IT1256898B - IMPROVEMENT OF WEFT FEEDERS FOR AIR FRAMES. - Google Patents

IMPROVEMENT OF WEFT FEEDERS FOR AIR FRAMES.

Info

Publication number
IT1256898B
IT1256898B ITTO920643A ITTO920643A IT1256898B IT 1256898 B IT1256898 B IT 1256898B IT TO920643 A ITTO920643 A IT TO920643A IT TO920643 A ITTO920643 A IT TO920643A IT 1256898 B IT1256898 B IT 1256898B
Authority
IT
Italy
Prior art keywords
yarn
pin
drum
crew
winding
Prior art date
Application number
ITTO920643A
Other languages
Italian (it)
Inventor
Pietro Zenoni
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 ITTO920643A priority Critical patent/IT1256898B/en
Publication of ITTO920643A0 publication Critical patent/ITTO920643A0/en
Priority to EP93830309A priority patent/EP0581745B1/en
Priority to DE69305028T priority patent/DE69305028T2/en
Publication of ITTO920643A1 publication Critical patent/ITTO920643A1/en
Application granted granted Critical
Publication of IT1256898B publication Critical patent/IT1256898B/en

Links

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
    • D03D47/363—Construction or control of the yarn retaining devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Abstract

L'alimentatore comprende un tamburo fisso (12), un disco girevole (13) per avvolgere su detto tamburo una riserva di filato da alimentare al telaio ed un arresto elettromagnetico (16) per bloccare lo svolgimento del filato dal tamburo dopo il conteggio, attuato a mezzo di una cellula fotoelettrica, di un prefissato numero di spire di filato. L'arresto elettromagnetico (16) comprende un magnete permanente (18) cooperante con un nucleo magnetico fisso provvisto di un traferro anulare nel quale è passante un equipaggio mobile (24) che reca un avvolgimento attraversato da una corrente di eccitazione. L'equipaggio mobile (24) è dotato alla sua estremità di un dito (17) di arresto del filato, è calzato senza impegno di contatto su un prolungamento e perno del magnete (18) ed è elasticamente sospeso, con possibilità di movimento assiale in rapporto al perno, da una coppia di molle a lamina aventi anche la funzione di organi di ritegno e di centraggio di detto equipaggio mobile (24) in rapporto a detto perno.(Rif. Fig. 1).The feeder comprises a fixed drum (12), a rotating disk (13) for winding on said drum a reserve of yarn to be fed to the loom and an electromagnetic stop (16) for blocking the unwinding of the yarn from the drum after counting, carried out by means of a photoelectric cell, of a predetermined number of turns of yarn. The electromagnetic stop (16) comprises a permanent magnet (18) cooperating with a fixed magnetic core provided with an annular air gap in which a mobile crew (24) is passing which carries a winding crossed by an excitation current. The mobile crew (24) is equipped with a thread stop finger (17) at its end, is fitted without engagement of contact on an extension and pin of the magnet (18) and is elastically suspended, with the possibility of axial movement in relationship to the pin, by a pair of leaf springs also having the function of retaining and centering members of said movable crew (24) in relation to said pin (Ref. Fig. 1).

ITTO920643A 1992-07-27 1992-07-27 IMPROVEMENT OF WEFT FEEDERS FOR AIR FRAMES. IT1256898B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ITTO920643A IT1256898B (en) 1992-07-27 1992-07-27 IMPROVEMENT OF WEFT FEEDERS FOR AIR FRAMES.
EP93830309A EP0581745B1 (en) 1992-07-27 1993-07-20 Improvement of weft feeders for pneumatic looms
DE69305028T DE69305028T2 (en) 1992-07-27 1993-07-20 Improvement of weft feeders for pneumatic weaving machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO920643A IT1256898B (en) 1992-07-27 1992-07-27 IMPROVEMENT OF WEFT FEEDERS FOR AIR FRAMES.

Publications (3)

Publication Number Publication Date
ITTO920643A0 ITTO920643A0 (en) 1992-07-27
ITTO920643A1 ITTO920643A1 (en) 1994-01-27
IT1256898B true IT1256898B (en) 1995-12-27

Family

ID=11410641

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO920643A IT1256898B (en) 1992-07-27 1992-07-27 IMPROVEMENT OF WEFT FEEDERS FOR AIR FRAMES.

Country Status (3)

Country Link
EP (1) EP0581745B1 (en)
DE (1) DE69305028T2 (en)
IT (1) IT1256898B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1271787B (en) * 1994-12-22 1997-06-09 Roj Electrotex Nuova Srl ELECTROMAGNETIC WIRE STOP STOP UNIT FOR MEASURING HOLDERS
IT1303155B1 (en) * 1998-07-17 2000-10-30 Lgl Electronics Spa IMPROVEMENT OF THE YARN STOP DEVICES, IN THE PRE-MEASURING ROTARY EQUIPMENT FOR AIR WEAVING FRAMES.
DE10252604A1 (en) * 2002-11-12 2004-05-27 Iropa Ag Weft yarn feed unit, for a jet loom, has neighboring stop tines at the yarn store body to give a controlled take-off in measured lengths in a trouble-free intermittent control action

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3774785D1 (en) * 1986-07-15 1992-01-09 Sulzer Ag METHOD FOR THE OPERATION OF A Weft Thread Storage Device For A Weaving Machine.
IT1230561B (en) * 1988-10-14 1991-10-28 Roy Electrotex Spa ELECTROMAGNETIC STOP UNIT OF THE WEFT WIRE IN MI-SURATORI PORGITRAMA FOR JET TEXTILE FRAMES
DE69018228T2 (en) * 1989-12-29 1995-08-31 Roy Electrotex Spa Weft feeder for jet looms.

Also Published As

Publication number Publication date
EP0581745B1 (en) 1996-09-25
EP0581745A1 (en) 1994-02-02
DE69305028D1 (en) 1996-10-31
DE69305028T2 (en) 1997-02-20
ITTO920643A0 (en) 1992-07-27
ITTO920643A1 (en) 1994-01-27

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950613