EP2589691A1 - Dispositif d'alimentation en fil pour métiers à tricoter circulaires - Google Patents

Dispositif d'alimentation en fil pour métiers à tricoter circulaires Download PDF

Info

Publication number
EP2589691A1
EP2589691A1 EP11187908.6A EP11187908A EP2589691A1 EP 2589691 A1 EP2589691 A1 EP 2589691A1 EP 11187908 A EP11187908 A EP 11187908A EP 2589691 A1 EP2589691 A1 EP 2589691A1
Authority
EP
European Patent Office
Prior art keywords
yarn
yarn feeding
guiding
transmission shaft
guiding unit
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Withdrawn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
EP11187908.6A
Other languages
German (de)
English (en)
Inventor
Shih-Chi Chen
Jenq-Huey Shyu
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.)
Pai Lung Machinery Mill Co Ltd
Original Assignee
Pai Lung Machinery Mill Co Ltd
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 Pai Lung Machinery Mill Co Ltd filed Critical Pai Lung Machinery Mill Co Ltd
Priority to EP11187908.6A priority Critical patent/EP2589691A1/fr
Publication of EP2589691A1 publication Critical patent/EP2589691A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/48—Thread-feeding devices

Definitions

  • the present invention relates to a yarn feeding apparatus for circular knitting machines and particularly to a yarn feeding apparatus for color-changing yarn feeding wheels of circular knitting machines.
  • Yarn feeding apparatus equipped with a yarn feeding wheel plays an intermediary role between a circular knitting machine and a yarn barrel. It mainly provides a smooth yarn supply path during knitting operation of the circular knitting machine and maintains a desired tensile strength of yarns. If the tensile strength of the yarns is too strong the yarns are easily broken. Too small tensile strength will result in unsmooth yarn supply. In order for single circular knitting machine to knit complex patterns, a great number of yarn feeding wheels are needed to supply yarns.
  • a conventional yarn feeding apparatus such as R.O.C. patent No. I326725 basically includes a yarn feeding body, a yarn feeding board coupled with the yarn feeding body and a transmission shaft driven by the yarn feeding body.
  • the transmission shaft is fixedly coupled with at least one yarn feeding wheel.
  • the yarn feeding board has at least one yarn inlet and at least one yarn outlet, and also has at least one guiding unit. After the yarn passes through the yarn inlet, it threads through a yarn guiding eyelet at a distal end of the guiding unit, and then passes through the yarn outlet to be sent to the knitting machine for knitting.
  • the guiding unit is drawn by the yarn to move reciprocally on a motion track between a yarn supply position and a yarn supply stopped position.
  • the yarn guiding surface made of plastic material still receives constant friction of the yarn and results in unnecessary wear.
  • the primary object of the present invention is to solve the problem of the conventional technique with the yarn feeding wheel constantly driven by the transmission shaft to rotate even when the yarn is stopped supplying that results in excessive wear.
  • the present invention provides a yarn feeding apparatus for circular knitting machines that includes a yarn feeding body and a transmission shaft driven by the yarn feeding body.
  • the yarn feeding body includes at least one guiding unit which is drawn by a yarn to turn and move reciprocally on a motion track relative to the transmission shaft between a yarn supply position and a yarn supply stopped position.
  • the invention is further characterized in that the transmission shaft is movably coupled with at least one yarn feeding wheel freely rotating against the transmission shaft, and also coupled with at least one transmission mechanism driven by the transmission shaft.
  • the yarn feeding wheel has at least one wedge member corresponding to the transmission mechanism. The wedge member has a first position to separate from the transmission mechanism and a second position pushed by the guiding unit on the motion track to couple with the transmission mechanism to drive the yarn feeding wheel to rotate synchronously with the transmission shaft.
  • the wedge member has a wedge portion to wedge in the transmission mechanism and an action strut pushed by the guiding unit.
  • the guiding unit has a pressing section to push the action strut.
  • the action strut has a drawing surface drawn by the pressing section to move the wedge member to the second position.
  • the guiding unit has a pushing section to push the action strut and the action strut has a butting surface butted by the pushing section to move the wedge member to the first position.
  • the transmission mechanism includes a plurality of ratchets and the wedge portion is a detent corresponding to the ratchets.
  • the yarn feeding body further includes a friction plate in contact with the yarn feeding wheel regularly.
  • the yarn feeding wheel has a mounting surface hinged by the wedge member, a cover plate to cover the mounting surface and a gap between the cover plate and mounting surface to receive entry of the guiding unit.
  • the yarn feeding wheel has at least one yarn guiding surface
  • the guiding unit has at least one yarn guiding ring corresponding to the yarn guiding surface to allow the yarn to thread through and guide the yarn to contact the yarn guiding surface.
  • the yarn feeding wheel includes a first yarn guiding surface and a second yarn guiding surface
  • the guiding unit has a first yarn guiding ring corresponding to the first yarn guiding surface to allow the yarn to thread through and guide the yarn to contact the first yarn guiding surface
  • the yarn feeding body includes an ancillary guiding unit which has a second yarn guiding ring corresponding to the second yarn guiding surface to allow the yarn to thread through and guide the yarn to contact the second yarn guiding surface.
  • the invention through the guiding unit moving on the motion track to drive the wedge member hinged on the yarn feeding wheel to move against the transmission mechanism, the transmission shaft and yarn feeding wheel can be fully coupled and separated.
  • the problem that the yarn feeding wheel is constantly contacted by the yarn to result in wear even when the yarn is stopped supplying can be eliminated.
  • the yarn feeding apparatus includes a yarn feeding body 10 and a transmission shaft 20 driven by the yarn feeding body 10.
  • the yarn feeding body 10 includes a yarn feeding board 11 which is coupled with a guiding unit 30 and an ancillary guiding unit 31.
  • the transmission shaft 20 is movably coupled with at least one yarn feeding wheel 40 freely rotating against the transmission shaft 20.
  • the yarn feeding wheel 40 includes a first yarn guiding surface 43 and a second yarn guiding surface 44.
  • the yarn feeding board 11 includes a plurality of yarn inlets 111 and yarn outlets 112 threaded through by a plurality of yarns 50 (also referring to FIG. 5 ).
  • the guiding unit 30 has a first yarn guiding ring 303 corresponding to the first yarn guiding surface 43 to allow the yarn 50 to thread through and guide the yarn 50 to contact the first yarn guiding surface 43.
  • the ancillary guiding unit 31 has a second yarn guiding ring 311 corresponding to the second yarn guiding surface 44 to allow the yarn 50 to thread through and guide the yarn 50 to contact the second yarn guiding surface 44.
  • the yarn 50 draws the first yarn guiding ring 303 and second yarn guiding ring 311 so that the guiding unit 30 and ancillary guiding unit 31 turn and move reciprocally on a motion track relative to the transmission shaft 20 between a yarn supply position and a yarn supply stopped position.
  • the transmission shaft 20 is coupled with a transmission mechanism 21 driven by the transmission shaft 20.
  • the transmission mechanism 21 includes a plurality of ratchets 211.
  • the yarn feeding wheel 40 has a mounting surface 41 adjacent to the transmission mechanism 21.
  • the mounting surface 41 is hinged by at least one wedge member 42 corresponding to the transmission mechanism 21.
  • the wedge member 42 has a wedge portion 421 to wedge in the transmission mechanism 21 and an action strut 422 pushed by the guiding unit 30. More specifically, the wedge portion 421 can be a detent corresponding to the ratchets 211 to form wedging therewith.
  • the guiding unit 30 has a pressing section 301 to contact the action strut 422 and a pushing section 302 (also referring to FIG. 4 ).
  • the action strut 422 has a drawing surface 423 drawn by the pressing section 301, and a butting surface 424 butted by the pushing section 302.
  • the yarn feeding wheel 40 further includes a cover plate 45 to cover the mounting surface 41. The cover plate 45 and mounting surface 41 are interposed by a gap 46 to receive the guiding unit 30.
  • FIGS. 4A and 4B Please refer to FIGS. 4A and 4B for an embodiment of the invention in operating conditions.
  • the wedge member 42 is located at a first position without wedging in the transmission mechanism 21, and the transmission shaft 20 rotates idly against the yarn feeding wheel 40.
  • the guiding unit 30 is drawn by the yarns 50 to move to the yarn supply stopped position, the guiding unit 30 is moved along the motion track and drives the drawing surface 423 via the pressing section 301 towards the transmission shaft 20, and the wedge portion 421 is coupled with the transmission mechanism 21 as shown in FIG. 4A .
  • the wedge member 42 is located at a second position to wedge in the transmission mechanism 21 to drive the yarn feeding wheel 40 to rotate synchronously with the transmission shaft 20; next, the ancillary guiding unit 31 (referring to FIG. 2 ) is drawn by another yarn 50 to move from the yarn supply stopped position to the yarn supply position.
  • the ancillary guiding unit 31 (referring to FIG. 2 ) is drawn by another yarn 50 to move from the yarn supply stopped position to the yarn supply position.
  • the pushing section 302 drives the butting surface 424 moving away from the transmission shaft 20 so that the wedge portion 421 is separated from the transmission mechanism 21 as shown in FIG. 4B .
  • the wedge member 42 is located at the first position without wedging in the transmission mechanism 21 and cannot drive the yarn feeding wheel 40 to rotate synchronously with the transmission shaft 20, hence the transmission shaft 20 rotates idly against the yarn feeding wheel 40.
  • the yarn feeding body 10 further has a friction plate 13 in contact with the yarn feeding wheel 40 regularly.
  • the yarn feeding body 10 includes the guiding unit 30 and ancillary guiding unit 31; however, the invention also can achieve the same effect by providing merely single guiding unit.
  • the yarn feeding wheel 40 has a first yarn guiding surface 43 and a second yarn guiding surface 44.
  • the yarn feeding body 10 includes a guiding unit 30a which has a first yarn guiding ring 303a and a second yarn guiding ring 311 a respectively corresponding to the first yarn guiding surface 43 and second yarn guiding surface 44 to allow the yarn 50 to pass through and guide the yarn 50 to contact the first yarn guiding surface 43 or the second yarn guiding surface 44.
  • the guiding unit 30a When the yarn feeding wheel 40 starts supplying the yarn 50, the guiding unit 30a is drawn by the yarn 50 to move from the yarn supply position to the yarn supply stopped position, and the wedge member 42 is driven by the guiding unit 30a to move along the motion track to couple with the transmission mechanism 21, and further drive the yarn feeding wheel 40 to rotate synchronously with the transmission shaft 20.
  • the guiding unit 30a When the yarn feeding wheel 40 stops supplying the yarn 50, the guiding unit 30a is no longer drawn by the yarn 50, and can be moved from the yarn supply position to the yarn supply stopped position through a returning force.
  • the guiding unit 30a is moved along the motion track to push the wedge member 42 to separate from the transmission mechanism 21.
  • the yarn feeding apparatus includes a transmission mechanism driven by the transmission shaft, and the transmission shaft is movably coupled with at least one yarn feeding wheel, and the yarn feeding wheel has at least one wedge member to wedge in the transmission mechanism, hence the yarn feeding wheel can rotate idly against the transmission shaft corresponding to the guiding unit at the yarn supply stopped position, and rotate synchronously with the transmission shaft at the yarn supply position, thereby rotation of the yarn feeding wheel can be controlled independently. It provides significant improvements over the conventional techniques.
  • a yarn feeding apparatus for circular knitting machines including a yarn feeding body 10 and a transmission shaft 20 driven by the yarn feeding body 10.
  • the transmission shaft 20 is coupled with at least one yarn feeding wheel 40 freely rotating against the transmission shaft 20.
  • the yarn feeding body 10 includes at least one guiding unit 30 which is drawn by a yarn 50 to turn and move reciprocally between a yarn supply position and a yarn supply stopped position.
  • the transmission shaft 20 is coupled with at least one transmission mechanism 21 driven by the transmission shaft 20.
  • the yarn feeding wheel 40 includes at least one wedge member 42 corresponding to the transmission mechanism 21.
  • the wedge member 42 has a first position to separate from the transmission mechanism 21 and a second position pushed by the guiding unit 30 on a motion track to couple with the transmission mechanism 21 to drive the yarn feeding wheel 40 to rotate synchronously with the transmission shaft 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP11187908.6A 2011-11-04 2011-11-04 Dispositif d'alimentation en fil pour métiers à tricoter circulaires Withdrawn EP2589691A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11187908.6A EP2589691A1 (fr) 2011-11-04 2011-11-04 Dispositif d'alimentation en fil pour métiers à tricoter circulaires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11187908.6A EP2589691A1 (fr) 2011-11-04 2011-11-04 Dispositif d'alimentation en fil pour métiers à tricoter circulaires

Publications (1)

Publication Number Publication Date
EP2589691A1 true EP2589691A1 (fr) 2013-05-08

Family

ID=44905698

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11187908.6A Withdrawn EP2589691A1 (fr) 2011-11-04 2011-11-04 Dispositif d'alimentation en fil pour métiers à tricoter circulaires

Country Status (1)

Country Link
EP (1) EP2589691A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1505151A (en) * 1974-07-17 1978-03-30 Inst Textile De France Thread feed device for a knitting machine
US5388747A (en) * 1993-06-03 1995-02-14 Chen; Jen-Hui Positive yarn feeding device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1505151A (en) * 1974-07-17 1978-03-30 Inst Textile De France Thread feed device for a knitting machine
US5388747A (en) * 1993-06-03 1995-02-14 Chen; Jen-Hui Positive yarn feeding device

Similar Documents

Publication Publication Date Title
JP5100727B2 (ja) トラバース装置
JP6370719B2 (ja) 紡糸引取装置
KR20170129127A (ko) 권취기
CN101360853B (zh) 用于使运行纱线在生产交叉卷绕筒子的纺织机的纱线取出装置的区域内横动的辅助导纱器
CN101267999B (zh) 穿线方法
US6065711A (en) Yarn brake and textile machine and yarn feed device equipped therewith
DE102009004615A1 (de) Verfahren zum Betreiben einer Spulvorrichtung und Spulvorrichtung einer Auflaufspulen herstellenden Textilmaschine
US11982025B2 (en) Warping machine for a rope and corresponding method
KR20140101277A (ko) 척 장치 및 후프 권취 장치
US20130104604A1 (en) Yarn feeding apparatus for circular knitting machines
EP2589691A1 (fr) Dispositif d'alimentation en fil pour métiers à tricoter circulaires
GB2026986A (en) Web winding or unwinding apparatus
JP2016204162A (ja) 解撚長さ調節及び糸引戻しのためのループ形成器を備えたスプライサ並びにこのようなスプライサを備えた巻取りユニット及び巻取り機
KR20130050598A (ko) 원형 편물기용 실 공급 장치
SG189589A1 (en) Yarn feeding apparatus for circular knitting machines
JP2017065871A (ja) 糸張力付与部材、ゲート式糸張力付与装置、及び自動ワインダ
CN108298369B (zh) 卷取装置、纱线卷取单元及纱线卷取机
JP2007332525A6 (ja) 柄ビーム装置
GB2101640A (en) Overhung mounted rotatable centering spindle
US7290732B2 (en) Systems, apparatuses and methods for cutting and spooling paper
KR101448820B1 (ko) 재봉틀용 바늘땀 간격 조절장치 및 바늘땀 간격 조절방법, 그리고 바늘땀의 배열구조
US10377596B2 (en) Roll feeder device
CN2878046Y (zh) 钉箱机的钉线自动供给装置
CN201400755Y (zh) 圆形编织机中的供丝导向移动装置和使用其的丝供给装置
JP2016533439A (ja) 移動可能な摩擦スピンドルを備えたダブル摩擦アセンブリ

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: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

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: 20131109