EP1796994B1 - Fadenzuführungsvorrichtung - Google Patents

Fadenzuführungsvorrichtung Download PDF

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Publication number
EP1796994B1
EP1796994B1 EP05787261A EP05787261A EP1796994B1 EP 1796994 B1 EP1796994 B1 EP 1796994B1 EP 05787261 A EP05787261 A EP 05787261A EP 05787261 A EP05787261 A EP 05787261A EP 1796994 B1 EP1796994 B1 EP 1796994B1
Authority
EP
European Patent Office
Prior art keywords
drive shaft
rod cage
cylinder surface
storage body
feeding device
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.)
Expired - Fee Related
Application number
EP05787261A
Other languages
English (en)
French (fr)
Other versions
EP1796994A1 (de
Inventor
Kurt Arne Gunnar Jacobsson
Per Ohlson
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.)
Iro AB
Original Assignee
Iro AB
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Filing date
Publication date
Application filed by Iro AB filed Critical Iro AB
Publication of EP1796994A1 publication Critical patent/EP1796994A1/de
Application granted granted Critical
Publication of EP1796994B1 publication Critical patent/EP1796994B1/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D04B15/482—Thread-feeding devices comprising a rotatable or stationary intermediate storage drum from which the thread is axially and intermittently pulled off; Devices which can be switched between positive feed and intermittent feed

Definitions

  • the invention relates to a yarn feeding device according to the preamble part of claim 1.
  • Yarn feeding devices of such types operate, e.g. on weaving machines or knitting machines, for the purpose of an improved yarn control with yarn separation at the stationary storage body. This means that the yarn windings formed on the periphery of the storage body are conveyed in the direction towards the withdrawal end of the storage body and at the same time are separated from each other.
  • a yarn separation functional principle known in practice on a stationary storage body is based on a wobbling motion of the separation rod cage in relation to the supporting rod cage, which wobbling motion is generated by the rotating driving shaft.
  • rods of the separation rod cage which are arranged between the rods of the supporting rod cage are tilted back and forth. These tilting motions at the same time are superimposed by alternating lifting movements and lowering movements of the rods of the separation rod cage.
  • Each rod of the separation rod cage out of a lowered position gradually first moves outwardly between two rods of the supporting rod cage, while the same rod during the subsequent and opposite tilting movement is lowered between the adjacent rods of the supporting rod cage.
  • the separation rod cage bearing structure of a yarn feeding device as known in practice is formed as a cylinder surface on the periphery of a bearing bushing.
  • the bearing bushing is arranged and fixed on an eccentric section of the driving shaft.
  • the eccentric and inclined cylinder surface is integrally formed on a rotatable hollow drive shaft of the stationary storage body.
  • the cylinder surface generates wobbling yarn feeding movements of a plurality of rod-shaped feed elements of the separation rod cage in relation to stationary rod-shaped elements of the supporting rod cage while the hollow drive shaft is rotating.
  • the cylinder surface is provided on an eccentric shaft portion in-between both ends of the hollow shaft.
  • One free end of the hollow shaft carries a driving pulley, while the other free end carries a yarn winding rotor.
  • a cylinder surface constitutes the separation rod cage bearing structure.
  • the cylinder surface is formed by the periphery of an outer bushing which is rotatably provided on an inner bushing and which can be secured in different relative rotational positions on the inner bushing.
  • the inner bushing in turn is seated on a section of the driving shaft.
  • EP 0 930 386 A discloses a yarn feeding device having a stationary storage body of variable outer diameter.
  • the storage body consists of a plurality of measuring drum segments and a plurality of feed drum segments.
  • the plurality of measuring drum segments is rotatably supported on a cylindrical surface of the drive shaft.
  • the plurality of feed drum segments is rotatably supported on a cylinder surface formed at that free end of a sleeve mounted on the drive shaft.
  • the sleeve is fixed on the drive shaft via a stop plate and a stop screw and such that the eccentricity and the inclination of the cylinder surface on the free end of the sleeve has a predetermined rotary position in relation to the rotary position of a winding yarn guide of the drive shaft.
  • US-A-2,289,390 discloses a winding reel rotatably mounted on a stationary axle.
  • the winding reel consists of a thread supporting rod cage and of a thread feeding rod cage.
  • the rods of both rod cages inter-engage with each other for a common rotation on the stationary axle.
  • the thread supporting rod cage rotates on a bearing bushing fixed about the stationary axle.
  • the thread feeding rod cage rotates about a bearing bushing fixed on a cylinder surface of the stationary axle.
  • the cylinder surface is integrally formed with the stationary axle and is both eccentric and inclined with respect to the axis of the stationary axle.
  • US-A-3,709,444 relates to a thread feeder having a rotatably driven storage body supported by a stationary axle.
  • the stationary axle has integrally formed cylinder surfaces for respective bearings of a driving pulley and a follower disc of the storage body.
  • the follower disc is supported via a bearing bushing on an inclined and eccentric cylinder surface of the stationary axle. The inclination and eccentricity causes a thread feed movement of thread feed elements connected between the driving pulley and the follower disc.
  • US-A-4,399,952 relates to a thread delivery apparatus having a rotatably driven storage body on a stationary axle.
  • the rotatably driven storage body consists of a driving pulley and of a feeder section containing two groups of rods.
  • the feeder section is supported on an inclined and eccentric cylinder surface of the stationary axle such that upon rotation of the storage body a wobbling movement of one group of the rods is caused in relation to the other group of rods.
  • the inclined and eccentric cylinder surface integrally formed at the free end of the drvice shaft further results in a significant structural simplification of the yarn feeding device, in particular in the interior of the storage body, avoids out-of-balance problems, and contributes to save weight.
  • a yarn feeding device F shown in Fig. 1 e.g. is a yarn feeding device for a knitting machine like a circular knitting machine.
  • the yarn feeding device F as well may be implemented at other types of knitting machines and/or with the construction principle as described in the following even may be used at weaving machines or at other textile machines.
  • the yarn feeding device F When used at knitting machines the yarn feeding device F e.g. has total longitudinal extension of only about 240 mm and a maximum lateral dimension of about 150 mm and a width of only about 80 mm.
  • the storage body indicated in Fig. 1 has an outer diameter of only about 60 mm.
  • the drive shaft 10 shown in Figs 2 to 4 has a maximum diameter of only about 15 mm. Totally seen it is a relatively small dimensioned or downsized yarn feeding device F, as is expedient for equipping circular knitting machines which operate with a plurality of such yarn feeding devices.
  • the yarn feeding device F in Fig. 1 has a housing 1 which contains a not shown drive motor and in which a drive shaft is rotatably supported which is driven for rotation by the drive motor.
  • the drive shaft defines by its drive shaft axis X the axis of a storage body K which is rotatably supported on the drive shaft, however, is hindered against co-rotation with the rotating drive shaft by known means (stationary storage body K).
  • stationary storage body K e.g. permanent magnets could be provided which in part are arranged in the storage body and in part in the housing and which are aligned with each other.
  • a winding disc 3 is firmly connected to the drive shaft which is not shown in Fig. 1 .
  • the winding disc 3 contains a winding eyelet 4.
  • the storage body K comprises a supporting rod cage 5 which is coaxial to the drive shaft and has substantially axially extending rods 6 which are separated in circumferential direction by interspaces 9, and a separation rod cage 7 which is received inside the supporting rod cage.
  • the separation rod cage 7 has as well substantially axially extending rods 8 which are spaced apart in circumferential direction.
  • the rods 8 are located in the interspaces 9 and are in circumferential direction dimensioned narrower than the interspaces 9.
  • the supporting surface formed by the rods 6 of the supporting rod cage 5 serves to support the yarn windings which are wound on side by side on the storage body K during the rotation of the winding disc 3 in relation to the storage body K.
  • the rods 8 of the separation rod cage have the task of conveying the yarn windings which are supported on the supporting rod cage 5 in withdrawal direction forwards (axially away from the winding disc 3) and at the same time to separate the yarn windings from each other.
  • the separation rod cage 7 is driven in relation to the supporting rod cage 5 with a wobbling movement during which each rod 8 alternatingly is tilted in withdrawal direction and opposite to the withdrawal direction, and at the same time exits during the tilting movement in withdrawal direction gradually from the interspace 9 outwardly beyond the periphery formed by the rods 6 and which is lowered during the tilting movement opposite to the withdrawal direction gradually back between the two adjacent rods 6.
  • This wobbling movement of the separation rod cage 7 is induced by a separation rod cage bearing structure L provided at the drive shaft 10 shown in Figs 2 to 4 .
  • the separation rod cage bearing structure L is eccentric in relation to the axis X of the drive shaft (eccentricity E in Fig. 3 ), and is inclined (inclination S in Fig. 3 ) as well.
  • the eccentricity E e.g., is offset in circumferential direction in relation to the inclination S by 90°. This 90° offset is only a selected offset measure out of a plurality of different and possible magnitudes of the offset.
  • the rods 6 of the supporting rod cage 5 are secured to a hub part 11 which rotatably is supported with the help of a rotary bearing 12 (either a plain bearing assembly or a roller bearing assembly) on a supporting rod cage bearing surface 13 which is coaxial to the axis X of the drive shaft.
  • a rotary bearing 12 either a plain bearing assembly or a roller bearing assembly
  • the separation rod cage 7 has an interior hub part 14 which is rotatably supported with the help of a rotary bearing 16 (a roller bearing assembly or a plain bearing assembly) on the separation rod cage bearing structure L.
  • the separation rod cage bearing structure L is a cylinder surface 17 formed at a free end 15 of the drive shaft 10 and integrally with the drive shaft 10.
  • the cylinder surface 17, e.g. is machined by turning and/or grinding.
  • the axis Y of the cylinder surface 17 is inclined obliquely in relation to the axis X of the drive shaft, and, in addition, is provided eccentrically in relation to the axis X of the drive shaft.
  • Fig. 2 shows clearly that the rod 8 shown on the right side is displaced outwardly in relation to the adjacent rods 6, while the rod 8 shown on the left side is set back in relation to the rods 6.
  • Fig. 4 illustrates in a simplified view the rotary bearing of the separation rod cage 7 on the separation rod cage bearing structure L, e.g. on the cylinder surface 17.
  • Fig. 4 also indicates the eccentricity and the inclination of the cylinder surface 17 in relation to the axis X of the drive shaft.
  • the axis Y of the cylinder surface 17, so to speak, is positioned askew in space in relation to the axis X of the drive shaft.
  • An eccentric annular shoulder 18 is formed in the drive shaft 10 between the cylinder surface 17 and the bearing surface 13.
  • a circumferential groove 19 is machined between the annular shoulder 18 and cylinder surface 17.
  • the free end 15 of the drive shaft 10 is formed with a threaded bore for a not shown fastening element.
  • the separation rod cage bearing structure L of the described embodiment is integrally formed at the free end 15 of the drive shaft 10.
  • the drive shaft 10 Due to the shown 90° offset between the eccentricity E and the inclination S ( Fig. 3 ) it is necessary to drive the drive shaft 10 with a certain predetermined direction of the rotation in order to achieve the conveying movement and the yarn separation in withdrawal direction.
  • the drive shaft 10 has to be substituted by another drive shaft which has a correspondingly inverted separation rod cage bearing structure.
  • the offset between the eccentricity and the inclination S could be selected such that a yarn separation and a conveying action correctly will result in withdrawal direction irrespective of the sense of the rotation.
  • the drive shaft 10 expediently, is made from steel and is at least machined by turning, preferably, at least in some sections by grinding.
  • the integrated arrangement of the cylinder surface 17 at the free end 15 simplifies the shaping of the cylinder 17, because there is good access for a machining tool to the free end 15.
  • the drive shaft 10 may be forged or pressed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Claims (1)

  1. Fadenliefervorrichtung für Strickmaschinen, wobei die Fadenliefervorrichtung (F) ein eine Antriebswelle (10) drehbar abstützendes Gehäuse (1) aufweist und die Antriebswelle (10) einen stationären Speicherkörper (K) trägt, der einen zu der Antriebswelle (10) koaxialen drehbaren Abstützungs-Stabkäfig (5) aufweist, der auf der Antriebswelle (10) des stationären Speicherkörpers (K) montiert ist, und ferner einen Separations-Stabkäfig (7), der im Inneren des Abstützungs-Stabkäfigs (5) angeordnet ist und eine Achse (Y) besitzt, die relativ zu der Achse (X) der Antriebswelle (10) schräggestellt und exzentrisch ist, wobei der Separations-Stabkäfig (7) auf einer Separations-Stabkäfig-Lagerungsstruktur (L) drehbar abgestützt ist, welche zum Induzieren einer taumelnden Bewegung des Separations-Stabkäfigs (7) in Relation zu dem Abstützungs-Stabkäfig (5) mit der Antriebswelle (10) verbunden ist, und welche Separations-Stabkäfig-Lagerungsstruktur (L) eine Zylinderoberfläche (17) ist, die in Relation zu der Achse (X) der Antriebswelle (10) so exzentrisch und schräggestellt ist, dass die Exzentrizität in Umfangsrichtung relativ zur Schrägstellung (S) versetzt ist, dadurch gekennzeichnet, dass die Zylinderfläche (17) integral an einem freien Ende (15) der Antriebswelle (10) ausgebildet ist, dass zwischen der Zylinderfläche (17) und einer benachbarten Abstützungs-Stabkäfig-Lagerungsfläche (13) eine exzentrische ringförmige Schulter (18) vorgesehen ist, die zur Achse (X) der Antriebswelle (10) koaxial ist, und dass zwischen der ringförmigen Schulter (18) und der Zylinderfläche (17) eine Umfangsnut (19) vorgesehen ist.
EP05787261A 2004-10-08 2005-09-16 Fadenzuführungsvorrichtung Expired - Fee Related EP1796994B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410049211 DE102004049211A1 (de) 2004-10-08 2004-10-08 Fadenliefergerät
PCT/EP2005/010003 WO2006037451A1 (en) 2004-10-08 2005-09-16 Yarn feeding device

Publications (2)

Publication Number Publication Date
EP1796994A1 EP1796994A1 (de) 2007-06-20
EP1796994B1 true EP1796994B1 (de) 2009-04-29

Family

ID=35462608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05787261A Expired - Fee Related EP1796994B1 (de) 2004-10-08 2005-09-16 Fadenzuführungsvorrichtung

Country Status (4)

Country Link
EP (1) EP1796994B1 (de)
CN (1) CN101052579B (de)
DE (1) DE102004049211A1 (de)
WO (1) WO2006037451A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018115631A1 (de) 2018-06-28 2020-01-02 Memminger-Iro Gmbh Fadenliefergerät und System mit einem Fadenliefergerät

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103696057A (zh) * 2013-11-30 2014-04-02 宁波屹立特沃纺织机械有限公司 一种集成式衬套托盘机构

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2289390A (en) * 1940-12-12 1942-07-14 Ind Rayon Corp Winding reel
DE1967177C2 (de) * 1969-08-19 1979-09-13 Ab Iro, Ulricehamn (Schweden) Fadenspeicher- und -liefervorrichtung für textile Fäden
FR2058148A5 (de) * 1969-08-19 1971-05-21 Texpatent Gmbh
FR759330A (fr) * 1980-03-03 1934-02-01 Chaise
IT8422055V0 (it) * 1984-06-04 1984-06-04 Roy Electrotex Spa Alimentatore di trama per telai di tessitura comportante mezzi perfezionati per accumulare la riserva di trama.
DE9117072U1 (de) * 1991-02-20 1995-07-27 Sobrevin Société de brevets industriels-Etablissement, Vaduz Liefervorrichtung für laufende Fäden
IT239807Y1 (it) * 1996-09-11 2001-03-13 Lgl Electronics Spa Dispositivo perfezionato di separazione delle spire di filato perapparecchi alimentatori di trama
JP3366243B2 (ja) * 1998-01-16 2003-01-14 津田駒工業株式会社 緯糸測長貯留装置におけるドラム径の設定装置
DE19941889A1 (de) * 1999-09-02 2001-03-08 Iro Patent Ag Baar Fadenliefergerät

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018115631A1 (de) 2018-06-28 2020-01-02 Memminger-Iro Gmbh Fadenliefergerät und System mit einem Fadenliefergerät

Also Published As

Publication number Publication date
CN101052579A (zh) 2007-10-10
CN101052579B (zh) 2012-03-07
WO2006037451A1 (en) 2006-04-13
EP1796994A1 (de) 2007-06-20
DE102004049211A1 (de) 2006-04-20

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