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EP0761858A1 - Nadeleinheit für Strickmaschine - Google Patents

Nadeleinheit für Strickmaschine Download PDF

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Publication number
EP0761858A1
EP0761858A1 EP96113498A EP96113498A EP0761858A1 EP 0761858 A1 EP0761858 A1 EP 0761858A1 EP 96113498 A EP96113498 A EP 96113498A EP 96113498 A EP96113498 A EP 96113498A EP 0761858 A1 EP0761858 A1 EP 0761858A1
Authority
EP
European Patent Office
Prior art keywords
jack
needle
push
butt
resilient piece
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
EP96113498A
Other languages
English (en)
French (fr)
Other versions
EP0761858B1 (de
Inventor
Katsuyoshi Ikenaga
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.)
Ikenaga Co Ltd
Original Assignee
Ikenaga 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 Ikenaga Co Ltd filed Critical Ikenaga Co Ltd
Publication of EP0761858A1 publication Critical patent/EP0761858A1/de
Application granted granted Critical
Publication of EP0761858B1 publication Critical patent/EP0761858B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
    • D04B15/68—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B11/00—Straight-bar knitting machines with fixed needles

Definitions

  • This invention relates to a needle unit mainly for use in a weft knitting machine.
  • Fig. 6 shows a conventional needle unit which comprises a needle body 72 having a hook 70 and a latch 71 for opening and closing the hook 70, a jack 73 coupled to the bottom of the needle body 72 and provided with a butt 75 on one side thereof, and a presser 74 pressed against one side of the jack 73 and provided with a butt 76 protruding in the same direction as the butt 75.
  • This needle unit is inserted in each of a plurality of parallel needle grooves D2 formed in a needle bed B2.
  • a carriage C2 is provided so as to move along the needle bed B2 in the direction in which the needle grooves D2 are arranged. It has a reference surface 81 facing the needle bed B2 and having two kinds of cams 82 and 83 adapted to engage the butt 75.
  • the cams 82 and 83 differ in the degree of protrusion and the shape of the guide surfaces from each other. That is, the cam 83 protrudes more prominently from the reference surface 81 than the cam 82.
  • the carriage C2 is provided with a solenoid 84 adapted to press the butt 76.
  • the cam 83 guides the butt 75 to move the needle body 72 up and down together with the jack 73. Due to the different shapes of the cams 82 and 83, the needle body 72 is moved up and down by different degrees at different timings in the state shown in Fig. 7 than in the state shown in Fig. 6.
  • An object of this invention is to provide a needle unit which is changeable in movement and which is free of friction loss while the needle body is moving up and down.
  • a needle unit for use in a knitting machine comprising a select jack, a push-up jack and a needle body arranged in a needle groove in this order from bottom to top, the push-up jack being adapted to be pushed up by raising the select jack, the needle body having at its bottom a bifurcated portion comprising a support piece and a resilient piece, the push-up jack having its top end slidably inserted between the support piece and the resilient piece, the resilient piece being biased toward the push-up jack, the resilient piece being provided in its inner surface with two recesses having different depths and on its outer surface with a butt, the push-up jack having a protrusion on one side thereof adapted to engage in and out of one of the recesses when the push-up jack slides up and down.
  • the needle unit according to this invention is inserted in each of a plurality of parallel needle grooves D1 formed in the needle bed B1 and comprises a select jack 1, a push-up jack 2 and a needle body 3 arranged in this order from bottom to top.
  • the select jack 1 has a lower, a middle and an upper butt 4, 5 and 6 at one side thereof.
  • the butts 5 of the select jacks 1 in adjacent needle grooves D1 are longitudinally displaced from each other.
  • a butt 7 and a protrusion 8 are provided near its bottom end and at its intermediate portion, respectively.
  • the needle body 3 has a bifurcated bottom portion comprising a support piece 9 and a resilient piece 10.
  • the push-up jack 2 has its top end slidably inserted between the support piece 9 and the resilient piece 10.
  • the resilient piece 10 is biased toward the push-up jack 2 and formed with recesses 11 and 12 in the inner surface near its bottom end. As the push-up jack 2 is moved up and down, the protrusion 8 is adapted to engage in the recess 11 or 12.
  • the needle body 3 has a butt 13 on the outer surface of the resilient piece 10 near its bottom end and a butt 14 provided slightly over the base of the resilient piece 10 and protruding in the same direction as the butt 13.
  • the recess 11 is deeper than the recess 12, so that when the protrusion 8 of the push-up jack 2 is received in the recess 11, the butt 13 protrudes one step from the needle groove D1, and when the protrusion 18 is in the recess 12, the butt 13 will protrude two steps from the needle groove D2.
  • the protrusion 8 is not received in either of the recesses 11 and 12, the butt 13 is completely retracted in the needle groove D1.
  • the needle body 3 carries at its top end a hook 15 and a latch 16 for opening and closing the hook 15.
  • a carriage C1 is provided to move along the needle bed B1 in the direction in which the needle grooves D1 are arranged. It has a reference surface 21 facing the needle bed B1 and having cams 22-38 as shown in Fig. 2.
  • the cams 24, 28, 35 and 38 are protrudable from the reference surface 21.
  • the cams 31 and 32 are variable in the degree of protrusion from the reference surface 21.
  • the cam 34 is movable along a guide groove 39 formed in the reference surface 21.
  • a solenoid 40 is provided on the portion between the cams 22 and 25 to press each butt 5.
  • solid lines, chain lines and two-dot chain lines indicate the paths of butts 4, 6, 7, 13 and 14 when the needle unit performs knitting (forming a loop), tucking and forms no loop, respectively, as the carriage C1 is moved rightwardly with the left cam 24, right cam 28 and cam 38 retracted completely in the reference surface 21 and the cams 31 and 32 protruding to one step lesser degree than the other cams.
  • the right cam 23 guides the butt 4 to raise the select jack 1 and thus the push-up jack 2 until the protrusion 8 engages in the recess 11.
  • the butt 13 thus protrudes one step from the needle groove D1.
  • the butt 4 is guided by the right cam 24 (Fig. 4), so that the select jack 1 rises further, pushing up the push-up jack 2 until the protrusion 8 engages in the recess 12.
  • the butt 13 thus protrudes two steps from the needle groove D1.
  • the needle body 3 rises together with the push-up jack 2 with its butt 13 guided by the cams 31 and 32.
  • the loop formed thus moves down past the latch 16, and a yarn is supplied to the hook 15.
  • the butt 5 When no loop is formed, the butt 5 is pushed by the solenoid 40, as shown in Fig. 5, to retract the butt 4 completely into the needle groove D1, so that the select jack 1 and thus the push-up jack 2 do not rise.
  • the protrusion 8 does not engage in either of the recesses 11 and 12.
  • the carriage C1 thus moves with the butt 13 retracted in the needle groove D1, so that the needle body 3 does not rise from the needle bed B and no yarn is provided to the hook 15. Thus, no loop is formed.
  • the left cam 24 and the right cam 28 are protruded from the reference surface 21 with the right cam 24 and the left cam 28 retracted in the reference surface 21.
  • the needle body 3 may be divided into a needle member 50 having the hook 15 and the latch 16, and a support member 51 having the support piece 9 and the resilient piece 10. With this arrangement, if the resilient piece 10 is broken, it is necessary to replace only the support member 51. It is thus possible to reduce maintenance cost.
  • the support piece 9 and the resilient piece 10 may be separate members so that only the resilient piece 10 can be replaced.
  • the resilient piece 10 is coupled to the support piece 9 through a movable joint 52 and is biased by a spring rod 53 toward the push-up jack 2. If the spring rod 53 is broken, it is necessary to replace only the spring rod 53.
  • the amount of protrusion of each butt from the needle groove is adjusted by adjusting the distance the select jack is raised to change over the cams to be brought into engagement with the butts and thus to change the movement of the needle unit. jack by engaging the protrusion in one of the recesses. Since no frictional resistance is produced, no large force is needed to raise the needle body.
  • the needle body is divided into a needle member and a support member provided with the support piece and the resilient piece, if the resilient piece is broken, it is necessary to replace only the support portion. Repair costs are thus low.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP96113498A 1995-09-07 1996-08-22 Nadeleinheit für Strickmaschine Expired - Lifetime EP0761858B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP22994695 1995-09-07
JP22994695 1995-09-07
JP229946/95 1995-09-07
JP8184956A JP2747280B2 (ja) 1995-09-07 1996-07-15 編機用針ユニット
JP18495696 1996-07-15
JP184956/96 1996-07-15

Publications (2)

Publication Number Publication Date
EP0761858A1 true EP0761858A1 (de) 1997-03-12
EP0761858B1 EP0761858B1 (de) 2000-06-28

Family

ID=26502813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96113498A Expired - Lifetime EP0761858B1 (de) 1995-09-07 1996-08-22 Nadeleinheit für Strickmaschine

Country Status (7)

Country Link
EP (1) EP0761858B1 (de)
JP (1) JP2747280B2 (de)
KR (1) KR100244077B1 (de)
CN (1) CN1062042C (de)
DE (1) DE69609024T2 (de)
ES (1) ES2149410T3 (de)
TW (1) TW312245U (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100494538C (zh) * 2005-07-13 2009-06-03 冯加林 具有两段压针密度的织针与辅针组合装置
DE102010026016B4 (de) * 2010-07-03 2012-04-26 H. Stoll Gmbh & Co. Kg Flachstrickmaschine
DE102010056425B3 (de) * 2010-12-28 2012-04-05 H. Stoll Gmbh & Co. Kg Strickmaschine
CN102011264A (zh) * 2011-01-13 2011-04-13 常州德贝机械有限公司 电脑横机的织针和针板组件
CA2925149C (en) * 2015-05-25 2022-10-04 Xiamen Institute Of Rare Earth Materials Extractant and method for extracting and separating yttrium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4637227A (en) * 1985-07-19 1987-01-20 Shima Idea Center Co., Ltd. Flat knitting machine having compound needles
WO1990004669A1 (de) * 1988-10-28 1990-05-03 Universal Maschinenfabrik Dr. Rudolf Schieber Gmbh & Co. Kg Flachstrickmaschine
EP0407872A2 (de) * 1989-07-10 1991-01-16 MEC-MOR S.r.l. Strickmaschine mit einer Nadelsteuereinrichtung zum Stricken von Maschenmusterung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3523989C1 (de) * 1985-07-04 1987-01-02 Schieber Universal Maschf Flachstrickmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4637227A (en) * 1985-07-19 1987-01-20 Shima Idea Center Co., Ltd. Flat knitting machine having compound needles
WO1990004669A1 (de) * 1988-10-28 1990-05-03 Universal Maschinenfabrik Dr. Rudolf Schieber Gmbh & Co. Kg Flachstrickmaschine
EP0407872A2 (de) * 1989-07-10 1991-01-16 MEC-MOR S.r.l. Strickmaschine mit einer Nadelsteuereinrichtung zum Stricken von Maschenmusterung

Also Published As

Publication number Publication date
EP0761858B1 (de) 2000-06-28
JP2747280B2 (ja) 1998-05-06
KR970015823A (ko) 1997-04-28
JPH09132842A (ja) 1997-05-20
DE69609024D1 (de) 2000-08-03
DE69609024T2 (de) 2001-03-08
CN1062042C (zh) 2001-02-14
KR100244077B1 (ko) 2000-04-01
ES2149410T3 (es) 2000-11-01
TW312245U (en) 1997-08-01
CN1153836A (zh) 1997-07-09

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