EP0684330A1 - Strickmaschine und Verfahren zur Herstellung von Strickwaren - Google Patents

Strickmaschine und Verfahren zur Herstellung von Strickwaren Download PDF

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Publication number
EP0684330A1
EP0684330A1 EP95107921A EP95107921A EP0684330A1 EP 0684330 A1 EP0684330 A1 EP 0684330A1 EP 95107921 A EP95107921 A EP 95107921A EP 95107921 A EP95107921 A EP 95107921A EP 0684330 A1 EP0684330 A1 EP 0684330A1
Authority
EP
European Patent Office
Prior art keywords
needles
cylinder
cam
knitting
dial
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
EP95107921A
Other languages
English (en)
French (fr)
Other versions
EP0684330B1 (de
Inventor
Toshimitsu Musha
Yuichi C/O Nisshinbo Industries Inc. Yanai
Ken C/O Nisshinbo Industries Inc. Morikawa
Yuki C/O Nisshinbo Industries Inc. Niwa
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.)
Nisshinbo Holdings Inc
Original Assignee
Nisshinbo Industries Inc
Nisshin Spinning 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 Nisshinbo Industries Inc, Nisshin Spinning Co Ltd filed Critical Nisshinbo Industries Inc
Publication of EP0684330A1 publication Critical patent/EP0684330A1/de
Application granted granted Critical
Publication of EP0684330B1 publication Critical patent/EP0684330B1/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
    • 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 invention relates to a knitting machine and a method of producing knitted fabrics.
  • conventional knitting machines the separation between all the knitting needles is kept constant, whereas the feed speed of the yarn used for knitting and the rotational speed of a cylinder of the knitting machine are linked with each other in order to provide knitted fabrics of constant loop size.
  • knitting needles are removed at fixed intervals or at random intervals in order to impart a certain irregularity to the knitted fabric.
  • the object underlying the present invention is to provide a knitting machine and a method of producing knitted fabrics by means of which knits are provided having a natural, irregular feel that is comfortable to a wearer.
  • One advantage of the present invention resides in that knitted fabrics are provided, which can be produced on an industrial scale and which provide the comfortable feel of hand-knitted fabrics.
  • 1/f fluctuation is defined and understood as a power spectrum, with a frequency component f, and proportional to 1/f k , wherein k is approximately 1, and as a power spectrum which is similar to the above.
  • knitted fabrics can be obtained wherein the stitching pattern is not constant, nor does it vary randomly. Rather, the stitching pattern varies with a particular correlation, namely a correlation with a 1/f fluctuation, thus imparting to the fabric a feel with the natural irregularity of a hand-knitted fabric, which provides a special esthetic beauty and is comfortable to wear.
  • Such knitted fabrics giving the same natural irregular feel as that of hand-knitted fabrics can be produced as machine-knitted goods at low cost on an industrial scale.
  • FIG. 1 of the drawings An example of a circular knitting machine 1 is shown in Fig. 1 of the drawings.
  • the knitting machine 1 comprises a plurality of bobbins 21 arranged around the perimeter in the upper portion thereof.
  • a yarn feed unit 2 is provided which controls and feeds yarn 22 from the bobbins 21 to a knitting unit 3 in which needles 30 knit the yarn 22 into a knitted fabric 6.
  • a take-up unit 4 is provided which takes up the knitted fabric 6.
  • the operation of the knitting machine 1 is controlled by means of a controller unit 5.
  • the invention is not restricted to a circular knitting machine as set forth above, rather, the invention can also be applied to a weft knitting machine, a warp knitting machine or other types of knitting machines.
  • the yarn feed unit 2 supplies yarn 22 to the knitting unit 3, and it comprises a plurality of bobbins 21 onto which the yarn 22 is wound.
  • the yarn 22 is supplied from the bobbins 21 to the needles 30 in the knitting unit 3 by means of a top stopper 23, an IRO tape 24 and a feeder.
  • the operation of the IRO tape 24 is controlled by the torque which is transferred by the rotation of a main motor 52 belonging to the controller unit 5.
  • the rotation of the main motor 52 is transmitted via gear boxes 51 and 25 and other components in order to adjust thereby the amount of yarn 22 which is fed from the bobbins 21 to the needles 30.
  • Knitting Unit (Figs. 3 and 4)
  • each knitting needle 30 comprises a butt 33 at the one side, and a hook 31 and a latch 32 onto which the yarn 22 is looped and knitted.
  • a cam holder 35 encloses the outer circumference of the needle cylinder 34, and a cam 36, shown in detail in Fig. 4, is positioned inside the cam holder 35, wherein the butt 33 of a needle 30 interlocks in a respective cam groove 37.
  • such a configuration is also applicable to a double knitting machine of any generally-known configuration, such as a dial and cylinder knitting machine.
  • a dial and cylinder knitting machine in addition to the set of knitting needles 30 arranged axially around the needle cylinder 34, another set of needles is arranged radially on the upper face of a dial, wherein a cam is set on the dial upper face.
  • each cam 36 has a cam groove 37 in which the butt 33 of the respective needle 30 interlocks.
  • the pattern of the cam groove 37 corresponds to the stitching mode.
  • a knit stitch pattern of embodiment 61 is formed with a continuous series of mountain-shaped grooves;
  • a welt-and-knit stitch pattern of embodiment 62 comprises a combination of a mountain-shaped groove and a flat groove;
  • a tuck-and-knit stitch pattern of embodiment 63 comprises a combination of a mountain-shaped groove and a plateau-shaped groove.
  • the pattern of the cam groove 37 can be formed from two or more vertical stages in order to produce a knitted fabric 6 in which the stitching mode varies along the width of the fabric 6 as the butt 33 of the needle 30 interlocks with the cam groove 37 of each pattern.
  • the upper cam groove 37 is set to have a knit stitch pattern of embodiment 61 and the lower cam groove 37 is set to have a welt-and-knit stitch pattern of embodiment 62.
  • the next single adjacent needle 30 interlocks in the lower cam groove 37
  • a following series of needles 30 interlock in the upper level, and so forth, and the alternating positioning thereof produces a knitted fabric 6 in which a knit stitch 64 and a welt-and-knit stitch 65 are expressed along the width of the fabric 6.
  • a knitted fabric 6 is produced in which a knit stitch 64 and a tuck-and-knit stitch are expressed along the width of the fabric 6.
  • a knitted fabric 6 is obtained in which a knit stitch 64, a welt-and-knit stitch 65, and a tuck-and-knit stitch are expressed along the width of the fabric 6.
  • a 1/f fluctuation numerical sequence is determined from Y1 , y 2 , Y3 , owing formed by multiplying n coefficients, a 1 , a 2 , a3, notably, an with numbers x 1 , X 2 , x 3 , whereas
  • y j can be expressed by the following Equation 1.
  • the sequence of numerical values forming y 1 , y 2 , y 3 , Vietnamese has a 1/f spectrum.
  • refererence is made to Seitai shingou (Biological Signaling), Chapter 10, "Biological Rhythms and Fluctuations", published by Corona Publishers, Ltd. in 1989.
  • a 1/f fluctuation sequence is usually generated in two steps.
  • a sequence of random numbers is generated by using a computer, for example.
  • a certain number n of coefficients a - which are stored in a memory device - are successively multiplied on the random numbers.
  • a sequence of numerical values y is obtained by a linear transformation.
  • This numerical sequence has a 1/f spectrum, and it can be used in a 1/f numerical sequence.
  • Equation 1 for a sequence of numerical values y having a 1/f sequence can be used in order to create a melody.
  • the scale and the range with a lowest frequency fL and a highest frequency fU are determined.
  • a 1/f sequence y is derived, and a linear transformation is performed so that the upper and lower limits become the lowest frequency fL and the highest frequency fU, respectively.
  • the values of the sequence y so derived are regarded as acoustic oscillation frequencies, and are substituted for the oscillation frequencies of the scale they most closely approximate.
  • they are arranged, for example, as quarter notes, between or on the lines of a staff on music paper.
  • Fig. 7 shows a portion of a melody derived using this method.
  • An example of a numerical sequence derived by assigning numerical values corresponding to the notes of the melody of Fig. 7 - giving a value of 1 to the reference note - is shown in Example 1 of Fig. 8.
  • Example 2 and Example 3 have been derived proportionally from Example 1 in which 2 088 needles 33 are combined in the knitting machine 1.
  • Example 2 six patterns of the same numerical sequence are arranged on the circumference of the needle cylinder 34, whereas in Example 3 four patterns of the same numerical sequence are arranged on the circumference of the needle cylinder 34.
  • the needles 30 are arranged in cam grooves 37 of equal spacing around the circumference of the needle cylinder 34 in a manner such that one cam groove 37 is left empty at specified intervals varying with a 1/f fluctuation in order to form a stitching pattern with a 1/f fluctuation across the width of the fabric 6, wherein the stitching varies in the cross direction, and the variation has a 1/f fluctuation.
  • Fig. 8 shows the sequence of the needles 30 and the corresponding numerical sequences of Examples 1 to 3.
  • a numerical sequence 27, 27, 21, . which has a 1/f fluctuation
  • This is repeatedly following the numerical sequence, wherein the empty cam grooves 37 without a needle form a distributed pattern 65 with a 1/f fluctuation, which imparts a 1/f fluctuation to the stitching along the width of the fabric 6.
  • Knitted Fabric - Example 2 (Figs. 8 and 9)
  • a knitted fabric 6 is produced by incorporating welt-and-knit stitching 65 into knit stitching 64 such that the welt-and-knit stitching 65 is distributed with a 1/f fluctuation.
  • the cam 36 as shown in Fig. 4 and the numerical sequence Example 3 in Fig.
  • the butts 33 of 26 needles 30 are interlocked in the upper cam groove 37 designed with a knit stitching pattern of embodiment 61, and the butt 33 of the single adjacent needle 30 is interlocked in the lower cam groove 37 designed with a welt-and-knit stitch pattern of embodiment 62 (the total of 26 knit stitch needles plus 1 welt-and-knit stitch needle is 27 needles); then the next 26 needles 33 are interlocked in the upper cam groove 37 and the following single needle 33 is interlocked in the lower cam groove 37.
  • This process is repeated while adjusting the number of needles 33 to the values of the numerical sequence, to incorporate welt-and-knit stitching 65 into the knit stitching 64 in order to create a knitted fabric 6 in which the welt-and-knit stitch distribution has a 1/f fluctuation (the stitching changes along the width of the fabric 6 such that a welt-and-knit stitch 65 is distributed among knit stitches 64 with a 1/f fluctuation).
  • a portion of the knitted fabric 6, namely the knitted fabric according to Example 2, obtained by this method is shown in Fig. 9 of the drawings.
  • a sequence for a 3-stage pattern as shown in Fig. 6 is also possible.
  • a welt-and-knit stitch pattern of embodiment 62 of the knitted fabric according to Example 2 is alternated with the tuck-and-knit stitch pattern of embodiment 63.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Knitting Of Fabric (AREA)
EP95107921A 1994-05-26 1995-05-23 Strickmaschine und Verfahren zur Herstellung von Strickwaren Expired - Lifetime EP0684330B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP136417/94 1994-05-26
JP6136417A JP2651894B2 (ja) 1994-05-26 1994-05-26 編機及び編物の製造方法

Publications (2)

Publication Number Publication Date
EP0684330A1 true EP0684330A1 (de) 1995-11-29
EP0684330B1 EP0684330B1 (de) 1999-01-13

Family

ID=15174675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95107921A Expired - Lifetime EP0684330B1 (de) 1994-05-26 1995-05-23 Strickmaschine und Verfahren zur Herstellung von Strickwaren

Country Status (6)

Country Link
EP (1) EP0684330B1 (de)
JP (1) JP2651894B2 (de)
KR (1) KR100218993B1 (de)
CN (1) CN1061111C (de)
DE (1) DE69507194T2 (de)
HK (1) HK1011061A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1878822A1 (de) * 2006-07-12 2008-01-16 Ganzoni Management AG Verfahren zum Angeben von Zuständen zu den Maschen eines Gewebes
WO2022070188A1 (en) * 2020-10-01 2022-04-07 Delta Galil Industries Ltd. Automated knitting system and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101709530B (zh) * 2009-10-29 2012-04-25 周益民 毛条喂入式针织人造毛皮两色镂空提花花型织造方法
JP2020193410A (ja) * 2019-05-28 2020-12-03 プラスナイロン株式会社 編成方法、編成機及び編成組織

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2022871A (en) * 1978-06-03 1979-12-19 Sipra Patent Beteiligung Production of knitted or woven fabric
US4495560A (en) * 1980-07-09 1985-01-22 Kabushiki Kaisha Toyota Chuo Kenkyusho Fluctuating drive system
JPH062280A (ja) * 1991-09-09 1994-01-11 Toshimitsu Musha 人工革調表皮材の製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2022871A (en) * 1978-06-03 1979-12-19 Sipra Patent Beteiligung Production of knitted or woven fabric
US4495560A (en) * 1980-07-09 1985-01-22 Kabushiki Kaisha Toyota Chuo Kenkyusho Fluctuating drive system
JPH062280A (ja) * 1991-09-09 1994-01-11 Toshimitsu Musha 人工革調表皮材の製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 9406, Derwent World Patents Index; AN 94-045881 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1878822A1 (de) * 2006-07-12 2008-01-16 Ganzoni Management AG Verfahren zum Angeben von Zuständen zu den Maschen eines Gewebes
WO2022070188A1 (en) * 2020-10-01 2022-04-07 Delta Galil Industries Ltd. Automated knitting system and method

Also Published As

Publication number Publication date
KR950032781A (ko) 1995-12-22
JP2651894B2 (ja) 1997-09-10
JPH07324258A (ja) 1995-12-12
DE69507194T2 (de) 1999-09-02
HK1011061A1 (en) 1999-07-02
EP0684330B1 (de) 1999-01-13
KR100218993B1 (ko) 1999-09-01
CN1061111C (zh) 2001-01-24
CN1112616A (zh) 1995-11-29
DE69507194D1 (de) 1999-02-25

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