EP0405382A1 - Schussfadenzuführvorrichtung mit haspelartiger Trommel für Düsenwebmaschinen - Google Patents

Schussfadenzuführvorrichtung mit haspelartiger Trommel für Düsenwebmaschinen Download PDF

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Publication number
EP0405382A1
EP0405382A1 EP90111983A EP90111983A EP0405382A1 EP 0405382 A1 EP0405382 A1 EP 0405382A1 EP 90111983 A EP90111983 A EP 90111983A EP 90111983 A EP90111983 A EP 90111983A EP 0405382 A1 EP0405382 A1 EP 0405382A1
Authority
EP
European Patent Office
Prior art keywords
swift
hub
spokes
radial
adjustment element
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.)
Withdrawn
Application number
EP90111983A
Other languages
English (en)
French (fr)
Inventor
Giovanni Pietro Pedrini
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
Publication of EP0405382A1 publication Critical patent/EP0405382A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/362—Drum-type weft feeding devices with yarn retaining devices, e.g. stopping pins

Definitions

  • the present invention relates to a weft feeder device for textile machines, particularly for high-speed fluid (air or water) jet looms.
  • Weft feeders commonly termed weft holders, typically are devices provided with a fixed drum on which a rotating arm, driven by an electric motor, deposits and accumulates a reserve of turns of thread which are progressively removed by the loom or other textile machine with which the feeder is associated.
  • the weft reserve In the case of fluid-jet loom feeding, the weft reserve must -- as is known -- be constituted by a whole number of turns the overall extension whereof corresponds to a portion of thread equal to the height of the fabric being produced.
  • Adjustment occurs by trial and error, and it is therefore important to provide the swift with means suitable on one hand to allow the simultaneous and gradual movement of the spokes and on the other to facilitate the adjustment operation and at the same time make it rapid and accurate.
  • the aim of the present invention is to provide a weft feeder device with swift-like drum as specified which has spoke adjusting means which are suitable for meeting said requirements.
  • a further object of the invention is to provide a feeder device which has a simplified structure, is highly reliable in operation and has modest production costs.
  • the present invention relates to a weft feeder device with swift-like drum which is characterized in that the hub of the drum has a frustum-shaped adjustment element on which the skid-like ends of the swift spokes rest with an elastic contact, said ends having a corresponding complementary taper; the frustum-shaped element being axially guided and movable and being provided with a threaded axial seat with which there co-operates an internally threaded shaft which, actuated from the outside, produces axial movements of said element and corresponding radial movements of the spokes in order to vary the polygonal perimeter of the swift.
  • the reference numeral 10 generally indicates the weft feeder device, which comprises a fixed base 11 which is traversed by an axially hollow drive shaft 12 to which a hollow cantilevered arm 13 is connected in a per se known manner.
  • the thread F passes in the cavity of the shaft 12 and of the arm 13 and unwinds from a reel, not illustrated, and is wound by the arm 13 on a fixed swift 14 so as to form a reserve of turns S suitable for being removed by the loom or other textile machine.
  • the fixed swift 14 is rigidly coupled to a disk 15 which is mounted so as to be freely rotatable on the shaft 12 with the interposition of a bush 16 and of a pair of roller bearings 17.
  • the disk 15 is prevented from rotating with respect to the shaft 12 by virtue of the action of permanent magnets 18 which co-operate with corresponding magnets 19 supported by the fixed base 11.
  • a cylindrical raised portion 15a is defined on the disk 15, and the hollow hub 20 of the swift 14 is fitted thereon.
  • An annular radial raised portion 21 is defined in the median part of the hub 20 and bears the seat for a central bearing 22.
  • the raised portion 21 is furthermore provided with a plurality of through holes 23 in which columns 24 for the axial guiding and torsional retention of an adjustment element are slidable; said adjustment element is constituted by a frustum-shaped disk 25 which is axially movable in the cavity of the hub 20.
  • Said disk has a threaded axial seat which engages the correspondingly threaded portion 26 of an internally threaded actuation shaft 27 which is supported so as to be freely rotatable by the bearing 22 and by a further bearing 28 which is supported by a front flange 29 which is rigidly coupled to the hub 20 by means of peripheral screws 30 and acts as cover for the cavity of the hub.
  • a hexagonal seat 31 for the engagement of an actuation wrench is defined on the head of the internally threaded shaft 27; said wrench is passed through a front opening 32 of the flange 29.
  • the pad-like ends 35 of the spokes 36 of the swift 14 rest on the adjustment element 25 and are pushed into elastic contact by corresponding radial springs 33 which are contained in respective blind seats 34 of the hub; the spokes are radially guided in corresponding radial seats 37 defined between the hub 20 and the front flange 29.
  • a ring 29a inserted between the flange 29 and the hub 20, acts as stop element for the maximum radial expansion of the spokes by limiting the axial stroke of the adjustment element 25.
  • the spokes 36 which are preferably made of polymeric material, are fitted with metallic rods 38 the ends whereof are accommodated in grooves 39 of the disk 15 and respectively in radial holes 40 of the front flange 29 in order to ensure the regular unwinding of the thread.
  • the connecting screws 30 of the flange 29 are first loosened, releasing the spokes 36 from the clamping action exerted by said flange; then, by acting on a suitable wrench such as an Allen wrench inserted into the opening 32, the internally threaded shaft 27 is rotated and the adjustment element 25 is consequently moved axially, and this leads to a corresponding simultaneous radial movement of the spokes 36 of the swift.
  • a suitable wrench such as an Allen wrench inserted into the opening 32
  • the internally threaded shaft 27 is rotated and the adjustment element 25 is consequently moved axially, and this leads to a corresponding simultaneous radial movement of the spokes 36 of the swift.
  • the screws 30 are tightened, locking the spokes in the required position by virtue of the clamping action of the flange 29. Adjustment occurs between the two extremes of maximum and minimum perimetric extension which are respectively illustrated in figures 1 and 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP90111983A 1989-06-29 1990-06-25 Schussfadenzuführvorrichtung mit haspelartiger Trommel für Düsenwebmaschinen Withdrawn EP0405382A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8967533A IT1232531B (it) 1989-06-29 1989-06-29 Dispositivo alimentatore di trama con tamburo ad aspo per telai di tessitura a getto di fluido
IT6753389 1989-06-29

Publications (1)

Publication Number Publication Date
EP0405382A1 true EP0405382A1 (de) 1991-01-02

Family

ID=11303213

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90111983A Withdrawn EP0405382A1 (de) 1989-06-29 1990-06-25 Schussfadenzuführvorrichtung mit haspelartiger Trommel für Düsenwebmaschinen

Country Status (2)

Country Link
EP (1) EP0405382A1 (de)
IT (1) IT1232531B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100441761C (zh) * 2002-02-08 2008-12-10 爱吉尔电子股份公司 带有将固定筒连接到电动机壳体上的系统的纬纱进给装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3429219A1 (de) * 1984-08-08 1986-02-20 Sobrevin Société de brevets industriels-Etablissement, Vaduz Fadenspeicher- und liefervorrichtung
US4756344A (en) * 1986-07-14 1988-07-12 Tsudakoma Corp. Pick length setting method and device for use with a picking apparatus
EP0290380A1 (de) * 1987-04-24 1988-11-09 GebràœDer Sulzer Aktiengesellschaft Schussfadenspeicher mit automatischer Fadenabmessung für Webmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3429219A1 (de) * 1984-08-08 1986-02-20 Sobrevin Société de brevets industriels-Etablissement, Vaduz Fadenspeicher- und liefervorrichtung
US4756344A (en) * 1986-07-14 1988-07-12 Tsudakoma Corp. Pick length setting method and device for use with a picking apparatus
EP0290380A1 (de) * 1987-04-24 1988-11-09 GebràœDer Sulzer Aktiengesellschaft Schussfadenspeicher mit automatischer Fadenabmessung für Webmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100441761C (zh) * 2002-02-08 2008-12-10 爱吉尔电子股份公司 带有将固定筒连接到电动机壳体上的系统的纬纱进给装置

Also Published As

Publication number Publication date
IT1232531B (it) 1992-02-19
IT8967533A0 (it) 1989-06-29

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