EP2405039B1 - Streckvorrichtung für Spinnmaschine - Google Patents

Streckvorrichtung für Spinnmaschine Download PDF

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Publication number
EP2405039B1
EP2405039B1 EP10007018.4A EP10007018A EP2405039B1 EP 2405039 B1 EP2405039 B1 EP 2405039B1 EP 10007018 A EP10007018 A EP 10007018A EP 2405039 B1 EP2405039 B1 EP 2405039B1
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EP
European Patent Office
Prior art keywords
rollers
drafting
control
compactor
drafting device
Prior art date
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Active
Application number
EP10007018.4A
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English (en)
French (fr)
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EP2405039A1 (de
Inventor
Umberto Micheletti
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.)
Vantex Technologies GmbH
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Vantex Technologies GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vantex Technologies GmbH filed Critical Vantex Technologies GmbH
Priority to EP10007018.4A priority Critical patent/EP2405039B1/de
Priority to BR112013000329A priority patent/BR112013000329A2/pt
Priority to CN201180033174.2A priority patent/CN102971455B/zh
Priority to PCT/EP2011/003350 priority patent/WO2012003972A1/en
Publication of EP2405039A1 publication Critical patent/EP2405039A1/de
Application granted granted Critical
Publication of EP2405039B1 publication Critical patent/EP2405039B1/de
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/22—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by rollers only
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/44—Adjusting drafting elements, e.g. altering ratch
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/56—Supports for drafting elements

Definitions

  • the present invention relates to a drafting device for use in spinning machinery according to the preamble of claim 1.
  • drafting devices also referred to as drafting units, are an essential part of spinning frames or spinning machinery, in which the rove, i.e. the twisted roll or bundle of textile fibers coming from the preparation and fed through the spinning machine, is drafted to the final dimension of the yarn with the best possible regularity and is then twisted and finally wound onto bobbins.
  • a drafting apparatus in which, between a pair of front rollers and a pair of intermediate rollers, a pair of control rollers is inserted.
  • One of the control rollers is actively driven, whereas the second one is passively driven as a result of a friction contact with the first roller.
  • the control rollers are spring loaded. This results in varying tensions during the drafting process.
  • a pair of control rollers is provided in addition to the feed rollers and delivery rollers of the drafting unit, which are held in direct contact by the pressure provided by a spring.
  • a further known prior art drafting device In a further known prior art drafting device according to GB 219,332 , there are provided two intermediate rollers, the lower roller being actively driven and the upper roller being passively driven by means of a gear mechanism in the central portion of the rollers.
  • the upper roller is a pressure-loaded roller, which may move with respect to the lower roller depending on the thickness of a rove of the raw material.
  • the drafting device should also be more flexible, require less intervention by technical staff and minimize production downtime compared to known devices; the mounting, maintenance and replacement in different types of spinning technologies and spinning frames should be simpler and quicker.
  • a drafting device for spinning machinery having a pair of feed rollers, a pair of draft rollers, a pair of control rollers and a pair of delivery rollers being all arranged in this order in a rove feed direction F defining a drafting zone D composed of three sub-drafting zones A, B, C; the feed rollers, draft rollers and control rollers are driven at a respective predetermined speed such that a drafting action is exerted on the rove, whereas the invention is characterized in that said control rollers are both provided with an active drive mechanism, and that said control rollers are mounted in a fixed, but contact-free manner with one another with a defined control gap of a set dimension between them.
  • control rollers located between the draft rollers and the delivery rollers, are therefore not in contact with one another but in a spaced-apart relationship and have a certain defined and fixed distance from each other, which is in the following referred to as a control gap.
  • the control rollers are, according to the invention, both actively driven, which means that both have some type of active drive mechanism, contrary to prior art devices, in which one of the rollers is usually driven and the other one is driven only in a passive manner due to friction contact between these two rollers.
  • the rove which is defined as a twisted roll or bundle of textile fibers, comes from the preparation stages and is fed through the spinning machine. Textile fibers are any discontinuous or staple fibers of a natural or non-natural material which are used in textile materials.
  • the drafting device according to the present invention is furthermore characterized in that said control gap between said control rollers is set in the range of 0.1 mm to 1 mm, preferably 0.1 mm to 0.3 mm, and that said control rollers have a hard control outer surface made of a metal or a metal alloy material, preferably chrome.
  • the fibers of the textile material passing through these control rollers are assisted by this innovative guidance arrangement, where a constant homogeneous speed is maintained on the rove during the drafting process from both sides of the control gap. Furthermore, the fixed and separate mounting of both control rollers avoids an undesired increase or decrease in the pressure exerted on the rove and the textile material fibers in case of variations in rove mass. By means of this, the control of the rove is guaranteed to a high extent, even when the rove is varying in its mass.
  • the spring loaded control rollers or the like lead to an important variation in tension, which becomes even worse in the event of a disturbance due to the fluctuating number of fibers, the mass of the rove, the varying quality of the raw material and also in case of high speed.
  • the present invention avoids all this: the occurrence of friction between textile fibers and varying speeds exerted on the fibers by the control rollers is effectively avoided by remarkably simple measures, i.e. a certain predetermined control gap between the control rollers in combination with an active drive mechanism for each of the pair of control rollers.
  • the drafting operations result in much higher quality and regularity of the final yarn, even in the case of a varying mass of the raw material or varying qualities of the textile fibers, which depend in particular on the preparation stages, or whether they are dry or wet.
  • the control rollers are mounted in a fixed, relative position with regard to a compactor on a common support element, and the compactor has an inner shape adapted to compact and/or compress said rove.
  • this innovative drafting device ensures a controlled movement of almost all of the drafted fibers with a minimum of disturbance, such as friction, differences in speed, tangling, etc. to the other fibers surrounding them.
  • This fixed, relative position between the control rollers and the compactor is set in relation to the types of textile fibers, which are to be drafted: the distance between the compactor and the twin control rollers is set such that the majority of fibers arriving at the nip of the delivery rollers is processed at approximately the same speed in the critical final drafting zone, and due to the compactor, the flaring-out of fibers just before the delivery rollers is effectively avoided.
  • Due to the common support element the relative position between the control rollers and the compactor is guaranteed in each situation.
  • the common support element allows also a simple mounting and replacement in case of damage to either the compactor or other parts of the drafting device.
  • the compactor is positioned in alignment with the center of said pair of control rollers.
  • the rove made up of a compact and rather uniform bundle of textile fibers arrives therefore in the required exact nip position of the draft rollers, resulting in a yarn of a more regular and better quality, independently of the different characteristics and qualities of the fibers in the raw material.
  • the innovative drafting device it is therefore possible to produce a very compact and uniform yarn with high quality. Due to the better drafting performance and the higher quality output from this drafting system, the device according to the present invention is even able to considerably reduce production costs, in particular in the preparation of the rove.
  • a wider range of raw material and of characteristics of the rove in the preparation processes may be drafted, than is possible with previous known devices of the prior art, in which only a certain defined, limited number of textile fibers could be drafted in a certain range of quality.
  • the productivity of said preparation processes and machinery can also be appreciably increased due to the distinctive capabilities of this innovative drafting unit.
  • the compactor is provided between said control rollers and said delivery rollers in the closest possible position directly in front of said delivery rollers in the feed direction F.
  • the compactor is therefore positioned immediately before the nip of the delivery rollers.
  • the compressed and compacted rove is therefore maintained in correct alignment until the final drafting step performed by the delivery rollers in combination with the twin control rollers and the compactor is finished.
  • the compactor of the drafting device is provided in the feed direction F, with first an inner conical guiding part and second an inner parallel compacting part. Therefore, the fibers in the rove coming at a relatively uniform high speed from the two actively driven control rollers will be kept in the parallel compacting part under tension due to the holding action between the delivery rollers and the two control rollers. By means of this, it is guaranteed that most of the fibers are accelerated in a more selective manner as nipped by the delivery rollers.
  • the conical guiding part of the compactor functions as a guide element in order that all fibers are continuously and uniformly guided to the parallel compacting part. This avoids to a high degree disadvantageous flaring-out of outer fibers. In combination with the increase in speed in the drafting unit, this results in a considerable reduction of the flaring-out effect as it is given in known prior art drafting devices. Also through these measures, the irregularity in the final yarn is limited and reduced due to these technical features.
  • the compactor is provided between said control rollers and said delivery rollers in a position close to the delivery rollers, which has a central, longitudinal axis X, which is slightly inclined with respect to a drafting line Y defined by the feed rollers and the delivery rollers.
  • the slight inclination of the central, longitudinal axis of the compactor is, according to the invention, preferably in a range of up to 15 degrees.
  • the inventor of the present invention discovered that such a slight inclination of some degrees with respect to the drafting line Y provides better control and higher drafting quality than an exact alignment of the compactor with the drafting line, as is the case in prior art apparatuses.
  • the compactor is mounted together with said pair of control rollers on a common control bar by screwless fitting features or means, preferably by means of clip mounting features.
  • Other screwless fitting means such as pressure mounting with a pin/hole-combination may also be used according to the invention.
  • screwless fitting the different components, e.g. the control rollers and the compactor, may be easily replaced in the case of damage.
  • the mounting of different types of compactors, e.g. different sizes adapted to different types of raw material, is simplified. The maintenance and the mounting of the device are easy to carry out and do not require specialized personnel, tools or the like.
  • control rollers are gear-driven via said draft rollers (directly or indirectly) at a predetermined driving speed in relation to the speed of the draft rollers.
  • the intermediate gears which may be mounted between the control rollers and the draft rollers, are installed by means of a press-fit mounting.
  • control rollers are provided with scrapers, which are in contact with the outer circumference of each control roller.
  • the scrapers remove all filaments or dirt particles on the control surfaces of the control rollers. With a highly clean surface of the control rollers, any unintended variation in the speeds or pressures of the drafted textile fibers is avoided.
  • a first sub-drafting zone A in the drafting zone D is provided between said feed rollers and said draft rollers, which has features enabling a variable adjustment of its length.
  • the drafting device may therefore be easily adapted to different lengths of textile fibers, depending on the type of raw material, e.g. linen and cotton. It is not necessary to specifically adapt the drafting device to another complex form as was the case with prior art drafting devices for different types of staple fiber material.
  • a first embodiment of the invention is shown in the schematic drawing in Fig. 1 in form of a drafting unit or drafting device 10.
  • the drafting device 10 comprises basically four pairs of rollers 2, 3, 4, 5, one pair of control rollers 4 being mounted together with a compactor 8 on a control bar 9.
  • the drafting device 10 is intended for use in different types and designs of spinning machinery for wet as well as dry spinning applications.
  • the purpose of such a drafting device 10 is the exertion of a drafting action on the rove before the spinning operation.
  • the rove to be processed by the drafting device 10 according to the present invention may consist of discontinuous or staple fibers of different lengths, such as cotton, linen, wool, jute, ramie, hemp, as well as man made fibers.
  • the raw material may come from a preparation step, e.g. a wet treatment prior to the feed rollers on the right-hand top side in Fig. 1 , as a so called rove 1.
  • the rove 1 is fed in the feeding direction F to a first pair of rollers 2, the so-called feed rollers 2.
  • the draft rollers 3 draw the rove 1 from the feed rollers 2.
  • the delivery roller pair 5 draws the rove through the pair of control rollers 4 and the compactor 8.
  • the rove advances at a predetermined speed - usually with a predetermined acceleration - and, according to the present invention, proceeds through a compactor 8 and afterwards to the delivery rollers 5, from which the drafted fibers advance to the twisting part of the spinning machine and finally the bobbin.
  • a drafting zone D is defined, which is comprised of three sub-drafting zones A, B, C.
  • the feed rollers 2 are mounted on an adjustable bracket 13 so that the length of the first sub-drafting zone A is variable.
  • the two other sub-drafting zones B and C are not variable in their length, but may be adjusted by the changing of parts configured specifically for different drafting requirements of spinning machinery.
  • the length of the first sub-drafting zone A is set according to the variable parameters of the discontinuous fibers in the rove, such as the characteristics, special finish, conditions, i.e. wet or dry, length and diameter of the fibers, as well as the rove mass or twist.
  • control rollers 4 both have an active gear drive mechanism. Furthermore, the control rollers 4, according to the present invention, are not in contact with each other, but have a special set distance between them to provide a defined control gap 6 with a predetermined dimension (cf. also Fig. 2 ). The control gap 6 is set according to the variable parameters of the fibers as mentioned above.
  • the control rollers 4 provide through these measures a remarkably large improvement in the control and draft efficiency of very different types of fibers in different qualities, due to the uniform speed of the control rollers 4 and due to the innovative fixed control gap 6 between these rollers 4.
  • the control rollers 4 have in this embodiment on their outer circumference two scrapers 12 for cleaning the control surface 7, which is made of a hard material, such as a metal or metal alloy.
  • the control rollers 4 have a hard surface.
  • the control rollers 4 are mounted in a specified fixed position in the drafting zone and with the predetermined control gap 6 between them on a control bar 9.
  • the drafting device 10 comprises a compactor 8 between the control rollers 4 and the delivery rollers 5 in the closest position possible to the delivery rollers 5.
  • the compactor 8 is mounted in a fixed relation to the control rollers 4 and a predetermined alignment with regard to the drafting line Y.
  • the compactor 8, the scrapers 12 and the control rollers 4 are mounted on one and the same control bar 9 so that an easy fitting, maintenance and exchange of damaged parts is possible.
  • the compactor 8 has first a conical guiding part 81 and second a parallel compacting part 82, as can be seen in more detail in Fig. 2 .
  • the draft rollers 3 and the control rollers 4 generate a slight and opposite deviation of the rove from the drafting line Y.
  • the parts of the drafting device 10 are all made of plastic material except for the driving rollers 2, 3, 4 and 5, whose surfaces are made of a rust-free metal, such as stainless steel, and the driven rollers 2, 3 and 5 which are rubber clad.
  • the control rollers 4 have a hard control surface 7, which is according to one embodiment of the invention realized with a chrome material on the outer surface 7 of the rollers 4.
  • the active drive mechanisms for both of the pair of control rollers 4 are gears (not shown in the figures), which are also mounted on the control bar and which are directly, or via intermediate gears, in contact with the draft rollers 3.
  • the rollers 2, 3, 4 and 5 are driven at a predetermined speed, respectively, such that the drafting of the discontinuous fibers in form of the rove 1 is realized in the drafting zone D.
  • the purpose and function of the three different sub-drafting zones A, B and C according to the drafting device 10 of the present invention is as follows: in the first sub-drafting zone A, the rove 1 is fed to the draft rollers 3. In this area, the tension is in particular applied to long fibers. In this area A, the rove is drawn to the ideal tension by means of the adjustment of the respective speeds of the rollers 2, 3 via gears installed at the head of the spinning frame, hence achieving a predetermined acceleration of the fibers.
  • the second sub-drafting zone B from the draft rollers 3 to the two actively driven control rollers 4 is the principal drafting area for the majority of fibers, i.e. long and medium fibers.
  • the two control rollers 4 are also driven via a gear mechanism (not shown in the figures), which is in contact with the draft rollers 3, and at a predetermined speed such that a uniform and continuous drafting action is guaranteed.
  • both control rollers 4 are actively driven and have a set control gap 6 between them and arranged at a predetermined distance from the compactor 8 and the delivery rollers 5, the control rollers provide in combination with the other rollers and the compactor 8 a much better control of the drafting process than in the case of prior art drafting devices, in which the control rollers are in direct contact and can therefore run in some circumstances at different speeds or in which rubber belts, so called aprons, are used, which may apply a varying tension to the fibers in this critical part of the drafting zones B and C.
  • the control rollers 4 have a fixed distance from one another and from the nip of the delivery rollers 5 but may be exchanged as needed together with the control bar 9 and the compactor 8, depending on the aforementioned variable parameters of the raw material.
  • Fig. 2 the two control rollers 4 mounted together with the compactor 8 on a control bar 9 are shown in more detail in a schematic side view.
  • the two control rollers 4 are both driven by an active drive mechanism, as indicated by the arrows in Fig. 2 .
  • the dimension of the control gap 6 is set on the basis of the variable parameters concerning the type, quality, form and length of the raw material which is to be drafted by the drafting device 10.
  • a compactor 8 is also mounted on the same control bar 9, at a predetermined distance d.
  • the compactor 8 is in alignment with the center of the control rollers 4 and in a position as close as possible to the delivery rollers 5 (cf. also Fig.
  • the compactor 8 is made of plastic material and comprises essentially two parts, first a conical guiding part 81 for approximately two thirds of its length and second a parallel compacting part 82 of a predetermined smaller diameter (approximately one third of the total length).
  • the conical part 81 of the compactor 8 has a conicity of in the range of 25 to 50 degrees.
  • the compactor 8 has an outer shape such that it can be mounted as close as possible to the nipping point in front of the two delivery rollers 5 (cf. also Figs. 1 and 3 ).
  • FIG. 3 is a detailed side view of another embodiment of the main parts of this drafting device 10 according to the present invention showing the combination of a control bar 9, two driven control rollers 4 and a compactor 8.
  • the control bar 9 is preferably made of a plastic material. At its free end, the control bar 9 has in this embodiment a mounting fork 11 for fitting to existing spinning sections of spinning machinery so that the drafting device 10 may, according to the invention, also be easily fitted to different types of existing spinning frames.
  • the compactor 8 as well as the control rollers 4 and their gear mechanism (not shown in Fig.
  • FIGs. 4, 4a and 4b a further embodiment of a drafting unit 10 according to the present invention is shown.
  • two drafting units 10 are shown in the mounted situation side by side and behind the delivery rollers 5, only one of which is shown in Figs. 4, 4a and 4b for simplicity reasons.
  • Two control rollers 4 are respectively mounted together with a compactor 8 on a common control bar 9 as a support element.
  • the compactor 8 is here mounted through a screwless feature, which is in this case a clip-fitting feature 15, which can be seen in more detail in Figs. 4a and 4b .
  • the compactor 8 is provided with a lateral slot 16 in order to be able to introduce and to remove the rove 1 from the drafting unit 10 (cf. Fig. 4a ).
  • the clip mounting means 15 of the compactor 8 is arranged at a lateral position of the rove 1 so that the compactor 8 protrudes into the drafting zone, as it is visualized by the rove feed direction F in Fig. 4a .
  • the control rollers 4 are mounted in a predetermined and fixed relative position with a control gap 6 of a predetermined dimension.
  • a high drafting quality is achieved by the drafting unit 10 according to the present invention, independently of the speed or other variable characteristics depending on the preparation of the raw material or the type of raw material, which is to be drafted.
  • the drafting device 10 is, according to the invention, capable to greatly increase quality in the drafting output and is less sensitive to variations in the quality and the length of fibers.
  • the different sub-drafting zones A to C of the drafting zone D are specifically adapted to different lengths of fibers and provide a much better control of the fibers in the drafting process than prior art drafting devices have done.

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

Claims (12)

  1. Streckvorrichtung (10) für die Verwendung in einer Spinnmaschine und zum Strecken von diskontinuierlichen Fasern, wie zum Beispiel Baumwolle, Leinen, Wolle, Jute, Ramie, Hanf oder Kunstfasern, mit einem Paar von Zufuhrwalzen (2), einem Paar von Streckwalzen (3), einem Paar von Steuerwalzen (4) und einem Paar von Abgabewalzen (5), welche in dieser Reihenfolge in einer Vorgarnzuführrichtung (F) angeordnet sind, welche eine Streckzone (D) definiert, die aus drei Unter-Streckzonen (A, B, C) zusammengesetzt ist, wobei die Walzen (2, 3, 4) bei einer jeweiligen vorherbestimmten Geschwindigkeit derart angetrieben werden, dass eine Streckwirkung auf das Vorgarn (1) ausgeübt wird, dadurch gekennzeichnet, dass die Steuerwalzen (4) beide mit einem aktiven Antriebsmechanismus versehen sind, dass die Steuerwalzen (4) in einer festen, aber kontaktfreien Art und Weise mit einem definierten Steuerabstand (6) von einer vorherbestimmten Abmessung zwischen sich montiert sind, dass der Steuerabstand (6) zwischen den Steuerwalzen (4) eingestellt ist, um in einem Bereich von 0,1 mm bis 1 mm, vorzugsweise von 0,1 mm bis 0,3 mm, zu liegen, und dass die Steuerwalzen (4) eine harte äußere Steueroberfläche (7) aufweisen, die aus einem Metallmaterial oder aus einer Metalllegierung, vorzugsweise aus Chrom, hergestellt ist.
  2. Streckvorrichtung (10) nach Anspruch 1, dadurch gekennzeichnet, dass die Steuerwalzen (4) in einer festen relativen Position mit Bezug auf einen Verdichter (8) auf einem gemeinsamen Stützelement (9) montiert sind und dass der Verdichter (8) eine innere Form aufweist, die angepasst ist, um das Vorgarn (1) zu verdichten und zu komprimieren.
  3. Streckvorrichtung (10) nach Anspruch 2, dadurch gekennzeichnet, dass der Verdichter (8) in Ausrichtung zu dem Mittelpunkt des Paares von Steuerwalzen (4) positioniert ist.
  4. Streckvorrichtung (10) nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass der Verdichter (8) zwischen den Steuerwalzen (4) und den Abgabewalzen (5) in der nächstmöglichen Position unmittelbar vor den Abgabewalzen (5) in der Zuführrichtung (F) vorgesehen ist.
  5. Streckvorrichtung (10) nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass der Verdichter (8) in der Zuführrichtung (F) als erstes mit einem inneren konischen Führungsteil (81) und als zweites mit einem inneren parallelen Verdichtungsteil (82) versehen ist.
  6. Streckvorrichtung (10) nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass der Verdichter (8) zwischen den Steuerwalzen (4) und den Abgabewalzen (5) in der nächstmöglichen Position unmittelbar vor den Abgabewalzen (5) vorgesehen ist, welche eine zentrale Längsachse (X) aufweisen, welche mit Bezug auf eine Strecklinie (Y), die durch die Zufuhrwalzen (2) und die Abgabewalzen (5) definiert ist, leicht geneigt ist, vorzugsweise in dem Bereich von bis zu 15 Grad.
  7. Streckvorrichtung (10) nach den Ansprüchen 2 bis 6, dadurch gekennzeichnet, dass der Verdichter (8) zusammen mit dem Paar von Steuerwalzen (4) an dem gemeinsamen Stützelement (9) mittels schraubenloser Befestigungseigenschaften montiert ist, vorzugsweise mittels Clipmontageeigenschaften (15).
  8. Streckvorrichtung (10) nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Steuerwalzen (4) mit einer vorherbestimmten Antriebsgeschwindigkeit in Bezug zu der Geschwindigkeit der Streckwalzen (3) über die Streckwalzen (3) Zahnradgetrieben sind.
  9. Streckvorrichtung (10) nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass Abstreifer (12) in Kontakt mit den äußeren Umfangen der Steuerwalzen (4) vorgesehen sind.
  10. Streckvorrichtung (10) nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass eine erste Unter-Streckzone (A) zwischen den Zuführwalzen (2) und den Streckwalzen (3) mit Mitteln (13) für eine variable Einstellung ihrer Länge versehen ist.
  11. Streckvorrichtung (10) nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass eine zweite Unter-Streckzone (B) zwischen den Streckwalzen (3) und den Steuerwalzen (4) eine Länge in dem Bereich von 14 mm bis 24 mm je nach Art der Fasern aufweist.
  12. Streckvorrichtung (10) nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass eine dritte Unter-Streckzone (C) zwischen den Steuerwalzen (4) und den Abgabewalzen (5) eine Länge in dem Bereich von 10 mm bis 40 mm je nach Art der Fasern aufweist.
EP10007018.4A 2010-07-07 2010-07-07 Streckvorrichtung für Spinnmaschine Active EP2405039B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP10007018.4A EP2405039B1 (de) 2010-07-07 2010-07-07 Streckvorrichtung für Spinnmaschine
BR112013000329A BR112013000329A2 (pt) 2010-07-07 2011-07-06 dispositivo de tração para máquinas de fiação
CN201180033174.2A CN102971455B (zh) 2010-07-07 2011-07-06 用于纺纱机的牵伸装置
PCT/EP2011/003350 WO2012003972A1 (en) 2010-07-07 2011-07-06 Drafting device for spinning machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10007018.4A EP2405039B1 (de) 2010-07-07 2010-07-07 Streckvorrichtung für Spinnmaschine

Publications (2)

Publication Number Publication Date
EP2405039A1 EP2405039A1 (de) 2012-01-11
EP2405039B1 true EP2405039B1 (de) 2016-11-30

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EP (1) EP2405039B1 (de)
CN (1) CN102971455B (de)
BR (1) BR112013000329A2 (de)
WO (1) WO2012003972A1 (de)

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
JP2015081398A (ja) * 2013-10-23 2015-04-27 村田機械株式会社 ドラフト装置及び紡績機

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Publication number Priority date Publication date Assignee Title
GB219332A (en) * 1924-07-18 1924-12-18 Melchior Wild Improvements in and relating to the roller drawing mechanism of spinning and like machines
US2252546A (en) * 1936-10-29 1941-08-12 Saco Lowell Shops Sliver drawing mechanism
SU370291A2 (de) * 1971-06-29 1973-02-15

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GB692028A (en) 1949-10-03 1953-05-27 Tmm Research Ltd Improvements in roller-type drafting apparatus of textile spinning and analogous machinery
DE2036706A1 (de) * 1970-07-24 1972-02-03 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Vorrichtung zum Verziehen von Lang Stapelfaserbändern
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WO2012003972A1 (en) 2012-01-12
BR112013000329A2 (pt) 2017-07-25
EP2405039A1 (de) 2012-01-11
CN102971455A (zh) 2013-03-13

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