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EP2636778B1 - Procédé permettant d'empêcher l'effilochage de fil à tricoter - Google Patents

Procédé permettant d'empêcher l'effilochage de fil à tricoter Download PDF

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Publication number
EP2636778B1
EP2636778B1 EP13001104.2A EP13001104A EP2636778B1 EP 2636778 B1 EP2636778 B1 EP 2636778B1 EP 13001104 A EP13001104 A EP 13001104A EP 2636778 B1 EP2636778 B1 EP 2636778B1
Authority
EP
European Patent Office
Prior art keywords
stitch
yarn
knitting
needle bed
row
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.)
Not-in-force
Application number
EP13001104.2A
Other languages
German (de)
English (en)
Other versions
EP2636778A1 (fr
Inventor
Michihisa Ueda
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.)
Shima Seiki Mfg Ltd
Original Assignee
Shima Seiki Mfg 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 Shima Seiki Mfg Ltd filed Critical Shima Seiki Mfg Ltd
Publication of EP2636778A1 publication Critical patent/EP2636778A1/fr
Application granted granted Critical
Publication of EP2636778B1 publication Critical patent/EP2636778B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B7/00—Flat-bed knitting machines with independently-movable needles
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/10—Patterned fabrics or articles
    • D04B1/12—Patterned fabrics or articles characterised by thread material
    • D04B1/126—Patterned fabrics or articles characterised by thread material with colour pattern, e.g. intarsia fabrics
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes

Definitions

  • the present invention relates to a method for preventing unraveling of a knitting yarn at a yarn-in portion or a yarn-out portion where the knitting yarns are switched in the middle of knitting a knitted fabric when knitting the knitted fabric using a flat knitting machine.
  • Such methods are known, for instance, from US 5758518A or EP 0 641 879 A .
  • knitting yarns are switched in the middle of knitting the knitted fabric.
  • the portion where the knitting yarns are switched includes a yarn-out portion, where the knitting yarn is pulled out from a knitted fabric portion knitted with the knitting yarn before the switching, and a yarn-in portion, where the knitting yarn after the switching is introduced to the knitted fabric portion knitted with the knitting yarn before the switching, and the knitting yarns need to be prevented from unraveling at the yarn-in portion and the yarn-out portion.
  • the applicant of the present invention proposed a method for preventing unraveling of a knitting yarn for driving the flat knitting machine to perform prevention of unraveling (see e.g., Patent Document 1).
  • Patent Document 1 when carrying out yarn-in or yarn-out, two holding points each consisting of a pickup stitch are formed, and one of the holding points is overlapped on a front side of an existing stitch and the other holding point is overlapped on a back side of another existing stitch to prevent unraveling of the knitting yarn.
  • the existing stitches refer to the stitches already held on a needle bed before the holding points are formed, and the existing stitches to which each holding point is overlapped are at positions proximate to each other.
  • the number of knitting courses may increase if a flat knitting machine with only a few number of cam systems is used.
  • the present invention has been made in view of the above situation, and it is an object thereof to provide a method for preventing unraveling a knitting yarn capable of preventing unraveling of the knitting yarn with simple steps without using transfer.
  • the present invention achieves the above object by preventing unraveling of the knitting yarn using a racking function of a needle bed.
  • the present invention is a method for preventing unraveling of a knitting yarn at a yarn-in portion or a yarn-out portion when knitting a knitted fabric having at least one of the yarn-in portion and the yarn-out portion where knitting yarns are switched in the middle of knitting the knitted fabric using a flat knitting machine, which includes at least a front and a back needle bed and in which either one of the front and back needle beds is capable of being racked in a traverse direction.
  • the method for preventing unraveling of the knitting yarn of the present invention includes the following steps ⁇ to ⁇ .
  • Step ⁇ knitting a first stitch row including a first stitch, a second stitch, and a third stitch continuing in a knitting width direction.
  • the first stitch to the third stitch are arranged to satisfy either [A] or [B] below.
  • Step ⁇ racking the needle bed, interchanging positions in the knitting width direction of the first stitch and the second stitch, and knitting a second stitch row including a fourth stitch, a fifth stitch, and a sixth stitch following in respective wale directions of the first stitch, the second stitch, and the third stitch.
  • the knitting needle Y on which the second stitch is held
  • the knitting needle X on which the first stitch is held
  • either one of the needle beds is racked so that the knitting needle Y is on the left of the knitting needle X in the step ⁇ .
  • the racking pitch is preferably within a range of one to four pitches so as not to cause yarn breakage.
  • Step ⁇ racking the needle bed in a direction opposite from the step ⁇ to return a left and right position relationship of the first stitch and the second stitch to a state identical with the step ⁇ .
  • the knitting needle Y merely needs to be on the right of the knitting needle X, and the racking pitch of the step ⁇ may be different from the racking pitch of the step ⁇ .
  • Step ⁇ knitting a third stitch row following in a wale direction of the second stitch row, fixing a position relationship of cross-over yarns formed between the first stitch and the second stitch and between the second stitch and the third stitch, and the cross-over yarns formed between the fourth stitch and the fifth stitch, and between the fifth stitch and the sixth stitch to prevent unraveling of the knitting yarn at the yarn-in portion or the yarn-out portion.
  • tuck is performed on the stitch held on the needle bed before the step ⁇ at the yarn-in portion and after the step ⁇ at the yarn-out portion.
  • the cross-over yarns cross in a complex manner near an area where the first stitch to the third stitch of the first stitch row, and the fourth stitch to the sixth stitch of the second stitch row continuing in the wale direction thereof are formed.
  • the unraveling of the knitting yarn can be prevented at such area.
  • method for preventing unraveling of the knitting yarn of the present invention prevents the unraveling of the knitting yarn by using the racking of the needle bed without transferring stitches, and hence, an increase in the number of knitting courses can be suppressed even if a flat knitting machine with only a few cam systems is used.
  • the prevention of unraveling of the knitting yarn at the yarn-in portion/yarn-out portion can be more firmly carried out by performing tuck at the time of yarn-in/yarn-out with the method for preventing unraveling of the knitting yarn of the present invention.
  • Fig. 1 is a knitting step diagram related to a method for preventing unraveling of a knitting yarn shown in an embodiment.
  • a method for preventing unraveling of a knitting yarn of the present invention will be hereinafter described using a portion where the knitting yarns in a horizontal stripe pattern are switched by way of example.
  • a two-bed flat knitting machine including a pair of a front and a back needle bed extending in a traverse direction and disposed opposite to each other in a cross direction, and in which either one of the front and back needle beds is capable of racking in the traverse direction.
  • the flat knitting machine to use may, of course, be a four-bed flat knitting machine.
  • Fig. 1 is a knitting step diagram showing knitting procedure of an unraveling preventing method. From the left side of Fig. 1 , "S + number" in the first column indicates a step number, “arrow + 1P” in the second column indicates a racking direction and a racking pitch of the needle bed, “arrow (K means involving knitting)” in the third column indicates the moving direction of a yarn feeder, and a fourth column indicates a state of an actual knitting operation. In the fourth column, ⁇ indicates a new stitch (including pickup stitch), ⁇ indicates a stitch held on the needle beds, V indicates a tuck stitch, and ⁇ and V indicate a yarn feeder.
  • a flat knitting machine used in the present embodiment has a front needle bed (hereinafter referred to as FB) and a back needle bed (hereinafter referred to as BB) facing each other in a state shifted by 0.5 pitch.
  • FB front needle bed
  • BB back needle bed
  • racking is performed first, and then knitting is performed.
  • S0 shows a state in which a yarn feeder 8 is moved in a left direction in a plane of drawing to knit one of the stripes in the horizontal stripe pattern.
  • the yarn-out is carried out in S1 to S3 and S5 described below from the state of S0, and the yarn-in is carried out in S4 and S5 to S7.
  • the yarn feeder 8 is moved in a right direction in the plane of drawing to knit a first stitch row 10 (step ⁇ in the yarn-out).
  • the first stitch row 10 includes a first stitch 1, a second stitch 2, and a third stitch 3 lined toward a knitting direction of the first stitch row 10 in order from a starting side.
  • the second stitch 2 is a pickup stitch knitted on the BB, and the first stitch 1 and the third stitch 3 are stitches continuously knitted in a wale direction of the stitches held on the FB in S0.
  • the second stitch 2 may be formed by split knitting.
  • the BB is racked by one pitch in the left direction in the plane of drawing, and then the yarn feeder 8 is moved in the left direction in the plane of drawing to knit a second stitch row 20 following in the wale direction of the first stitch row 10 (step ⁇ in the yarn-out).
  • the second stitch row 20 includes a fifth stitch 5, a fourth stitch 4, and a sixth stitch 6 lined toward a direction opposite to the knitting direction of the second stitch row 20 in order from a terminating side.
  • the BB is racked by one pitch in the right direction in the plane of drawing, and the left and right position relationship of the first stitch 1 and the second stitch 2 is made the same as the time point S1 is finished (step ⁇ in the yarn-out). Accordingly, cross-over yarns connecting the stitches 1 to 6 are crossed in a complex manner near an area where the first stitch 1, the second stitch 2, and third stitch 3 of the first stitch row 10, and the fourth stitch 4, the fifth stitch 5, and the sixth stitch 6 of the second stitch row 20 continuing in the wale direction of the first stitch row 10 are formed.
  • the yarn feeder 8 is moved in the right direction in the plane of drawing to perform tuck on the stitch on the right side in the plane of drawing (side opposite to the side of pulling out the knitting yarn) of the stitch held on the BB among the stitches of the second stitch row 20.
  • the yarn feeder 8 is then moved in the left direction in the plane of drawing in S3, the knitting yarn from the yarn feeder 8 is taken out of the knitting direction of the knitted fabric, and the knitting of the stripe by the yarn feeder 8 is finished.
  • the knitting of the stripe by the yarn feeder 8 is finished, the prevention of unraveling of the knitting yarn at the yarn-out portion is not yet completed.
  • the tuck performed in S3 is the tuck performed after the step ⁇ in the yarn-out, and although it is not an essential step, the prevention of unraveling of the knitting yarn of the yarn-out portion can be made more secure by performing the tuck.
  • the stitch to perform the tuck may be positioned on the further right side in the plane of drawing of the position illustrated in S3, and is not particularly limited.
  • a new stripe following the stripe knitted with the knitting yarn from the yarn feeder 8 is knitted using a new yarn feeder 9.
  • the new yarn feeder 9 is moved in the right direction in the plane of drawing to perform the tuck on an end stitch of the second stitch row 20 of the yarn-out portion, and then the yarn feeder 9 is moved in the left direction in the plane of drawing.
  • the tuck of S4 is the tuck performed before the step ⁇ in the yarn-in, and although it is not an essential step, it has the effect of making the prevention of the unraveling of the knitting yarn of the yarn-in portion more secure. Therefore, S4 is preferably carried out.
  • the stitch to perform the tuck is not particularly limited, but the stitch on which the tuck of the yarn-out is carried out in S3 is preferably avoided. This is because triple stitches will be obtained if the tuck is performed on the same stitch in S3 and S4.
  • the yarn feeder 9 is moved in the right direction in the plane of drawing to knit a third stitch row 30 following in the wale direction of the second stitch row 20 knitted in the yarn-out (step ⁇ in the yarn-out).
  • step ⁇ in the yarn-out.
  • the third stitch row 30 knitted in S5 is also the first stitch row 10 in the yarn-in (step ⁇ in the yarn-in), and the first stitch row 10 includes the first stitch 1, the second stitch 2, and third stitch 3 lined toward the knitting direction of the first stitch row 10 in order from a starting side.
  • the second stitch 2 is knitted on the BB, and the first stitch 1 and the third stitch 3 are knitted on the FB.
  • the BB is racked by one pitch in the left direction in the plane of drawing, and then the yarn feeder 9 is moved in the left direction in the plane of drawing to knit the second stitch row 20 following in the wale direction of the first stitch row 10 (step ⁇ in the yarn-in).
  • the fourth stitch 4, the fifth stitch 5, and the sixth stitch 6 of the second stitch row 20 are each formed continuously in the wale direction of the first stitch 1, the second stitch 2, and the third stitch 3.
  • the BB is racked by one pitch in the right direction in the plane of drawing, and the left and right position relationship of the first stitch 1 and the second stitch 2 is made the same as the time point S5 is finished (step ⁇ in the yarn-out). Accordingly, cross-over yarns connecting the stitches 1 to 6 are crossed in a complex manner near an area where the first stitch 1, the second stitch 2, and third stitch 3 of the first stitch row 10, and the fourth stitch 4, the fifth stitch 5, and the sixth stitch 6 of the second stitch row 20 continuing in the wale direction of the first stitch row 10 are formed.
  • the yarn feeder 9 is moved in the right direction in the plane of drawing to knit the third stitch row 30 continuing in the wale direction of the second stitch row 20 knitted in S6 (step ⁇ in the yarn-in).
  • step ⁇ in the yarn-in the knitting yarn of the yarn-in portion is prevented from unraveling, similar to the yarn-out portion.
  • the second stitch 2 of the stitches 1 to 3 knitted to prevent the unraveling of the knitting yarn is knitted on the BB (see S1 and S5 of Fig. 1 ).
  • the first stitch 1 may be knitted on the BB and the second stitch 2 and the third stitch 3 may be knitted on the FB (in this case, the first stitch 1 is a pickup stitch).
  • the BB is racked by one pitch in the right direction in the plane of drawing to interchange the positions in the knitting width direction of the first stitch 1 and the second stitch 2.
  • the left and right position relationship of the first stitch 1 and the second stitch 2 is returned to be the same as S1 and S5 in a state the BB is racked by one pitch in the left direction in the plane of drawing.
  • the prevention of the unraveling of the knitting yarn in the yarn-in portion/yarn-out portion can be carried out even with the above knitting steps.
  • the yarn-in/yarn-out is carried out at the end in the knitting width direction of the knitted fabric, but the yarn-in/yarn-out may be carried out at portions other than the end.
  • the knitting yarn is often changed at an intermediate portion (portion other than the end) in the knitting width direction of the knitted fabric, and hence the yarn-in/yarn-out shown in Fig. 1 is preferably carried out at the intermediate portion in such a case.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Of Fabric (AREA)

Claims (2)

  1. Procédé pour empêcher l'effilochage d'un fil à tricoter au niveau d'une portion d'entrée de fil ou d'une portion de sortie de fil lors du tricotage d'un tissu tricoté comportant au moins l'une de la portion d'entrée de fil et de la portion de sortie de fil, dans lequel des fils à tricoter sont commutés au milieu du tricotage du tissu tricoté en utilisant une machine à tricoter à plat, qui comprend au moins une fonture avant et une fonture arrière (FB, BB) et dans laquelle l'une ou l'autre des fontures avant et arrière peut être déplacée dans une direction transversale ; le procédé étant caractérisé par :
    une étape α consistant à tricoter une première rangée de mailles (10) comprenant une première maille (1), une deuxième maille (2), et une troisième maille (3) continuant dans une direction de largeur de tricotage de façon à satisfaire les exigences [A] ou [B],
    [A] agencer la première maille (1) et la troisième maille (3) de la première maille (1), la deuxième maille (2) et la troisième maille (3) sur une première fonture (FB) et la deuxième maille (2) sur l'autre fonture (BB),
    [B] agencer la deuxième maille (2) et la troisième maille (3) de la première maille (1), la deuxième maille (2) et la troisième maille (3) sur une première fonture (FB), et la première maille (1) sur l'autre fonture (BB) ;
    une étape β consistant à déplacer la fonture (BB), permuter les positions dans la direction de largeur de tricotage de la première maille (1) et de la deuxième maille (2), et tricoter une deuxième rangée de mailles (20) comprenant une quatrième maille (4), une cinquième maille (5) et une sixième maille (6) à la suite dans des directions de colonne de mailles respectives de la première maille (1), la deuxième maille (2) et la troisième maille (3) ;
    une étape γ consistant à déplacer la fonture (BB) dans la direction opposée par rapport à l'étape β pour ramener une relation de position gauche droite de la première maille (1) et de la deuxième maille (2) à un état identique à celui de l'étape α ; et
    une étape δ consistant à tricoter une troisième rangée de mailles (30) à la suite dans une direction de colonne de mailles de la deuxième rangée de mailles (20), fixer une relation de position de fils de croisement formés entre la première maille (1) et la deuxième maille (2), entre la deuxième maille (2) et la troisième maille (3), entre la quatrième maille (4) et la cinquième maille (5), et entre la cinquième maille (5) et la sixième maille (6) pour empêcher un effilochage du fil à tricoter au niveau de la portion d'entrée de fil ou de la portion de sortie de fil.
  2. Procédé pour empêcher un effilochage du fil à tricoter selon la revendication 1, caractérisé en ce qu'un rentrage est réalisé sur la maille maintenue sur la fonture avant l'étape α au niveau de la portion d'entrée de fil et après l'étape γ au niveau de la portion de sortie de fil.
EP13001104.2A 2012-03-06 2013-03-05 Procédé permettant d'empêcher l'effilochage de fil à tricoter Not-in-force EP2636778B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012049733A JP5881479B2 (ja) 2012-03-06 2012-03-06 編糸の解れ止め方法

Publications (2)

Publication Number Publication Date
EP2636778A1 EP2636778A1 (fr) 2013-09-11
EP2636778B1 true EP2636778B1 (fr) 2015-09-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP13001104.2A Not-in-force EP2636778B1 (fr) 2012-03-06 2013-03-05 Procédé permettant d'empêcher l'effilochage de fil à tricoter

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Country Link
EP (1) EP2636778B1 (fr)
JP (1) JP5881479B2 (fr)
KR (1) KR101384189B1 (fr)
CN (1) CN103306029B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015161053A (ja) * 2014-02-28 2015-09-07 株式会社島精機製作所 編地の解れ止め方法
JP6153509B2 (ja) * 2014-12-27 2017-06-28 株式会社島精機製作所 編成方法
JP7785654B2 (ja) * 2022-10-14 2025-12-15 株式会社島精機製作所 編地の編成方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0765258B2 (ja) * 1990-07-17 1995-07-12 株式会社島精機製作所 編地の端部処理方法
DE4330071C2 (de) 1993-09-06 1996-08-01 Schieber Universal Maschf Verfahren zum Stricken von Intarsia-Mustern auf Flachstrickmaschinen
JP3099304B2 (ja) * 1994-09-01 2000-10-16 株式会社島精機製作所 解れ止め方法
JPH09217254A (ja) 1996-02-13 1997-08-19 Tsudakoma Corp 渡り糸止め部の形成方法
JP2001055651A (ja) * 1999-08-11 2001-02-27 Tsudakoma Corp 横編地における渡り糸の括結解れ止め法
CN1760420A (zh) * 2004-10-11 2006-04-19 江南大学 一种抗脱散纬编织物结构
CN102264962B (zh) * 2008-12-24 2013-09-25 株式会社岛精机制作所 针织纱的防脱散方法及针织物

Also Published As

Publication number Publication date
JP5881479B2 (ja) 2016-03-09
KR20130102000A (ko) 2013-09-16
CN103306029A (zh) 2013-09-18
EP2636778A1 (fr) 2013-09-11
CN103306029B (zh) 2014-12-24
KR101384189B1 (ko) 2014-04-10
JP2013185270A (ja) 2013-09-19

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