EP1757719A2 - Drawing frame for a spinning machine - Google Patents

Drawing frame for a spinning machine Download PDF

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Publication number
EP1757719A2
EP1757719A2 EP06013985A EP06013985A EP1757719A2 EP 1757719 A2 EP1757719 A2 EP 1757719A2 EP 06013985 A EP06013985 A EP 06013985A EP 06013985 A EP06013985 A EP 06013985A EP 1757719 A2 EP1757719 A2 EP 1757719A2
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EP
European Patent Office
Prior art keywords
lower roller
rollers
drives
segments
bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06013985A
Other languages
German (de)
French (fr)
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EP1757719B1 (en
EP1757719A3 (en
Inventor
Helmut Feuerlohn
Christoph Haase
Thomas Weide
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saurer Spinning Solutions GmbH and Co KG
Original Assignee
Oerlikon Textile GmbH and Co KG
Saurer GmbH and Co KG
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Publication date
Application filed by Oerlikon Textile GmbH and Co KG, Saurer GmbH and Co KG filed Critical Oerlikon Textile GmbH and Co KG
Publication of EP1757719A2 publication Critical patent/EP1757719A2/en
Publication of EP1757719A3 publication Critical patent/EP1757719A3/en
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Publication of EP1757719B1 publication Critical patent/EP1757719B1/en
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Classifications

    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H5/00Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70Constructional features of drafting elements
    • D01H5/86Aprons; Apron supports; Apron tensioning arrangements
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H1/00Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14Details
    • D01H1/20Driving or stopping arrangements
    • D01H1/22Driving or stopping arrangements for rollers of drafting machines; Roller speed control
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H5/00Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/56Supports for drafting elements

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 with ring spinning machines or with air-jet spinning machines.
  • the drafting systems differ, for example, in terms of the number of pairs of rollers, with respect to the structural design of their pendulum carrier or in terms of the formation of their lower rollers in some cases considerably.
  • machine-length lower rollers are usually driven by a strong, machine end side arranged in the drive frame of the textile machine drafting motor, which ensures via an intermediate reduction gear that the input, middle, and output lower rollers rotate at different speeds and forgive the submitted sliver.
  • a ring spinning machine which in each case has a plurality of relatively short, single-motor driven lower roller sections instead of machine-length lower rollers, which form the draw frames in conjunction with corresponding upper rollers.
  • the lower roller sections are designed as external rotor drives. That is, between two cheeks of the machine frame of the ring spinning machine, a bearing shaft is fixed in rotation, which carries the stator of the external rotor drive.
  • the electric rotor of the drive is arranged within a rotatable hollow roller, which is also supported via corresponding bearing points on the bearing axis.
  • On the hollow roller which in each case forms a lower roller section for a plurality of juxtaposed spinning station drafting systems, are the associated upper rollers, which are taken along frictionally engaged by the lower roller section during the spinning operation.
  • Draw frames for spinning machines are also by the DE 39 32 614 A1 known.
  • the individual drives of the lower roller segments are connected to a control device which can adjust the speed of the drives and thus the delay of the drafting system via a corresponding inverter.
  • the lower roller segments are either directly connected to one of the drives via a motor shaft or in each case connected via a drive belt to one of the drives.
  • the invention has for its object to provide a drafting system, designed as roller segments lower rollers in case of need, especially for changing the delay straps, are easily accessible or easily removable.
  • the drafting system according to the invention has the particular advantage that after opening the pendulum carrier, the lower roller drives including the associated roller segments can be removed without any problem in the direction of the pendulum carrier from their storage facilities. That is, for removal or installation of the motor driven sub-roller segments no tools or the like is needed.
  • Verzugsriemchen which are preferably arranged in the region of the lower roller segments of the middle lower roller, freely accessible and can be changed quickly and easily if necessary.
  • the storage facilities for the lower roller drives have receiving pockets and, for example, by means of bolts to a frame can be fixed, which in turn is attached to the machine frame of the air-spinning machine (claims 2). That is, during the spinning operation, the lower roller drives and thus the associated lower roller segments are exactly aligned, in their working positions and are thereby fixed by the closed pendulum carrier securely in the receiving pockets of the storage facilities. By opening the shuttle carrier, the lower roller drives are released and, together with their associated lower roller segments, can be easily lifted out of the storage facilities. The installation of the lower roller segments is just as easy.
  • the bottom roller drives are simply inserted from above into the open storage facilities and are immediately aligned correctly.
  • the inner dimensions of the receiving pockets of the storage facilities are matched to the outer contours of the lower roller drives.
  • the lower roller drives and thus the lower roller segments both safely with the pendulum carrier and during the spinning process, when the pendulum carrier is closed, safely and reliably positioned.
  • At least the middle lower roller is formed in several parts. That is, at least the middle lower roller consist of two lower roller segments, which in turn are non-rotatably connected to a lower roller drive and rotatable relative to each other. In this way, on the one hand, it is ensured that, if necessary, the middle bottom roller can be divided without any problem can be used to easily change the override aprons.
  • the relative movement of the lower roller segments to each other also allows a separate drive of the two drafting equipment sides. That is, in a yarn breakage, in which one side of the drafting system is stopped, the other side of the drafting system can remain in operation.
  • the drives of the lower roller segments of the input sub-roller and the drives of Under roller segments of the middle lower roller formed as stepper motors (claims 5).
  • stepper motors represent proven and cost-effective mass-produced components, which are also relatively easy to control, for example, also in terms of their speed. That is, via a corresponding, relatively simple control device, the desired delay of the drafting system can be accurately adjusted via the speeds of the input sub-roller and the center lower roller and corrected if necessary without much effort.
  • the lower roller segments each have a bearing stump in the region of their free end, which protrudes in the installed state of the lower roller segments in a bearing sleeve.
  • the bearing sleeve is equipped with rolling bearings on which the bearing stumps are supported.
  • Fig. 1 the drafting device 4 according to the invention is shown schematically in connection with an air-spinning machine 1.
  • Such textile machines generally have a plurality of workstations 2 arranged in series next to one another and at least one end of the air-spinning machine 1, a so-called end frame 13.
  • each of the working or spinning stations 2 of such an air-spinning machine 1 has a sliver source, for example a sliver can 3, a drafting device 4, an air-spinning device 5, a thread take-off device 6, a yarn cleaner 7 and a thread-changing device 8.
  • the Fadenchangier listening 8 ensures that the manufactured in the air spinning device 5 thread is wound in intersecting layers on a package 9.
  • the cheese 9 is, as usual, held in a (not shown) creel and is rotated by a (also not shown) coil drive.
  • the spinning stations 2 of the air-spinning machine 1 are supplied by an automatically operating operating rotor 10 which, guided on rails 11, 12, can be moved along the spinning stations 2.
  • the drafting units 4 usually, an input roller pair 20, a pair of intermediate rollers 21 and a pair of output rollers 23, wherein the pairs of rollers each drivable lower rollers 20A, 21A, 23A and 20 held in a pendulum carrier top rollers 20B, 21B , 23B exist.
  • the pendulum support 17 is limited movably mounted on a support rod 30 and can by means of a lever 29 in three possible positions a) "loaded", b) "relieved” and c) "folded” positioned.
  • the lower rollers 20A, 21A, 23A are respectively composed of lower roller segments 20A1, 20Ar; 21A1, 21Ar; 23A1, 23Ar together, which can be rotated by a lower roller drive 14 and 28, respectively.
  • the lower roller segments 20Al, 20Ar; 21Al, 2lAr; 23Al, 23Ar are rotatably connected to the motor shafts of the lower roller drives 14 and 28, which in turn are connected via supply and signal lines 22 to a power source, not shown, and also not shown control device.
  • the lower roller segments 20A1, 20Ar; 21A1, 21Ar; 23A1, 23Ar each have a bearing stub 25 in addition to a structured working surface 16 in the region of its free end.
  • these bearing stubs 25 are guided in bearing sleeves 24, which have roller bearings 26, preferably needle roller bearings.
  • delay straps 27 are also arranged which, as usual, are guided on deflection rails 31.
  • the lower roller drives 14 and 28 are easily interchangeable arranged in storage facilities 15, the screw bolts 32 at a frame 18 are fixed, which in turn is attached to the machine frame of the air-spinning machine 1.
  • the open receptacles 19 of the storage facilities 15 are so designed with respect to their inner dimensions on the contour of the lower roller drives 14, 28 that the lower roller drives 14, 28 immediately after positioning in the storage facilities 15 are exactly in their working position and can be fixed by closing the pendulum carrier 17 ,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

The unit has lower rollers that are designed as lower rolling segments (21Al, 21Ar), which are rotated over a single motor drive, and upper rollers that are mounted in a pendulum support. A pair of central rollers has lower roller drives (14) that are arranged together with the lower rollers in a support device such that the drives are easily taken out from the support device towards the pendulum support after releasing the pendulum support, which takes the upper rollers. The support devices have retainer cases and are fixed at a frame (18) by screw bolts.

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, zum Beispiel mit Ringspinnmaschinen oder mit Luftspinnmaschinen, sind Streckwerke in verschiedenen Ausführungsformen bekannt.
Die Streckwerke unterscheiden sich dabei beispielsweise hinsichtlich der Anzahl ihrer Walzenpaare, bezüglich der konstruktiven Ausgestaltung ihrer Pendelträger oder auch in Bezug auf die Ausbildung ihrer Unterwalzen zum Teil erheblich.
Draw frames in various embodiments are known in connection with spinning machines, for example with ring spinning machines or with air-jet spinning machines.
The drafting systems differ, for example, in terms of the number of pairs of rollers, with respect to the structural design of their pendulum carrier or in terms of the formation of their lower rollers in some cases considerably.

Insbesondere im Zusammenhang mit Ringspinnmaschinen sind beispielsweise Streckwerke mit maschinenlangen Unterwalzen weit verbreitet.
Diese maschinenlangen Unterwalzen werden in der Regel durch einen starken, maschinenendseitig im 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 Faserband verziehen.
In particular, in connection with ring spinning machines drafting systems with machine-length lower rollers are widely used.
These machine-length lower rollers are usually driven by a strong, machine end side arranged in the drive frame of the textile machine drafting motor, which ensures via an intermediate reduction gear that the input, middle, and output lower rollers rotate at different speeds and forgive the submitted sliver.

Solche maschinenlangen Unterwalzen weisen allerdings eine Reihe von Nachteilen auf.
Nicht nur die Lagerhaltung solcher langer Unterwalzen gestaltet sich oft etwas schwierig, auch eine Änderung der Verzugsverhältnisse der Streckwerke ist in der Regel mit einem erheblichen Aufwand verbunden.
However, such machine-length bottom rollers have a number of disadvantages.
Not only the storage of such long lower rollers is often somewhat difficult, even a change in the draft conditions of the drafting is usually associated with considerable effort.

Solche langen Unterwalzen sind während des Spinnbetriebes außerdem hohen Torsionsspannungen unterworfen und neigen zu Verdrehungen, was sich sehr negativ auf die Güte des eingestellten Verzugs auswirkt.Such long bottom rollers are also subjected during spinning operation high torsional stresses and tend to torsions, which has a very negative effect on the quality of the set delay.

Da bei diesen Unterwalzen auch die Montage bzw. Erneuerung der Verzugsriemchen, die vorzugsweise im Bereich der Mittelunterwalze angeordnet und einem relativ hohen Verschleiß unterworfen sind, sehr aufwendig ist, sind in der Vergangenheit bereits verschiedene Vorschläge unterbreitet worden, wie solche langen Unterwalzen ersetzt beziehungsweise so modifiziert werden können, dass die vorgenannten Nachteile nicht auftreten.Since in these lower rollers and the assembly or renewal of the Verzugsriemchen, which are preferably arranged in the region of the middle lower roller and a relatively high wear, is very expensive, various proposals have already been made in the past, such as such long lower rollers replaced or modified can be that the aforementioned disadvantages do not occur.

Zur Vermeidung hoher Torsionsspannungen in langen Unterwalzen ist in der DE 100 40 420 A1 beispielsweise vorgeschlagen worden, entweder jede dieser maschinenlangen Unterwalzen durch mehrere, entsprechend schwächere Motoren anzutreiben oder die Unterwalzen in mehrere, einzeln antreibbare Unterwalzenabschnitte aufzuteilen.
Gemäß einem in der DE 100 40 420 A1 dargestellten Ausführungsbeispiel sind beispielsweise, auf die gesamte Länge einer maschinenlangen Unterwalze verteilt, zwei oder drei Motoren angeordnet, die die Unterwalze gemeinsam antreiben.
Bei geteilten Unterwalzen ist für jeden der einzelnen Unterwalzenabschnitte jeweils ein eigener, separater Antrieb vorgesehen.
To avoid high torsional stresses in long lower rollers is in the DE 100 40 420 A1 For example, it has been proposed to either drive each of these machine-length lower rollers through a plurality of correspondingly weaker motors or to divide the lower rollers into a plurality of individually drivable lower roller sections.
According to one in the DE 100 40 420 A1 illustrated embodiment, for example, distributed over the entire length of a machine-length lower roller, two or three motors arranged to drive the lower roller together.
In the case of divided lower rollers, a separate, separate drive is provided for each of the individual lower roller sections.

Mit den in der DE 100 40 420 A1 beschrieben Einrichtungen gelingt es zwar, die Torsionsspannungen in den Unterwalzen, insbesondere bei sehr langen Ringspinnmaschinen, in vertretbaren Grenzen zu halten, die anderen Nachteile derartiger Unterwalzen, insbesondere was den Montageaufwand beim Einbau oder beim Wechseln der im Bereich der Mittelunterwalzen angeordneten Verzugsriemchen betrifft, konnten mit diesen Einrichtungen allerdings nicht beseitigt werden.With the in the DE 100 40 420 A1 Although it is possible to keep the torsional stresses in the lower rollers, especially in very long ring spinning machines, within reasonable limits, the other disadvantages of such lower rollers, in particular the installation effort during installation or when changing the arranged in the middle of the lower rollers However, with these facilities could not be eliminated.

In der DE 39 41 823 C1 ist eine Ringspinnmaschine beschrieben, die anstelle von maschinenlangen Unterwalzen jeweils eine Vielzahl relativ kurzer, einzelmotorisch angetriebener Unterwalzenabschnitte aufweist, welche in Verbindung mit entsprechenden Oberwalzen die Streckwerke bilden.
Die Unterwalzenabschnitte sind dabei als Außenläuferantriebe ausgebildet.
Das heißt, zwischen zwei Wangen des Maschinengestells der Ringspinnmaschine ist drehfest eine Lagerachse festgelegt, die den Stator des Außenläuferantriebes trägt.
Der elektrische Rotor des Antriebes ist innerhalb einer rotierbaren Hohlwalze angeordnet, die außerdem über entsprechende Lagerstellen auf der Lagerachse abgestützt ist. Auf der Hohlwalze, die jeweils einen Unterwalzenabschnitt für mehrere, nebeneinander angeordnete Spinnstellenstreckwerke bildet, liegen die zugehörigen Oberwalzen auf, die während des Spinnbetriebes vom Unterwalzenabschnitt reibschlüssig mitgenommen werden.
In the DE 39 41 823 C1 a ring spinning machine is described, which in each case has a plurality of relatively short, single-motor driven lower roller sections instead of machine-length lower rollers, which form the draw frames in conjunction with corresponding upper rollers.
The lower roller sections are designed as external rotor drives.
That is, between two cheeks of the machine frame of the ring spinning machine, a bearing shaft is fixed in rotation, which carries the stator of the external rotor drive.
The electric rotor of the drive is arranged within a rotatable hollow roller, which is also supported via corresponding bearing points on the bearing axis. On the hollow roller, which in each case forms a lower roller section for a plurality of juxtaposed spinning station drafting systems, are the associated upper rollers, which are taken along frictionally engaged by the lower roller section during the spinning operation.

Die DE 39 41 823 A1 enthält allerdings keine näheren Hinweise, wie die Lagerstellen in den Wangen der Ringspinnmaschine ausgebildet sind.
Das heißt, es ist in diesem Schutzrecht nirgends beschrieben, ob die Lagerachsen beispielsweise stationär oder auswechselbar angeordnet sind.
The DE 39 41 823 A1 However, there is no detailed information on how the bearings are formed in the cheeks of the ring spinning machine.
That is, it is nowhere described in this patent, whether the bearing axles are arranged, for example, stationary or interchangeable.

Streckwerke für Spinnmaschinen, die jeweils einzelmotorisch antreibbare Unterwalzensegmente aufweisen, sind auch durch die DE 39 32 614 A1 bekannt.Draw frames for spinning machines, each having individually motor driven lower roller segments, are also by the DE 39 32 614 A1 known.

Bei diesem bekannten Streckwerk sind die einzelnen Antriebe der Unterwalzensegmente an eine Steuereinrichtung angeschlossen, die über einen entsprechenden Inverter die Drehzahl der Antriebe und damit den Verzug des Streckwerkes einstellen kann.
Die Unterwalzensegmente sind dabei entweder über eine Motorwelle direkt mit einem der Antriebe verbunden oder jeweils über einen Antriebsriemen an einen der Antriebe angeschlossen.
In this known drafting the individual drives of the lower roller segments are connected to a control device which can adjust the speed of the drives and thus the delay of the drafting system via a corresponding inverter.
The lower roller segments are either directly connected to one of the drives via a motor shaft or in each case connected via a drive belt to one of the drives.

Auch in der DE 39 32 614 A1 ist nicht dargestellt oder beschrieben, wie eine Lageranordnung aussehen könnte, um Unterwalzenantriebe, die über ihre Motorwelle direkt mit einem Unterwalzensegment verbunden sind, beispielsweise zum Wechseln der Verzugsriemchen, leicht auswechselbar im Maschinengestell einer Textilmaschine anzuordnen.
In dieser Schutzrechtsanmeldung ist lediglich anhand eines Ausführungsbeispiels eine Lageranordnung erläutert, bei der die Unterwalzensegmente über Antriebsriemen mit den Antrieben verbunden sind.
In diesem Fall sind sowohl die Unterwalzensegmente als auch die Antriebe über spezielle Lagerteile verschiebbar in Längsführungen so gelagert, dass der Abstand zwischen den Walzensegmenten einstellbar und bei Bedarf änderbar ist.
Zum Ausbau der Unterwalzensegmente und/oder der Antriebe müssen zunächst mühsam die jeweiligen Längsführungen auseinander geschraubt werden.
Also in the DE 39 32 614 A1 is not shown or described how a bearing assembly could look to lower roller drives, which are connected via their motor shaft directly connected to a lower roller segment, for example, to change the Verzugsriemchen easily interchangeable in the machine frame of a textile machine.
In this patent application, a bearing arrangement is only explained based on an embodiment in which the lower roller segments are connected via drive belts to the drives.
In this case, both the lower roller segments and the drives on special bearing parts are slidably mounted in longitudinal guides so that the distance between the roller segments is adjustable and can be changed if necessary.
To remove the lower roller segments and / or the drives, the respective longitudinal guides must first be laboriously screwed apart.

Ausgehend von Streckwerken der vorstehend beschriebenen Gattung liegt der Erfindung die Aufgabe zugrunde, ein Streckwerk zu schaffen, dessen als Walzensegmente ausbildeten Unterwalzen im Bedarfsfall, insbesondere zum Wechseln der Verzugsriemchen, gut zugängig bzw. leicht ausbaubar sind.Starting from drafting systems of the type described above, the invention has for its object to provide a drafting system, designed as roller segments lower rollers in case of need, especially for changing the delay straps, are easily accessible or easily removable.

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 hat insbesondere den Vorteil, dass nach dem Öffnen des Pendelträgers die Unterwalzenantriebe einschließlich der zugehörigen Walzensegmente sofort problemlos in Richtung des Pendelträgers aus ihren Lagereinrichtungen entnommen werden können.
Das heißt, zum Aus- oder Einbau der einzelmotorisch antreibbaren Unterwalzensegmente wird keinerlei Werkzeug oder dergleichen benötigt.
Bei ausgebauten Unterwalzensegmenten sind die Verzugsriemchen, die vorzugsweise im Bereich des Unterwalzensegmente der Mittelunterwalze angeordnet sind, frei zugängig und können bei Bedarf schnell und problemlos gewechselt werden.
The drafting system according to the invention has the particular advantage that after opening the pendulum carrier, the lower roller drives including the associated roller segments can be removed without any problem in the direction of the pendulum carrier from their storage facilities.
That is, for removal or installation of the motor driven sub-roller segments no tools or the like is needed.
When removed lower roller segments Verzugsriemchen, which are preferably arranged in the region of the lower roller segments of the middle lower roller, freely accessible and can be changed quickly and easily if necessary.

In vorteilhafter Ausführungsform ist vorgesehen, dass die Lagereinrichtungen für die Unterwalzenantriebe Aufnahmetaschen aufweisen und zum Beispiel mittels Schraubenbolzen an einem Rahmen festlegbar sind, der seinerseits am Maschinengestell der Luftspinnmaschine befestigt ist (Anspr. 2).
Das heißt, während des Spinnbetriebes liegen die Unterwalzenantriebe und damit auch die zugehörigen Unterwalzensegmente, exakt ausgerichtet, in ihren Arbeitspositionen und werden dabei durch den geschlossenen Pendelträger sicher in den Aufnahmetaschen der Lagereinrichtungen fixiert.
Durch Öffnen des Pendelträgers werden die Unterwalzenantriebe freigegeben und können gemeinsam mit ihren zugehörigen Unterwalzensegmenten leicht aus den Lagereinrichtungen herausgehoben werden.
Der Einbau der Unterwalzensegmente gestaltet sich ebenso problemlos.
In an advantageous embodiment, it is provided that the storage facilities for the lower roller drives have receiving pockets and, for example, by means of bolts to a frame can be fixed, which in turn is attached to the machine frame of the air-spinning machine (claims 2).
That is, during the spinning operation, the lower roller drives and thus the associated lower roller segments are exactly aligned, in their working positions and are thereby fixed by the closed pendulum carrier securely in the receiving pockets of the storage facilities.
By opening the shuttle carrier, the lower roller drives are released and, together with their associated lower roller segments, can be easily lifted out of the storage facilities.
The installation of the lower roller segments is just as easy.

Die Unterwalzenantriebe werden einfach von oben in die offene Lagereinrichtungen eingelegt und werden dabei sofort korrekt ausgerichtet.The bottom roller drives are simply inserted from above into the open storage facilities and are immediately aligned correctly.

Wie im Anspruch 3 beschrieben, ist in vorteilhafter Ausführungsform vorgesehen, dass die Innenabmessungen der Aufnahmetaschen der Lagereinrichtungen auf die Außenkonturen der Unterwalzenantriebe abgestimmt sind.
In solchermaßen ausgebildeten Lagereinrichtungen sind die Unterwalzenantriebe und damit auch die Unterwalzensegmente sowohl bei geöffnetem Pendelträger als auch während des Spinnprozesses, wenn der Pendelträger geschlossen ist, sicher und zuverlässig positioniert.
As described in claim 3, it is provided in an advantageous embodiment that the inner dimensions of the receiving pockets of the storage facilities are matched to the outer contours of the lower roller drives.
In such trained storage facilities, the lower roller drives and thus the lower roller segments both safely with the pendulum carrier and during the spinning process, when the pendulum carrier is closed, safely and reliably positioned.

Wie im Anspruch 4 beschrieben, ist vorteilhafterweise wenigstens die Mittelunterwalze mehrteilig ausgebildet.
Das heißt, wenigstens die Mittelunterwalze bestehen aus zwei Unterwalzensegmenten, die ihrerseits drehfest an einen Unterwalzenantrieb angeschlossen und relativ zueinander rotierbar sind.
Auf diese Weise ist einerseits sichergestellt, dass im Bedarfsfall die Mittelunterwalze problemlos so aufgeteilt
werden kann, dass Verzugsriemchen leicht gewechselt werden können.
Die Relativbewegung der Unterwalzensegmente zueinander ermöglicht außerdem einen getrennten Antrieb der beiden Streckwerksseiten.
Das heißt, bei einem Fadenbruch, bei dem eine Seite des Streckwerkes stillgesetzt wird, kann die andere Seite des Streckwerkes weiter im Betrieb bleiben.
As described in claim 4, advantageously at least the middle lower roller is formed in several parts.
That is, at least the middle lower roller consist of two lower roller segments, which in turn are non-rotatably connected to a lower roller drive and rotatable relative to each other.
In this way, on the one hand, it is ensured that, if necessary, the middle bottom roller can be divided without any problem
can be used to easily change the override aprons.
The relative movement of the lower roller segments to each other also allows a separate drive of the two drafting equipment sides.
That is, in a yarn breakage, in which one side of the drafting system is stopped, the other side of the drafting system can remain in operation.

In bevorzugter Ausführungsform sind die Antriebe der Unterwalzensegmente der Eingangsunterwalze und die Antriebe der Unterwalzensegmente der Mittelunterwalze als Schrittmotoren ausgebildet (Anspr. 5).
Solche Schrittmotoren stellen bewährte und kostengünstige Großserienbauteile dar, die außerdem zum Beispiel auch bezüglich ihrer Drehzahl relativ leicht ansteuerbar sind.
Das heißt, über eine entsprechende, verhältnismäßig einfache Steuereinrichtung kann über die Drehzahlen der Eingangsunterwalze und der Mittelunterwalze der gewünschte Verzug des Streckwerkes genau eingestellt und bei Bedarf auch ohne großen Aufwand korrigiert werden.
In a preferred embodiment, the drives of the lower roller segments of the input sub-roller and the drives of Under roller segments of the middle lower roller formed as stepper motors (claims 5).
Such stepper motors represent proven and cost-effective mass-produced components, which are also relatively easy to control, for example, also in terms of their speed.
That is, via a corresponding, relatively simple control device, the desired delay of the drafting system can be accurately adjusted via the speeds of the input sub-roller and the center lower roller and corrected if necessary without much effort.

Gemäß der Ansprüche 6 und 7 weisen die Unterwalzensegmente im Bereich ihres freien Endes jeweils einen Lagerstumpf auf, der im Einbauzustand der Unterwalzensegmente in eine Lagermuffe ragt. Die Lagermuffe ist mit Wälzlagern ausgestattet, an denen sich die Lagerstümpfe abstützen.
Eine solche Ausbildung ermöglicht einerseits im Bedarfsfall ein einfaches Auseinanderziehen der Unterwalzensegmente, zum Beispiel zum Wechseln der Verzugsriemchen, und stellt anderseits sicher, dass die Unterwalzensegmente während des Spinnbetriebes nicht durch die im Pendelträger gelagerten, auf die Unterwalzensegmente einwirkenden Oberwalzen verkantet werden können.
According to claims 6 and 7, the lower roller segments each have a bearing stump in the region of their free end, which protrudes in the installed state of the lower roller segments in a bearing sleeve. The bearing sleeve is equipped with rolling bearings on which the bearing stumps are supported.
Such a design allows, on the one hand, if necessary, a simple pulling apart the lower roller segments, for example, to change the Verzugsriemchen, and on the other hand, ensures that the lower roller segments can not be tilted during the spinning operation by the mounted in the pendulum carrier, acting on the lower roller segments upper rollers.

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
schematisch in Vorderansicht eine Luftspinnmaschine, die mit den erfindungsgemäß ausgebildeten Streckwerken ausgestattet ist,
Fig.2
das erfindungsgemäße Streckwerk in Seitenansicht, wobei die Unterwalzenantriebe durch den geschlossenen Pendelträger in Lagereinrichtungen festgelegt sind,
Fig.3
das erfindungsgemäße Streckwerk in Draufsicht, ohne Pendelträger,
Fig.4
perspektivisch eine Lagereinrichtung zur Aufnahme der Unterwalzenantriebe.
It shows:
Fig.1
schematically in front view of an air-spinning machine, which is equipped with the drafting devices according to the invention,
Fig.2
the drafting device according to the invention in side view, wherein the lower roller drives are defined by the closed pendulum carrier in storage facilities,
Figure 3
the drafting system according to the invention in plan view, without pendulum carrier,
Figure 4
in perspective, a bearing device for receiving the lower roller drives.

In Fig. 1 ist das erfindungsgemäße Streckwerk 4 schematisch im Zusammenhang mit einer Luftspinnmaschine 1 dargestellt. Derartige Textilmaschinen weisen in der Regel eine Vielzahl von in Reihe nebeneinander angeordneten Arbeitsstellen 2 sowie an wenigstens einem Ende der Luftspinnmaschine 1 ein sogenanntes Endgestell 13 auf.
Wie bekannt, verfügt jede der Arbeits- oder Spinnstellen 2 einer solchen Luftspinnmaschine 1 über eine Faserbandquelle, beispielsweise eine Spinnkanne 3, ein Streckwerk 4, eine Luftspinnvorrichtung 5, eine Fadenabzugseinrichtung 6, einen Garnreiniger 7 sowie eine Fadenchangiereinrichtung 8.
Die Fadenchangiereinrichtung 8 sorgt dafür, dass der in der Luftspinnvorrichtung 5 gefertigte Faden in sich kreuzenden Lagen auf eine Auflaufspule 9 gewickelt wird.
Die Kreuzspule 9 ist, wie üblich, in einem (nicht dargestellten) Spulenrahmen gehalten und wird durch einen (ebenfalls nicht dargestellten) Spulenantrieb rotiert.
Wie in Fig. 1 weiter angedeutet, werden die Spinnstellen 2 der Luftspinnmaschine 1 durch einen selbsttätig arbeitenden Bedienläufer 10 versorgt, der, auf Schienen 11, 12 geführt, entlang der Spinnstellen 2 verfahrbar ist.
In Fig. 1, the drafting device 4 according to the invention is shown schematically in connection with an air-spinning machine 1. Such textile machines generally have a plurality of workstations 2 arranged in series next to one another and at least one end of the air-spinning machine 1, a so-called end frame 13.
As is known, each of the working or spinning stations 2 of such an air-spinning machine 1 has a sliver source, for example a sliver can 3, a drafting device 4, an air-spinning device 5, a thread take-off device 6, a yarn cleaner 7 and a thread-changing device 8.
The Fadenchangiereinrichtung 8 ensures that the manufactured in the air spinning device 5 thread is wound in intersecting layers on a package 9.
The cheese 9 is, as usual, held in a (not shown) creel and is rotated by a (also not shown) coil drive.
As further indicated in FIG. 1, the spinning stations 2 of the air-spinning machine 1 are supplied by an automatically operating operating rotor 10 which, guided on rails 11, 12, can be moved along the spinning stations 2.

Wie in Figur 2 dargestellt, weisen die erfindungsgemäßen Streckwerke 4 in der Regel, ein Eingangswalzenpaar 20, ein Mittelwalzenpaar 21 sowie ein Ausgangswalzenpaar 23 auf, wobei die Walzenpaare jeweils aus antreibbaren Unterwalzen 20A, 21A, 23A sowie in einem Pendelträger 17 gehaltenen Oberwalzen 20B, 21B, 23B bestehen.
Der Pendelträger 17 ist begrenzt beweglich an einer Haltestange 30 befestigte und kann mittel eines Hebels 29 in drei möglichen Stellungen a)"belastet", b)"entlastet" und c)"hochgeklappt" positioniert werden.
As shown in Figure 2, the drafting units 4 according to the invention usually, an input roller pair 20, a pair of intermediate rollers 21 and a pair of output rollers 23, wherein the pairs of rollers each drivable lower rollers 20A, 21A, 23A and 20 held in a pendulum carrier top rollers 20B, 21B , 23B exist.
The pendulum support 17 is limited movably mounted on a support rod 30 and can by means of a lever 29 in three possible positions a) "loaded", b) "relieved" and c) "folded" positioned.

Wie insbesondere aus Fig. 3 ersichtlich, setzen sich die Unterwalzen 20A, 21A, 23A ihrerseits jeweils aus Unterwalzensegmenten 20A1, 20Ar; 21A1, 21Ar; 23A1, 23Ar zusammen, die jeweils durch einen Unterwalzenantrieb 14 bzw. 28 rotiert werden können.
Die Unterwalzensegmente 20Al, 20Ar; 21Al, 2lAr; 23Al, 23Ar sind dabei drehfest mit den Motorwellen der Unterwalzenantriebe 14 bzw. 28 verbunden, die ihrerseits über Versorgungs- und Signalleitungen 22 an eine nicht dargestellte Stromquelle sowie eine ebenfalls nicht dargestellte Steuereinrichtung angeschlossen sind.
Die Unterwalzensegmente 20A1, 20Ar; 21A1, 21Ar; 23A1, 23Ar weisen neben einer strukturierten Arbeitsfläche 16 im Bereich ihres freien Endes jeweils noch einen Lagerstumpf 25 auf.
Im Einbauzustand der Unterwalzensegmente sind diese Lagerstümpfe 25 in Lagermuffen 24 geführt, die über Wälzlager 26, vorzugsweise Nadellager, verfügen.
Im Bereich der Unterwalzensegmente 21Al, 21Ar der Mittelunterwalze 21 sind außerdem Verzugsriemchen 27 angeordnet, die, wie üblich, an Umlenkschienen 31 geführt sind.
Referring particularly to Fig. 3, the lower rollers 20A, 21A, 23A are respectively composed of lower roller segments 20A1, 20Ar; 21A1, 21Ar; 23A1, 23Ar together, which can be rotated by a lower roller drive 14 and 28, respectively.
The lower roller segments 20Al, 20Ar; 21Al, 2lAr; 23Al, 23Ar are rotatably connected to the motor shafts of the lower roller drives 14 and 28, which in turn are connected via supply and signal lines 22 to a power source, not shown, and also not shown control device.
The lower roller segments 20A1, 20Ar; 21A1, 21Ar; 23A1, 23Ar each have a bearing stub 25 in addition to a structured working surface 16 in the region of its free end.
In the installed state of the lower roller segments, these bearing stubs 25 are guided in bearing sleeves 24, which have roller bearings 26, preferably needle roller bearings.
In the area of the lower roller segments 21Al, 21Ar of the middle lower roller 21, delay straps 27 are also arranged which, as usual, are guided on deflection rails 31.

Die Unterwalzenantriebe 14 bzw. 28 sind leicht auswechselbar in Lagereinrichtungen 15 angeordnet, die über Schraubenbolzen 32 an einem Rahmen 18 befestigt sind, der seinerseits am Maschinengestell der Luftspinnmaschine 1 befestigt ist.The lower roller drives 14 and 28 are easily interchangeable arranged in storage facilities 15, the screw bolts 32 at a frame 18 are fixed, which in turn is attached to the machine frame of the air-spinning machine 1.

Die Lagereinrichtung 15, die in Fig. 4 perspektivisch dargestellt sind, weisen nach oben hin offene Aufnahmen 19 mit seitlichen Begrenzungswänden 33 auf.
Die offenen Aufnahmen 19 der Lagereinrichtungen 15 sind bezüglich ihrer Innenabmessungen so auf die Kontur der Unterwalzenantriebe 14, 28 ausgelegt, dass die Unterwalzenantriebe 14, 28 nach ihrer Positionierung in den Lagereinrichtungen 15 sofort exakt in ihrer Arbeitsstellung liegen und durch Schließen des Pendelträgers 17 fixiert werden können.
The bearing device 15, which are shown in perspective in Fig. 4, have upwardly open receptacles 19 with lateral boundary walls 33.
The open receptacles 19 of the storage facilities 15 are so designed with respect to their inner dimensions on the contour of the lower roller drives 14, 28 that the lower roller drives 14, 28 immediately after positioning in the storage facilities 15 are exactly in their working position and can be fixed by closing the pendulum carrier 17 ,

Claims (7)

Streckwerk für eine Spinnmaschine, mit wenigstens einem Eingangswalzenpaar, einem Mittelwalzenpaar sowie einem Ausgangswalzenpaar, wobei die Unterwalzen des Streckwerkes als Walzensegmente ausgebildet sind, die über einzelmotorische Antriebe rotiert werden, und die Oberwalzen in einem Pendelträger gelagert sind,
dadurch gekennzeichnet,
dass die Unterwalzenantriebe (14) wenigstens des Mittelwalzenpaares (21) gemeinsam mit ihrer Unterwalze (21A) derart in einer Lagereinrichtung (15) angeordnet sind, dass sie nach dem Öffnen des die zugehörige Oberwalze (21B) aufnehmenden Pendelträgers (17) in Richtung des Pendelträgers (17) leicht aus ihrer Lagereinrichtung (15) entnehmbar sind.
Drafting system for a spinning machine, with at least one pair of input rollers, a pair of intermediate rollers and a pair of output rollers, wherein the lower rollers of the drafting are formed as roller segments, which are rotated by individual motor drives, and the upper rollers are mounted in a pendulum carrier,
characterized,
in that the lower roller drives (14) of at least the middle roller pair (21) are arranged together with their lower roller (21A) in a bearing device (15) in the direction of the pendulum carrier after opening the pendulum carrier (17) accommodating the associated upper roller (21B) (17) are easily removed from their storage facility (15).
Streckwerk nach Anspruch 1, dadurch gekennzeichnet, dass die Lagereinrichtungen (15) Aufnahmetaschen (19) aufweisen, und mittels Schraubbolzen (20) an einem Rahmen (18) festgelegt sind, der seinerseits am Maschinengestell der Luftspinnmaschine (1) befestigt ist.Drawframe according to claim 1, characterized in that the bearing means (15) receiving pockets (19), and by means of bolts (20) on a frame (18) are fixed, which in turn is attached to the machine frame of the air-spinning machine (1). Streckwerk nach Anspruch 2, dadurch gekennzeichnet, dass die Innenabmessungen der Aufnahmetaschen (19) auf die Außenkonturen der Unterwalzenantriebe (14, 28) abgestimmt sind.Drawframe according to claim 2, characterized in that the inner dimensions of the receiving pockets (19) on the outer contours of the lower roller drives (14, 28) are tuned. Streckwerk nach Anspruch 1, dadurch gekennzeichnet, dass wenigstens die Mittelunterwalze (21A) mehrteilig ausgebildet ist, wobei die Unterwalzensegmente (21A1, 21Ar) relativ zueinander rotierbar sind.Drawframe according to claim 1, characterized in that at least the middle lower roller (21A) is formed in several parts, wherein the lower roller segments (21A1, 21Ar) are rotatable relative to each other. Streckwerk nach Anspruch 1, dadurch gekennzeichnet, dass die Unterwalzenantriebe (14) als Schrittmotoren ausgebildet sind.Drawframe according to claim 1, characterized in that the lower roller drives (14) are designed as stepper motors. Streckwerk nach Anspruch 4, dadurch gekennzeichnet, dass die Unterwalzensegmente (21Al, 21Ar) im Bereich ihres freien Endes jeweils einen Lagerstumpf (25) aufweisen, der im Einbauzustand der Unterwalzensegmente in einer Lagermuffe (24) geführt ist.Drawframe according to claim 4, characterized in that the lower roller segments (21Al, 21Ar) in the region of their free end each have a bearing stub (25) which is guided in the installed state of the lower roller segments in a bearing sleeve (24). Streckwerk nach Anspruch 6, dadurch gekennzeichnet, dass die Lagermuffe (24) mit Wälzlagern (26) zur frei drehbaren Lagerung der Unterwalzensegmente (21A1, 21Ar) ausgestattet ist.Drawframe according to claim 6, characterized in that the bearing sleeve (24) with rolling bearings (26) for freely rotatable mounting of the lower roller segments (21A1, 21Ar) is equipped.
EP06013985.4A 2005-08-25 2006-07-06 Drawing frame for a spinning machine Active EP1757719B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005040144A DE102005040144A1 (en) 2005-08-25 2005-08-25 Drafting system for a spinning machine

Publications (3)

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EP1757719A2 true EP1757719A2 (en) 2007-02-28
EP1757719A3 EP1757719A3 (en) 2009-10-14
EP1757719B1 EP1757719B1 (en) 2013-10-02

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ID=37507569

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EP06013985.4A Active EP1757719B1 (en) 2005-08-25 2006-07-06 Drawing frame for a spinning machine

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US (1) US7441395B2 (en)
EP (1) EP1757719B1 (en)
CN (1) CN1920137B (en)
DE (1) DE102005040144A1 (en)

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EP3533913A1 (en) * 2018-02-28 2019-09-04 Murata Machinery, Ltd. Drafting device and spinning unit

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DE102007020448B4 (en) * 2007-04-27 2015-10-15 Trützschler GmbH & Co Kommanditgesellschaft Device on a spinning preparation machine, e.g. Track, card, combing machine o. The like. With a drafting system
DE102007023460B4 (en) * 2007-05-19 2017-06-22 Saurer Germany Gmbh & Co. Kg Drafting system for a spinning machine
DE102011111725A1 (en) * 2011-08-26 2013-02-28 Oerlikon Textile Gmbh & Co. Kg Textile machine with a variety of jobs
CH714315A1 (en) * 2017-11-10 2019-05-15 Rieter Ag Maschf Ring spinning machine with movably mounted spindle bank.
WO2020089486A1 (en) * 2018-11-02 2020-05-07 Pinter Caipo, S.A.U. Drafting assembly for a ring spinning machine and drafting kits for drafting fibres on a ring spinning machine
DE102019110880A1 (en) * 2019-04-26 2020-10-29 Saurer Intelligent Technology AG Carrying device for a strap stretching unit

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EP3533913A1 (en) * 2018-02-28 2019-09-04 Murata Machinery, Ltd. Drafting device and spinning unit
EP3699335A1 (en) * 2018-02-28 2020-08-26 Murata Machinery, Ltd. Drafting device and spinning unit
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EP3699336A1 (en) * 2018-02-28 2020-08-26 Murata Machinery, Ltd. Drafting device and spinning unit

Also Published As

Publication number Publication date
EP1757719B1 (en) 2013-10-02
EP1757719A3 (en) 2009-10-14
US20070044277A1 (en) 2007-03-01
CN1920137B (en) 2011-04-13
CN1920137A (en) 2007-02-28
US7441395B2 (en) 2008-10-28
DE102005040144A1 (en) 2007-03-01

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