EP2218670A1 - Fadenliefervorrichtung mit einer leichten Fadenaufwickeltrommel - Google Patents

Fadenliefervorrichtung mit einer leichten Fadenaufwickeltrommel Download PDF

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Publication number
EP2218670A1
EP2218670A1 EP09425054A EP09425054A EP2218670A1 EP 2218670 A1 EP2218670 A1 EP 2218670A1 EP 09425054 A EP09425054 A EP 09425054A EP 09425054 A EP09425054 A EP 09425054A EP 2218670 A1 EP2218670 A1 EP 2218670A1
Authority
EP
European Patent Office
Prior art keywords
yarn
yarn feeder
spokes
feeder
hub
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
EP09425054A
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English (en)
French (fr)
Other versions
EP2218670B1 (de
Inventor
Giovanni Pedrini
Rosario Castelli
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.)
LGL Electronics SpA
Original Assignee
LGL Electronics 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.)
Filing date
Publication date
Application filed by LGL Electronics SpA filed Critical LGL Electronics SpA
Priority to EP20090425054 priority Critical patent/EP2218670B1/de
Priority to DE200960000914 priority patent/DE602009000914D1/de
Publication of EP2218670A1 publication Critical patent/EP2218670A1/de
Application granted granted Critical
Publication of EP2218670B1 publication Critical patent/EP2218670B1/de
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/48—Thread-feeding 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
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B65H51/22—Reels or cages, e.g. cylindrical, with storing and forwarding surfaces provided by rollers or bars
    • 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 relates to a yarn feeder provided with a yarn-winding drum having a lightweight structure.
  • yarn feeders are used in textile lines, which comprise a yarn-winding drum driven to rotate by a motor for drawing the yarn from a reel and feeding it to a downstream textile machine.
  • a feeder of this type is described, e.g., in EP 1 710 334 of Applicant.
  • US 4,669,677 describes a yarn-winding drum having a lightweight structure and comprising a spider assembly of bent metal rods which are interconnected to form a cylindrical frame.
  • the advantage of the above structure is that it has a high shape rigidity, but it is not satisfactory from the point of view of the inertia because, in addition to the metal rods, it has a high number of connection parts which increase the inertia of the drum and make it rather complex and, consequently, expensive.
  • US 6,131,842 describes a drum consisting of a plurality of arms which radially project from a hub connected to the driving shaft of the feeder.
  • Each arm consists of a bent metal wire having two parallel, radial portions which are axially spaced from each other and are connected by a longitudinal portion on which the yarn is supported.
  • the above drum has a very light structure and, therefore, it is satisfactory in relation to the riduction of the inertia; however, it has the drawback that it has a limited shape rigidity due to the arms being made of a thin metal wire. As known, this circumstance affects the accuracy of the yarn-feeding process.
  • a yarn feeder provided with a yarn-winding drum which has both a low inertia and, more generally, a low resistance to rotation, as well as a high shape rigidity.
  • a yarn feeder 10 comprises a housing 12 in which a motor 13 is incorporates ( Fig. 3 ).
  • a yarn-winding drum 14 is keyed to the shaft 13a of motor 13.
  • the yarn is wound between yarn-winding drum 14 and an adjustable sloping pin 16 which forms part of a conventional mechanism for separating the yarn loops, which is well known in the field and, accordingly, will not be further described.
  • Yarn F unwinding from drum 14 passes through a tension sensor 18, which is housed within housing 12 for the feedback control of the feeder, and then is fed to a general downstream machine (not shown).
  • the operative parameters of feeder 10 are managed by a push-button panel 20 provided with a display 22 ( Fig. 1 ).
  • yarn-winding drum 14 comprises a molded frame 26 of a synthetic material ( Fig. 4 ), preferably a thermoplastic material such as Nylon with addition of carbon fibers.
  • Frame 26 has a hub 28 and a plurality of spokes 30 spaced at equal angles, which radially project from the hub and have an aerodynamic profile in the direction of rotation.
  • Spokes 30 have respective yarn-bearing arms 32 projecting from their outer ends in a direction substantially parallel to the axis of the hub, i.e., along the generatrixes of a cylinder.
  • the yarn-bearing arms also have an aerodynamic profile in the direction of rotation.
  • spokes 30 have a biconvex profile ( Fig.
  • the profile of yarn-bearing arms 32 comprises a convex outer surface 32a and slightly concave inner surface 32b ( Fig. 7 ).
  • the profiles of both spokes 30 and yarn-bearing arms 32 are symmetrical with respect to the transverse, middle lines of their respective sections.
  • a projection 34 is formed in the area of connection of spoke 30 with its respective yarn-bearing arm 32.
  • Projection 34 is sloping outwards at an angle ⁇ which is advantageously in the range 20° to 40°, preferably 30°, with respect to a plane perpendicular to the axis of the drum, in the direction opposite to yarn-bearing arms 32.
  • a stiffening ring 36 ( Figs. 4 and 5 ) is coaxially connected to the base of frame 26, which is defined by the free ends of yarn-bearing arms 32.
  • Stiffening ring 36 has a plurality of equally-spaced longitudinal holes 38 that are restrainedly engaged by respective pins 40 which longitudinally project from the free ends of yarn-bearing arms 32 ( Fig. 5 ).
  • stiffening ring 36 is also made of a thermoplastic material such as Nylon with addition of carbon fibers.
  • Yam winding drum 10 is keyed to shaft 13a of motor 13, with interposition of a bush insert 44 which is received in hub 28, is preferably made of aluminum, and over which the drum is molded.
  • a screw 52 is screwed into bush insert 44 and engages a flattened surface 54 of shaft 13a for coupling the drum to the shaft.
  • Drum 10 which essentially consists of a frame 26 made of a lightweight synthetic material with spokes 30 and yarn-bearing arms 32 interconnected by a stiffening ring 36, has a high rigidity, a low inertia, as well as a low aerodynamic drag due to spokes 30 and yarn-bearing arms 32 having respective aerodynamic profiles. This circumstance, as a person skilled in the art will immediately understand, enhances the responsiveness of yarn feeder 10 to the driving inputs.
  • Projections 34 have the aim both of preventing yarn loops from slipping away from drum 10 during the feeding process, and of rewinding onto the drum any loop which, after a stop, has accidentally slipped away from the drum due to a loosening of the yarn downstream of the feeder.
  • Bush insert 44 allows drum 10 to be firmly coupled to shaft 13a without deforming the drum.
  • spokes 30 and yarn-bearing arms 32 may differ from those indicated as preferred, whereby any other profile having a low aerodynamic drag, e.g., a wing-like, drop-shaped profile, and the like, may be used.
  • any other profile having a low aerodynamic drag e.g., a wing-like, drop-shaped profile, and the like.
  • bush insert 44 may be removed if hub 28 is formed with a sturdy shape which allows screw 52 to be filmly secured without deforming the drum.
  • pins 40 may be fixed to holes 38 of ring 36 in a way different from what described, e.g., they may be glued, hot riveted, laser welded, and the like; frame 26 and ring 36 could even be made enbloc.
  • the materials may differ from those indicated as preferred.
  • stiffening ring 36 may be made of aluminum as well as of a synthetic material different from that indicated as preferred.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
EP20090425054 2009-02-16 2009-02-16 Fadenliefervorrichtung mit einer leichten Fadenaufwickeltrommel Active EP2218670B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20090425054 EP2218670B1 (de) 2009-02-16 2009-02-16 Fadenliefervorrichtung mit einer leichten Fadenaufwickeltrommel
DE200960000914 DE602009000914D1 (de) 2009-02-16 2009-02-16 Fadenliefervorrichtung mit einer leichten Fadenaufwickeltrommel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20090425054 EP2218670B1 (de) 2009-02-16 2009-02-16 Fadenliefervorrichtung mit einer leichten Fadenaufwickeltrommel

Publications (2)

Publication Number Publication Date
EP2218670A1 true EP2218670A1 (de) 2010-08-18
EP2218670B1 EP2218670B1 (de) 2011-03-16

Family

ID=40809828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090425054 Active EP2218670B1 (de) 2009-02-16 2009-02-16 Fadenliefervorrichtung mit einer leichten Fadenaufwickeltrommel

Country Status (2)

Country Link
EP (1) EP2218670B1 (de)
DE (1) DE602009000914D1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20120435A1 (it) * 2012-05-17 2013-11-18 Lgl Electronics Spa Alimentatore di filato a tamburo rotante per macchine tessili.
EP2708625A1 (de) 2012-09-17 2014-03-19 L.G.L. Electronics S.p.A. Fadenzufuhrgerät mit Drehtrommel für Strickverfahren mit Auswahl des Garns
EP2868608A1 (de) 2013-10-29 2015-05-06 L.G.L. Electronics S.p.A. Positive Fadenzufuhrvorrichtung mit Steuerung der Zufuhrspannung
ITUB20160067A1 (it) * 2016-01-26 2017-07-26 Lgl Electronics Spa Dispositivo di recupero di filato per apparati tessili.
CN107055197A (zh) * 2015-10-21 2017-08-18 村田机械株式会社 纱线卷取装置

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2175218A (en) * 1936-06-20 1939-10-10 Ind Rayon Corp Winding reel
GB1453219A (en) * 1973-11-02 1976-10-20 Kanebo Ltd Yarn feeding device for knitting machines
GB2158107A (en) * 1984-05-02 1985-11-06 Gustav Memminger Yarn feeding apparatus for yarn-processing textile machines such as circular knitting machines
DE3437252C1 (de) * 1984-10-11 1986-01-16 Gustav 7290 Freudenstadt Memminger Fadenspeicher- und -liefervorrichtung,insbesndere fuer Textilmaschinen
DE3601586C1 (de) * 1986-01-21 1987-05-27 Memminger Gmbh Fadenspeicher- und -liefervorrichtung,insbesondere fuer Textilmaschinen
DE3820618A1 (de) * 1988-06-17 1989-12-28 Gustav Memminger Fadenliefervorrichtung fuer kraeusel- oder andere effektgarne
US5802880A (en) * 1997-01-10 1998-09-08 Min; Lin Chung Improvement of yarn supply reel and yarn guide for knitting machines
US6131842A (en) 1998-03-14 2000-10-17 Memminger-Iro Gmbh Yarn feeder with improved yarn travel
DE20011831U1 (de) * 2000-07-07 2000-12-28 Chen Jen Hui Garnzubringerrad
DE19932485A1 (de) * 1999-07-12 2001-01-18 Memminger Iro Gmbh Lagereinrichtung, insbesondere für Fadenliefergeräte
EP1710334A1 (de) 2005-04-06 2006-10-11 L.G.L. Electronics S.p.A. Fadenliefergerät mit positiver Fadenlieferung für Textilmaschinen

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2175218A (en) * 1936-06-20 1939-10-10 Ind Rayon Corp Winding reel
GB1453219A (en) * 1973-11-02 1976-10-20 Kanebo Ltd Yarn feeding device for knitting machines
GB2158107A (en) * 1984-05-02 1985-11-06 Gustav Memminger Yarn feeding apparatus for yarn-processing textile machines such as circular knitting machines
DE3437252C1 (de) * 1984-10-11 1986-01-16 Gustav 7290 Freudenstadt Memminger Fadenspeicher- und -liefervorrichtung,insbesndere fuer Textilmaschinen
US4669677A (en) 1984-10-11 1987-06-02 Gustav Memminger Yarn storage and delivery arrangement, particularly for textile machines
DE3601586C1 (de) * 1986-01-21 1987-05-27 Memminger Gmbh Fadenspeicher- und -liefervorrichtung,insbesondere fuer Textilmaschinen
DE3820618A1 (de) * 1988-06-17 1989-12-28 Gustav Memminger Fadenliefervorrichtung fuer kraeusel- oder andere effektgarne
US5802880A (en) * 1997-01-10 1998-09-08 Min; Lin Chung Improvement of yarn supply reel and yarn guide for knitting machines
US6131842A (en) 1998-03-14 2000-10-17 Memminger-Iro Gmbh Yarn feeder with improved yarn travel
DE19932485A1 (de) * 1999-07-12 2001-01-18 Memminger Iro Gmbh Lagereinrichtung, insbesondere für Fadenliefergeräte
DE20011831U1 (de) * 2000-07-07 2000-12-28 Chen Jen Hui Garnzubringerrad
EP1710334A1 (de) 2005-04-06 2006-10-11 L.G.L. Electronics S.p.A. Fadenliefergerät mit positiver Fadenlieferung für Textilmaschinen

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20120435A1 (it) * 2012-05-17 2013-11-18 Lgl Electronics Spa Alimentatore di filato a tamburo rotante per macchine tessili.
EP2664569A1 (de) 2012-05-17 2013-11-20 L.G.L. Electronics S.p.A. Garnzuführung mit Drehtrommeln für Textilmaschinen
EP2708625A1 (de) 2012-09-17 2014-03-19 L.G.L. Electronics S.p.A. Fadenzufuhrgerät mit Drehtrommel für Strickverfahren mit Auswahl des Garns
EP2868608A1 (de) 2013-10-29 2015-05-06 L.G.L. Electronics S.p.A. Positive Fadenzufuhrvorrichtung mit Steuerung der Zufuhrspannung
CN107055197A (zh) * 2015-10-21 2017-08-18 村田机械株式会社 纱线卷取装置
ITUB20160067A1 (it) * 2016-01-26 2017-07-26 Lgl Electronics Spa Dispositivo di recupero di filato per apparati tessili.
CN106995973A (zh) * 2016-01-26 2017-08-01 爱吉尔电子股份公司 用于纺织设备的纱线回收装置
EP3199680A1 (de) 2016-01-26 2017-08-02 L.G.L. Electronics S.p.A. Garnrückgewinnungsvorrichtung für textilvorrichtungen
EP3199680B1 (de) 2016-01-26 2020-01-15 L.G.L. Electronics S.p.A. Garnrückgewinnungsvorrichtung für textilvorrichtungen

Also Published As

Publication number Publication date
EP2218670B1 (de) 2011-03-16
DE602009000914D1 (de) 2011-04-28

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