EP2142690B1 - Device for delivering drawn fiber material to a workstation of a machine processing said fiber material - Google Patents

Device for delivering drawn fiber material to a workstation of a machine processing said fiber material Download PDF

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Publication number
EP2142690B1
EP2142690B1 EP08734456.0A EP08734456A EP2142690B1 EP 2142690 B1 EP2142690 B1 EP 2142690B1 EP 08734456 A EP08734456 A EP 08734456A EP 2142690 B1 EP2142690 B1 EP 2142690B1
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EP
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Prior art keywords
spinning
knitting
fibre material
cleaning station
fiber material
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EP08734456.0A
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German (de)
French (fr)
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EP2142690A2 (en
Inventor
Georg KÖNIG
Reinhard KÖNIG
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Individual
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/11—Spinning by false-twisting
    • D01H1/115—Spinning by false-twisting using pneumatic means
    • 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
    • D01H4/02—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 a fluid, e.g. air vortex
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/14—Circular knitting machines with independently-movable needles with provision for incorporating loose fibres, e.g. in high-pile fabrics

Definitions

  • the invention relates to a device of the type specified in the preamble of claim 1 (see GB-A-2 158 108 ).
  • Devices of this type are used in particular on knitting machines known as spinning knitting machines (eg PCT WO 2004/079068 .
  • PCT WO 2007/093 166 A2 are characterized by the fact that the knitwear is not made of conventional, twisted yarns, but of a fiber sliver, Flyerlunte.
  • the spinning device contains a twisting element and a subsequent transport or spinning tube.
  • the fiber material is thereby converted into a temporary, real-twisted yarn that can be transported well over longer distances.
  • the rotations are reduced again to zero (false-twist principle), whereby a knitted fabric with extreme softness is obtained.
  • the spinning device can also be set up to form a permanently consolidated, in particular a so-called.
  • Unconventional yarn and z. B. be designed as an air-spinning device (see, for. EP 1 518 949 A2 and EP 1 826 299 A2 ). Such a yarn also has certain rotations or turns, but is such. B. a bundle or Umwindegarn no yarn in the classical sense.
  • the spinning process is preferably adjusted so that, as in the case of the temporary yarn described above, although a fiber structure which is sufficiently strong for the desired transport purposes is obtained, a sufficiently soft knit fabric is nevertheless obtained.
  • a disadvantage of the processing of the fiber material fed to the knitting machine in the manner described is that dirt particles, nits, lint, short and foreign fibers as well as other foreign bodies adhering loosely to the fiber material and entrained by it lead to defects in the knitted fabric and to contamination of the stitch forming bodies can. Unlike the normal spinning, no winder or the like are present, by means of which impurities and other defects in the fiber material can be detected and optionally eliminated by cutting the fiber material and subsequent splicing.
  • a spinning nozzle apparatus for a spinning machine which is surrounded by a flash chamber with vents to attenuate ultrasonic waves.
  • a flash chamber with vents to attenuate ultrasonic waves.
  • the expansion chamber also open cleaning openings.
  • the technical problem of the present invention is to design the device described at the outset in such a way that it enables efficient cleaning of the fiber streams before they enter the workstations of the respective machine, avoids undesired fiber fly and, with regard to the production and operating costs, with acceptable suction. or blowing currents can be realized.
  • the invention has the advantage that arranged by means of a between two sections of a spinning and transport tube or between two spinning devices, designed as a closed system cleaning station, which works with blowing and / or suction, effective removal of interfering fiber fly and other contaminants is achieved. Disturbances of the working process are thereby largely reduced, and also the deposition of lint, dust and other impurities on the respective machine is largely avoided. In addition, despite the use of a closed flow system, the desired transport of the fiber material to the work stations is not impaired.
  • Fig. 1 shows roughly schematically a device according to the invention for a machine, which is preferably a stitch-forming machine and in the embodiment specifically a circular knitting machine containing a needle cylinder 1 with knitting needles 2, a knitting needles 2 associated knitting lock 3 and a yarn guide 4 with a yarn guide hole 5. Also shows Fig. 1 a knitting system of the knitting machine, on which the knitting needles 2 are driven out by means of the knitting lock 3 in a receiving position suitable for receiving fiber material 6, wherein the fiber material 6 passes through the thread guide hole 5.
  • the fiber material 6 is generated for each knitting system by means of a drafting system 7, of which in Fig. 1 only two output rollers 7a are shown and the not shown in the manner of a sliver, a Flyerlunte od. Like., Is supplied.
  • a coming out of the drafting 7, stretched to a desired fineness fiber structure is supplied in the embodiment of a spinning device 8, which contains a spinning member 9, here a operated with compressed air pü swirl member, and associated with this spinning and transport tube 10.
  • the spinning and transport tube 10 is followed by a second spinning and transport tube 11, which has an outlet end terminating in the thread guide hole 5.
  • the entry end of the second spinning and transport tube 11 is connected to a second spin element 12 so that the spinning element 9 and the spinning and transport tube 10 form the spinning device 8 and the spinning element 12 and spin and transport tube 11 form a second spinning device 14 in the transport direction of the fiber material 6 on the Spinning device 8 follows.
  • the purpose of the spinning device 8 is to convert the fiber strand discharged from the drafting system 7 into a temporary yarn 15 having true rotations which are maintained from the second spinning device 14 to the yarn guide 4. In the fiber transport direction behind the yarn guide 4, the rotations are substantially resolved again by the false-twist effect, so that the fiber material 6 supplied to the knitting needles 2 is a largely untwisted fiber material.
  • Circular knitting machines of the type described are z. B. from the documents PCT WO 2004/079068 and DE 10 2006 006 502 A1 which are hereby made the subject of the present disclosure in order to avoid repetition by reference to them.
  • a cleaning station 16 is connected between the outlet end of the spinning and transport tube 10 and the inlet end of the spinning member 12, which is connected to a manifold 17 and serves to clean and unwind the fiber stream.
  • cleaning is meant here that in the station 16 as possible all entrained by the fiber stream impurities such as lint, dust, short fibers, Mulm, shell parts, etc. are removed without damaging the fiber stream or the temporary yarn 15 itself and on the way to hamper the thread guide 4.
  • the cleaning station 16 is connected to the exit end of the spinning and transport tube 10 and the entrance end of the spinning member 12 so as to form a substantially closed flow system with them, i.e., a flow path. H. the separated from the fiber stream impurities are supplied directly to the manifold 17 without going to the outside environment.
  • the cleaning station 16 includes according to Fig. 2 to 5
  • a swirl chamber 16 a surrounded by a housing and a discharge pipe 16 b, according to Fig. 4 can be conical. So that the cleaning station 16 can be maintained and repaired in the event of a malfunction, it is z. B. either with a flexible coupling 18 ( Fig. 1 ) or by means of a pivot connection ( Fig. 4, 5 ) connected to the manifold 17, wherein the pivotal connection according to 4 and 5 may also be a Scharmier 19 arranged between the swirl chamber 16a and the discharge pipe 16b, which is in Fig. 4 in a closed position and in Fig. 5 is shown in an open position. If necessary, the arrangement can also be made so that the cleaning station 16 or the swirl chamber 16a can be pivoted or moved together with the subsequent spinning device 14.
  • the swirl chamber 16a which is designed essentially as a closed cavity, is connected in terms of flow with the spinning and transport tube 10 and the spin element 12. It serves the purpose of freeing explosively from the transport tube 10 into it entering fiber material of flying fibers, impurities, etc. and supply them via the discharge pipe 16b of the manifold 17 before the fiber material or temporary yarn 15 enters the next spinning device 14.
  • the swirl chamber 16a is preferably in addition to a z. B. vertically upwards or obliquely downwardly facing connection piece 20 or 21, which is arranged tangentially to the spinning and transport tube 10.
  • connection piece 20 or 21 Through the connecting piece 20, 21 of the swirl chamber 16a compressed air is fed pü, which supports the excretion process and amplified.
  • the supplied through the connecting piece 20, 21 compressed air drives the entering into the swirl chamber 16a fiber material in addition in the direction of rotation, as the arrows in Fig. 2 to 5 indicate while at the same time loose fibers and the like are driven into the discharge pipe 16b.
  • a natural and very effective deposition of schematically indicated contaminants 22 such. As fiber fly, dust, etc. reached from the fiber stream, as in Fig. 2 to 4 is indicated schematically.
  • the excreted from the fiber stream impurities 22 are removed by means of the discharge pipe 16b and the manifold 17, the z. B. is connected to a Monabsaugung the circular knitting machine, so that in her and possibly also in the discharge pipe 16 b, a negative pressure pu prevails.
  • the Manifold 17 are connected to a compressed air source to produce in her an overpressure pü, which entrains the impurities 22 and feeds a central collection point. Since the pressures to be provided in the swirl chamber 16a and in the discharge pipe 16b are comparatively low, the additional energy required by the cleaning station 16 is also small.
  • FIG. 6 A second embodiment of the device according to the invention is in Fig. 6 represented in the same parts with the same reference numerals as in Fig. 1 to 5 are designated.
  • the collecting line 17 is extended on its rear side by a connecting tube 17a.
  • the suction nozzle 17b is expediently assigned a blow nozzle 23 operated with excess pressure pü, by means of which the cleaning action in the region of the output roller pair 7a is further improved.
  • Fig. 6 further shows that the second spinning and transport tube 11 here has a smaller diameter than the first spinning tube 10.
  • the displacement in the spinning tube 10 increases with respect to the displacement in the spinning tube 11 and thus also the Entflugungs- or cleaning performance.
  • the overpressure pü in the spinneret 9 can be reduced or set to zero, in which case the cleaning performance depends essentially solely on the negative pressure in the manifold 17 and energy is saved.
  • FIG. 6 shows Fig. 6 in that the cleaning station 16 contains a swirl chamber 16c, which in contrast to Fig. 1 has a downwardly projecting, preferably conically shaped approach, which is provided with a small cleaning or suction port 16d.
  • the approach allows as in Fig. 1 the escape of contaminants from the fiber stream, while the cleaning port 16d, the suction of air from the side of the manifold 17, as indicated by arrows. Thus, the impurities are sucked up and prevented from falling down through the opening 16d. Overall, however, the device is after Fig. 6 a substantially closed flow system.
  • a compressed air line may be connected to the cleaning port 16d to provide similar flow conditions as in FIGS. 2 and 3 to accomplish.
  • a third preferred embodiment of the device according to the invention is in Fig. 7 shown.
  • the spinning and transport tube 10 has in relation to the spinning and transport tube 11 in turn has a larger diameter.
  • the negative pressure in the cleaning station 16 is high (pu >>) and is on the order of suppressions common in ring and compact spinning.
  • the spinning member 9 is at a minimum distance from the output rollers 7a and projects into the gusset. This creates a strong suction air flow in the spinning and transport tube 10, which keeps the output rollers 7a clean.
  • the compressed air in the spinning member 9 provides the necessary rotation in the spinning and transport tube 10, so that the fiber fly is deposited in the swirl chamber 16a.
  • the device comes with few components.
  • the pressure in the spinning member 12 is suitably adjusted so that the spinning tension is so strong that the rotating temporary yarn 15 does not touch the walls of the spinning and transport tube 10.
  • K is the length of the spinning device 14.
  • the length of the spinning and transport tube 10 may be greater than the length of the spinning and transport tube 11.
  • Fig. 8 shows a fourth embodiment of the device according to the invention, the is preferably used when particularly long first spinning and transport tubes 10 are desired.
  • the spinning and transport tube 10 is preferably divided into at least two sections 10a, 10b with the lengths L1 and L2 and the cleaning station 16 is arranged between the two sections 10a, 10b.
  • the second spinning device 14 of reduced length K1 adjoins the section 10b.
  • FIGS. 9 and 10 show a further embodiment of the design of a cleaning station 24, which includes a swirl chamber 24a, which is firmly connected here with a discharge pipe 24b, which may be connected via a coupling 25 rigidly connected to the manifold 17 or a machine part.
  • the swirl chamber 24a is at an exit end z.
  • the section 10b ( Fig. 8 ) of the spinning and transport tube while having at one inlet end a preferably circular opening 26, which in section to Fig. 10 indicated by dashed lines.
  • the section 10a of the spinning and transport tube is arranged coaxially with the opening 26, but ends according to Fig. 9 with a certain axial distance in front of this opening 26.
  • a tubular extension piece 27 is slidably mounted on the portion 10a, whose inner diameter substantially corresponds to the outer diameter of the portion 10a.
  • This extension piece 27 may accordingly Fig. 9 beyond the leading end of the portion 10a, into the opening 26 where it assumes an operative position and, as in the other embodiments, ensures that the cleaning station 24 is substantially fluidly in communication with the exit ends of the portions 10a, 10b closed system forms.
  • the swirl chamber 24a analogous to Fig. 2 z. B.
  • the cleaning station 24 analogous to Fig. 1 between two spinning devices (eg 8 and 14).
  • An advantage of this embodiment is that the cleaning station 24 and the subsequent pipe section 10b and the subsequent twisting element 12 can be arranged rigidly.
  • the described cleaning stations 16, 24 provide an effective means to intercept naturally occurring fiber fly in the area of the transition points between two spinning devices 8, 14 or two pipe sections 10a, 10b of the same spinning device 8, so that free fibers, dust, etc., ie the impurities 22nd do not enter the environment, but a central suction od. Like. Are fed. With the help of the supplied compressed air through the connecting pieces 20, 21 ( FIGS. 2 and 3 ) this process is further promoted.
  • Fig. 11 that shows too Fig. 1 apparent knitting system on an enlarged scale.
  • the air supplied by means of the twist element escapes in a rotating and explosive manner, whereby fluff, shell parts or the like remaining in or on the fiber material 6 are separated out as in the swirl chambers 16a, 24a.
  • these contaminants may form deposits 28 on the knitting lock 3.
  • extremely short fibers can form further deposits 29 between the needle cylinder 1 and the knitting cam 3.
  • a further arranged at the top of the knitting lock 3, preferably also connected to the central suction suction duct 30 is provided in a further development of the invention, the suction opening 30a is located where the deposits 28 preferably form.
  • compressed air channels 31, 32 may be provided in the knitting cam 3 and in the needle cylinder 1, which end in the space between the knitting cam 3 and the needle cylinder 1 and can be connected to a compressed air source pü. This makes it possible to whirl up the impurities 29 forming impurities, whereby these impurities also get into the suction channel 30.
  • the suction and compressed air channels 30 to 32 can be turned on intermittently or permanently as needed during operation of the circular knitting machine and keep the knitting system largely free of unwanted contaminants and
  • Fiber fly Preferably, a freely programmable control device is provided for this purpose.
  • Fig. 12 shows roughly schematically and in perspective the fiber flow between the yarn guide hole 5 and the knitting needles 2. From the yarn guide hole 5 escapes air under high rotation tangentially and explosively. At the same time, the fiber material 6 is inserted into the passing knitting needles 2. However, on both sides of the central axis of the fiber flow, this undergoes a gradual increase in cross-section through partial flows 33 and 34 with an exit angle 35. It is understood that the smaller the exit angle 35, the greater the quality of the knitted fabric and the running reliability of the circular knitting machine.
  • a smaller exit angle 35 is achieved in that od below the yarn guide hole 5, a ventilation duct 36, a baffle.
  • the like. Is arranged, which is supplied by means of a line 37 compressed air.
  • the ventilation channel 36 runs smoothly in the region of the exit angle 35 and is shaped such that the exit angle 35 is reduced overall.
  • Fig. 12 between the only schematically indicated knitting needles 2 and conventional boards 38 indicated that in a not shown, the needle cylinder 1 (Fig. Fig. 1 ) associated circuit board ring are arranged.
  • an arrow v indicates the direction in which the knitting needles 2 and sinkers 38 move together with the needle cylinder 1.
  • FIGS. 13 and 14 show means for monitoring the knitting process in the area of a knitting system.
  • a first sensor 39 is disposed immediately adjacent to the yarn guide hole 5 and monitors the proper exit of the fiber material 6 therefrom. If no temporary yarn emerges from the yarn guide hole 5, the sensor 39 emits an error signal.
  • a second sensor 40 detects whether the tongues of the knitting needles 2 presupposed as latch needles are properly opened in the ejection phase. If a tongue remains closed, the sensor 40 emits an error signal.
  • an optical monitoring device is preferably provided for the existing between the yarn guide hole 5 and a culmination of the respective knitting system fiber stream. The monitoring device uses image and pattern recognition means to scan a picture frame 41 (FIG. Fig. 14 ), within which, with proper supply of the fiber material 6, a particular pattern is expected, in particular for its cross-sectional shape. A faulty pattern leads to another error signal. Due to today's speed of image processing, this monitoring can be done in real time.
  • the generation of one of said error signals leads to the immediate shutdown of the relevant knitting system where the error has occurred, or to shutdown the circular knitting machine to minimize any damage, especially in the knitted fabric to be produced.
  • the invention is not limited to the described embodiments, which can be modified in many ways. This applies initially to the circular knitting machine shown as an example, in place of other mesh-forming machines such. B. flat knit or Zweonturigen circular knitting machines can be applied. Furthermore, instead of working with twisting devices spinning devices also other, in particular z. B. air-spinning devices are provided. In other machines, which are to be fed stretched fiber materials, the invention can be used profitably.
  • the knitting systems or knitting stations are replaced by other jobs. It is also clear that in the event that more than two spinning devices or sections of a spinning and transport tube are present, it is expedient to arrange a cleaning station described in each intermediate space between them. Furthermore, the basis of the Fig. 1 to 10 cleaning stations described only preferred embodiments of which can be deviated in manifold ways. Finally, it is understood that the various features may be applied in combinations other than those described and illustrated.

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

Description

Die Erfindung betrifft eine Vorrichtung der im Oberbegriff des Anspruchs 1 angegebenen Gattung (siehe GB-A-2 158 108 ). Vorrichtungen dieser Art werden insbesondere an als Spinnstrickmaschinen bezeichneten Strickmaschinen angewendet (z. B. PCT WO 2004/079068 , PCT WO 2007/093165 A2 , PCT WO 2007/093 166 A2 ). Diese zeichnen sich dadurch aus, dass die Maschenware nicht aus üblichen, gedrehten Garnen, sondern aus einem als Faserband, Flyerlunte od. dgl. vorliegenden Fasermaterial hergestellt wird, das vor der Maschenbildung mit Hilfe eines aus der Spinnereitechnik bekannten Streckwerks auf eine vorgewählte Feinheit verzogen und nach seinem Austritt aus dem Streckwerk mit Hilfe einer Spinnvorrichtung in einen zum Transport zu üblichen Stricksystemen od. dgl. geeigneten Zustand gebracht wird.The invention relates to a device of the type specified in the preamble of claim 1 (see GB-A-2 158 108 ). Devices of this type are used in particular on knitting machines known as spinning knitting machines (eg PCT WO 2004/079068 . PCT WO 2007/093165 A2 . PCT WO 2007/093 166 A2 ). These are characterized by the fact that the knitwear is not made of conventional, twisted yarns, but of a fiber sliver, Flyerlunte. Like. Present fibrous material, the warped before the stitch formation using a known from spinning technology drafting to a preselected fineness and od after its exit from the drafting system with the aid of a spinning device in a transport to conventional knitting systems. The like. Suitable condition is brought.

In einer besonders bevorzugten Variante enthält die Spinnvorrichtung ein Drallorgan und ein an dieses anschließendes Transport- oder Spinnrohr. Das Fasermaterial wird dadurch in ein temporäres, mit echten Drehungen versehenes Garn umgewandelt, das sich gut über längere Strecken transportieren lässt. Kurz vor der Verarbeitung durch Stricknadeln od. dgl. werden die Drehungen wieder auf Null abgebaut (Falschdrahtprinzip), wodurch eine Maschenware mit extremer Weichheit erhalten wird.In a particularly preferred variant, the spinning device contains a twisting element and a subsequent transport or spinning tube. The fiber material is thereby converted into a temporary, real-twisted yarn that can be transported well over longer distances. Just before processing by knitting needles or the like, the rotations are reduced again to zero (false-twist principle), whereby a knitted fabric with extreme softness is obtained.

Alternativ kann die Spinnvorrichtung aber auch zur Bildung eines bleibend verfestigten, insbesondere eines sog. unkonventionellen Garns eingerichtet und z. B. als Luft-Spinnvorrichtung ausgebildet sein (vgl. z. B. EP 1 518 949 A2 und EP 1 826 299 A2 ). Ein derartiges Garn weist ebenfalls gewisse Drehungen oder Windungen auf, ist aber wie z. B. ein Bündel- oder Umwindegarn kein Garn im klassischen Sinn. Der Spinnvorgang wird vorzugsweise so eingestellt, dass wie im oben beschriebenen Falls des temporären Garns zwar ein für die gewünschten Transportzwecke ausreichend fester Faserverband entsteht, aber dennoch eine hinreichend weiche Maschenware erhalten wird.Alternatively, however, the spinning device can also be set up to form a permanently consolidated, in particular a so-called. Unconventional yarn and z. B. be designed as an air-spinning device (see, for. EP 1 518 949 A2 and EP 1 826 299 A2 ). Such a yarn also has certain rotations or turns, but is such. B. a bundle or Umwindegarn no yarn in the classical sense. The spinning process is preferably adjusted so that, as in the case of the temporary yarn described above, although a fiber structure which is sufficiently strong for the desired transport purposes is obtained, a sufficiently soft knit fabric is nevertheless obtained.

Bei Rundstrickmaschinen mit einer Vielzahl von Stricksystemen ist es zweckmäßig, die Streckwerke mit vergleichsweise großen Abständen von den Stricksystemen anzuordnen. In einem solchen Fall werden zwischen den Streckwerken und den Stricksystemen vorzugsweise wenigstens zwei, kaskadenförmig hintereinander angeordnete, aus je einem Spinnorgan und einem Spinn- und Transportrohr gebildete Spinnvorrichtungen vorgesehen.In circular knitting machines with a variety of knitting systems, it is expedient to arrange the drafting systems with comparatively large distances from the knitting systems. In such a case, preferably at least two, cascaded one behind the other, each formed from a spinning member and a spinning and transport tube spinning devices are provided between the drafting systems and the knitting systems.

Ein Nachteil der Verarbeitung des auf die beschriebene Weise der Strickmaschine zugeführten Fasermaterials besteht darin, dass Schmutzpartikel, Nissen, Flusen, Kurz- und Fremdfasern sowie andere, lose am Fasermaterial haftende und von diesem mitgeführte Fremdkörper zu Fehlern in der Strickware und zu Verschmutzungen der Maschenbildungsorgane führen können. Anders als beim normalen Spinnen sind keine Spulmaschinen od. dgl. vorhanden, mittels derer Verunreinigungen und andere Fehler im Fasermaterial erkannt und gegebenenfalls durch Aufschneiden des Fasermaterials und nachfolgendes Verspleissen beseitigt werden können.A disadvantage of the processing of the fiber material fed to the knitting machine in the manner described is that dirt particles, nits, lint, short and foreign fibers as well as other foreign bodies adhering loosely to the fiber material and entrained by it lead to defects in the knitted fabric and to contamination of the stitch forming bodies can. Unlike the normal spinning, no winder or the like are present, by means of which impurities and other defects in the fiber material can be detected and optionally eliminated by cutting the fiber material and subsequent splicing.

Entsprechende Nachteile ergeben sich, wenn verstrecktes Fasermaterial den Arbeitsstellen von anderen Maschinen zugeführt wird.Corresponding disadvantages arise when stretched fiber material is supplied to the workstations of other machines.

Aus der GB-A-2 158 108 ist eine Dralldüsenvorrichtung für eine Spinnmaschine bekannt, die von einer Entspannungskammer mit Entlüftungsöffnungen umgeben ist, um Ultraschallwellen zu dämpfen. In die Entspannungskammer münden außerdem Reinigungsöffnungen.From the GB-A-2 158 108 For example, a spinning nozzle apparatus for a spinning machine is known, which is surrounded by a flash chamber with vents to attenuate ultrasonic waves. In the expansion chamber also open cleaning openings.

Das technische Problem der vorliegenden Erfindung besteht darin, die eingangs bezeichnete Vorrichtung so auszubilden, dass sie eine wirksame Reinigung der Faserströme vor deren Eintritt in die Arbeitsstellen der jeweiligen Maschine ermöglicht, unerwünschten Faserflug vermeidet und im Hinblick auf die Fertigungs- und Betriebskosten mit vertretbaren Saug- bzw. Blasströmen realisierbar ist.The technical problem of the present invention is to design the device described at the outset in such a way that it enables efficient cleaning of the fiber streams before they enter the workstations of the respective machine, avoids undesired fiber fly and, with regard to the production and operating costs, with acceptable suction. or blowing currents can be realized.

Gelöst wird dieses Problem mit den kennzeichnenden Merkmalen des Anspruchs 1.This problem is solved by the characterizing features of claim 1.

Die Erfindung bringt den Vorteil mit sich, dass mittels einer zwischen zwei Abschnitten eines Spinn- und Transportrohrs oder zwischen zwei Spinnvorrichtungen angeordneten, als geschlossenes System ausgebildeten Reinigungsstation, die mit Blas- und/oder Saugluft arbeitet, eine wirksame Abfuhr von störendem Faserflug und sonstigen Verunreinigungen erzielt wird. Störungen des Arbeitsprozesses werden dadurch weitgehend reduziert, und auch die Ablagerung von Flusen, Staub und anderen Verunreinigungen an der jeweiligen Maschine wird weitgehend vermieden. Außerdem wird trotz der Anwendung eines geschlossenen Strömungssystems der gewünschte Transport des Fasermaterials zu den Arbeitsstellen nicht beeinträchtigt.The invention has the advantage that arranged by means of a between two sections of a spinning and transport tube or between two spinning devices, designed as a closed system cleaning station, which works with blowing and / or suction, effective removal of interfering fiber fly and other contaminants is achieved. Disturbances of the working process are thereby largely reduced, and also the deposition of lint, dust and other impurities on the respective machine is largely avoided. In addition, despite the use of a closed flow system, the desired transport of the fiber material to the work stations is not impaired.

Weitere vorteilhafte Merkmale der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous features of the invention will become apparent from the dependent claims.

Die Erfindung wird nachfolgend in Verbindung mit den beiliegenden Zeichnungen an Ausführungsbeispielen näher erläutert. Es zeigen:

  • Fig. 1 einen schematischen Längsschnitt durch ein erstes Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung, die an eine Strickmaschine zur Verarbeitung von verstrecktem Fasermaterial angeschlossen ist und eine nach Art eines geschlossenen Strömungssystems ausgebildete Reinigungsstation enthält;
  • Fig. 2 und 3 zwei Ausführungsbeispiele der Reinigungsstation in je einem Schnitt längs der Linie A - A der Fig. 1;
  • Fig. 4 und 5 in Schnitten entsprechend Fig. 2 und 3 eine Reinigungsstation, die eine Drallkammer und ein durch ein Scharnier mit dieser verbundenes Abführrohr aufweist;
  • Fig. 6 bis 8 drei weitere Ausführungsbeispiele der erfindungsgemäßen Vorrichtung in der Fig. 1 entsprechenden Ansichten;
  • Fig. 9 ein Ausführungsbeispiel für die Verbindung einer Drallkammer mit einem ihr zugeordneten Spinn- und Transportrohr;
  • Fig. 10 einen Schnitt längs der Linie B - B der Fig. 9;
  • Fig. 11 eine zusätzlich zur Vorrichtung nach Fig. 1 bis 8 vorhandende Saug- und/oder Blaseinrichtung, die im Bereich einer Strickstelle der Strickmaschine vorgesehen werden kann;
  • Fig. 12 ein Stricksystem der Strickmaschine in einer perspektivischen Darstellung; und
  • Fig. 13 und 14 schematisch eine an der Strickmaschine vorgesehene, Sensoren aufweisende Einrichtung zur Überwachung der Arbeitsweise der Strickmaschine.
The invention will be explained in more detail below in connection with the accompanying drawings of exemplary embodiments. Show it:
  • Fig. 1 a schematic longitudinal section through a first embodiment of a device according to the invention, which is connected to a knitting machine for processing stretched fiber material and includes a formed in the manner of a closed flow system cleaning station;
  • FIGS. 2 and 3 two embodiments of the cleaning station in a respective section along the line A - A of Fig. 1 ;
  • 4 and 5 in sections accordingly FIGS. 2 and 3 a cleaning station having a swirl chamber and a discharge pipe connected thereto by a hinge;
  • Fig. 6 to 8 three further embodiments of the device according to the invention in the Fig. 1 corresponding views;
  • Fig. 9 an embodiment for the connection of a swirl chamber with its associated spinning and transport tube;
  • Fig. 10 a section along the line B - B of Fig. 9 ;
  • Fig. 11 in addition to the device according to Fig. 1 to 8 existing suction and / or blowing device, which can be provided in the region of a knitting point of the knitting machine;
  • Fig. 12 a knitting system of the knitting machine in a perspective view; and
  • FIGS. 13 and 14 schematically a provided on the knitting machine, sensors having means for monitoring the operation of the knitting machine.

Fig. 1 zeigt grob schematisch eine erfindungsgemäße Vorrichtung für eine Maschine, die vorzugsweise eine maschenbildende Maschine und im Ausführungsbeispiel speziell eine Rundstrickmaschine ist, die einen Nadelzylinder 1 mit Stricknadeln 2, ein den Stricknadeln 2 zugeordnetes Strickschloss 3 und einen Fadenführer 4 mit einem Fadenführerloch 5 enthält. Außerdem zeigt Fig. 1 ein Stricksystem der Strickmaschine, an dem die Stricknadeln 2 mit Hilfe des Strickschlosses 3 in eine zur Aufnahme von Fasermaterial 6 geeignete Aufnahmestellung ausgetrieben werden, wobei das Fasermaterial 6 das Fadenführerloch 5 durchläuft. Fig. 1 shows roughly schematically a device according to the invention for a machine, which is preferably a stitch-forming machine and in the embodiment specifically a circular knitting machine containing a needle cylinder 1 with knitting needles 2, a knitting needles 2 associated knitting lock 3 and a yarn guide 4 with a yarn guide hole 5. Also shows Fig. 1 a knitting system of the knitting machine, on which the knitting needles 2 are driven out by means of the knitting lock 3 in a receiving position suitable for receiving fiber material 6, wherein the fiber material 6 passes through the thread guide hole 5.

Das Fasermaterial 6 wird für jedes Stricksystem mit Hilfe je eines Streckwerks 7 erzeugt, von dem in Fig. 1 nur zwei Ausgangswalzen 7a gezeigt sind und dem in nicht dargestellter Weise ein Faserband, eine Flyerlunte od. dgl. zugeführt wird. Ein aus dem Streckwerk 7 kommender, auf eine gewünschte Feinheit verstreckter Faserverband wird im Ausführungsbeispiel einer Spinnvorrichtung 8 zugeführt, die ein Spinnorgan 9, hier ein mit Druckluft pü betriebenes Drallorgan, und ein mit diesem verbundenes Spinn- und Transportrohr 10 enthält. An das Spinn- und Transportrohr 10 schließt sich ein zweites Spinn- und Transportrohr 11 an, das ein im Fadenführerloch 5 endendes Austrittsende aufweist. Mit besonderem Vorteil ist das Eintrittsende des zweiten Spinn- und Transportrohrs 11 mit einem zweiten Spinnorgan 12 verbunden, so dass das Spinnorgan 9 und das Spinn- und Transportrohr 10 die Spinnvorrichtung 8 und das Spinnorgan 12 und Spinn- und Transportrohr 11 eine zweite Spinnvorrichtung 14 bilden, die in Transportrichtung des Fasermaterials 6 auf die Spinnvorrichtung 8 folgt.The fiber material 6 is generated for each knitting system by means of a drafting system 7, of which in Fig. 1 only two output rollers 7a are shown and the not shown in the manner of a sliver, a Flyerlunte od. Like., Is supplied. A coming out of the drafting 7, stretched to a desired fineness fiber structure is supplied in the embodiment of a spinning device 8, which contains a spinning member 9, here a operated with compressed air pü swirl member, and associated with this spinning and transport tube 10. The spinning and transport tube 10 is followed by a second spinning and transport tube 11, which has an outlet end terminating in the thread guide hole 5. With special advantage, the entry end of the second spinning and transport tube 11 is connected to a second spin element 12 so that the spinning element 9 and the spinning and transport tube 10 form the spinning device 8 and the spinning element 12 and spin and transport tube 11 form a second spinning device 14 in the transport direction of the fiber material 6 on the Spinning device 8 follows.

Die Spinnvorrichtung 8 dient dem Zweck, den vom Streckwerk 7 abgegebenen Faserverband in ein temporäres Garn 15 mit echten Drehungen umzuwandeln, die von der zweiten Spinnvorrichtung 14 bis zum Fadenführer 4 aufrecht erhalten werden. In Fasertransportrichtung hinter dem Fadenführer 4 werden die Drehungen durch den Falschdrahteffekt im Wesentlichen wieder aufgelöst, so dass das den Stricknadeln 2 zugeführte Fasermaterial 6 ein weitgehend ungedrehtes Fasermaterial ist.The purpose of the spinning device 8 is to convert the fiber strand discharged from the drafting system 7 into a temporary yarn 15 having true rotations which are maintained from the second spinning device 14 to the yarn guide 4. In the fiber transport direction behind the yarn guide 4, the rotations are substantially resolved again by the false-twist effect, so that the fiber material 6 supplied to the knitting needles 2 is a largely untwisted fiber material.

Rundstrickmaschinen der beschriebenen Art sind z. B. aus den Dokumenten PCT WO 2004/079068 und DE 10 2006 006 502 A1 bekannt, die hiermit zur Vermeidung von Wiederholungen durch Referenz auf sie zum Gegenstand der vorliegenden Offenbarung gemacht werden.Circular knitting machines of the type described are z. B. from the documents PCT WO 2004/079068 and DE 10 2006 006 502 A1 which are hereby made the subject of the present disclosure in order to avoid repetition by reference to them.

Erfindungsgemäß ist zwischen das Austrittsende des Spinn- und Transportrohrs 10 und das Eintrittsende des Spinnorgans 12 eine Reinigungsstation 16 geschaltet, die an eine Sammelleitung 17 angeschlossen ist und der Reinigung und Entflugung des Faserstroms dient. Unter "Reinigung" wird hier verstanden, dass in der Station 16 möglichst alle vom Faserstrom mitgeschleppten Verunreinigungen wie Flusen, Staub, Kurzfasern, Mulm, Schalenteile usw. entfernt werden, ohne den Faserstrom bzw. das temporäre Garn 15 selbst zu schädigen und auf dem Weg zum Fadenführer 4 zu behindern. Die Reinigungsstation 16 ist so mit dem Austrittsende des Spinn- und Transportrohrs 10 und dem Eintrittsende des Spinnorgans 12 verbunden, dass sie mit diesen ein im Wesentlichen geschlossenes Strömungssystem bildet, d. h. die vom Faserstrom abgetrennten Verunreinigungen unmittelbar der Sammelleitung 17 zugeführt werden, ohne an die äußere Umgebung zu gelangen.According to the invention, a cleaning station 16 is connected between the outlet end of the spinning and transport tube 10 and the inlet end of the spinning member 12, which is connected to a manifold 17 and serves to clean and unwind the fiber stream. By "cleaning" is meant here that in the station 16 as possible all entrained by the fiber stream impurities such as lint, dust, short fibers, Mulm, shell parts, etc. are removed without damaging the fiber stream or the temporary yarn 15 itself and on the way to hamper the thread guide 4. The cleaning station 16 is connected to the exit end of the spinning and transport tube 10 and the entrance end of the spinning member 12 so as to form a substantially closed flow system with them, i.e., a flow path. H. the separated from the fiber stream impurities are supplied directly to the manifold 17 without going to the outside environment.

Die Reinigungsstation 16 enthält gemäß Fig. 2 bis 5 vorzugsweise eine von einem Gehäuse umgebene Drallkammer 16a und ein Abführrohr 16b, das gemäß Fig. 4 konisch ausgebildet sein kann. Damit die Reinigungsstation 16 im Falle einer Störung gewartet und repariert werden kann, ist sie z. B. entweder mit einer flexiblen Kupplung 18 (Fig. 1) oder mittels einer Schwenkverbindung (Fig. 4, 5) mit der Sammelleitung 17 verbunden, wobei die Schwenkverbindung gemäß Fig. 4 und 5 auch ein zwischen der Drallkammer 16a und dem Abführrohr 16b angeordnetes Scharmier 19 sein kann, das in Fig. 4 in einer Schließstellung und in Fig. 5 in einer Offenstellung gezeigt ist. Bei Bedarf kann die Anordnung auch so getroffen werden, dass die Reinigungsstation 16 oder die Drallkammer 16a zusammen mit der nachfolgenden Spinnvorrichtung 14 verschwenkt oder verschoben werden kann.The cleaning station 16 includes according to Fig. 2 to 5 Preferably, a swirl chamber 16 a surrounded by a housing and a discharge pipe 16 b, according to Fig. 4 can be conical. So that the cleaning station 16 can be maintained and repaired in the event of a malfunction, it is z. B. either with a flexible coupling 18 ( Fig. 1 ) or by means of a pivot connection ( Fig. 4, 5 ) connected to the manifold 17, wherein the pivotal connection according to 4 and 5 may also be a Scharmier 19 arranged between the swirl chamber 16a and the discharge pipe 16b, which is in Fig. 4 in a closed position and in Fig. 5 is shown in an open position. If necessary, the arrangement can also be made so that the cleaning station 16 or the swirl chamber 16a can be pivoted or moved together with the subsequent spinning device 14.

Die im Wesentlichen als geschlossener Hohlraum ausgebildete Drallkammer 16a ist strömungsmäßig mit dem Spinn- und Transportrohr 10 und dem Spinnorgan 12 verbunden. Sie dient dem Zweck, dass explosionsartig aus dem Transportrohr 10 in sie eintretende Fasermaterial von umherfliegenden Fasern, Verunreinigungen usw. zu befreien und diese über das Abführrohr 16b der Sammelleitung 17 zuzuführen, bevor das Fasermaterial bzw. temporäre Garn 15 in die nächste Spinnvorrichtung 14 eintritt.The swirl chamber 16a, which is designed essentially as a closed cavity, is connected in terms of flow with the spinning and transport tube 10 and the spin element 12. It serves the purpose of freeing explosively from the transport tube 10 into it entering fiber material of flying fibers, impurities, etc. and supply them via the discharge pipe 16b of the manifold 17 before the fiber material or temporary yarn 15 enters the next spinning device 14.

Nach Fig. 2 und 3 ist die Drallkammer 16a vorzugsweise zusätzlich mit einem z. B. vertikal nach oben oder schräg nach unten weisenden Anschlussstutzen 20 bzw. 21 versehen, der tangential zum Spinn- und Transportrohr 10 angeordnet ist. Durch den Anschlussstutzen 20, 21 wird der Drallkammer 16a Druckluft pü zugeführt, die den Ausscheidungsprozess unterstützt und verstärkt. Die durch den Anschlussstutzen 20, 21 zugeführte Druckluft treibt das in die Drallkammer 16a eintretende Fasermaterial zusätzlich in Drehrichtung an, wie die Pfeile in Fig. 2 bis 5 andeuten, während gleichzeitig lose Fasern und dgl. in das Abführrohr 16b getrieben werden. Dadurch wird eine natürliche und sehr effektive Abscheidung von schematisch angedeuteten Verunreinigungen 22 wie z. B. Faserflug, Staub usw. aus dem Faserstrom erreicht, wie in Fig. 2 bis 4 schematisch angedeutet ist.To FIGS. 2 and 3 the swirl chamber 16a is preferably in addition to a z. B. vertically upwards or obliquely downwardly facing connection piece 20 or 21, which is arranged tangentially to the spinning and transport tube 10. Through the connecting piece 20, 21 of the swirl chamber 16a compressed air is fed pü, which supports the excretion process and amplified. The supplied through the connecting piece 20, 21 compressed air drives the entering into the swirl chamber 16a fiber material in addition in the direction of rotation, as the arrows in Fig. 2 to 5 indicate while at the same time loose fibers and the like are driven into the discharge pipe 16b. As a result, a natural and very effective deposition of schematically indicated contaminants 22 such. As fiber fly, dust, etc. reached from the fiber stream, as in Fig. 2 to 4 is indicated schematically.

Die aus dem Faserstrom ausgeschiedenen Verunreinigungen 22 werden mit Hilfe des Abführrohrs 16b und der Sammelleitung 17 abgeführt, die z. B. an eine Zentralabsaugung der Rundstrickmaschine angeschlossen ist, so dass in ihr und gegebenenfalls auch im Abführrohr 16b ein Unterdruck pu herrscht. Alternativ kann die Sammelleitung 17 mit einer Druckluftquelle verbunden werden, um in ihr einen Überdruck pü zu erzeugen, der die Verunreinigungen 22 mitreißt und einer zentralen Sammelstelle zuführt. Da die in der Drallkammer 16a und im Abführrohr 16b vorzusehenden Drücke vergleichsweise niedrig sind, ist auch der durch die Reinigungsstation 16 erforderliche, zusätzliche Energiebedarf gering.The excreted from the fiber stream impurities 22 are removed by means of the discharge pipe 16b and the manifold 17, the z. B. is connected to a Zentralabsaugung the circular knitting machine, so that in her and possibly also in the discharge pipe 16 b, a negative pressure pu prevails. Alternatively, the Manifold 17 are connected to a compressed air source to produce in her an overpressure pü, which entrains the impurities 22 and feeds a central collection point. Since the pressures to be provided in the swirl chamber 16a and in the discharge pipe 16b are comparatively low, the additional energy required by the cleaning station 16 is also small.

Ein zweites Ausführungsbeispiel der erfindungsgemäßen Vorrichtung ist in Fig. 6 dargestellt, in der gleiche Teile mit denselben Bezugszeichen wie in Fig. 1 bis 5 bezeichnet sind. Im Unterschied zu Fig. 1 bis 5 ist die Sammelleitung 17 auf ihrer Rückseite durch ein Verbindungsrohr 17a verlängert. Dieses endet an einer Saugdüse 17b, deren Eintrittsende in unmittelbarer Nähe des Streckwerks 7, insbesondere der Ober- und/oder Unterwalze des Ausgangswalzenpaars 7a angeordnet ist, so dass dort entstehender Faserflug ebenfalls in die Sammelleitung 17 befördert wird. Zweckmäßig ist der Saugdüse 17b eine mit Überdruck pü betriebene Blasdüse 23 zugeordnet, mittels derer die Reinigungswirkung im Bereich des Ausgangswalzenpaars 7a weiter verbessert wird.A second embodiment of the device according to the invention is in Fig. 6 represented in the same parts with the same reference numerals as in Fig. 1 to 5 are designated. In contrast to Fig. 1 to 5 the collecting line 17 is extended on its rear side by a connecting tube 17a. This ends at a suction nozzle 17b, the inlet end of which is arranged in the immediate vicinity of the drafting system 7, in particular the upper and / or lower roller of the pair of output rollers 7a, so that resulting fiber fly is also conveyed into the manifold 17. The suction nozzle 17b is expediently assigned a blow nozzle 23 operated with excess pressure pü, by means of which the cleaning action in the region of the output roller pair 7a is further improved.

Fig. 6 zeigt weiter, dass das zweite Spinn- und Transportrohr 11 hier einen kleineren Durchmesser als das erste Spinnrohr 10 hat. Dadurch steigt das Schluckvolumen im Spinnrohr 10 gegenüber dem Schluckvolumen im Spinnrohr 11 und damit auch die Entflugungs- bzw. Reinigungsleistung. Außerdem kann im stationären Betrieb der Vorrichtung, d. h. nach dem Anspinnen, der Überdruck pü in der Spinndüse 9 reduziert oder auf Null eingestellt werden, in welchem Fall die Reinigungsleistung im Wesentlichen allein vom Unterdruck in der Sammelleitung 17 abhängt und Energie gespart wird. Fig. 6 further shows that the second spinning and transport tube 11 here has a smaller diameter than the first spinning tube 10. As a result, the displacement in the spinning tube 10 increases with respect to the displacement in the spinning tube 11 and thus also the Entflugungs- or cleaning performance. In addition, in the stationary operation of the device, ie after piecing, the overpressure pü in the spinneret 9 can be reduced or set to zero, in which case the cleaning performance depends essentially solely on the negative pressure in the manifold 17 and energy is saved.

Außerdem zeigt Fig. 6, daß die Reinigungsstation 16 eine Drallkammer 16c enthält, die im Gegensatz zu Fig. 1 einen nach unten ragenden, vorzugsweise konisch ausgebildeten Ansatz aufweist, der mit einer kleinen Reinigungs- bzw. Ansaugöffnung 16d versehen ist. Der Ansatz ermöglicht wie in Fig. 1 den Austritt von Verunreinigungen aus dem Faserstrom, während die Reinigungs-Öffnung 16d das Ansaugen von Luft von der Seite der Sammelleitung 17 her ermöglicht, wie durch Pfeile angedeutet ist. Dadurch werden die Verunreinigungen nach oben abgesaugt und am Herabfallen durch die Öffnung 16d gehindert. Insgesamt bildet aber auch die Vorrichtung nach Fig. 6 ein im wesentlichen geschlossenes Strömungssystem.Also shows Fig. 6 in that the cleaning station 16 contains a swirl chamber 16c, which in contrast to Fig. 1 has a downwardly projecting, preferably conically shaped approach, which is provided with a small cleaning or suction port 16d. The approach allows as in Fig. 1 the escape of contaminants from the fiber stream, while the cleaning port 16d, the suction of air from the side of the manifold 17, as indicated by arrows. Thus, the impurities are sucked up and prevented from falling down through the opening 16d. Overall, however, the device is after Fig. 6 a substantially closed flow system.

Alternativ kann an die Reinigungs-Öffnung 16d eine Druckluftleitung angeschlossen werden, um ähnliche Strömungsverhältnisse wie in Fig. 2 und 3 zu schaffen.Alternatively, a compressed air line may be connected to the cleaning port 16d to provide similar flow conditions as in FIG FIGS. 2 and 3 to accomplish.

Eine dritte bevorzugte Ausführungsform der erfindungsgemäßen Vorrichtung ist in Fig. 7 dargestellt. Das Spinn- und Transportrohr 10 weist gegenüber dem Spinn- und Transportrohr 11 wiederum einen größeren Durchmesser auf. Der Unterdruck in der Reinigungsstation 16 ist hoch (pu>>) und liegt in der Größenordnung von Unterdrücken, die beim Ring- und Kompaktspinnen üblich sind. Das Spinnorgan 9 liegt mit minimalem Abstand zu den Ausgangswalzen 7a und ragt in deren Zwickel. Dadurch entsteht ein starker Saugluftstrom im Spinn- und Transportrohr 10, welcher die Ausgangswalzen 7a sauber hält. Die Druckluft im Spinnorgan 9 sorgt für die notwendige Rotation im Spinn- und Transportrohr 10, so dass der Faserflug in der Drallkammer 16a abgeschieden wird. Die Vorrichtung kommt mit wenigen Bauteilen aus.A third preferred embodiment of the device according to the invention is in Fig. 7 shown. The spinning and transport tube 10 has in relation to the spinning and transport tube 11 in turn has a larger diameter. The negative pressure in the cleaning station 16 is high (pu >>) and is on the order of suppressions common in ring and compact spinning. The spinning member 9 is at a minimum distance from the output rollers 7a and projects into the gusset. This creates a strong suction air flow in the spinning and transport tube 10, which keeps the output rollers 7a clean. The compressed air in the spinning member 9 provides the necessary rotation in the spinning and transport tube 10, so that the fiber fly is deposited in the swirl chamber 16a. The device comes with few components.

Es wird vorzugsweise so verfahren, dass der anliegende Unterdruck in der Anlaufphase der Maschine reduziert ist.It is preferably moved so that the applied negative pressure is reduced in the startup phase of the machine.

Der Druck im Spinnorgan 12 wird zweckmäßig so eingestellt, dass die Spinnspannung so stark ist, dass das rotierende temporäre Garn 15 die Wandungen des Spinn- und Transportrohrs 10 nicht berührt. Mit einer derartigen Anordnung lassen sich große Gesamtlängen L der Spinnvorrichtung 8 realisieren, ohne dass der Spinnprozess leidet, so dass die Spinnvorrichtung 8 eine Länge L > K aufweisen kann, wobei K die Länge der Spinnvorrichtung 14 ist. Insbesondere kann die Länge des Spinn- und Transportrohrs 10 größer als die Länge des Spinn- und Transportrohrs 11 sein.The pressure in the spinning member 12 is suitably adjusted so that the spinning tension is so strong that the rotating temporary yarn 15 does not touch the walls of the spinning and transport tube 10. With such an arrangement, large overall lengths L of the spinning device 8 can be realized without the spinning process suffering, so that the spinning device 8 can have a length L> K, where K is the length of the spinning device 14. In particular, the length of the spinning and transport tube 10 may be greater than the length of the spinning and transport tube 11.

Fig. 8 zeigt ein viertes Ausführungsbeispiel der erfindungsgemäßen Vorrichtung, das vorzugsweise zur Anwendung kommt, wenn besonders lange erste Spinn- und Transportrohre 10 erwünscht sind. In diesem Fall wird das Spinn- und Transportrohr 10 vorzugsweise in wenigstens zwei Abschnitte 10a, 10b mit den Längen L1 und L2 unterteilt und die Reinigungsstation 16 zwischen den beiden Abschnitten 10a, 10b angeordnet. An den Abschnitt 10b schließt sich wie in den anderen Ausführungsbeispielen die zweite Spinnvorrichtung 14 mit reduzierter Länge K1 an. Fig. 8 shows a fourth embodiment of the device according to the invention, the is preferably used when particularly long first spinning and transport tubes 10 are desired. In this case, the spinning and transport tube 10 is preferably divided into at least two sections 10a, 10b with the lengths L1 and L2 and the cleaning station 16 is arranged between the two sections 10a, 10b. As in the other exemplary embodiments, the second spinning device 14 of reduced length K1 adjoins the section 10b.

Fig. 9 und 10 zeigen ein weiteres Ausführungsbeispiel für die Gestaltung einer Reinigungsstation 24, die eine Drallkammer 24a enthält, die hier mit mit einem Abführrohr 24b fest verbunden ist, das über eine Kupplung 25 starr mit der Sammelleitung 17 oder einem Maschinenteil verbunden sein kann. Die Drallkammer 24a ist an einem Austrittsende z. B. mit dem Abschnitt 10b (Fig. 8) des Spinn- und Transportrohrs verbunden, während sie an einem Eintrittsende eine vorzugsweise kreisrunde Öffnung 26 aufweist, die im Schnitt nach Fig. 10 gestrichelt angedeutet ist. Der Abschnitt 10a des Spinn- und Transportrohrs ist koaxial zur Öffnung 26 angeordnet, endet jedoch gemäß Fig. 9 mit einem gewissen axialen Abstand vor dieser Öffnung 26. Außerdem ist auf dem Abschnitt 10a ein rohrförmiges Verlängerungsstück 27 verschiebbar gelagert, dessen Innendurchmesser im Wesentlichen dem Außendurchmesser des Abschnitts 10a entspricht. Dieses Verlängerungsstück 27 kann entsprechend Fig. 9 über das Vorderende des Abschnitts 10a hinaus bis in die Öffnung 26 geschoben werden, in der es eine Betriebsstellung einnimmt und wie in den anderen Ausführungsbeispielen dafür sorgt, dass die Reinigungsstation 24 mit den Aus- bzw. Eintrittsenden der Abschnitte 10a, 10b strömungsmäßig ein im Wesentlichen geschlossenes System bildet. Das Verlängerungsstück 27 kann jedoch, falls eine Reinigung, Reparatur oder Wartung der Reinigungsstation 24 erforderlich ist, auf dem Abschnitt 10a des Spinn- und Transportrohrs teleskopartig zurück- und aus der Öffnung 26 herausgezogen werden, wie ein Doppelpfeil in Fig. 9 andeutet. Im Übrigen kann die Drallkammer 24a analog zu Fig. 2 z. B. mit einem Anschlussstutzen 20 für Druckluft pü versehen sein. Außerdem ist es natürlich auch möglich, die Reinigungsstation 24 analog zu Fig. 1 zwischen zwei Spinnvorrichtungen (z. B. 8 und 14) zu montieren. Ein Vorteil dieses Ausführungsbeispiels besteht darin, dass die Reinigungsstation 24 und der nachfolgende Rohrabschnitt 10b bzw. das nachfolgende Drallorgan 12 starr angeordnet werden können. FIGS. 9 and 10 show a further embodiment of the design of a cleaning station 24, which includes a swirl chamber 24a, which is firmly connected here with a discharge pipe 24b, which may be connected via a coupling 25 rigidly connected to the manifold 17 or a machine part. The swirl chamber 24a is at an exit end z. With the section 10b ( Fig. 8 ) of the spinning and transport tube, while having at one inlet end a preferably circular opening 26, which in section to Fig. 10 indicated by dashed lines. The section 10a of the spinning and transport tube is arranged coaxially with the opening 26, but ends according to Fig. 9 with a certain axial distance in front of this opening 26. In addition, a tubular extension piece 27 is slidably mounted on the portion 10a, whose inner diameter substantially corresponds to the outer diameter of the portion 10a. This extension piece 27 may accordingly Fig. 9 beyond the leading end of the portion 10a, into the opening 26 where it assumes an operative position and, as in the other embodiments, ensures that the cleaning station 24 is substantially fluidly in communication with the exit ends of the portions 10a, 10b closed system forms. The extension piece 27, however, if cleaning, repair or maintenance of the cleaning station 24 is required, can be telescoped back and forth on the portion 10a of the spinning and transport tube from the opening 26, such as a double arrow in FIG Fig. 9 suggests. Incidentally, the swirl chamber 24a analogous to Fig. 2 z. B. be provided with a connecting piece 20 for compressed air pü. In addition, it is of course also possible, the cleaning station 24 analogous to Fig. 1 between two spinning devices (eg 8 and 14). An advantage of this embodiment is that the cleaning station 24 and the subsequent pipe section 10b and the subsequent twisting element 12 can be arranged rigidly.

Die beschriebenen Reinigungsstationen 16, 24 stellen ein wirksames Mittel dar, um naturgemäß auftretenden Faserflug im Bereich der Übergangsstellen zwischen zwei Spinnvorrichtungen 8, 14 oder zwei Rohrabschnitten 10a, 10b derselben Spinnvorrichtung 8 abzufangen, so dass freie Fasern, Staub usw., d. h. die Verunreinigungen 22 nicht in die Umgebung gelangen, sondern einer Zentralabsaugung od. dgl. zugeleitet werden. Mit Hilfe der zugeführten Druckluft durch die Anschlussstutzen 20, 21 (Fig. 2 und 3) wird dieser Vorgang weiter gefördert.The described cleaning stations 16, 24 provide an effective means to intercept naturally occurring fiber fly in the area of the transition points between two spinning devices 8, 14 or two pipe sections 10a, 10b of the same spinning device 8, so that free fibers, dust, etc., ie the impurities 22nd do not enter the environment, but a central suction od. Like. Are fed. With the help of the supplied compressed air through the connecting pieces 20, 21 ( FIGS. 2 and 3 ) this process is further promoted.

Fig. 11 zeigt das auch aus Fig. 1 ersichtliche Stricksystem in vergrößertem Maßstab. An der Mündung des im Fadenführerloch 5 endenden Spinn- und Transportrohrs 11 entweicht die mittels des Drallorgans zugeführte Luft rotierend und explosionsartig, wodurch im oder am Fasermaterial 6 verbliebene Flusen, Schalenteile od. dgl. ähnlich wie in den Drallkammern 16a, 24a abgesondert werden. Diese Verunreinigungen können allerdings Ablagerungen 28 auf dem Strickschloss 3 bilden. Außerdem können extrem kurze Fasern (Mulm) weitere Ablagerungen 29 zwischen dem Nadelzylinder 1 und dem Strickschloss 3 bilden. Zur Vermeidung dieses Nachteils ist in Weiterbildung der Erfindung ein an der Oberseite des Strickschlosses 3 angeordneter, vorzugsweise ebenfalls an die Zentralabsaugung angeschlossener Absaugkanal 30 vorgesehen, dessen Absaugöffnung 30a dort liegt, wo sich die Ablagerungen 28 bevorzugt bilden. Dadurch können die die Ablagerungen 28 bildenden Verunreinigungen wirksam abgesaugt werden. Zusätzlich können im Strickschloss 3 und im Nadelzylinder 1 Druckluftkanäle 31, 32 vorgesehen sein, die im Zwischenraum zwischen dem Strickschloss 3 und dem Nadelzylinder 1 enden und an eine Druckluftquelle pü angeschlossen werden können. Dadurch ist es möglich, die die Ablagerungen 29 bildenden Verunreinigungen aufzuwirbeln, wodurch diese Verunreinigungen ebenfalls in den Absaugkanal 30 gelangen. Die Absaug- und Druckluftkanäle 30 bis 32 können im Betrieb der Rundstrickmaschine je nach Bedarf intermittierend oder permanent eingeschaltet werden und halten das Stricksystem weitgehend frei von ungewünschten Verunreinigungen und Fig. 11 that shows too Fig. 1 apparent knitting system on an enlarged scale. At the mouth of the spinning and transport tube 11 ending in the thread guide hole 5, the air supplied by means of the twist element escapes in a rotating and explosive manner, whereby fluff, shell parts or the like remaining in or on the fiber material 6 are separated out as in the swirl chambers 16a, 24a. However, these contaminants may form deposits 28 on the knitting lock 3. In addition, extremely short fibers (Mulm) can form further deposits 29 between the needle cylinder 1 and the knitting cam 3. To avoid this disadvantage, a further arranged at the top of the knitting lock 3, preferably also connected to the central suction suction duct 30 is provided in a further development of the invention, the suction opening 30a is located where the deposits 28 preferably form. As a result, the deposits 28 forming impurities can be effectively sucked. In addition, compressed air channels 31, 32 may be provided in the knitting cam 3 and in the needle cylinder 1, which end in the space between the knitting cam 3 and the needle cylinder 1 and can be connected to a compressed air source pü. This makes it possible to whirl up the impurities 29 forming impurities, whereby these impurities also get into the suction channel 30. The suction and compressed air channels 30 to 32 can be turned on intermittently or permanently as needed during operation of the circular knitting machine and keep the knitting system largely free of unwanted contaminants and

Faserflug. Vorzugsweise ist für diesen Zweck eine frei programmierbare Steuervorrichtung vorgesehen.Fiber fly. Preferably, a freely programmable control device is provided for this purpose.

Fig. 12 zeigt grob schematisch und perspektivisch den Faserstrom zwischen dem Fadenführerloch 5 und den Stricknadeln 2. Aus dem Fadenführerloch 5 entweicht Luft unter hoher Rotation tangential und explosionsartig. Gleichzeitig wird das Fasermaterial 6 in die vorbeilaufenden Stricknadeln 2 eingelegt. Beidseitig der Mittelachse des Faserstroms erfährt dieser allerdings eine allmähliche Querschnittserweiterung durch Teilströme 33 und 34 mit einem Austrittswinkel 35. Es versteht sich, dass die Qualität des Gestricks und die Laufsicherheit der Rundstrickmaschine um so größer sind, je kleiner der Austrittswinkel 35 ist. Fig. 12 shows roughly schematically and in perspective the fiber flow between the yarn guide hole 5 and the knitting needles 2. From the yarn guide hole 5 escapes air under high rotation tangentially and explosively. At the same time, the fiber material 6 is inserted into the passing knitting needles 2. However, on both sides of the central axis of the fiber flow, this undergoes a gradual increase in cross-section through partial flows 33 and 34 with an exit angle 35. It is understood that the smaller the exit angle 35, the greater the quality of the knitted fabric and the running reliability of the circular knitting machine.

In bevorzugter Weiterbildung der Erfindung wird ein kleinerer Austrittswinkel 35 dadurch erreicht, dass unterhalb des Fadenführerlochs 5 ein Belüftungskanal 36, ein Leitblech od. dgl. angeordnet wird, dem mittels einer Leitung 37 Druckluft zugeführt wird. Der Belüftungskanal 36 läuft im Bereich des Austrittswinkels 35 sanft aus und ist so geformt, dass der Austrittswinkel 35 insgesamt reduziert wird.In a preferred embodiment of the invention, a smaller exit angle 35 is achieved in that od below the yarn guide hole 5, a ventilation duct 36, a baffle. The like. Is arranged, which is supplied by means of a line 37 compressed air. The ventilation channel 36 runs smoothly in the region of the exit angle 35 and is shaped such that the exit angle 35 is reduced overall.

Im Übrigen sind in Fig. 12 zwischen den nur schematisch angedeuteten Stricknadeln 2 auch übliche Platinen 38 angedeutet, die in einem nicht dargestellten, dem Nadelzylinder 1 (Fig. 1) zugeordneten Platinenring angeordnet sind. Außerdem zeigt ein Pfeil v die Richtung an, in der sich die Stricknadeln 2 und Platinen 38 zusammen mit dem Nadelzylinder 1 bewegen.Incidentally, in Fig. 12 between the only schematically indicated knitting needles 2 and conventional boards 38 indicated that in a not shown, the needle cylinder 1 (Fig. Fig. 1 ) associated circuit board ring are arranged. In addition, an arrow v indicates the direction in which the knitting needles 2 and sinkers 38 move together with the needle cylinder 1.

Fig. 13 und 14 zeigen Mittel zur Überwachung des Strickvorgangs im Bereich eines Stricksystems. Ein erster Sensor 39 ist unmittelbar neben dem Fadenführerloch 5 angeordnet und überwacht den ordnungsgemäßen Austritt des Fasermaterials 6 aus diesem. Tritt kein temporäres Garn aus dem Fadenführerloch 5 aus, gibt der Sensor 39 ein Fehlersignal ab. Ein zweiter Sensor 40 detektiert, ob die Zungen der als Zungennadeln vorausgesetzten Stricknadeln 2 in der Austriebsphase ordnungsgemäß geöffnet sind. Bleibt eine Zunge geschlossen, gibt der Sensor 40 ein Fehlersignal ab. Außerdem ist vorzugsweise eine optische Überwachungseinrichtung für den zwischen dem Fadenführerloch 5 und einem Kulierpunkt des betreffenden Stricksystems vorhandenen Faserstrom vorgesehen. Die Überwachungseinrichtung tastet mit Hilfe bekannter Bild- und Mustererkennungsmittel einen Bildrahmen 41 (Fig. 14) ab, innerhalb von dem bei ordnungsgemäßer Zufuhr des Fasermaterials 6 ein bestimmtes Muster insbesondere für dessen Querschnittsform erwartet wird. Ein gestörtes Muster führt zu einem weiteren Fehlersignal. Aufgrund der heutigen Schnelligkeit der Bildverarbeitung kann diese Überwachung in Echtzeit erfolgen. FIGS. 13 and 14 show means for monitoring the knitting process in the area of a knitting system. A first sensor 39 is disposed immediately adjacent to the yarn guide hole 5 and monitors the proper exit of the fiber material 6 therefrom. If no temporary yarn emerges from the yarn guide hole 5, the sensor 39 emits an error signal. A second sensor 40 detects whether the tongues of the knitting needles 2 presupposed as latch needles are properly opened in the ejection phase. If a tongue remains closed, the sensor 40 emits an error signal. In addition, an optical monitoring device is preferably provided for the existing between the yarn guide hole 5 and a culmination of the respective knitting system fiber stream. The monitoring device uses image and pattern recognition means to scan a picture frame 41 (FIG. Fig. 14 ), within which, with proper supply of the fiber material 6, a particular pattern is expected, in particular for its cross-sectional shape. A faulty pattern leads to another error signal. Due to today's speed of image processing, this monitoring can be done in real time.

Die Erzeugung eines der genannten Fehlersignale führt zum möglichst sofortigen Stillsetzen des betreffenden Stricksystems, an dem der Fehler aufgetreten ist, oder zum Abschalten der Rundstrickmaschine, um etwaige Schäden, insbesondere in der herzustellenden Maschenware, möglichst klein zu halten.The generation of one of said error signals leads to the immediate shutdown of the relevant knitting system where the error has occurred, or to shutdown the circular knitting machine to minimize any damage, especially in the knitted fabric to be produced.

Die Erfindung ist nicht auf die beschriebenen Ausführungsbeispiele beschränkt, die auf vielfache Weise abgewandelt werden können. Dies gilt zunächst für die beispielhaft dargestellte Rundstrickmaschine, an deren Stelle auch andere maschenbildende Maschinen wie z. B. Flachstrick- oder zweifonturigen Rundstrickmaschinen angewendet werden können. Weiterhin können anstelle der mit Drallorganen arbeitenden Spinnvorrichtungen auch andere, insbesondere z. B. Luft-Spinnvorrichtungen vorgesehen werden. Auch bei anderen Maschinen, denen verstreckte Fasermaterialien zugeführt werden sollen, lässt sich die Erfindung nutzbringend anwenden. An die Stelle der Stricksysteme oder Maschenbildungsstellen treten hier andere Arbeitsstellen. Weiter ist klar, dass für den Fall, dass mehr als zwei Spinnvorrichtungen oder Abschnitte eines Spinn- und Transportrohrs vorhanden sind, zweckmäßig in allen Zwischenräumen zwischen diesen je eine beschriebene Reinigungsstation angeordnet wird. Ferner stellen die anhand der Fig. 1 bis 10 beschriebenen Reinigungsstationen nur bevorzugte Ausführungsbeispiele dar, von denen in mannigfacher Weise abgewichen werden kann. Schließlich versteht sich, dass die verschiedenen Merkmale auch in anderen als den beschriebenen und dargestellten Kombinationen angewendet werden können.The invention is not limited to the described embodiments, which can be modified in many ways. This applies initially to the circular knitting machine shown as an example, in place of other mesh-forming machines such. B. flat knit or Zweonturigen circular knitting machines can be applied. Furthermore, instead of working with twisting devices spinning devices also other, in particular z. B. air-spinning devices are provided. In other machines, which are to be fed stretched fiber materials, the invention can be used profitably. The knitting systems or knitting stations are replaced by other jobs. It is also clear that in the event that more than two spinning devices or sections of a spinning and transport tube are present, it is expedient to arrange a cleaning station described in each intermediate space between them. Furthermore, the basis of the Fig. 1 to 10 cleaning stations described only preferred embodiments of which can be deviated in manifold ways. Finally, it is understood that the various features may be applied in combinations other than those described and illustrated.

Claims (8)

  1. Apparatus for delivering drawn fibre material (6) to a workstation of a machine that processes the fibre material (6), containing a drawing system (7) and at least one spinning apparatus (8, 14) which is arranged downstream of said drawing system in a transportation direction for the fibre material (6) and comprises a spinning member (9, 12) for producing a yarn (15) and a spinning and transportation tube (10, 11), connected to the spinning member (9, 12), for transferring the yarn (15) to the workstation, characterised in that a cleaning station (16, 24), which is connected to a collecting line (17) and is used for cleaning and fluff removal purposes, is connected between two consecutive portions (10a, 10b) of the spinning or transportation tube (10, 11) or between two consecutive spinning apparatuses (8, 14), which cleaning station contains a twisting chamber (16a, 24a) and a discharge tube (16b, 24b) and is connected to associated output and input ends of the portions (10a, 10b) or of the spinning apparatuses (8, 14) such that said cleaning station forms a substantially closed flow system.
  2. Apparatus according to claim 1, characterised in that the twisting chamber (16a, 24a) is provided with a tangentially engaging connection piece (20, 21) that is used to supply compressed air.
  3. Apparatus according to either claim 1 or claim 2, characterised in that the collecting line (17) comprises at least one suction and/or blowing nozzle (17b, 23), which is arranged in the region of at least one outlet roller (7a) of the drawing system (7) and is used to remove fibre fluff that accrues in said region.
  4. Apparatus according to any of claims 1 to 3, characterised in that the cleaning station (16, 24) is arranged between two portions (10a, 10b) of a spinning and transportation tube, and an output end of one of the two portions (10a), which end is connected to the cleaning station (16, 24), is provided with a lengthening piece (27), which projects into an opening (26) in the twisting chamber (16a, 24a) and can be telescopically pulled out of the twisting chamber (16a, 24a) for maintenance purposes.
  5. Apparatus, in particular according to any of claims 1 to 4, the machine being a knitting machine, and the spinning and transportation tube (11) which is the last in the transportation direction of the fibre material (6) ending at a thread guide (4) of the knitting machine, which is arranged in the region of a knitting lock (3), characterised in that at least one suction and/or blowing device (30 to 32) used for preventing fibre deposits (28, 29) is arranged in the region of the knitting lock (3).
  6. Apparatus according to claim 5, characterised in that an output end of the spinning and transportation tube (11) which is the last in the transportation direction of the fibre material (6) ends in a thread guide hole (5) of the thread guide, and said output end is associated with a ventilation channel (36), which is connected to a compressed air line (37) and is used to reduce the output angle (35) of the fibre material (6) being output from the output end.
  7. Apparatus, in particular according to either claim 5 or claim 6, characterised in that at least one sensor (39, 40) for monitoring the fibre material (6) and/or the needle latches of knitting needles (2) is arranged near to the thread guide (4).
  8. Apparatus according to any of claims 5 to 7, characterised in that the knitting machine is provided with knitting needles (2), and a pattern recognition system intended for monitoring a preselected pattern of the fibre material (6) is provided between the thread guide (4) and the knitting needles (2).
EP08734456.0A 2007-04-16 2008-04-03 Device for delivering drawn fiber material to a workstation of a machine processing said fiber material Active EP2142690B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007018369A DE102007018369A1 (en) 2007-04-16 2007-04-16 Spinning system and method for spinning knitting
PCT/DE2008/000567 WO2008125079A2 (en) 2007-04-16 2008-04-03 Device for delivering drawn fiber material to a workstation of a machine processing said fiber material

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EP2142690A2 EP2142690A2 (en) 2010-01-13
EP2142690B1 true EP2142690B1 (en) 2017-07-12

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DE (1) DE102007018369A1 (en)
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DE102007039870A1 (en) 2007-08-21 2009-02-26 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Device for transporting fiber material between a drafting system and a stitch-forming machine and circular knitting machine equipped therewith
DE102011053396B3 (en) 2011-09-08 2012-08-23 Terrot Gmbh Knitted fabric producing device for use with knitting machine, has pinch rollers are rotatable in opposite direction, so as to withdraw solidified silver roving from spinning nozzle device to knitting machine
DE102015001412B3 (en) * 2015-02-06 2016-04-21 ITA Technologietransfer GmbH A method of feeding a staple fiber ribbon to a laying head, textile machine and method of retrofitting a textile machine

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US4107911A (en) * 1976-06-18 1978-08-22 Murata Kikai Kabushiki Kaisha Pneumatic spinning apparatus
JPS5932606Y2 (en) * 1981-10-13 1984-09-12 村田機械株式会社 Air rectifier plate at the tip of the air nozzle in a pneumatic spinning device
CS242953B1 (en) * 1984-04-26 1986-05-15 Alois Stejskal Spinning nozzle mechanism
CS269174B1 (en) * 1988-04-21 1990-04-11 Havranek Zdenek Spinning jet for yarn's pneumatic formation
EP1279756A3 (en) * 2001-07-27 2003-11-12 Maschinenfabrik Rieter Ag Pneumatic spinning device and pneumatic spinning method
ES2558304T3 (en) * 2003-03-06 2016-02-03 Reinhard KÖNIG Knitwear as well as procedure and device for its manufacture

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Publication number Publication date
WO2008125079A3 (en) 2008-12-24
EP2142690A2 (en) 2010-01-13
TW200916619A (en) 2009-04-16
TWI457480B (en) 2014-10-21
WO2008125079A2 (en) 2008-10-23
DE102007018369A1 (en) 2008-10-23

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