EP2142690A2 - Dispositif de livraison d'un matériau fibreux étiré à un poste de travail d'une machine de traitement des matériaux fibreux - Google Patents

Dispositif de livraison d'un matériau fibreux étiré à un poste de travail d'une machine de traitement des matériaux fibreux

Info

Publication number
EP2142690A2
EP2142690A2 EP08734456A EP08734456A EP2142690A2 EP 2142690 A2 EP2142690 A2 EP 2142690A2 EP 08734456 A EP08734456 A EP 08734456A EP 08734456 A EP08734456 A EP 08734456A EP 2142690 A2 EP2142690 A2 EP 2142690A2
Authority
EP
European Patent Office
Prior art keywords
spinning
fiber material
knitting
transport tube
fiber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08734456A
Other languages
German (de)
English (en)
Other versions
EP2142690B1 (fr
Inventor
Georg KÖNIG
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2142690A2 publication Critical patent/EP2142690A2/fr
Application granted granted Critical
Publication of EP2142690B1 publication Critical patent/EP2142690B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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.
  • Knit knitting machines for example PCT WO 2004/079068, PCT WO 2007/093165 A2, PCT WO 2007/093166 A2). These are characterized by the fact that the knitwear is not made of conventional, twisted yarns, but of a fiber sliver, Flyerlunte.
  • 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 example, 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 produced, a sufficiently soft knit fabric is nevertheless obtained.
  • a disadvantage of the processing of the fiber material fed to the knitting machine in the described manner 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.
  • the technical problem of the present invention is to design the device described at the outset in such a way that it enables effective 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 rates. 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 a schematic longitudinal section through a first exemplary embodiment of a device according to the invention, which is connected to a knitting machine for processing stretched fiber material and contains a cleaning station designed in the manner of a closed flow system;
  • Figures 2 and 3 show two embodiments of the cleaning station in a respective section along the line A - A of Fig. 1.
  • 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 Figure 5 of Figure 1 corresponding views ..;
  • FIG. 9 shows an exemplary embodiment of the connection of a swirl chamber with a spinning and transport tube assigned to it
  • Fig. 10 is a section along the line B - B of Fig. 9; 11 shows a suction and / or blowing device, which is present in addition to the device according to FIGS. 1 to 8 and can be provided in the region of a knitting point of the knitting machine;
  • FIG. 12 shows a knitting system of the knitting machine in a perspective representation
  • Fig. 1 shows a rough schematic device according to the invention for a machine, which is preferably a stitch-forming machine and in the exemplary embodiment specifically a circular knitting machine, a Nadelzy cylinder 1 with knitting needles 2, a knitting needles 2 associated knitting lock 3 and a yarn guide 4 with a Fadenvigerloch. 5 contains. 1 also shows a knitting system of the knitting machine on which the knitting needles 2 are driven out by means of the knitting lock 3 into 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 od in a manner not shown, a sliver, a Flyerlunte. The like.
  • 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. Example, from the documents PCT WO 2004/079068 and DE 10 2006 006 502 Al known, which are hereby made to avoid repetition by reference to them the subject of the present disclosure.
  • 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 remnant station 16 preferably contains a swirl chamber 16a surrounded by a housing and a discharge pipe 16b, which may be conical according to FIG. So that the cleaning station 16 can be maintained and repaired in the event of a malfunction, it is z.
  • a flexible coupling 1 or by means of a pivoting connection (FIGS. 4, 5) to the collecting line 17, wherein the pivoting connection according to FIGS. 4 and 5 can also be a Scharmier 19 arranged between the swirl chamber 16a and the discharge pipe 16b in Fig. 4 in a closed position and in Fig. 5 is shown in an open position.
  • the arrangement can also be made so that the cleaning station 16 or the swirl chamber 16a together with the subsequent spinning device 14 ver pivots or can be moved.
  • 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 indicated by the arrows in Fig. 2 to 5, while 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 indicated schematically in Fig. 2 to 4.
  • 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 central suction of 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 exemplary embodiment of the device according to the invention is shown in FIG. 6, in which the same parts are designated by the same reference numerals as in FIGS. 1 to 5.
  • 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 PU in the spinneret 9 is 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 that the cleaning station 16 includes 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.
  • the impurities are sucked up and prevented from falling down through the opening 16d.
  • the device according to FIG. 6 also forms a substantially closed flow system.
  • a pressure air duct may be connected to the cleaning port 16d to provide similar flow conditions as in FIGS. 2 and 3.
  • FIG. 1 A third preferred embodiment of the device according to the invention is shown in FIG.
  • 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 that are 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 exemplary 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 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.
  • FIG. 9 and 10 show a further embodiment for the design of a cleaning station 24, which contains a swirl chamber 24a, which is firmly connected here with a discharge pipe 24b, which can be rigidly connected via a coupling 25 to the manifold 17 or a machine part.
  • the swirl chamber 24a is at an exit end z. B. with the portion 10 b (Fig. 8) of the spinning and transport tube, while having at one entrance end a preferably circular opening 26 which is indicated by dashed lines in the section of FIG.
  • the section 10a of the spinning and transport tube is arranged coaxially to 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 is substantially the outer diameter of section 10a.
  • This extension piece 27 can be pushed as shown in FIG. 9 beyond the front end of the portion 10 a out into the opening 26 in which it occupies an operating position and, as in the other embodiments, ensures that the cleaning station 24 with the exit and entry ends of the Portions 10a, 10b fluidly forms a substantially closed system.
  • the swirl chamber 24a analogous to FIG.
  • 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., d. H. the impurities 22 do not get into the environment, but a central suction od. Like. Are fed. With the help of the compressed air supplied through the connecting pieces 20, 21 (FIGS. 2 and 3), this process is further promoted.
  • FIG. 11 shows the knitting system also shown in FIG. 1 on an enlarged scale.
  • the air supplied by the swirl member 12 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, similar to 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.
  • 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 below the Fadenschreiberlochs 5, a ventilation duct 36, a baffle od. 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 also common circuit boards 38 are indicated, which are arranged in a not shown, the Nadelzylin--1 (Fig. 1) associated circuit board ring.
  • an arrow v indicates the direction in which the knitting needles 2 and sinkers 38 move together with the needle cylinder 1.
  • Figures 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 reed needles are properly opened in the Austtiebsphase. 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 scans with the aid of known image and pattern recognition means an image frame 41 (FIG. 14) within which, when the fiber material 6 is properly supplied, a specific pattern, in particular for its cross-sectional shape, is expected. 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. Next it is clear that in the event that more than two spinning devices or

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

Abstract

L'invention concerne un dispositif, convenant notamment pour des machines à tricoter, de livraison d'un matériau fibreux étiré (6). Le dispositif comprend un banc d'étirage (7) et, monté en aval, au moins un dispositif de filature (8, 14) présentant un organe de torsion (9, 12) pour la production d'un fil temporaire (15), et un tube de filage et de transport (10, 11) relié à l'organe de torsion (9, 12) pour acheminer le fil temporaire (15), en particulier vers une machine à tricoter. Entre deux sections successives du tube de filage et de transport, ou entre deux dispositifs de filature successifs (8, 14) est prévue une station de nettoyage (16a) raccordée à une conduite collectrice (17) servant au nettoyage et à l'aspiration, et qui forme, avec les extrémités correspondantes des sections ou des dispositifs de filature (8, 14), un système d'écoulement sensiblement fermé.
EP08734456.0A 2007-04-16 2008-04-03 Dispositif de livraison d'un matériau fibreux étiré à un poste de travail d'une machine de traitement des matériaux fibreux Not-in-force EP2142690B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007018369A DE102007018369A1 (de) 2007-04-16 2007-04-16 Spinnsystem und Verfahren für das Spinnstricken
PCT/DE2008/000567 WO2008125079A2 (fr) 2007-04-16 2008-04-03 Dispositif de livraison d'un matériau fibreux étiré à un poste de travail d'une machine de traitement des matériaux fibreux

Publications (2)

Publication Number Publication Date
EP2142690A2 true EP2142690A2 (fr) 2010-01-13
EP2142690B1 EP2142690B1 (fr) 2017-07-12

Family

ID=39767849

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08734456.0A Not-in-force EP2142690B1 (fr) 2007-04-16 2008-04-03 Dispositif de livraison d'un matériau fibreux étiré à un poste de travail d'une machine de traitement des matériaux fibreux

Country Status (4)

Country Link
EP (1) EP2142690B1 (fr)
DE (1) DE102007018369A1 (fr)
TW (1) TWI457480B (fr)
WO (1) WO2008125079A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007039870A1 (de) * 2007-08-21 2009-02-26 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Vorrichtung zum Transport von Fasermaterial zwischen einem Streckwerk und einer maschenbildenden Maschine und damit ausgerüstete Rundstrickmaschine
DE102011053396B3 (de) 2011-09-08 2012-08-23 Terrot Gmbh Vorrichtung und Verfahren zur Herstellung von Maschenware
DE102015001412B3 (de) 2015-02-06 2016-04-21 ITA Technologietransfer GmbH Verfahren zum Zuführen eines Stapelfaserbands zu einem Legekopf, Textilmaschine und Verfahren zum Nachrüsten einer Textilmaschine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4107911A (en) * 1976-06-18 1978-08-22 Murata Kikai Kabushiki Kaisha Pneumatic spinning apparatus
JPS5932606Y2 (ja) * 1981-10-13 1984-09-12 村田機械株式会社 空気式紡績装置における空気ノズル先端部の空気の整流板
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 (fr) * 2001-07-27 2003-11-12 Maschinenfabrik Rieter Ag Dispositif de filage pneumatique et procédé de filage pneumatique
WO2004079067A2 (fr) * 2003-03-06 2004-09-16 Koenig Reinhard Tissu maille

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008125079A2 *

Also Published As

Publication number Publication date
EP2142690B1 (fr) 2017-07-12
TWI457480B (zh) 2014-10-21
WO2008125079A3 (fr) 2008-12-24
DE102007018369A1 (de) 2008-10-23
WO2008125079A2 (fr) 2008-10-23
TW200916619A (en) 2009-04-16

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