EP0250359A1 - Dispositif d'emmagasinage de fils de trame pour métiers à tisser - Google Patents

Dispositif d'emmagasinage de fils de trame pour métiers à tisser Download PDF

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Publication number
EP0250359A1
EP0250359A1 EP87810192A EP87810192A EP0250359A1 EP 0250359 A1 EP0250359 A1 EP 0250359A1 EP 87810192 A EP87810192 A EP 87810192A EP 87810192 A EP87810192 A EP 87810192A EP 0250359 A1 EP0250359 A1 EP 0250359A1
Authority
EP
European Patent Office
Prior art keywords
drum
weft
support piece
clamping member
clamping
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.)
Granted
Application number
EP87810192A
Other languages
German (de)
English (en)
Other versions
EP0250359B1 (fr
Inventor
Cornelis Van Donk
Gerardus Cox
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 EP0250359A1 publication Critical patent/EP0250359A1/fr
Application granted granted Critical
Publication of EP0250359B1 publication Critical patent/EP0250359B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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 thread storage device for a weaving machine with a stationary drum and with a winding arm for winding weft yarn onto the circumference of the drum, with a separating device for several layers of thread turns, the total length of which is equal to the insertion length of the weft thread into the loom compartment, and with a device for clamping the weft thread at the outlet end of the drum, the weft thread being held on the drum circumference by means of a clamping element.
  • Such a memory is from the Japanese Utility Model Publication No. 7265/86 known.
  • a lever located outside the drum presses the weft thread around the circumference of the drum as long as no thread is to be pulled off the drum.
  • the mechanical drive of the lever requires a separate mounting of the drive shaft and thus additional space in the periphery of the storage drum.
  • the end of the lever hits the drum directly, which can damage delicate weft yarn when it is clamped.
  • the invention which solves this problem, is characterized in that inside the drum a clamping member can be arranged outwardly against the weft thread on the drum circumference and that outside the drum a clamping element for the weft thread is provided, which has a spring-loaded support piece for the weft thread and has the clamping member.
  • the clamping element is housed in a holding piece that secures the storage drum against rotation.
  • the support piece is slidably mounted in the holding piece. It can be made of rubber-elastic material and be spring-supported.
  • a rotatably mounted lever with a roller can be provided for driving the clamping member, the roller running on a cam on the drive shaft of the separating device. The lever can also be pulled outwards against the clamping element by an electromagnet, and in its outer position it presses both against a rigid stop and against the support piece.
  • the weft store with the clamping device according to the invention takes up practically the same space as a weft store without this device. It can also be used to process sensitive weft yarns without damaging the yarn during clamping.
  • the weft store 1 carries a winding arm 3 in a housing 2 by means of a bearing 4.
  • the weft 20 runs in the axis of the winding arm 3. It is deposited in a first roll 21 and a second roll 22 on the drum 24, which is expanded by brackets 7.
  • a memory of this type with a drum 24 and additional brackets 7 is described for example in the Swiss patent 639 711.
  • the drum is carried by a disc 8 together with the brackets 7.
  • the drum 24 is supported by a bearing 9b on a shaft 9a which rotates together with the winding arm 3.
  • a worm wheel 10 and, connected to it, a claw wheel 11 of the separating device for the weft thread windings 21 and 22 and the cam disc 12 are driven via the worm 9.
  • the clamping member 14 is also mounted in the form of a roller lever.
  • the roller 13 on the lever 14 runs on the rotating cam 12 and thus moves the lever 14 back and forth against the pressure of the spring 27 against the clamping element 15.
  • the clamping element 15 is accommodated in the holding piece 16.
  • the support piece 15a in the clamping element 15 can by means of a torsion spring 19a or Bending spring 16b according to FIGS. 2a and 2b are pressed against the stop surface 15c in FIG. 3.
  • the support piece 15a can be made of rubber-elastic material. It can also be used without a spring 19a or 16b if it fills the space in the clamping element 15.
  • the support piece 15a With a support plate 15b, for example made of ceramic. By touching the clamping member 14 with the support piece 15, this is moved in the bore 17 when the running thread piece 23 is clamped.
  • the clamping force of the thread piece 23 can be precisely determined by the choice of the spring constant of the springs 19a or 19b. Since the support piece 15a is relatively small and low in mass, the thread 23 is gently clamped when the clamping member 14 strikes the support piece 15a.
  • 5 shows a magnetic actuation of the clamping member 14.
  • the electromagnet 28 is able to pull the lever 14 from its dot-dash position into the extended position at the stop 29. When the magnet 28 is de-energized, the clamping member 14 is withdrawn by means of the spring 27 against the stop 26 inside the drum.
  • the clamping member 14 is here essentially in a slot 25 of the drum 24.
  • the operation of the memory is described for example in the Swiss patent 639 711.
  • the clamping device consisting of the clamping member 14 and the clamping element 15, determines the release of the weft thread 23 or the second weft thread winding 22 for the discharge from the drum when this thread winding has been pushed by the separating device 11 in the direction of the end of the drum 24 on the take-off side .
  • the withdrawal of the weft thread 22 is finished as soon as all turns of the thread in this section are removed from the drum.
  • the clamping member 14 is moved again against the clamping element 15 in order to hold the thread 23 again.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP87810192A 1986-06-16 1987-04-01 Dispositif d'emmagasinage de fils de trame pour métiers à tisser Expired - Lifetime EP0250359B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2428/86 1986-06-16
CH242886 1986-06-16

Publications (2)

Publication Number Publication Date
EP0250359A1 true EP0250359A1 (fr) 1987-12-23
EP0250359B1 EP0250359B1 (fr) 1990-01-17

Family

ID=4233574

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87810192A Expired - Lifetime EP0250359B1 (fr) 1986-06-16 1987-04-01 Dispositif d'emmagasinage de fils de trame pour métiers à tisser

Country Status (4)

Country Link
US (1) US4781225A (fr)
EP (1) EP0250359B1 (fr)
JP (1) JPS62299552A (fr)
DE (1) DE3761444D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0344100A1 (fr) * 1988-05-20 1989-11-29 GebràœDer Sulzer Aktiengesellschaft Dispositif électromagnétique pour métiers à tisser
WO1993004225A1 (fr) * 1991-08-22 1993-03-04 Iro Ab Fournisseur de mesure
EP0624670A1 (fr) * 1987-06-16 1994-11-17 Ichikawa Co.,Ltd. Dispositif de réglage pour un métier à tisser
WO1998037265A1 (fr) * 1997-02-18 1998-08-27 Iro Ab Systeme d'alimentation dosee
WO2002033156A1 (fr) * 2000-10-18 2002-04-25 Iropa Ag Appareil d'alimentation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5316051A (en) * 1991-09-20 1994-05-31 L.G.L. Electronics S.P.A. Self-adjusting thread braking device for weft feeder units
DE10340008A1 (de) * 2003-08-29 2005-03-24 Iropa Ag Messliefergerät

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2222475A1 (de) * 1971-05-06 1973-03-22 Vyzk A Vyv Ustav Zd U Vsheobec Verfahren und einrichtung fuer das abmessen und speichern des kontinuierlich abgemessenen garnes fuer den unterbrochenen schusseintrag bei schuetzenlosen webstuehlen
DE2515818A1 (de) * 1974-04-12 1975-10-23 Zbrojovka Vsetin Np Vorrichtung zum auffangen sowie zur vorratsbildung von abgemessenem schussfaden vor dessen eintrag
FR2428603A1 (fr) * 1978-06-15 1980-01-11 Rueti Te Strake Bv Dispositif pour former une bobine d'alimentation d'un fil fourni par un stock de file
EP0080692A1 (fr) * 1981-11-25 1983-06-08 Kabushiki Kaisha Toyota Chuo Kenkyusho Stockage de trames pour métier à buses d'injection
WO1984001394A1 (fr) * 1982-09-30 1984-04-12 Iro Ab Dispositif de stockage, debitage et mesure de fil
EP0179178A1 (fr) * 1984-10-24 1986-04-30 GebràœDer Sulzer Aktiengesellschaft Procédé et dispositif pour préparer une longueur de trame pour un métier à tisser

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079759A (en) * 1974-08-14 1978-03-21 Zbrojovka Vsetin, Narodni Podnik Apparatus for measuring and adjusting the length of a continuously delivered weft thread
NL7907093A (nl) * 1979-09-24 1981-03-26 Rueti Te Strake Bv Werkwijze voor het weven met een spoelloze weefmachine, alsmede daarbij te gebruike inslagvoorbereidingsinrich- ting.
JPS59144650A (ja) * 1983-02-05 1984-08-18 株式会社豊田自動織機製作所 流体噴射式織機における緯糸測長装置
JPS59163446A (ja) * 1983-03-04 1984-09-14 多川機械株式会社 無ひ織機の緯糸貯留装置
EP0165366A1 (fr) * 1984-06-20 1985-12-27 GebràœDer Sulzer Aktiengesellschaft Dispositif d'alimentation en matériau filiforme pour métiers à tisser
US5609641A (en) * 1995-01-31 1997-03-11 Smith & Nephew Richards Inc. Tibial prosthesis

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2222475A1 (de) * 1971-05-06 1973-03-22 Vyzk A Vyv Ustav Zd U Vsheobec Verfahren und einrichtung fuer das abmessen und speichern des kontinuierlich abgemessenen garnes fuer den unterbrochenen schusseintrag bei schuetzenlosen webstuehlen
DE2515818A1 (de) * 1974-04-12 1975-10-23 Zbrojovka Vsetin Np Vorrichtung zum auffangen sowie zur vorratsbildung von abgemessenem schussfaden vor dessen eintrag
FR2428603A1 (fr) * 1978-06-15 1980-01-11 Rueti Te Strake Bv Dispositif pour former une bobine d'alimentation d'un fil fourni par un stock de file
EP0080692A1 (fr) * 1981-11-25 1983-06-08 Kabushiki Kaisha Toyota Chuo Kenkyusho Stockage de trames pour métier à buses d'injection
WO1984001394A1 (fr) * 1982-09-30 1984-04-12 Iro Ab Dispositif de stockage, debitage et mesure de fil
EP0179178A1 (fr) * 1984-10-24 1986-04-30 GebràœDer Sulzer Aktiengesellschaft Procédé et dispositif pour préparer une longueur de trame pour un métier à tisser

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0624670A1 (fr) * 1987-06-16 1994-11-17 Ichikawa Co.,Ltd. Dispositif de réglage pour un métier à tisser
EP0344100A1 (fr) * 1988-05-20 1989-11-29 GebràœDer Sulzer Aktiengesellschaft Dispositif électromagnétique pour métiers à tisser
US5007464A (en) * 1988-05-20 1991-04-16 Sulzer Brothers Limited Electromagnetic weft brake
WO1993004225A1 (fr) * 1991-08-22 1993-03-04 Iro Ab Fournisseur de mesure
US5462096A (en) * 1991-08-22 1995-10-31 Iro Ab Measuring weft feeder with yarn clamping action
WO1998037265A1 (fr) * 1997-02-18 1998-08-27 Iro Ab Systeme d'alimentation dosee
US6199598B1 (en) 1997-02-18 2001-03-13 Iro Ab Measuring feeding device with brake shoe clamp
CN1077618C (zh) * 1997-02-18 2002-01-09 Iro有限公司 测量喂纱装置
WO2002033156A1 (fr) * 2000-10-18 2002-04-25 Iropa Ag Appareil d'alimentation
US6983771B2 (en) 2000-10-18 2006-01-10 Iropa Ag Feeding device

Also Published As

Publication number Publication date
JPS62299552A (ja) 1987-12-26
US4781225A (en) 1988-11-01
DE3761444D1 (de) 1990-02-22
EP0250359B1 (fr) 1990-01-17

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