EP1695935A2 - Fournisseur de fil de trame pour machines textiles, pourvu d'un dispositif de freinage de fil - Google Patents

Fournisseur de fil de trame pour machines textiles, pourvu d'un dispositif de freinage de fil Download PDF

Info

Publication number
EP1695935A2
EP1695935A2 EP06000776A EP06000776A EP1695935A2 EP 1695935 A2 EP1695935 A2 EP 1695935A2 EP 06000776 A EP06000776 A EP 06000776A EP 06000776 A EP06000776 A EP 06000776A EP 1695935 A2 EP1695935 A2 EP 1695935A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
feeder
frustoconical
frame
annular
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Withdrawn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
EP06000776A
Other languages
German (de)
English (en)
Other versions
EP1695935A3 (fr
Inventor
Pietro Zenoni
Giovanni 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 EP1695935A2 publication Critical patent/EP1695935A2/fr
Publication of EP1695935A3 publication Critical patent/EP1695935A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • D03D47/364—Yarn braking means acting on the drum
    • D03D47/366—Conical

Definitions

  • the present invention relates to a weft feeder for textile machines, provided with a thread-braking device.
  • a general weft feeder for textile machines comprises a stationary cylinder on which a motorized swivel arm winds a plurality of thread loops forming a weft reserve.
  • the thread is unwound upon request from the loom and passes through a thread-guide eyelet arranged coaxial to the cylinder.
  • a braking device which comprises a hollow, frustoconical member that is arranged coaxial to the drum and engages a beveled delivery edge of the cylinder with its internal surface.
  • the frustoconical member consists of a plurality of metal elastic foils arranged to form a frustoconical surface, which foils are interconnected along the larger perimeter of such surface and are free at the smaller perimeter thereof.
  • the frustoconical member is supported by the weft feeder via a Cardan joint which allows it to swing with respect to the cylinder about two orthogonal axes, whereby the braking member has a limited capability of self-centering with respect to the cylinder in order to improve the uniformity of the braking action along the delivery edge of the cylinder.
  • the frustoconical member in its settling action against the delivery edge of the cylinder, is constrained to rotate about the two orthogonal axes of the Cardan joint, and it can not even shift radially, such as required, e.g., for compensating the tolerances. Therefore, the capability of self-centering of the braking member is very limited, and the uniformity and the accuracy of the braking action is consequently affected.
  • a weft feeder 10 comprises a motor housing 11 which coaxially supports a stationary cylinder 12 on which a motorized swivel arm 13 winds a plurality of thread loops F forming a weft reserve.
  • the thread is unwound from cylinder 12 and passes through a thread-guide eyelet 14 that is supported on a stationary arm 15 projecting from motor housing 11 parallel to the cylinder.
  • a braking device comprising a frustoconical braking member 16 that is arranged with its larger perimeter in front of the delivery end of cylinder 12, which is provided with a beveled delivery edge 12r.
  • Frustoconical member 16 consists of a plurality of substantially radial foils 16a made of a metal sheet, which foils are arranged to form a frustoconical surface and are interconnected along the larger perimeter of the frustoconical surface to form a continuous, annular portion 16b.
  • the foils project from the continuous, annular portion of the sheet with a certain angle with respect to the generatrix of the conical surface, and after a short length they deviate to an opposite, sloping direction, which they follow as far as their free ends, which define the smaller perimeter of the surface.
  • the frustoconical member is housed within a basket-shaped frame 17 having a larger-in-diameter, annular rim 17a connected to a coaxial, smaller-in-diameter, annular rim 17b via a structure 17c.
  • Annular portion 16b of frustoconical member 16 is clamped between the internal surface of larger-in-diameter, annular rim 17a and an elastic ring 18 that is provided with a peripheral groove 18a, in which annular portion 16b and rim 17a are sandwiched, and with toothed arms 18b that restrainedly engage rim 17a.
  • the free ends of the foils lie on the smaller-in-diameter rim 17b of the frame, so that each foil acts as an elastic member similar to a leaf spring.
  • Frame 17 is suspended at the middle of a spider assembly of helical spring such as 19 having one end anchored to smaller-in-diameter rim 17b of the frame and the opposite end anchored to an annular support 20 provided with respective anchor brakets such as 20a for the springs.
  • Annular support 20 is provided with respective toohed wings such as 20b by which it is connected to a mounting ring 21 integral with a slide 22 that is movable along stationary arm 15 under control of a screw gear mechanism (not shown). The latter is operable via a knob 23 that may be operated for adjusting the static contact pressure applied upon the cylinder by braking member 16.
  • frustoconical member 14 By operating knob 23 to drive frustoconical member 16 towards cylinder 12, the former geometrically matches with the beveled, delivery edge 12r of the latter.
  • braking member As frustoconical member 14 is supported on a spider assembly of springs, braking member is free to move to any direction and to center accurately its position with respect to the cylinder, which circumstance allows it to engage the beveled edge 12r of the cylinder regularly and with a uniform pressure along the edge. In fact, in its settling action against the delivery edge of the drum, frustoconical member 14 can rotate and shift freely to any direction, i.e., without being guided by anything.
  • helical springs can be replaced by other elongated elastic elements such as, e.g., elastic ropes of a synthetic material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP06000776A 2005-02-25 2006-01-14 Fournisseur de fil de trame pour machines textiles, pourvu d'un dispositif de freinage de fil Withdrawn EP1695935A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO20050028 ITTO20050028U1 (it) 2005-02-25 2005-02-25 Alimentatore di trama per macchine tessili con dispositivo di frenatura del filato

Publications (2)

Publication Number Publication Date
EP1695935A2 true EP1695935A2 (fr) 2006-08-30
EP1695935A3 EP1695935A3 (fr) 2008-10-01

Family

ID=36693923

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06000776A Withdrawn EP1695935A3 (fr) 2005-02-25 2006-01-14 Fournisseur de fil de trame pour machines textiles, pourvu d'un dispositif de freinage de fil

Country Status (3)

Country Link
EP (1) EP1695935A3 (fr)
CN (1) CN1824863A (fr)
IT (1) ITTO20050028U1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1133900B (it) * 1980-10-15 1986-07-24 Roy Electrotex Spa Mezzi per effettuare la frenatura del filato in uscita in dispositivi alimentatori di filato a tensione costante e regolabile,particolarmente per macchine tessili
EP0285592A1 (fr) * 1987-03-13 1988-10-05 Picanol N.V. Dispositif fournisseur amélioré pour machines à tisser.
EP0754645A1 (fr) * 1995-07-18 1997-01-22 L.G.L. ELECTRONICS S.p.A. Dispositif électropneumatique pour enfiler automatiquement un fournisseur de fil de trame et fournisseur de fil de trame qui comprend ce dispositif
WO1999020557A1 (fr) * 1997-10-15 1999-04-29 Nuova Roj Electrotex S.R.L. Dispositif de freinage de fil dans des predelivreurs pour metier a tisser et element de frein dudit dispositif
WO1999064337A1 (fr) * 1998-06-10 1999-12-16 Nuova Roj Electrotex S.R.L. Frein de fil, en particulier pour des fournisseurs de fils dans des metiers
WO2000020316A1 (fr) * 1998-10-07 2000-04-13 Iro Patent Ag Tendeur de fil et dispositif de fourniture de fil equipe d'un tel tendeur
EP1243542A2 (fr) * 2001-03-20 2002-09-25 L.G.L. Electronics S.p.A. Dispositif de freinage de fil autoréglable pour fournisseurs de fil

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1133900B (it) * 1980-10-15 1986-07-24 Roy Electrotex Spa Mezzi per effettuare la frenatura del filato in uscita in dispositivi alimentatori di filato a tensione costante e regolabile,particolarmente per macchine tessili
EP0285592A1 (fr) * 1987-03-13 1988-10-05 Picanol N.V. Dispositif fournisseur amélioré pour machines à tisser.
EP0754645A1 (fr) * 1995-07-18 1997-01-22 L.G.L. ELECTRONICS S.p.A. Dispositif électropneumatique pour enfiler automatiquement un fournisseur de fil de trame et fournisseur de fil de trame qui comprend ce dispositif
WO1999020557A1 (fr) * 1997-10-15 1999-04-29 Nuova Roj Electrotex S.R.L. Dispositif de freinage de fil dans des predelivreurs pour metier a tisser et element de frein dudit dispositif
WO1999064337A1 (fr) * 1998-06-10 1999-12-16 Nuova Roj Electrotex S.R.L. Frein de fil, en particulier pour des fournisseurs de fils dans des metiers
WO2000020316A1 (fr) * 1998-10-07 2000-04-13 Iro Patent Ag Tendeur de fil et dispositif de fourniture de fil equipe d'un tel tendeur
EP1243542A2 (fr) * 2001-03-20 2002-09-25 L.G.L. Electronics S.p.A. Dispositif de freinage de fil autoréglable pour fournisseurs de fil

Also Published As

Publication number Publication date
CN1824863A (zh) 2006-08-30
ITTO20050028U1 (it) 2006-08-26
EP1695935A3 (fr) 2008-10-01

Similar Documents

Publication Publication Date Title
EP2014809B1 (fr) Fournisseur de trame pour machine textile avec dispositif de freinage de trame
EP2829647B1 (fr) Dispositif d'alimentation en fil pourvu d'un tambour à canetage et avec dispositif double face commandé par rétroaction
KR101433706B1 (ko) 텐션장치 및 텐션부여방법
US9353468B2 (en) Yarn feeder provided with a stationary drum and with a controlled, weft-braking device
EP2924156B1 (fr) Dispositif de freinage de fil pour dispositifs d'alimentation en fil de stockage
EP0622485B1 (fr) Dispositif de freinage modulé du fil pour fournisseurs de trame
RU2009115867A (ru) Устройство для компенсации изменений длины кабелей, натянутых, по существу, с постоянным натяжением
US9303338B2 (en) Weft-braking device for yarn feeders provided with a stationary drum
JPH0270671A (ja) ボビンの支持ローラに対する接触圧を制御するための方法及び装置
EP0284144B1 (fr) Dispositif et procédé pour le stockage et la reprise par intermittence de fil pendant le bobinage de bobines coniques alimentées en fil à vitesse constante
US20060261206A1 (en) Bobbin winding device
EP1695935A2 (fr) Fournisseur de fil de trame pour machines textiles, pourvu d'un dispositif de freinage de fil
US4854511A (en) Device and method for intermittently storing and returning yarn during the winding of conical bobbins fed with yarn at constant speed
EP1624098B1 (fr) Fournisseur de trame pour métiers à tisser avec un frein de fil à ajustage automatique
EP1717181A1 (fr) Dispositif de frein de fil dans des fournisseurs de trame pour des machines de textiles
EP3608460A1 (fr) Dispositif de freinage de trame pour fournisseurs de fil d'accumulateur
EP3575253A1 (fr) Dispositif d'alimentation de fil avec bobine d'enroulement de fil motorisée et système de rembobinage
EP3521493B1 (fr) Dispositif d'alimentation de fil avec dispositif de freinage de trame commandé par rétroaction
KR100362835B1 (ko) 직기용사운반장치
US4074729A (en) Apparatus for selectively detaining and releasing weft yarns in weaving loom
EP2853626B1 (fr) Dispositif d'alimentation de fil avec tambour de stockage
EP3392384B1 (fr) Dispositif de freinage de trame pour fournisseurs de fil d'accumulateur et fournisseur faisant appel à un tel dispositif de freinage de trame
US4858837A (en) Device and method for intermittently storing and returning yarn during the winding of conical bobbins fed with yarn at constant speed
US20220403830A1 (en) Elastic motor
CN217516431U (zh) 一种自动送线设备

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

RIC1 Information provided on ipc code assigned before grant

Ipc: D03D 47/36 20060101ALI20080827BHEP

Ipc: B65H 51/22 20060101AFI20060602BHEP

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20090402