EP0101492B1 - Schussfadenführungskanal - Google Patents

Schussfadenführungskanal Download PDF

Info

Publication number
EP0101492B1
EP0101492B1 EP83900797A EP83900797A EP0101492B1 EP 0101492 B1 EP0101492 B1 EP 0101492B1 EP 83900797 A EP83900797 A EP 83900797A EP 83900797 A EP83900797 A EP 83900797A EP 0101492 B1 EP0101492 B1 EP 0101492B1
Authority
EP
European Patent Office
Prior art keywords
weft yarn
weft
teeth
mouth
guide
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.)
Expired
Application number
EP83900797A
Other languages
English (en)
French (fr)
Other versions
EP0101492A1 (de
Inventor
John Dalton Bonas Machine Comp. Ltd. Griffith
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
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 Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Publication of EP0101492A1 publication Critical patent/EP0101492A1/de
Application granted granted Critical
Publication of EP0101492B1 publication Critical patent/EP0101492B1/de
Expired 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
    • D03D47/28—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
    • D03D47/30—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 by gas jet
    • D03D47/3026—Air supply systems
    • D03D47/3053—Arrangements or lay out of air supply systems
    • 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
    • D03D47/30—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 by gas jet
    • D03D47/3006—Construction of the nozzles
    • D03D47/302—Auxiliary nozzles
    • 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
    • D03D47/30—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 by gas jet
    • D03D47/3026—Air supply systems
    • D03D47/3033—Controlling the air supply
    • D03D47/304—Controlling of the air supply to the auxiliary nozzles

Definitions

  • the present invention relates to a weft yarn insertion channel for use in a fluid jet weaving loom.
  • the guide teeth have to perform two main functions viz., (1) they have to guide the air flow along the channel so as to carry the weft yarn therealong without it jumping out of the channel and (2) they have to permit easy exit of the inserted weft yarn on beat-up in the weaving cycle.
  • U.S. Patent 3742973 and French Patent 2370811 both provide guide teeth having continuously bounded insertion openings wherein the exit mouth is covered by a resilient lip.
  • a main disadvantage with such a construction is difficulty of manufacture due to the provision of the resilient tip.
  • French Patent 1452576 and U.K. Patent 2072719 provide alternative constructions of guide teeth for providing a weft insertion channel which during the insertion cycle provides a continuously bounded channel and which on beat up define exit mouth openings through which the weft yarn can escape.
  • a guide tooth for a weft insertion channel the guide tooth in cross-section defining a continuously bounded opening for weft yarn insertion, the guide tooth including a weft yarn exit mouth which is closed during weft insertion and which permits the weft yarn to pass therethrough on beat-up
  • the guide tooth includes two arms which are joined together by a resilient connection which defines a hinged connection and are shaped to define said continuously bounded opening, the arms being movable about the hinged connection to open and close said exit mouth.
  • the guide tooth may be constructed so that the weft yarn opens the exit mouth during beat-up or may be constructed so that the mouth is opened after weft yarn insertion to provide a gap through which the yarn passes on beat-up.
  • each guide tooth is a one piece plastics moulding comprising a pair of arms which are hingedly connected together.
  • a weft yarn insertion channel comprising a plurality of guide teeth as defined above, the guide teeth being arranged in groups of teeth so that the channel is defined by a plurality of side by side groups of said teeth, the teeth in each group being connected so as to move in unison for opening/closing of the weft yarn exit mouth.
  • the groups of teeth are arranged so that the weft yarn exit mouths are normally open, actuation means being provided to act on successive groups to close the weft yarn exit mouths of teeth in each group as the leading end of the weft yarn passes therethrough during insertion.
  • the weft insertion channel 10 is composed of individual guide teeth 11 secured to the base of the reed 12 so as to be in front of the reed. Each tooth 11 is arranged in abutting relationship with a neighbouring tooth so that collectively they form a channel extending across the warp sheet. Each tooth 11 is preferably formed in one piece from a plastics material and is conveniently injection moulded. Each tooth 11 has a pair of arms 14, 15 which are connected via a web 16. The web 16 provides a flexible connection between arms 14, 15 so as to define a hinge. The upper portions 14a, 15a of arms 14 and 15 are shaped so as to define together with web 16 an opening 18 through which compressed air is directed for carrying weft yarn across the warp shed.
  • the upper portions 14a, 15a have terminal end faces 14b, 15b respectively which abut against one another but which on separation define a gap therebetween through which the weft yarn can exit during beat-up.
  • the arms 14, 15 have lower portions 14c, 15c respectively which extend downwardly below web 16.
  • Lower portions 14c and 15c each have a widened portion 14d, 15d respectively which abut against similar portions on neighbouring teeth and thereby serve to space the upper portions of the teeth from one another.
  • each portion 14d, 15d has projections and recesses for co-operation with recesses and projections on the neighbouring tooth so as to accurately position individual teeth relative to one another. Portions 14d are clamped to the base of reed 12 and portions 15d are freely mounted.
  • portions 15d interact with one another they move in unison and restrain lateral twisting movements between arms 14, 15 of individual teeth.
  • portions 14d, 15d are provided with apertures 14e, 15e through which stiff rods e.g. made of steel pass in order to secure adjacent teeth together.
  • teeth 11 are arranged in groups 25 so that all arms 15 of teeth 11 in one group move in unison independently of the arms 15 of teeth 11 in other groups. Accordingly the portions 15d of terminal teeth in each group slidingly abut the neighbouring portion 15d ofthe teeth in the neighbouring group.
  • the terminal end faces 14b, 15b are normally spaced apart and so biasing means 26 are provided to operate on each group 25 to bias faces 14b, 15b into contact.
  • the biasing means may be arranged to provide a permanent bias which is sufficient to overcome the inherent bias in web 16 and so maintain faces 14b, 15b in contact but which permit the weft yarn to part the faces 14b, 15b to exit from the teeth on beat-up.
  • 15b inclined faces may be provided to create a lead-in for the weft yarn.
  • the biasing means 26' may be arranged to provide a variation in the biasing force dependent on the cycle of the weaving loom.
  • the biasing means 26' may be arranged to provide a greater bias during weft insertion and a smaller predetermined bias during beat-up, the smaller predetermined bias being such as to maintain contact between faces 14b, 15b but permit the weft yarn to part the faces 14b, 15b to exit from teeth 11.
  • the biasing means may be arranged to provide a biasing force during weft insertion only so that at other times the abutting faces 14b, 15b are allowed to part to provide an open mouth for exit of the inserted weft yarn.
  • the biasing means 26' for each group are mounted on a cam follower 40 which actuates auxiliary air nozzles associated with each group 25 of guide teeth.
  • cam followers 40 are actuated in succession from left to right in Figure 3to provide an auxiliary blast of airto carry the leading end of the weft yarn through a particular group 25 of teeth.
  • the cam follower 40 moves the biasing means 26'to move arms 15 to bring faces 14b, 15b into contact for that particular group of teeth.
  • cam follower 40 After the leading end oftheweftyarn has passed through the particular group the cam follower 40 is moved to close-off supply of air to that particular group and so simultaneously permits faces 14b and 15b to part. Accordingly, after weft insertion has been completed, faces 146,156 on all teeth are spaced apart ready for easy exit of the weft yarn during beat-up.
  • the biasing means 26' may be mounted on the reed shaft 50 for movement therewith so that when the reed shaft moves away from its beat-up position the biasing means 26' are operated to close the weft yarn exit gap in readiness for insertion of the weft yarn.
  • the biasing means 26' illustrated in Figure 7 basically comprises an elongate resilient member 60, preferably in the form of a leaf spring, which at one end co-operates with arms 15 of a respective group of teeth and co-operates at its other end with an adjustable stop 61 which is slidably mounted on the loom frame.
  • the member 60 is secured to the reed shaft 50 via a further resilient member 64.
  • Resilient member 64 is preferably also a leaf spring which is secured at one end to the reed shaft 50 and at the other end to resilient member 60.

Landscapes

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

Claims (10)

1. Ein Führungszahn für einen Schußeintragkanal, welcher Führungszahn im Querschnitt eine kontinuierlich begrenzte Öffnung für den Schußgarneintrag begrenzt, welcher Führungszahn eine Schußgarnaustrittsmündung aufweist, die während des Schußeintrags geschlossen ist und den Durchtritt des Schußgarnes beim Anschlag ermöglicht, dadurch gekennzeichnet, daß der Führungszahn zwei Arme (14, 15) umfaßt, die durch eine federnde Verbindung (16) miteinander verbunden sind, welche eine gelenkige Verbindung bildet, und die so geformt sind, daß sie die genannte kontinuierlich begrenzte Öffnung definieren, welche Arme um die gelenkige Verbindung beweglich sind zum Öffnen und Schließen der genannten Austrittsmündung.
2. Führungszahn nach Anspruch 1, bei dem die Arme (14, 15) und die federnde Verbindung (16) einstückig ausgebildet sind.
3. Führungszahn nach Anspruch 1 oder 2, bei dem die federnde Verbindung die Arme in Abspreizrichtung vorspannt zum Bilden der genannten Mündung.
4. Ein Schußeintragkanal, umfassend eine Mehrzahl von Führungszähnen nach Anspruch 3 und Vorspannmittel (26) für das Schließen der genannten Mündung.
5. Schußeintragskanal nach Anspruch 4, bei dem die Vorspannmittel eine konstante Vorspannung zum Schließen der genannten Mündung aufbringen, welche Vorspannung geringfügig größer ist als die Vorspannung der genannten federnden Verbindung.
6. Schußeintragskanal nach Anspruch 4, bei dem die genannten Vorspannmittel eine intermittierende Vorspannung aufbringen zum Schließen der genannten Mündung für den Schußeintrag und für die Ermöglichung der Mündungsöffnung unter der Vorspannung der genannten federnden Verbindung während des Anschlags.
7. Schußeintragskanal nach Anspruch 4, 5 oder 6, bei dem die Führungszähne in Gruppen (25) von Zähnen angeordnet sind, wobei auf jede Gruppe von jeweils zugeordneten Vorspannmitteln eingewirkt wird.
8. Schußeintragskanal nach Anspruch 7, bei dem die Gruppen von Zähnen so angeordnet sind, daß die Schußgarnaustrittsmündung normalerweise offen ist, wobei Betätigungsmittel (40) vorgesehen sind zum Einwirken auf aufeinanderfolgende Gruppen zum Schließen der Schußgarnaustrittsmündungen der Zähne in jeder Gruppe, wenn das führende Ende des Schußgarns beim Eintrag hindurchpassiert.
9. Ein Webstuhl mit einer Mehrzahl von Führungszähnen nach einem der Ansprüche 1 bis 3.
10. Ein Webstuhl mit einem Schußeintragskanal nach einem der Ansprüche 4 bis 8.
EP83900797A 1982-02-19 1983-02-16 Schussfadenführungskanal Expired EP0101492B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8204881 1982-02-19
GB8204881 1982-02-19

Publications (2)

Publication Number Publication Date
EP0101492A1 EP0101492A1 (de) 1984-02-29
EP0101492B1 true EP0101492B1 (de) 1986-05-28

Family

ID=10528445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83900797A Expired EP0101492B1 (de) 1982-02-19 1983-02-16 Schussfadenführungskanal

Country Status (5)

Country Link
EP (1) EP0101492B1 (de)
JP (1) JPS59500226A (de)
DE (1) DE3363652D1 (de)
IT (1) IT1161008B (de)
WO (1) WO1983002965A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104153102A (zh) * 2014-07-22 2014-11-19 扬中市金德纺织机械设备厂 毛巾织机打纬总成

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1452576A (fr) * 1965-10-15 1966-02-25 Sp K Bureau Proekt Tkatskogo O Dispositif de guidage de fil de trame dans la foule de chaîne de métiers de tissage pneumatiques
CH547368A (de) * 1972-02-08 1974-03-29 Vyzk Vyvojovy Ustav Vseobe Lamelle eines anschlag- und fuehrungskammes fuer eine pneumatische duesenwebmaschine.
JPS5361758A (en) * 1976-11-12 1978-06-02 Nissan Motor Guiding piece for air jet loom
CH645418A5 (de) * 1980-03-27 1984-09-28 Rueti Ag Maschf Einrichtung zur fuehrung eines mittels eines stroemenden fluidums angetriebenen schussfadens im webfach einer webmaschine.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104153102A (zh) * 2014-07-22 2014-11-19 扬中市金德纺织机械设备厂 毛巾织机打纬总成

Also Published As

Publication number Publication date
IT8319640A0 (it) 1983-02-17
EP0101492A1 (de) 1984-02-29
IT1161008B (it) 1987-03-11
DE3363652D1 (en) 1986-07-03
WO1983002965A1 (en) 1983-09-01
JPS59500226A (ja) 1984-02-16

Similar Documents

Publication Publication Date Title
US4492255A (en) Apparatus for guiding a fluid medium driven weft thread in the shed of a weaving machine and use of the apparatus at a multiple longitudinal traversing shed weaving machine
CS275470B2 (en) Means for guide of weft's inserting grippers' reversely moving couples inside loom's shed
TW340881B (en) A device for controlling warp threads for the production of gauze fabrics on a textile machine
CS219281B2 (en) Ray for the jet loom
US4905741A (en) Weft thread inserting device for pneumatic looms
US4031926A (en) Loom with means for introducing the filling threads by means of a fluid
GB1532426A (en) Triaxial fabric loom
US4570683A (en) Yarn holding device
EP0101492B1 (de) Schussfadenführungskanal
US3796236A (en) Weft thread inserting means
US3065770A (en) Method of closing detector combs of jet weaving looms
US20130153080A1 (en) Reed and Weaving Machine for Weaving Pattern Formation in Woven Fabrics with Additional Pattern Effects
US4432399A (en) Filling-thread monitoring device for jet looms
CS209550B2 (en) Auxiliary weft carrier for the shuttleless loom with pneumatic picking
DE602004005171D1 (de) Nadelwebmaschine mit automatischem Wechsel des Schussfadens
US1943012A (en) Weft-shoot-changing device for gripper looms
JPH1136159A (ja) レピア織機における緯入れ装置
JPS6054417B2 (ja) ヘルド開口装置を備えた三軸織機
US3203452A (en) Weft confining comb for pneumatic looms
EP0077787B1 (de) Webmaschine
DE3468706D1 (en) Device for making leno shed in looms
US4529015A (en) Device designed to help the insertion of a weft yarn in a weaving loom
CS198275B2 (en) Air guide comb lamella for pneumatic jet looms
US6161597A (en) Gripper weaving machine
US3280852A (en) Apparatus for forming selvedges containing turning threads

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

17P Request for examination filed

Effective date: 19831004

AK Designated contracting states

Designated state(s): BE CH DE FR GB LI NL

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SULZER BROTHERS LIMITED

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE FR GB LI NL

REF Corresponds to:

Ref document number: 3363652

Country of ref document: DE

Date of ref document: 19860703

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19870228

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19880901

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19881122

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19890228

Ref country code: CH

Effective date: 19890228

Ref country code: BE

Effective date: 19890228

BERE Be: lapsed

Owner name: SULZER BROTHERS LTD

Effective date: 19890228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19891027

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19891101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST