EP0286589A1 - Dispositif d'emmagasinage de fil de trame pour métier à tisser - Google Patents

Dispositif d'emmagasinage de fil de trame pour métier à tisser Download PDF

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Publication number
EP0286589A1
EP0286589A1 EP88810185A EP88810185A EP0286589A1 EP 0286589 A1 EP0286589 A1 EP 0286589A1 EP 88810185 A EP88810185 A EP 88810185A EP 88810185 A EP88810185 A EP 88810185A EP 0286589 A1 EP0286589 A1 EP 0286589A1
Authority
EP
European Patent Office
Prior art keywords
thread
drum
weft
thread clamp
cooling air
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Withdrawn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
EP88810185A
Other languages
German (de)
English (en)
Inventor
Antonius Josephus Maria Hamer
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.)
Sulzer AG
Original Assignee
Sulzer AG
Gebrueder Sulzer AG
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 Sulzer AG, Gebrueder Sulzer AG filed Critical Sulzer AG
Publication of EP0286589A1 publication Critical patent/EP0286589A1/fr
Withdrawn legal-status Critical Current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
    • 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

Definitions

  • the invention relates to a weft store for a loom with a stationary drum for storing a supply of weft and for the spontaneous release of part of the supply during the weft insertion into the loom and with an electromagnetic thread clamp or a locking pin for holding the weft on the drum circumference at the end of the weft insertion.
  • a weft store is described in Swiss Patent No. 647,999.
  • the thread clamp must be closed very quickly at the end of a weft insertion from the relevant weft thread store, so that a precisely dimensioned length of a weft thread is entered into the weaving machine.
  • the locking pin of the thread clamp must reach the closing position within the time required for a thread turn to be pulled off the circumference of the drum.
  • this object is achieved in that cooling air is conducted into the thread clamp.
  • the cooling air flows through the thread clamp parallel to the direction of movement of the magnet and at least one of the stop elements for the locking element in the thread clamp and the space between the magnet winding and the magnet armature.
  • the cooling air leaves the thread clamp through openings directed against the drum, with which the cooling air is still used for cleaning the drum surface in the area of the thread clamp by blowing off flight deposits from the weft thread and other dirt particles.
  • the weft thread 10 to be processed in the weaving machine 30 is drawn off from a yarn bobbin 100 by the weft thread store 1, in that a winder 12 winds the weft thread in several turns on a stationary drum 11, whereupon the weft thread 10 through the control device 19 and the blowing nozzle 33 into the through the warp threads 31 and 32 of the weaving machine 30 formed shed is entered.
  • the weft thread enters the weft thread store 1 through the funnel 172 of the winder shaft 17 and then passes through the winder 12 which is fastened in the winder shaft and which is formed from the eyelets 121 and 122 and the tube 120 located therebetween.
  • a rod 173 is located diametrically opposite the winder as a mass balance.
  • the winder shaft 17 is mounted in the bearings 171 in the housing 15 and is driven by a controlled electric motor 13 via the belt drive 140, 141 and 142.
  • the drum 11 of the weft thread store is mounted on the winder shaft by means of the radial bearing 18. It is prevented from rotating by magnet pairs 16, one of which is located in the housing 15 and another in the drum 11.
  • the drum shell 113 of the drum extends only partially over the circumference of the drum.
  • the drum is formed by brackets 110, the bent ends of which converge radially at flange 111.
  • the flange 111 serves to hold the stirrups 110 in place and enables radial adjustment of the stirrups so that the drum circumference can be changed in accordance with the weft thread length required in the weaving machine 30.
  • the weft threads slip further to the right in FIG. 2 onto the cylindrical part of the drum 11, in order to then be drawn off discontinuously.
  • the start and end of the pulling process are controlled by the locking pin 21 of a thread clamp 2.
  • the pin can be moved radially against the stop 22 in the drum 11 by the electromagnet 20.
  • the electromagnet 20 comprises, as essential functional parts, the magnetic winding 25, the armature 26, which together with the locking pin 21 forms the locking member, and the leaf spring rings 37, which guide the locking member within the electromagnet 20.
  • the magnet armature 26 In the rest position, the magnet armature 26 is pressed against the stop buffer 28 by the compression spring 27 in the lower part of the electromagnet 20.
  • the stop plate 36 on the locking pin 21 has lifted from the stop 29 in this position.
  • the magnetic winding 25 is excited, the armature 26 is pulled downward against the force of the compression spring 27 in FIG. 3b, so that the locking pin 21 is pressed against the stop 22 on the drum 11.
  • the stop buffer 28 is seated in a connection piece for the air connection 23, through which compressed air can be conducted into the interior of the electromagnet 20.
  • the magnet armature 26 is in the rest position according to FIG resting hammer 35 acts as a shut-off device. Compressed air is therefore only consumed when the thread clamp 2 is in the working position. In the working position, the armature 26 is held in a defined position by the stop plate 36 resting on the stop 29.
  • the control device 19 which is essentially formed from the control ring 190, the transmitter 191 and the receiver 192, is fastened to the cap 112 by means of the bolts 114.
  • the control ring 190 is made of transparent material, for example plexiglass.
  • the balloon of the running weft is limited on its conical inside.
  • the trailing edge of the control ring 190 is protected by the wear ring 193, which is made of hardened steel or ceramic, for example.
  • the transmitter 191 forms a light barrier with the receiver 192.
  • Transmitter 191 and receiver 192 are each surrounded by a jacket 194.
  • the beam paths 195 and 195 ⁇ according to FIG. 4 are briefly interrupted by the weft thread 10 running from the drum 11, whereupon signals are emitted to a control (not shown).
  • the evaluation of the signals is explained in CH-PS No. 647 999.
  • the locking pin 21 is pressed against the stop 22 by means of the magnet 20, as a result of which the thread 10 is pulled off the drum 11 to a standstill.
  • the electric motor 13 in FIG. 1 has the task of driving the winder 12 via the belt drive 14 in such a way that the number of thread turns drawn off the drum 13 is immediately replaced by new winding of weft threads from the bobbin 100, so that there are always sufficient thread turns on the Drum 11 are in stock.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP88810185A 1987-04-08 1988-03-22 Dispositif d'emmagasinage de fil de trame pour métier à tisser Withdrawn EP0286589A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH134887 1987-04-08
CH1348/87 1987-04-08

Publications (1)

Publication Number Publication Date
EP0286589A1 true EP0286589A1 (fr) 1988-10-12

Family

ID=4208376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88810185A Withdrawn EP0286589A1 (fr) 1987-04-08 1988-03-22 Dispositif d'emmagasinage de fil de trame pour métier à tisser

Country Status (3)

Country Link
US (1) US4850401A (fr)
EP (1) EP0286589A1 (fr)
JP (1) JPS63270837A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2650816B2 (ja) * 1992-07-15 1997-09-10 日立金属株式会社 織機用横糸巻取機およびそれに使用されるマグネット部材
EP1811068B1 (fr) * 2006-01-24 2009-06-17 Sultex AG Frein de trame avec commande

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3123760A1 (de) * 1980-06-17 1982-02-25 Maschinenfabrik Rüti AG, 8630 Rüti, Zürich Fadenliefervorrichtung fuer textilmaschinen und verfahren zum betrieb der fadenliefervorrichtung
EP0111308A2 (fr) * 1982-12-13 1984-06-20 Nissan Motor Co., Ltd. Détecteur pour contrôler l'alimentation du fil de trame

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3599128A (en) * 1969-06-18 1971-08-10 Gen Motors Corp Control mechanism for simultaneously controlling operation of fluid and electrically operated devices
US3944774A (en) * 1974-08-07 1976-03-16 Toyota Jidosha Kogyo Kabushiki Kaisha Electric switch having a sealed casing
JPS53156056U (fr) * 1977-05-13 1978-12-07
IT8323187V0 (it) * 1983-10-07 1983-10-07 Roy Electrotex Spa Struttura perfezionata di elettromagnete per arrestare lo svolgimento del filo di trama in dispositivi porgitrama per telai di tessitura.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3123760A1 (de) * 1980-06-17 1982-02-25 Maschinenfabrik Rüti AG, 8630 Rüti, Zürich Fadenliefervorrichtung fuer textilmaschinen und verfahren zum betrieb der fadenliefervorrichtung
EP0111308A2 (fr) * 1982-12-13 1984-06-20 Nissan Motor Co., Ltd. Détecteur pour contrôler l'alimentation du fil de trame

Also Published As

Publication number Publication date
US4850401A (en) 1989-07-25
JPS63270837A (ja) 1988-11-08

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