EP2530193A1 - Dispositif d'aspiration pour chariots de service pour machines de filature à fibres libérées - Google Patents

Dispositif d'aspiration pour chariots de service pour machines de filature à fibres libérées Download PDF

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Publication number
EP2530193A1
EP2530193A1 EP12169156A EP12169156A EP2530193A1 EP 2530193 A1 EP2530193 A1 EP 2530193A1 EP 12169156 A EP12169156 A EP 12169156A EP 12169156 A EP12169156 A EP 12169156A EP 2530193 A1 EP2530193 A1 EP 2530193A1
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EP
European Patent Office
Prior art keywords
suction
yarn
generating
providing
spinning
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
EP12169156A
Other languages
German (de)
English (en)
Other versions
EP2530193B1 (fr
Inventor
Vittorio Colussi
Roberto Badiali
Mauro Ceolin
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.)
Savio Macchine Tessili SpA
Original Assignee
Savio Macchine Tessili SpA
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.)
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Application filed by Savio Macchine Tessili SpA filed Critical Savio Macchine Tessili SpA
Publication of EP2530193A1 publication Critical patent/EP2530193A1/fr
Application granted granted Critical
Publication of EP2530193B1 publication Critical patent/EP2530193B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/48—Piecing arrangements; Control therefor
    • D01H4/50—Piecing arrangements; Control therefor for rotor spinning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/22—Automatic winding machines, i.e. machines with servicing units for automatically performing end-finding, interconnecting of successive lengths of material, controlling and fault-detecting of the running material and replacing or removing of full or empty cores
    • B65H54/26—Automatic winding machines, i.e. machines with servicing units for automatically performing end-finding, interconnecting of successive lengths of material, controlling and fault-detecting of the running material and replacing or removing of full or empty cores having one or more servicing units moving along a plurality of fixed winding units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/70—Other constructional features of yarn-winding machines
    • B65H54/707—Suction generating system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • Open end spinning machines generally consist of a plurality of individual spinning units, aligned on the two fronts of the machine, each of which is made up of a spinning rotor, which produces twisted yarn from the singularised fibres of a rove, and of a collecting unit that - after performing the quality control of the yarn by interposition of a slubcatcher between the two components - takes the yarn to wind onto a quill to form a reel.
  • This reel thus forms by pulling and winding the yarn on its surface, being driven in rotation by the below roller whereon the reel in formation rests.
  • the yarn is wound in crossed-over coils onto the rotating reel since the collecting unit is equipped with a yarn guiding device that distributes the yarn with axial back and forth motion on the outer surface of the reel.
  • the structure of the individual spinning station is illustrated in a front view in the diagram of figure 1 , and in a side view in figure 2 .
  • Such a structure has already been described in greater details in the European patent application 1.712.663 A2 to the same applicant.
  • the spinning unit 1 consisting, proceeding from the bottom upwards, of the spinning unit itself 2 and the collecting unit 3, which lead to the transformation of the rove of parallel fibres into twisted yarn wound on the reel.
  • the spinning unit 2 consists of:
  • the interventions required are essentially of three types:
  • Such interventions of the patrol trolleys concern both the doffing and the starting (or re-starting) operations of the spinning station and the repair of the yarn breakage due both to natural causes or commanded by the slubcatcher during spinning.
  • such interventions are carried out by separating the reel 25 from its driving cylinder 29, stopping its motion and transferring the driving of the reel 25 or of its quill 28 to an auxiliary driving roller placed on board the service trolley.
  • the trolley is equipped with its own control unit that, on the basis of the intervention requirements of the spinning units, moves at the unit to be served and proceeds to make the intervention.
  • the control unit of the trolley controls both the movements and the operation of the members of the trolley that carry out the required operating cycle.
  • the intervention processes carried out by the service trolleys consist of a considerable number of steps that the trolley carries out, moving at the single open-end spinning unit or station and connecting both to its spinning rotor and to its collecting unit above, temporarily disconnecting such members from their centralised controls and driving of the machine and operating on them with their own driving capable of taking the spinning back to normal operating speed, before reactivating the centralised controls and returning the spinning unit to its normal driving.
  • suction services are required through suction mouths arranged on the trolley that are brought closer to the various service members which operate in sequence. For example, in the doffing and starting cycle the following services are provided:
  • the suction mouth of the reel can require high flow rates and high depression for capturing the end, but once the end has been captured a low depression value is sufficient in the rest of the cycle.
  • the mouth of the reserve requires high depression and low flow rate until the new yarn is gripped in the quill.
  • the preparing device and the suction of the scraps work at high depression and low flow rate for very few seconds and then at low depression until delivery of the prepared yarn.
  • the anti-curling mouth requires a low flow rate with variable depression.
  • the suction needs of the service trolley are in general satisfied through a centralised aspirator of the machine that is connected to auxiliary channels arranged on the two fronts of the open-end spinning machine.
  • Such channels are equipped with delivery valves for each spinning unit, which the service trolley connects to each time it arrives, taking the suction service in depression and then closing the connection at its departure. From time to time, the service trolley distributes the suction taken from the common distribution channels of the centralised suction to its members.
  • the centralised system in any case, has to make a high value of depression available, even if in most of the steps of the service cycles a more modest depression value is actually needed, which is obtained by throttling the suction through throttling valves.
  • the centralised vacuum production unit must be driven in continuous to always readily supply the maximum vacuum value that could be required, even at times when service is not required.
  • the depression value that can actually be supplied, when service is required greatly depends on the number and on the distance of the work stations that require it simultaneously. This practice of generating vacuum is quite wasteful and not very reliable especially for open-end spinning machines that, in the higher productivity versions, are provided with even more than 500 spinning stations on two fronts, by lengths of around 70 metres.
  • the present invention relates to an independent device for generating suction placed on board the trolley that, during the reattaching, doffing and starting cycles of the spinning, provides for generating the suction required by each spinning unit and that allows the depression value to be modulated during the execution of the required intervention cycles.
  • the present invention permits to improve the efficiency of the interventions of the trolley and to overcome the drawbacks of the centralised suction service.
  • the device according to the invention is defined, in its essential components, in the first claim whereas its variants and preferred embodiments are specified and defined in the dependent claims.
  • Figures 1 and 2 show the diagram of an open-end spinning station in its most significant components, in a typical embodiment thereof, respectively according to a front view and a side view, which must be served by the service trolley.
  • the left part of figure 2 indicatively shows the bulk of the service trolley C placed in front of the spinning station of a open end spinning machine.
  • Figures 1 and 2 explain the technical problem tackled by the present invention.
  • the suction generating device comprises an individual suction unit 40, at least one for each trolley.
  • a suction unit consists of a rotary aspirator provided with a rotor 41 driven by an electric motor 42 (indicated with a broken line) controlled for operating with speeds periodically varied according to the needs of the suction mouths to be served.
  • a rotor 41 is a centrifugal rotor driven by a brushless electric motor 42 driven in frequency by the control unit 45 of the service trolley.
  • the trolley receives the electric power supply necessary for the motor, as well as that necessary for the other members of the trolley, from the open-end spinning machine and it does not receive the centralised suction service.
  • Figures 4 are examples of the progression of the suction depressions, of the flow rates and of the powers required to a centrifugal aspirator of a service trolley for open-end spinning machines and referring to atmospheric air.
  • Figure 4A shows, for a centrifugal aspirator like the aspirator 40, the characteristic progression of the suction depression ⁇ P in Pascal according to the flow rate in mc/h, parametrised on different rotation speed values.
  • Figure 4B shows, for said centrifugal aspirator, the characteristic progression of the power absorbed, again according to the flow rate in mc/h, again parametrised on different rotation speed values.
  • the suction side of the rotor 41 comprises an intake manifold 46 whereon a filter 47 is placed, which holds the scraps, i.e. the pieces of yarn and the fibres that are released during the cycles.
  • the filter 47 consists of a vertical container, having such volume and shape as to collect filaments and fibres for a work period of the order of magnitude of one hour, wherein an inclined filtering wall 48 having a net from 20 to 25 mesh is inserted, and which ends in the lower part with a discharge hopper.
  • a relief valve 43 is mounted that is only opened when the centrifugal aspirator 40 is used for its flow downstream, whereas it is kept closed when the centrifugal aspirator 40 is used for its intake flow from the various mouths of the service trolley.
  • the connections with the required intake services are arranged, which in figure 3 are illustrated with a thicker line.
  • the duct 50 is connected to the mobile mouth 51 for the intake and handling of the reel yarn and it is intercepted by the valve 52.
  • a sensor 53 is mounted that detects the presence or not of the yarn and is connected to the control unit 45 of the trolley.
  • the control unit 45 controls both the opening and the closing of the valve 52 to give suction to the intake mouth from the reel, and the rotation speed of the motor 42 by driving it in frequency to give the desired level of the depression and flow rate values.
  • the mouth 51 is activated by the suction device provided by the present invention, initially with a low depression level, predetermined on the basis of the type of yarn being produced.
  • the depression value normally required for the mobile mouth is around 2000 Pa.
  • the sensor 53 immediately detects the presence of the yarn, there is no need to increase the depression and it is sufficient for the sucked yarn to be held simply laid out until it is brought back to the spinning unit and in particular to the opening 9 of the rotor 8. At this point, the suction through the mouth of the reel yarn can be interrupted. If, on the other hand, the sensor 53 does not immediately detect the presence of the yarn, the depression is gradually increased, by increasing the speed of the motor 42, until there is a signal of the presence of the yarn. The increase in speed is permitted up to a predetermined maximum value, in general corresponding to generating a depression of around 4000 Pa, beyond which it is pointless to go because the yarn is impossible to be captured being it tangled or caught. In this case, the operator needs to intervene.
  • the yarn captured by the reel is then supplied to the preparing device.
  • the duct 60 is connected to the yarn preparing device 61 and is intercepted by the valve 62.
  • a parallel duct 64, intercepted by the valve 65, is connected to the suction mouth 66 of the scraps of the preparation of the yarn.
  • the control unit 45 controls both the opening and the closing of the two valves 62 and 65 to give suction to the preparing device 61 and to the suction mouth of the scraps, and the rotation speed of the motor 42 driving it in frequency to give the desired level of the depression values.
  • the depression value normally required for the preparation of the yarn and the collection of the scraps is from 4000 to 7000 Pa.
  • the aspirator 40 is controlled with predetermined depression that is sufficient to keep the yarn immobile for cutting with scissors and for the defibring of its end with compressed air, with suction of the pieces of yarn and of the fibres that are released.
  • the anti-curling mouth 72 already described in greater details in the patent application EP 1.712.663 A2 , is activated.
  • Such an anti-curling mouth 72 is placed on a duct 70 connected to the manifold 46, intercepted through the valve 71.
  • sensors 73 are mounted, which detect both presence or not of the yarn and the length of the loop of yarn inside it, and which are connected to the control unit 45 of the trolley for gradually releasing such a loop.
  • control unit 45 controls the opening and closing of the valve 71, and at the same time determines both the rotation speed of the motor 42, driving it in frequency to give a dosed suction to the anti-curling mouth, and the rotation speed of the reel 25 during the step of returning the spinning unit to its normal operation after the reattachment of the yarn.
  • the depression value normally required for the anti-curling mouth 72 is from 8000 to 12000 Pa.
  • the operations of the doffing cycle are carried out when the reel has reached the required length, and it is necessary to begin a new reel or when a new processing begins.
  • the initial operations of the doffing cycle are analogous to those of the reattachment cycle but are carried out on an auxiliary yarn that must then be eliminated from the reel that has been started.
  • Such an auxiliary or reserve yarn is introduced into the spinning rotor 8 to "fish" the fibres from the spinning rotor to produce the new yarn.
  • the manipulation of the reserve yarn is carried out by a mobile suction mouth of the reserve, which takes, sucks and holds the auxiliary yarn from its reel until it is connected with the new yarn, the section of the auxiliary yarn is eliminated, and the new yarn is gripped on the new collection quill. Once the auxiliary yarn has been gripped on the new quill it is worked like the normal yarn, apart from eliminating it from the reel.
  • the mobile suction mouth 81 of the reserve is connected to the intake manifold 46 by the duct 80, intercepted by the valve 82.
  • a sensor 83 is mounted that detects the presence or not of the yarn and is connected to the control unit 45 of the trolley.
  • the control unit 45 controls both the opening and the closing of the valve 82 to give suction to the suction mouth from the reserve, and the rotation speed of the motor 42 by driving it in frequency to give the desired level of depression and flow rate.
  • auxiliary yarn Once the auxiliary yarn has been captured, it is prepared and introduced into the spinning rotor 8 to fish the new yarn, like in the reattachment cycle.
  • the auxiliary yarn continues to be sucked into its mouth, until the new yarn has reached a sufficient length to make it constrain onto the new quill 28.
  • the section of auxiliary yarn is cut and sucked away from its mouth.
  • the mobile mouth 81 of the reserve thus requires higher depression values in the initial step of capturing the end and the final step of eliminating it, whereas the intermediate steps only require a little suction to keep the auxiliary yarn simply laid out.
  • the two depression values normally required in such steps for the mouth of the reserve are respectively around 5000 and 8000 Pa.
  • Figure 3 illustrates the device according to the invention in the functions of a supplier of suction carried out in its stops at the open-end spinning units.
  • the flow rate of the aspirator 40 is discharged from its outlet side by the duct 90 that ends with a diverter 91 of the discharge.
  • the diverter 91 opens the shutter 92 and diverts the flow into the duct 94 open towards the atmosphere.
  • the flow conveyed by the aspirator 40 goes from the suction side consisting of the suction mouths 51, 61, 66, 72 and 81 to the outlet side that corresponds to the duct 94 for discharging into the atmosphere.
  • the device according to the invention has the characteristic of being able to be configured not only as a suction supply, according to what is outlined with reference to figure 3 , to the mouths placed on the service trolley positioned in front of a spinning unit and using the suction side of the aspirator 40, but also as a supply of compressed blowing air for the trolley in translation, and no longer blocked in front of a spinning unit, instead using the outlet side of the aspirator 40, as described hereinafter.
  • the device according to the invention is indeed also used as a supply of blowing air during its translation along the fronts of the open-end machine on which the spinning units are aligned, according to the diagram shown in figure 5 .
  • blowing air is generally injected into the points of the spinning units in which there is the greatest need for cleaning from the impurities developed in the spinning, like dust and fluff of the hair of the yarn.
  • blowing mouths are placed on one or both sides of the service trolley arranged, from the bottom upwards with reference to figure 1 , at the level corresponding to serving, for example:
  • the blowing pressure value normally required for the blowing mouths is of the order of 140-200 Pa, with flow rates of around 300 mc/h.
  • the blowing service is generally carried out during the translation of the trolley and is interrupted during the service stops of the trolley.
  • FIG. 5 The configuration of the device according to the invention in the blowing service is shown in figure 5 , in which the part involved in the blowing service is illustrated with a thicker line.
  • the relief valve 43 placed in the upper part of the filter 47 is kept open whereas all of the valves 52, 62, 65, 71 and 82, installed on the distribution of the suction, are kept closed.
  • the flow rate of the aspirator 40 is discharged from its outlet side by the duct 90 that ends with a diverter 91 that closes the discharge to the atmosphere through the shutter 92 and introduces it into one or more vertical distributors 100 placed at the side of the service trolley.
  • blowing nozzles 101 are mounted, so that the flow conveyed by the aspirator 40 goes from the suction side, which consists of the relief valve 43, to the outlet side which consists of the blowing nozzles 101 arranged to correspond to the points of the spinning units to be served through the blowing.
  • the device according to the present invention offers substantial progress with respect to the devices of the prior art that provides for the centralised suction service distributed along the machine.
  • a significant reduction in cost of the open-end spinning machine is obtained, thanks to the total elimination of the suction distribution channels and their connections to the trolley through intercepted controls.
  • the distribution system is in general made through constructive systems that do not have an effective seal and that cause significant losses of the depression values in the points served.
  • the distribution channels in any case require an additional base flow rate to obtain a transportation speed that is sufficient for the transportation of the fluff and the filaments in the channels that can even be longer than 40 metres and with substantial load losses.
  • the energy consumption is greatly reduced, since the suction device on board the trolley permits to treat just the volume of air required for carrying out the service cycles, which is much less because the depression is generated locally and there are no distributed load losses.
  • the additional base flow rate is no longer necessary since the fluff is held, transported on the trolley and periodically discharged.
  • the provided depression value can be modulated according to the requirements of the yarn being processed and to the step of the cycle being carried out. With the centralised suction this is not possible because the depression value must always be at the maximum level, since on the same front two trolleys working and with different requirements can be present.
  • the great length and the great aerodynamic inertia of the channels do not however allow the depression values to be modulated to the actual need of the service to a spinning unit.
  • the suction device according to the invention permits to substantially increase the efficiency of the trolley and the yield of the open-end spinning machine because the increased success of the capturing of yarn and the reduction in preparation time of the yarn and driving time of the anti-curling mouth allow a clear reduction in the time of each service cycle.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP12169156.2A 2011-05-30 2012-05-23 Dispositif d'aspiration pour chariots de service pour machines de filature à fibres libérées Active EP2530193B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000978A ITMI20110978A1 (it) 2011-05-30 2011-05-30 Dispositivo di aspirazione per carrelli di servizio per filatoi open-end

Publications (2)

Publication Number Publication Date
EP2530193A1 true EP2530193A1 (fr) 2012-12-05
EP2530193B1 EP2530193B1 (fr) 2015-11-18

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EP (1) EP2530193B1 (fr)
CN (1) CN102808247B (fr)
IT (1) ITMI20110978A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3075889A1 (fr) * 2015-04-03 2016-10-05 Rieter CZ s.r.o. Méthode et appareil pour évacuer une portion défectueuse de fil d'une position de filage d'un métier à filer à bout libre
EP3489398A1 (fr) * 2017-11-22 2019-05-29 Savio Macchine Tessili S.p.A. Métier à filer à bout libre ayant une évacuation du fil défectueux améliorée et procédé de fonctionnement de ce métier

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ306444B6 (cs) * 2015-04-30 2017-01-25 Rieter Cz S.R.O. Způsob zapřádání příze na pracovním místě rotorového dopřádacího stroje a zařízení k jeho provádění
CN108660555A (zh) * 2018-05-16 2018-10-16 东华大学 转杯纺纱机接头小车气口接入装置
EP3748054B1 (fr) * 2019-06-06 2023-02-22 Lakshmi Machine Works Ltd. Métier à filer à anneau comprenant un ensemble de rattachage automatique de fil et un appareil d'inclinaison de guide-fil

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0340863A1 (fr) 1988-05-06 1989-11-08 SAVIO S.p.A. Dispositif pour déposer une reserve de fil sur une bobine vide.
EP0443220A1 (fr) 1990-02-23 1991-08-28 SAVIO MACCHINE TESSILI S.p.A. Dispositif et procédé pour la préparation d'une extrémité de fil permettant de commencer ou recommencer une filée dans un métier à filer à bout libre
EP0473212A1 (fr) 1990-08-01 1992-03-04 SAVIO MACCHINE TESSILI S.r.l. Dispositif et procédé pour attraper et préparer le bout du fil pour le rattacher dans un métier à filer à bout libre
EP1524339A2 (fr) 2003-10-16 2005-04-20 SAVIO MACCHINE TESSILI S.p.A. Dispositif d'entretien pour un métier à filer à bout libre
EP1524230A2 (fr) 2003-10-16 2005-04-20 SAVIO MACCHINE TESSILI S.r.l. Dispositif de surveillance se déplaçant le long d'un métier à filer à bout libre
EP1524229A2 (fr) 2003-10-16 2005-04-20 SAVIO MACCHINE TESSILI S.p.A. Dispositif et procédé pour déposer la réserve de fil sur les canettes de métiers à filer à bout libre
EP1707524A1 (fr) 2005-04-01 2006-10-04 Saurer GmbH & Co. KG Machine textile fabriquant des bobines à spires croisées
EP1712663A2 (fr) 2005-04-11 2006-10-18 SAVIO MACCHINE TESSILI S.p.A. Dispositif pour la manutention du fil dans des chariot-serveurs mobiles pour des métiers à filer à bout libre

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0691300B1 (fr) * 1994-07-07 1997-08-27 W. SCHLAFHORST AG & CO. Dispositif pour relier des fils pour machines textiles fabriquant des paquets à spires croisées
DE19905184C1 (de) * 1999-02-09 2000-03-16 Volkmann Gmbh & Co Vorrichtung zur Herstellung eines Zwirns in einem integrierten Spinn-Zwirnprozeß
CN100352982C (zh) * 2002-01-18 2007-12-05 里特机械公司 纺纱机

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0340863A1 (fr) 1988-05-06 1989-11-08 SAVIO S.p.A. Dispositif pour déposer une reserve de fil sur une bobine vide.
EP0443220A1 (fr) 1990-02-23 1991-08-28 SAVIO MACCHINE TESSILI S.p.A. Dispositif et procédé pour la préparation d'une extrémité de fil permettant de commencer ou recommencer une filée dans un métier à filer à bout libre
EP0473212A1 (fr) 1990-08-01 1992-03-04 SAVIO MACCHINE TESSILI S.r.l. Dispositif et procédé pour attraper et préparer le bout du fil pour le rattacher dans un métier à filer à bout libre
EP1524339A2 (fr) 2003-10-16 2005-04-20 SAVIO MACCHINE TESSILI S.p.A. Dispositif d'entretien pour un métier à filer à bout libre
EP1524230A2 (fr) 2003-10-16 2005-04-20 SAVIO MACCHINE TESSILI S.r.l. Dispositif de surveillance se déplaçant le long d'un métier à filer à bout libre
EP1524229A2 (fr) 2003-10-16 2005-04-20 SAVIO MACCHINE TESSILI S.p.A. Dispositif et procédé pour déposer la réserve de fil sur les canettes de métiers à filer à bout libre
EP1707524A1 (fr) 2005-04-01 2006-10-04 Saurer GmbH & Co. KG Machine textile fabriquant des bobines à spires croisées
EP1712663A2 (fr) 2005-04-11 2006-10-18 SAVIO MACCHINE TESSILI S.p.A. Dispositif pour la manutention du fil dans des chariot-serveurs mobiles pour des métiers à filer à bout libre

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3075889A1 (fr) * 2015-04-03 2016-10-05 Rieter CZ s.r.o. Méthode et appareil pour évacuer une portion défectueuse de fil d'une position de filage d'un métier à filer à bout libre
US10415158B2 (en) 2015-04-03 2019-09-17 Rieter Cz S.R.O. Method and a device for removing the faulty yarn portion from a work station of an open-ending spinning machine
EP3489398A1 (fr) * 2017-11-22 2019-05-29 Savio Macchine Tessili S.p.A. Métier à filer à bout libre ayant une évacuation du fil défectueux améliorée et procédé de fonctionnement de ce métier

Also Published As

Publication number Publication date
ITMI20110978A1 (it) 2012-12-01
CN102808247B (zh) 2017-06-06
EP2530193B1 (fr) 2015-11-18
CN102808247A (zh) 2012-12-05

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