EP0022226A1 - Métier à tisser à buses - Google Patents

Métier à tisser à buses Download PDF

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Publication number
EP0022226A1
EP0022226A1 EP19800103639 EP80103639A EP0022226A1 EP 0022226 A1 EP0022226 A1 EP 0022226A1 EP 19800103639 EP19800103639 EP 19800103639 EP 80103639 A EP80103639 A EP 80103639A EP 0022226 A1 EP0022226 A1 EP 0022226A1
Authority
EP
European Patent Office
Prior art keywords
thread
weaving machine
machine according
clamping arm
drawer
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
EP19800103639
Other languages
German (de)
English (en)
Other versions
EP0022226B1 (fr
Inventor
Hubert Peter Van Mullekom
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.)
Rueti Te Strake BV
Original Assignee
Rueti Te Strake BV
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 Rueti Te Strake BV filed Critical Rueti Te Strake BV
Publication of EP0022226A1 publication Critical patent/EP0022226A1/fr
Application granted granted Critical
Publication of EP0022226B1 publication Critical patent/EP0022226B1/fr
Expired 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
    • D03D47/368—Air chamber storage devices
    • 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
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed

Definitions

  • the invention relates to a defenseless weaving machine with a nozzle for inserting a weft thread drawn from a stationary supply of yarn, with a reed carried by a drawer for attaching the inserted weft threads and with a thread clamp arranged between the thread supply and the reed.
  • the invention is intended to eliminate the damage to the weft thread mentioned.
  • the invention is based on the new finding that even when the thread clamp is arranged on the drawer in front of the nozzle, the weft thread is still so tight that it springs back into the nozzle after it has been cut off and can be damaged in the process, this damage thus can go far that knots appear in the weft.
  • the object is achieved according to the invention in that the thread clamp is arranged between the nozzle and the reed.
  • the arrangement of the thread clamp according to the invention prevents the weft thread from jumping back into the nozzle, so that all disturbing factors caused by the springing back are eliminated. This not only leads to greater protection of the weft threads and to an improvement in the fabric quality, but also to an expansion of the field of application of jet weaving machines which was previously not considered possible, since less twisted and smooth yarn can now be used as weft thread.
  • This drawer carries a bar la, on which the reed teeth forming the reed 2 are mounted, which delimit a conveying tunnel in a known manner, through which the weft thread 4 is inserted into the shed.
  • a nozzle 3 with a mixing tube 3a is mounted on the bar 1a, which is fed with blown air in the direction of the arrow X and is arranged in alignment with the said conveying tunnel.
  • the weft thread 4 is drawn off from a stationary yarn package 6 in a known manner by continuously rotating rollers 5.
  • the weft thread supplied by the rollers 5 is fed to a blowing nozzle designated 7, which is directed with its outlet end 7a against the opening 8 of a flattened storage device 10 attached to the weaving machine frame 9 .
  • the storage device 10, whose end (not shown in the drawing) can be connected to a vacuum source, is of a type known per se.
  • the thread forms a loop with an entry leg and an exit leg 4a or 4b.
  • the storage device 10 is continuously supplied with weft thread from the blowing nozzle 7 in the direction of the entry leg 4a and intermittently from the nozzle 3 in the direction of the exit leg 4b, namely with each weft insertion, according to the stored thread length, a certain thread length is removed and entered into the shed.
  • the removed weft thread is fed to the nozzle 3 via a stationary guide eyelet 11.
  • a schematically illustrated cutting device 12 is provided between the thread outlet end of the mixing tube 3a of the nozzle 3 and the thread inlet end of the conveyor tunnel formed by the blade teeth.
  • a thread clamp 13 also shown schematically, is mounted between the thread outlet end of the mixing tube 3a and the adjacent end of the reed 2.
  • the thread clamp 13 has the function of holding the weft thread 4 after completion of the weft insertion and before cutting off the inserted weft thread and releasing it again at the beginning of the next weft insertion.
  • the invention is not limited to the described embodiment.
  • the arrangement of the thread clamp 13 shown could also be advantageous in a weaving machine in which the nozzle 3 is not on the drawer, but is firmly mounted on the machine frame.
  • a further thread clamp in front of the nozzle 3 could be arranged either on the drawer 1, as described in GB-PS 1 550 547, or on the machine frame.
  • FIG. 2 an embodiment of the thread clamp 13 of Fig. 1 is shown.
  • an obliquely upward and rearward facing plate 14 is mounted, which forms the fixed part of the thread clamp 13 and acts as a stop for its movable part .
  • the movable part of the thread clamp 13 consists of a clamping arm 15 formed by a spiral spring, which is fixedly mounted on a pivot shaft 16.
  • the pivot shaft 16 is rotatably mounted on the beam la and is fixedly connected to one end of a first pivot lever 17, the other end of which is pivotally connected to one end of a second pivot lever 18.
  • the other end of the second pivot lever 18 is pivotable about a bearing point which is fixed relative to the machine frame. This bearing point can be formed, for example, by a shaft 19 which is fixedly connected to the machine frame.
  • the thread clamp 13 is designed in such a way that the clamping arm 15 swings over the plate 14 when the sheet stops would, whereby the resilient clamping arm 15 deforms accordingly and its contact pressure against the plate 14 and the weft thread 4 increases steadily.
  • the weft 4 is not clamped abruptly, but softly.
  • the weft is not released suddenly, but gradually. Since the weft thread 4 is held at its tip in front of the thread outlet opening of the mixing tube 3a after cutting, it cannot spring back into it and be damaged or knotted in the process.
  • the thread clamp 13 shown in FIG. 2 is only one of several possible exemplary embodiments.
  • the thread clamp 13 can be designed as an active or a passive element, and in the case of an active element, as in FIG. 2, the clamping arm 15 could also be driven by a curve.
  • a passive element for example, an elastic thread clamp moved with the drawer could be used, such as the clamp described in published NL patent application No. 77 04471, which would also have to be arranged between nozzle 3 and cutting device 12, but close to the latter.
  • a cutting device 12 mounted on the drawer and moved with it it could be designed as a cutting clamping device which on the one hand cuts the weft thread and on the other hand clamps it behind the cutting point in the entry direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP19800103639 1979-07-10 1980-06-27 Métier à tisser à buses Expired EP0022226B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH642279A CH638250A5 (de) 1979-07-10 1979-07-10 Duesenwebmaschine.
CH6422/79 1979-07-10

Publications (2)

Publication Number Publication Date
EP0022226A1 true EP0022226A1 (fr) 1981-01-14
EP0022226B1 EP0022226B1 (fr) 1983-10-12

Family

ID=4309368

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800103639 Expired EP0022226B1 (fr) 1979-07-10 1980-06-27 Métier à tisser à buses

Country Status (4)

Country Link
EP (1) EP0022226B1 (fr)
JP (1) JPS5615443A (fr)
CH (1) CH638250A5 (fr)
DE (1) DE3065275D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2497840A1 (fr) * 1981-01-13 1982-07-16 Rueti Te Strake Bv Metier a tisser sans navette
WO2004029347A1 (fr) * 2002-09-18 2004-04-08 Lindauer Dornier Gesellschaft Mbh Procede de maintien d'un fil de trame ; machine a tisser a tuyeres munie d'un dispositif de serrage pour fil de trame, s'utilisant notamment pour mettre ledit procede en oeuvre et cartouche sous forme d'unite modulaire remplaçable a inserer dans le tube melangeur d'une machine a tisser a tuyeres
CN106592069A (zh) * 2016-12-30 2017-04-26 吴江市兴业纺织有限公司 一种喷气织机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5942442B2 (ja) * 1974-01-24 1984-10-15 富士写真フイルム株式会社 磁性体の製造法
DE112015006992T5 (de) 2015-10-01 2018-07-05 Mitsubishi Electric Corporation Dreiphasen-Induktionsmotor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1088749A (en) * 1965-12-03 1967-10-25 Hosokawa Kigyo Kabushiki Kaish Improvements in or relating to shuttleless looms
CH520802A (de) * 1970-05-26 1972-03-31 Fothergill & Harvey Ltd Verfahren zum Abtrennen der Schussfäden eines Gewebes, das gerade gewoben wird
DE2341234A1 (de) * 1972-08-16 1974-02-28 Rueti Te Strake Bv Webmaschine
DE2737197A1 (de) * 1976-08-24 1978-03-09 Vyzk Vyvojovy Ustav Vseobe Verfahren zum schussfadenlenken, insbesondere bei duesenwebmaschinen, die mit einer mischvorrichtung ausgestattet sind, sowie vorrichtung zum durchfuehren dieses verfahrens
NL7704471A (en) * 1977-04-22 1978-10-24 Rueti Te Strake Bv Weft thread clamp for selvedge in shuttleless loom - prevents loosening of threads and assists temples to maintain width
GB1550547A (en) * 1976-10-21 1979-08-15 Rueti Te Strake Bv Shuttleless loom

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1088749A (en) * 1965-12-03 1967-10-25 Hosokawa Kigyo Kabushiki Kaish Improvements in or relating to shuttleless looms
CH520802A (de) * 1970-05-26 1972-03-31 Fothergill & Harvey Ltd Verfahren zum Abtrennen der Schussfäden eines Gewebes, das gerade gewoben wird
DE2341234A1 (de) * 1972-08-16 1974-02-28 Rueti Te Strake Bv Webmaschine
DE2737197A1 (de) * 1976-08-24 1978-03-09 Vyzk Vyvojovy Ustav Vseobe Verfahren zum schussfadenlenken, insbesondere bei duesenwebmaschinen, die mit einer mischvorrichtung ausgestattet sind, sowie vorrichtung zum durchfuehren dieses verfahrens
GB1550547A (en) * 1976-10-21 1979-08-15 Rueti Te Strake Bv Shuttleless loom
NL7704471A (en) * 1977-04-22 1978-10-24 Rueti Te Strake Bv Weft thread clamp for selvedge in shuttleless loom - prevents loosening of threads and assists temples to maintain width

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2497840A1 (fr) * 1981-01-13 1982-07-16 Rueti Te Strake Bv Metier a tisser sans navette
WO2004029347A1 (fr) * 2002-09-18 2004-04-08 Lindauer Dornier Gesellschaft Mbh Procede de maintien d'un fil de trame ; machine a tisser a tuyeres munie d'un dispositif de serrage pour fil de trame, s'utilisant notamment pour mettre ledit procede en oeuvre et cartouche sous forme d'unite modulaire remplaçable a inserer dans le tube melangeur d'une machine a tisser a tuyeres
CN106592069A (zh) * 2016-12-30 2017-04-26 吴江市兴业纺织有限公司 一种喷气织机
CN106592069B (zh) * 2016-12-30 2018-07-06 吴江市兴业纺织有限公司 一种喷气织机

Also Published As

Publication number Publication date
DE3065275D1 (en) 1983-11-17
EP0022226B1 (fr) 1983-10-12
CH638250A5 (de) 1983-09-15
JPS5615443A (en) 1981-02-14

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