EP2508659B1 - System zum Sammeln und Wiederherstellen von Spulenkratzern - Google Patents

System zum Sammeln und Wiederherstellen von Spulenkratzern Download PDF

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Publication number
EP2508659B1
EP2508659B1 EP20120162025 EP12162025A EP2508659B1 EP 2508659 B1 EP2508659 B1 EP 2508659B1 EP 20120162025 EP20120162025 EP 20120162025 EP 12162025 A EP12162025 A EP 12162025A EP 2508659 B1 EP2508659 B1 EP 2508659B1
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EP
European Patent Office
Prior art keywords
collecting
filtering
spooling
spooler
scraps
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Application number
EP20120162025
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English (en)
French (fr)
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EP2508659A1 (de
Inventor
Roberto Badiali
Mauro Ceolin
Giorgio Colomberotto
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
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Savio Macchine Tessili SpA
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Publication of EP2508659A1 publication Critical patent/EP2508659A1/de
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H11/00—Arrangements for confining or removing dust, fly or the like
    • D01H11/005—Arrangements for confining or removing dust, fly or the like with blowing and/or suction devices
    • 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
    • B65H54/702—Arrangements for confining or removing dust
    • 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
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/08—Automatic end-finding and material-interconnecting arrangements
    • B65H67/081—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement
    • 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

  • the present invention refers to a device for collecting and recovering the scraps produced during the spooling process by the units that constitute the automatic spooler.
  • Spoolers indeed consist of a plurality of spooling units aligned along the front of the machine and provided with common control and service equipments. Among such common service equipments there are the devices for preparing the spools to be unwound in the spooling units.
  • both the non continuous and high head suction service, for recovering the ends through the mouths 9 and 10, and the continuous low head service, for dust removal through the mouths 20 are carried out through an individual aspirator 22, one for each of the winding units aligned along the front of the machine.
  • an aspirator consists of a rotary aspirator with a centrifugal impeller 25 actuated through a "brushless" electric motor 26 controlled in frequency by the control unit 16 of the winding unit.
  • the mouth 20 of the "dust removal" service with continuous low vacuum suction is connected through a duct 30 to the suction unit of the winding unit, intercepted through a gate valve 31, controlled by the control unit 16 of the winding unit and normally kept open during the normal winding process.
  • the mouths 9 and 10 work discontinuously with high vacuum suction during the interruptions to normal winding. They are respectively connected through a duct 34 to the suction unit 22 of the winding unit, intercepted through a gate valve 35, controlled by the control unit 16 of the winding unit and normally kept closed during the normal winding process.
  • the gate valve 35 is only opened on occasion of the joining interventions.
  • the individual suction unit 22 that equips the single winding unit 23 serves either the duct 30 of the low vacuum "dust removal" service or the duct 34 of the high vacuum suction.
  • the different vacuum values required for the two alternative suction services are obtained by actuating the centrifugal aspirator 22 at different speeds, which has characteristic curves of the suction vacuum ⁇ P that varies inversely to the flow rate in volume, according to a band of curves parallel and increasing with the increase in rotation speed, as already described in the cited application IT 2009A2013 in the name of the same Applicant.
  • the two ducts 30 and 34 of each spooling station are connected to a common filter 50, individual for each spooling station, which has the function of retaining the material picked up and transported through the suction and in particular it retains both the impurities of the "dust removal” collected through the spooling while functioning and the pieces of yarn, the so-called “fluff”, removed by the suctioning of the aspirator 22, when it is connected to the mouths 9 and 10 and actuated at high depression when the spooling is interrupted.
  • the individual filter 50 can be equipped with a single fine mesh filtering sect that retains all of the material: both the impurities and the fluff.
  • the present invention is defined by claim 1.
  • the individual filter 50 consists of two filtering chambers in series, of a hopper 55 below for collecting the separated fluff.
  • the first filtering chamber is equipped with a rougher mesh filtering sect 51 that retains the "fluff", which is removed by the high-depression suction by the aspirator 22, when it is connected to the mouths 9 and 10 and actuated at high depression.
  • the second filtering chamber downstream of the first, is equipped with a fine mesh filtering sect 52 for the impurities, consisting of hair and fibres, which on the other hand pass freely through the rougher filtering sect 51 that constitutes the first filtering chamber, both during filtering and during cleaning of the filter.
  • the rougher mesh filtering sect has a hole dimension of the order of 20 mesh
  • the fine mesh filtering sect has a hole dimension of the order of 800 mesh.
  • the filtering sects of the filter 50 are preferably arranged to receive, from below, the flow of fluid containing the material to be separated, so that, when the suction flow at high depression stops, most of the rough material intercepted and retained by the filtering sect 51 falls spontaneously downwards into the hopper 55 below, freeing the first of the filtering sects.
  • the amount of material to be retained mainly consists of fluff.
  • the linear size of the fluff can indeed range from a few centimetres, in the normal preparation of the join of the yarn, up to ten or even more metres, for long defects of the count of the yarn detected through the slubcatcher.
  • the impurities of the "dust removal” have an average size of about a millimetre or slightly more.
  • the material separated and recovered through the filters is generally recycled to carding, in order to recover the fibres that constitute the fluff.
  • the impurities and the short fibres possibly present in the recovered material are separated and removed, keeping just the fibres of acceptable length being processed.
  • the realization of the filter with a double filtering chamber in series, shown in figure 2 allows a greater accumulation of material before the overall load loss of the filter requires the discharging operation of the material.
  • the fluff is substantially stopped by the rough filtering sect and, when the suction at high depression stops, it mostly falls and accumulates on the bottom of the filter.
  • the filters 50 From the bottom of the filters 50, which the spooling stations are equipped with, the accumulated material is periodically discharged, respectively, through ducts 53, intercepted through a shutter 54, which gather in a common discharge collector 70.
  • the filters 50 are equipped with a waste valve 57, which is opened for the discharge operations of the material accumulated in the filters 50. The opening of such waste valves 57 preferably isolates the filter 50 from its aspirator 22.
  • Figure 3 illustrates the assembly of the collection system of spooling scraps. All of the individual discharges 53 of the spooling units 23 are connected to a common collector 70, which collects all of the material separated in the respective filters 50.
  • the devices 63 for preparing the spools can also be advantageously connected to the collector 70, for example as described in patent application IT 2009 A 2011 and herein shown schematically. Such devices generate a significant amount of residuals of yarn pieces, suctioned through an individual aspirator 64, deposited in mesh filters 65 and discharged through a duct 68, through a scheme equipped with discharging shutters 66 and with waste valves 67 totally analogous to that of the filters 50 of the spooling units according to figure 1 .
  • All of the filters 50 and 65 are connected through the collector 70 to a collective system for collecting their scraps, consisting of a duct having a small size that is arranged along the machine and that receives the flow coming from all of the spooling units 23 and, preferably, also from the devices 63 for preparing the spools.
  • the collector 70 is served by a high-depression aspirator 71, which provides for periodically discharging the material of the filters through pneumatic transportation to a general filter 80 that is described in greater details in figures 4 and 5 . In order to avoid clogging, the transportation speed in the duct 70 is kept around 20 m/sec.
  • the discharging needs of the material retained by the filters are very variable, according to the yarns treated in the spooler.
  • the greater discharging frequency is required by the devices 63 for preparing the spools, which require cleaning of their filters 65 even every 10-20 minutes, in the order of magnitude of a few hundred spools prepared.
  • the filters 50 which the spooling stations 23 are equipped with in general require cleaning with a period of the order of magnitude of an hour, in the case of filters having a single fine mesh filtering sect that retains all of the material: both dust and fluff.
  • the filters 50 are realized with a double filtering chamber in series, as shown in figure 2 , such a cleaning frequency is reduced, increasing the intervals between one cycle and the other by about 40-50%, unless very hairy yarns are processed.
  • Such cleaning is preferably carried out for one filter 50 at a time while its spooling unit 23 is operating.
  • the operation requires a few seconds and is carried out, for the spooling units 23, firstly by opening their waste valves 57, preferably isolating their filter 50 from the aspirator 22, closing the valves 31,35 towards the spooling unit 23 and then opening the discharge valve 54 on the duct 53, with the aspirator 71 in action.
  • the cleaning of the filter is thus prevented from affecting the spooling in its normal operation.
  • the suctioning through the aspirator 71 draws air from the waste valves 57 and empties the filters 50 of the material accumulated bringing it into the general filter 80 through the collector 70.
  • the general filter 80 can be a conventional filter that separates and indistinctly discharges the fluff together with the fine impurities, recycling them to carding. In the carding process of dust, tufts, "neps" and short fibres are eliminated from the production cycle.
  • the general filter 80 is made to obtain a classification of the material in a double cyclone system, illustrated in greater details in figure 4 as an overall scheme; in figures 5A,B the cyclones are shown in section to describe their operation.
  • the filtering system 80 consists of a pair of cyclones in series placed in depression through the aspirator 71.
  • the first cyclone 81 is fed by the duct 70 through a suctioned air flow containing both fluff and other impurities coming from the filters 50 and 65 that are gradually cleaned, opening their waste valves 57 and 67 and their shutters 54 and 66.
  • the flow to be filtered is introduced into the cyclone 81 in the upper part and with tangential direction, generating a spiral motion descending downwards.
  • the particulate of greater dimensions, the fluff comes out of the flow and by inertia comes into contact with and slows down against the inner conical walls of the cyclone: as a result of the effect of gravity, the particulate slides and accumulates at the bottom of the conical hopper 82, from which it is periodically discharged through the shutter 83.
  • Such a particulate essentially consists of fluff that can be recycled.
  • the cyclone 81 works discontinuously and operates as a separator of the fluff from the particulate, unlike what is described in the cited EP 2.045.378 .
  • the flow of the duct 87 is introduced into the second cyclone 91, in particular in its lower conical part 92 and with tangential direction into the opening 94.
  • a spiral motion descending downwards is generated.
  • the medium-sized particulate comes out of the flow, by inertia comes into contact with and slows down against the inner conical walls of the cyclone: as a result of the effect of gravity the medium-sized particulate slides and accumulates at the bottom of the conical hopper 92, from which it is periodically discharged through the shutter 95.
  • the air flow containing the finer particulate inverts the sense of its motion and rises spiralling upwards to the upper part 93 of the second cyclone 91.
  • Such an upper part 93 is cylinder-shaped and, in its central part, it is occupied by a filtering cartridge 96, which intercepts the ascending flow and sorts and retains the residual particulate.
  • the hole dimension of the filtering cartridge is of the order of 15 ⁇ m.
  • Such a filtering cartridge is preferably cylindrical, in a common axis with the cyclone 91, equipped with a blind hole 97 and with a blind upper crown 98, so as to force the air flow to pass through its cylindrical filtering surface, with the flows indicated with the arrows, and then to come out of the upper opening 100 towards the aspirator 71 and its release into the atmosphere.
  • a diffuser 102 of compressed air for washing the cartridge is placed, connected to the service compressed air.
  • the load loss i.e. the differential pressure
  • the aspirator 71 is stopped and its discharge is closed.
  • the cartridge 96 is cleaned, simultaneously opening the solenoid valve 104 and the shutter 95 of the hopper 92 and injecting compressed air through the diffuser 102. In this way a "counter-washing" is carried out from inside to outside that frees the particulate retained on the outer surface of the cartridge 96.
  • the individual filters 50 are cleaned one at a time by opening their valves 54 and their respective waste valves 57 in sequence.
  • the procedure is totally analogous.
  • a suctioning depression of 10-13 kPa, or 1000-1300 mm of water column is applied.
  • Such depression values refer to the depression exerted in the filters 50 and 65 to be cleaned, whereas the depression values in the members downstream are affected by the load losses of the overall circuit.
  • the discharging device of the spooling scraps according to the present invention also allows such discharging to be carried out through a single duct, and furthermore one with a small diameter, and through low suctioning powers installed, since it is provided for discharging one filter at a time.
  • the number of filters installed for the spooling units and the relative intercepting shutters is reduced to the minimum, as well as the relative command and control members.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Cyclones (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Adjustment Of Camera Lenses (AREA)
  • Treating Waste Gases (AREA)

Claims (10)

  1. Vorrichtung zum Sammeln des Ausschusses, der von einer Spul- bzw. Wickeleinrichtung erzeugt wird, bestehend aus einer Mehrzahl von Spul- bzw. Wickeleinheiten (23), die ausgerichtet bzw. in eine Linie gebracht sind und von einem Ansaugsystem bedient werden, das aus einer Mehrzahl individueller bzw. einzelner Aspiratoren bzw. Sauger (22) besteht, die individuell bzw. einzeln jede Spul- bzw. Wickeleinheit (23) ausrüsten, wobei jede einzelne Spul- bzw. Wickeleinrichtung (22) abwechselnd einen kontinuierlichen Sog mit niedrigem Unterdruck, während das Spulen bzw. Wickeln in Funktion bzw. Betrieb ist, für den Entfernungs- bzw. Beseitigungsdienst von Unreinheiten und des Haares des Garns, und einen diskontinuierlichen Sog mit hohem Unterdruck zum Eliminieren von Stücken von Garn bereitstellt, die von den Fang- und Kreuzungs- bzw. Verbindungsoperationen des Garns stammen, während das Spulen bzw. Wickeln unterbrochen wird, so dass jeder individuelle bzw. einzelne Aspirator bzw. Sauger (22) mit einem Separier- bzw. Trennfilter (50) des angesaugten Materials versehen ist, wobei dieser Filter abwechselnd Unreinheiten und Flaum empfängt und zurückhält, und dadurch, dass alle Filter (50) der Spul- bzw. Wickelstationen (23), welche die Spul- bzw. Wickeleinrichtung bilden, durch eine gemeinsame Leitung (70) mit einem gemeinsamen allgemeinen Filter (80) zum Sammeln von Ausschuss verbunden sind, den sie periodisch entlädt bzw. ausstößt, und sie das von den Separier- bzw. Trennfiltern (50) zurückgehaltene Material empfängt, und zwar einzeln bzw. einer nach dem anderen und für beide Materialien.
  2. Vorrichtung zum Sammeln des Ausschusses, der von einer Spuleinrichtung erzeugt wird, nach Anspruch 1, dadurch gekennzeichnet, dass jeder einzelne der Separierfilter (50) mit zwei Filterkammern in Reihe realisiert ist, von denen die erste Filterkammer mit einem gröberen Gewebe- bzw. Maschenfilterabschnitt (51) versehen ist, der den Flaum zurückhält, der von dem Hoher-Unterdruck-Aspirator durch den Aspirator (22) angesaugt wird, und die zweite Filterkammer, die stromabwärts der ersten platziert ist, mit einem feinen Gewebe- bzw. Maschenfilterabschnitt (52) versehen ist, der die Unreinheiten zurückhält.
  3. Vorrichtung zum Sammeln des Ausschusses, der von einer Spuleinrichtung erzeugt wird, nach Anspruch 2, dadurch gekennzeichnet, dass die beiden Filterkammern in Reihe realisiert sind mit dem gröberen Gewebe, das eine Abmessung der Löcher in der Größenordnung von 20 Maschenweite aufweist, und dem feinen Gewebe, das eine Abmessung in der Größenordnung von 800 Maschenweite aufweist.
  4. Vorrichtung zum Sammeln des Ausschusses, der von einer Spuleinrichtung erzeugt wird, nach Anspruch 1, dadurch gekennzeichnet, dass Spul- bzw. Wickelvorbereitungsvorrichtungen (63), welche die Spuleinrichtung ausrüsten, ebenfalls mit dieser verbunden sind, um die jeweiligen Filter (65) zu entladen, die eine beträchtliche Menge an Resten von Garnstücken sammeln.
  5. Vorrichtung zum Sammeln des Ausschusses, der von einer Spuleinrichtung erzeugt wird, nach Anspruch 1, dadurch gekennzeichnet, dass der gemeinsame allgemeine Filter (80) zum Sammeln von Spulausschuss dahingehend realisiert ist, eine Klassifizierung des Materials in einem Doppelzyklonsystem zu erhalten, das durch ein Paar Zyklone (81, 91) in Reihe gebildet ist, die in Vertiefung bzw. Unterdruck mit einem Aspirator bzw. Sauger (71) platziert ist und von der Leitung (70) mit einem angesauten versorgt wird, der sowohl Flaum als auch Unreinheiten enthält, von denen bzw. wobei der erste Zyklon (81) den Flaum aussortiert und der zweite Zyklon (91) die restlichen Teilchen aussortiert, wobei diese Zyklone in ihrem unteren Teil mit konischen Trichtern und Ausstoß- bzw. Entladeklappen bzw. -verschlüssen (83, 95) versehen sind.
  6. Vorrichtung zum Sammeln des Ausschusses, der von einer Spuleinrichtung erzeugt wird, nach Anspruch 5, dadurch gekennzeichnet, dass der obere Teil (93) des zweiten Zyklons (91) von einer Filterpatrone bzw. - einsatz (96) eingenommen wird, der den Abwärtsstrom abschneidet und die restlichen Teilchen sortiert und zurückhält.
  7. Vorrichtung zum Sammeln des Ausschusses, der von einer Spuleinrichtung erzeugt wird, nach Anspruch 6, dadurch gekennzeichnet, dass die Abmessung der Poren der Filterpatrone (96) in der Größenordnung von 15 µm liegt.
  8. Vorrichtung zum Sammeln des Ausschusses, der von einer Spuleinrichtung erzeugt wird, nach Anspruch 6, dadurch gekennzeichnet, dass die Filterpatrone (96) zylindrisch ist, mit einer gemeinsamen Achse mit dem Zyklon (91), und so angeordnet ist, dass sie den Verlauf des Luftstroms durch ihre zylindrische Fläche bzw. Oberfläche und somit den Austritt aus der oberen Öffnung (100) zu dem Aspirator (71) hin und seinen Ausstoß in die Atmosphäre erzwingt.
  9. Vorrichtung zum Sammeln des Ausschusses, der von einer Spuleinrichtung erzeugt wird, nach Anspruch 6, dadurch gekennzeichnet, dass über der Filterpatrone (96) ein Diffuser (102) für Druckluft platziert ist, zum Waschen bzw. Spülen der Patrone, und zwar verbunden mit der Dienstdruckluft.
  10. Vorrichtung zum Sammeln des Ausschusses, der von einer Spuleinrichtung erzeugt wird, nach Anspruch 6, dadurch gekennzeichnet, dass zwischen stromaufwärts und stromabwärts der Patrone (96) ein Differentialmanometer bzw. Differentialdruckmanometer (103) installiert ist, um den Verlust von Ladung in der Patrone selbst zu messen.
EP20120162025 2011-04-08 2012-03-29 System zum Sammeln und Wiederherstellen von Spulenkratzern Active EP2508659B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000585A ITMI20110585A1 (it) 2011-04-08 2011-04-08 Sistema per la raccolta e il ricupero degli sfridi di roccatura

Publications (2)

Publication Number Publication Date
EP2508659A1 EP2508659A1 (de) 2012-10-10
EP2508659B1 true EP2508659B1 (de) 2014-03-12

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EP20120162025 Active EP2508659B1 (de) 2011-04-08 2012-03-29 System zum Sammeln und Wiederherstellen von Spulenkratzern

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EP (1) EP2508659B1 (de)
CN (1) CN102861740B (de)
IT (1) ITMI20110585A1 (de)

Families Citing this family (12)

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Publication number Priority date Publication date Assignee Title
ITMI20120638A1 (it) * 2012-04-18 2013-10-19 Savio Macchine Tessili Spa Dispositivo di separazione delle polveri dai filacci per la raccolta e il recupero degli sfridi di roccatura e roccatrice con tale dispositivo
JP2016079526A (ja) * 2014-10-16 2016-05-16 村田機械株式会社 糸巻取機
CN106516877A (zh) * 2016-12-13 2017-03-22 苏州市朗润纺织科技有限公司 一种棉布贴合防粘纱线收卷装置
JP2018177419A (ja) * 2017-04-07 2018-11-15 村田機械株式会社 ボビン処理装置
CH714068A1 (de) * 2017-08-17 2019-02-28 Rieter Ag Maschf Mehrfachdüsenanschluss einer Textilmaschine und Textilmaschine.
CN107503007A (zh) * 2017-10-24 2017-12-22 青岛金汇丰机械有限公司 吸尘装置及粗纱机
EP3489398B1 (de) * 2017-11-22 2022-11-23 Savio Macchine Tessili S.p.A. Offenendspinnmaschine mit einer verbesserten garnabfallentsorgung und korrespondierendes verfahren
CN107844109B (zh) * 2017-12-11 2023-09-08 保定市尤里卡电气设备有限公司 一种羽绒水洗控制系统
EP3838823A1 (de) * 2019-12-19 2021-06-23 Aladdin Manufacturing Corporation Garnspeicherbehälter und garnspeichersystem
CN112167110A (zh) * 2020-09-30 2021-01-05 青岛兴仪电子设备有限责任公司 一种出雏机绒毛收集装置及孵化系统
CN113893635B (zh) * 2021-11-16 2023-07-21 江苏精亚环境科技有限公司 滤尘机组二级粉尘绒尘分离方法及其设备
CN117802644A (zh) * 2022-09-30 2024-04-02 日本Tmt机械株式会社 假捻加工机以及纤维屑回收装置

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Publication number Priority date Publication date Assignee Title
IT1269702B (it) * 1994-01-11 1997-04-15 Savio Macchine Tessili Srl Metodo ed apparecchiatura per aspirare e per asportare automaticamente la lanuggine e il pulviscolo in una stazione di roccatura
DE19908378B4 (de) * 1999-02-26 2012-08-23 Oerlikon Textile Gmbh & Co. Kg Filtereinrichtung für eine Textilmaschine
ITMI20012421A1 (it) * 2001-11-16 2003-05-16 Savio Macchine Tessili Spa Dispositivo e procedimento per depurare il filo della bobina di alimentazione ad una roccatice automatica dai suoi tratti terminali difettos
ITMI20070133A1 (it) * 2007-01-29 2008-07-30 Savio Macchine Tessili Spa Sistema di aspirazione per roccatrici
DE102008040992A1 (de) * 2007-09-12 2009-03-19 Rieter Ingolstadt Gmbh Saugsystem für eine Offenendspinnmaschine
JP2009091671A (ja) * 2007-10-04 2009-04-30 Murata Mach Ltd 繊維機械における集綿処理システム

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CN102861740B (zh) 2016-12-28
ITMI20110585A1 (it) 2012-10-09
CN102861740A (zh) 2013-01-09
EP2508659A1 (de) 2012-10-10

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