE2504401A1 (en) | METHOD OF MANUFACTURING A ROTOR FOR AN OPEN-END SPINNING MACHINE | |
DE102005050102B4 (en) | Open-end spinning device with a fiber channel of several channel components | |
EP3415670B1 (en) | Rotor socket for an open-end spinning rotor and method for manufacturing a rotor socket for an open-end spinning rotor | |
DE2910921A1 (en) | ROTOR OF AN OPEN-END SPINNING MACHINE | |
DE3730295A1 (en) | SET FOR A DISCONNECTING ROLLER WITH A VARIETY OF TEETH | |
DE4101680A1 (en) | Sliver loosening roller - is cleaned and coated with wear resistant layer and wear and corrosion resistant layer | |
DE19746536C2 (en) | Ring spinning spindle with a cutting knife | |
DE10249905A1 (en) | Set ring for an opening roller of an open-end spinning device | |
DE10393063B4 (en) | off nozzle | |
WO2017076846A1 (en) | Thread draw-off nozzle | |
EP1557491B1 (en) | Doctor knife and method for producing said knife | |
DE19755972B4 (en) | spinning device | |
DE19852931C1 (en) | Root canal instrument for dentist has screw formed cutters on tool with tapered tip | |
EP1993761A1 (en) | Process for the manufacture of rotationally symmetrical areas on a workpiece | |
DE102006021168B4 (en) | Thread-separating device and method for producing a thread-separating device | |
DE2329222C2 (en) | Opening device for an OE rotor spinning unit | |
DE102017124836A1 (en) | Opening roller and method for producing such an opening roller | |
EP1367155A2 (en) | Opening roller for an open-end spinning machine | |
DE19846770A1 (en) | Open-end spinner rotor | |
DE2448953C2 (en) | Open-end spinning unit with a spinning rotor | |
DE19917181B4 (en) | Spinning machine with compacting device | |
EP3210752A1 (en) | Trimmed rotating body |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20190614 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20211008 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: FRANK, ANDREAS Inventor name: LOOS, BERND Inventor name: KUEBLER, MARKUS |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502018008825 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1470541 Country of ref document: AT Kind code of ref document: T Effective date: 20220315 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG9D |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20220223 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220623 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220523 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220523 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220524 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220623 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502018008825 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
26N | No opposition filed |
Effective date: 20221124 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20220630 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20220606 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220606 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220630 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220606 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220630 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220630 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220606 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220630 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230329 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20230627 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: TR Payment date: 20230531 Year of fee payment: 6 Ref country code: AT Payment date: 20230622 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20230629 Year of fee payment: 6 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20180606 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220223 |