EP0318763A2 - Verfahren zum Spleissen von Kettfäden für Webvorgänge und Vorrichtung zur Verwendung des Verfahrens - Google Patents

Verfahren zum Spleissen von Kettfäden für Webvorgänge und Vorrichtung zur Verwendung des Verfahrens Download PDF

Info

Publication number
EP0318763A2
EP0318763A2 EP88119111A EP88119111A EP0318763A2 EP 0318763 A2 EP0318763 A2 EP 0318763A2 EP 88119111 A EP88119111 A EP 88119111A EP 88119111 A EP88119111 A EP 88119111A EP 0318763 A2 EP0318763 A2 EP 0318763A2
Authority
EP
European Patent Office
Prior art keywords
yarns
splice
splicer
unit
spliced
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Withdrawn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
EP88119111A
Other languages
English (en)
French (fr)
Other versions
EP0318763A3 (de
Inventor
Roberto Meroni
Danny Lant
Fabio Lancerotto
Umberto Gerin
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.)
TESSITURA MONTI SpA
Original Assignee
TESSITURA MONTI 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 TESSITURA MONTI SpA filed Critical TESSITURA MONTI SpA
Publication of EP0318763A2 publication Critical patent/EP0318763A2/de
Publication of EP0318763A3 publication Critical patent/EP0318763A3/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D03J1/16—Apparatus for joining warp ends
    • D03J1/18—Apparatus for joining warp ends for joining, e.g. tying, a complete series of fresh warp threads to the used warp threads

Definitions

  • This invention concerns a process to splice warp yarns for weaving operations. To be more exact, the invention concerns a process which arranges to connect the warp yarns of two weaving beams by means of splices produced with splicer-type systems.
  • the invention is employed in the step before the weaving where it is necessary to produce in succession on a loom pieces in which the warp consists of the same number of yarns.
  • a further object of the invention is a device that employs such a process.
  • the state of the art comprises processes and devices suitable to connect warp yarns on different beams.
  • a beam is readied which contains the greatest possible quantity of warps, thus ensuring a continuity of unwinding on the loom by means of the connection of the yarns of one warp to the yarns of the next warp.
  • connection is made on appropriate machines by knotting each single yarn of one warp to the corresponding yarn of the next warp.
  • the knots thus made involve substantially two drawbacks.
  • the first drawback consists of the fact that the tail ends of the knots thus made are too long and entail problems in the feed of the warp on the loom and in the finished product.
  • the operator of the knotting machine has to take steps to cut the tail ends by hand in many cases.
  • the second drawback is that the knots are of a great size and lead to problems in the passage of the yarns in the slashers and in the looms.
  • the present applicant has studied, tested and obtained a process and a device able to overcome all the problems of the state of the art.
  • the invention arranges to carry out the connection between the yarns of successive warps by means of a splice made with a system known as a "splicer" and no longer by means of knotting.
  • a splice of this type does not contain tail ends, nor does it increase the diametric dimension of the yarn substantially in the zone where it is produced.
  • the dynamometric properties of the spliced yarn are such as not to cause any problems in the weaving process.
  • the splice is made at the ends of the yarns to be connected by means of an air system, which produced the connection of the yarns by interlacing the fibres of one end with the fibres of the other end.
  • the two yarns to be spliced come from their respective beams and are positioned suitably on support frames cooperating with the splicer device; they are selected beforehand and are then located on a gripper unit, the excess portions of each yarn not involved in the splice being sheared.
  • the gripper unit then transfers separately the yarns to be spliced in correspondence with means that aspirate the ends of the yarns in the neighbourhood of a splicer unit.
  • a positioner means arranges to insert the ends of the yarns in the splicer unit in correspondence with a splicing chamber; the splicer unit is actuated by its own motor and performs the splicing cycle.
  • the segments of yarn in the aspiration means do not form part of the splice and, after being sheared, are removed in appropriate containers.
  • the splice thus made is withdrawn from the splicer unit by an extractor, which takes it to a waiting position beside the yarns spliced earlier.
  • the splice is performed by a splicer unit of a mechanical type which does not employ air but works on the ends of the yarn with mechanical means so as to twist the ends of the yarns about each other.
  • the resulting splice possesses better dynamometric proper­ties and a better appearance than the splices produced by the use of air.
  • the invention is also embodied with a device that employs the above process according to the characterization of Claim 5.
  • the diagram of Fig.1 references with 10 a device to splice warps for weaving operations.
  • the device comprises a selector unit 11 which arranges to select a yarn 12 of the first warp and a yarn 13 of the second warp from the plurality of yarns of the respective warps.
  • the gripper unit 14 positions the yarns 12-13 in correspond­ence with two aspiration intakes, 15 and 16 respectively, which are positioned one above the other in the neighbourhood of a splicer unit 17 of a splicer type.
  • the segments of the yarns 12-13 connected to the respective beams are positioned suitably at 18 in relation to the splicer unit 17.
  • the splicer unit 17 is equipped with its own motor 19 so as to carry out the splicing cycle.
  • a positioner means 20 consisting of two levers 21 and 22 reciprocally pivoted at 23 cooperates with the splicer unit 17.
  • levers 21-22 have their end portions shaped as hooks 121 and 122 respectively so as to cooperate with the yarns 12-13 positioned near a taker-in means 24 of the splicer unit 17.
  • the positioner means 20 is capable of straight alternating motion in the direction of the axis 25, whereas the levers 21-22 are capable of oscillatory motion about the pivot 23.
  • Fig.2 the positioner means 20 is in the position of maximum outward movement of the splicer unit 17, whereas the levers 21-22 are in the position of maximum opening.
  • Fig.3 the levers 21-22 are shown in their maximum closure position corresponding to cooperation of the terminal hooks 121-122 respectively with the yarns 12-13.
  • Fig.3 shows partially also the aspiration intakes 15-16 which retain the yarns 12-13 now released by the gripper unit 14.
  • Fig.4 the positioner means 20 retreats so as to bring, in cooperation with the taker-in means 24, the yarns 12-13 to the position corresponding to the actual splicing step.
  • the segments of the yarns 12-13 positioned between the splicer chamber of the splicer unit 17 and the aspiration intakes 15-16 are discharged by the aspiration intakes 15-16 when the splice has been made.
  • the cycle is repeated in an analogous manner thereafter for the plurality of yarns 12-13 included in the respective warps to be woven.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
EP88119111A 1987-12-01 1988-11-17 Verfahren zum Spleissen von Kettfäden für Webvorgänge und Vorrichtung zur Verwendung des Verfahrens Withdrawn EP0318763A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT83502/87A IT1220136B (it) 1987-12-01 1987-12-01 Processo di giunzione di catene di tessitura e dispositivo adottante il processo
IT8350287 1987-12-01

Publications (2)

Publication Number Publication Date
EP0318763A2 true EP0318763A2 (de) 1989-06-07
EP0318763A3 EP0318763A3 (de) 1990-05-30

Family

ID=11322655

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88119111A Withdrawn EP0318763A3 (de) 1987-12-01 1988-11-17 Verfahren zum Spleissen von Kettfäden für Webvorgänge und Vorrichtung zur Verwendung des Verfahrens

Country Status (2)

Country Link
EP (1) EP0318763A3 (de)
IT (1) IT1220136B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109576877A (zh) * 2018-11-27 2019-04-05 武汉裕大华纺织有限公司 两种或两种以上经纱结经的操作方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR16964E (fr) * 1913-05-26 Max Wenzel Procédé pour rattacher les bouts des fils de chaine et appareil pour son exécution
US1408705A (en) * 1915-10-07 1922-03-07 Shawmut Eng Co Machine for splicing threads
US2081262A (en) * 1936-07-23 1937-05-25 Warp Twisting In Machine Compa Warp twisting-in machine
CH383289A (de) * 1959-11-21 1964-10-15 Benninger Ag Maschf Verfahren zum knotenlosen Verbinden der einzelnen Fäden zweier Kettfadenscharen
IT8323191U1 (it) * 1983-10-07 1985-04-07 Mesdan Spa Apparecchio per la giunzione, mediante aria compressa, di filati tessili e per la preventiva preparazione dell'estremita' dei filati da congiungere, particolarmente per l'installazione su roccatrici e simili

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109576877A (zh) * 2018-11-27 2019-04-05 武汉裕大华纺织有限公司 两种或两种以上经纱结经的操作方法

Also Published As

Publication number Publication date
EP0318763A3 (de) 1990-05-30
IT8783502A0 (it) 1987-12-01
IT1220136B (it) 1990-06-06

Similar Documents

Publication Publication Date Title
US4143684A (en) Process and apparatus for reed-beating and cutting off fillings inserted into the shed in shuttleless weaving machinery equipped with weft mixers
EP0461524B1 (de) Schussfadenzubringvorrichtung für Greiferwebmaschinen
US4592393A (en) Weft thread preparation device
EP0318763A2 (de) Verfahren zum Spleissen von Kettfäden für Webvorgänge und Vorrichtung zur Verwendung des Verfahrens
US4078586A (en) Method and apparatus for producing a selvage
CA2234464C (en) Weaving machine with pneumatic weft thread insertion
CN1036212C (zh) 自动改变织机中梭口顶点位置的改进装置
CN109208158B (zh) 在片梭织机中不使用假边的纬纱操作装置
EP0832998B1 (de) Vorrichtung zum schnellen Einbringen von Faden in die Kanäle von mit einem Faden nach Fadensystem arbeitende Zettelmaschine
GB2117419A (en) Apparatus for the separation and preparing of warp threads for the drawing in of warp threads in healds and dents
US3083738A (en) Forming a selvage on a fabric by bending projecting weft thread ends into the shed while the fabric is woven
KR890000710A (ko) 복형직기용 자동실톳 교환장치
EP4488431A1 (de) Schärmaschine mit spule mit unabhängig motorisiertem leasing
US6223779B1 (en) Auxiliary selvage forming and weft thread cutting device
US3175588A (en) Filling tail removal equipment
CN111058163A (zh) 自动穿综设备
CN212582105U (zh) 一种提纱装置
CN111621911B (zh) 一种自动穿经机的电控系统的控制方法
US2681666A (en) Loom having automatic bobbinchanging mechanism
EP0999299A2 (de) Verfahren und Vorrichtung zum Wechseln von Garnkonen zum Führen des Garnes an einer Textilmaschine
US4821779A (en) Method and apparatus for releasing defectively inserted weft threads in weaving machines
US3608589A (en) Automatic pirn changer for a loom
JPS5950767B2 (ja) 整経機
CN111621910A (zh) 一种提纱装置
JP7224416B2 (ja) 経糸の整経方法及び部分整経機

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

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB GR LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB GR LI LU NL SE

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19901201