EP2292820B1 - Procédé et système de conception pour détermination d'une jauge d'article tricoté - Google Patents

Procédé et système de conception pour détermination d'une jauge d'article tricoté Download PDF

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Publication number
EP2292820B1
EP2292820B1 EP09773315.8A EP09773315A EP2292820B1 EP 2292820 B1 EP2292820 B1 EP 2292820B1 EP 09773315 A EP09773315 A EP 09773315A EP 2292820 B1 EP2292820 B1 EP 2292820B1
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European Patent Office
Prior art keywords
stitches
needles
height
size
knitting
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EP09773315.8A
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German (de)
English (en)
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EP2292820A1 (fr
EP2292820A4 (fr
Inventor
Yoshinori Shimasaki
Manabu Yui
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Shima Seiki Mfg Ltd
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Shima Seiki Mfg Ltd
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B37/00—Auxiliary apparatus or devices for use with knitting machines
    • D04B37/02—Auxiliary apparatus or devices for use with knitting machines with weft knitting machines
    • 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
    • D04B1/22—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 specially adapted for knitting goods of particular configuration
    • D04B1/24—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 specially adapted for knitting goods of particular configuration wearing apparel
    • D04B1/246—Upper torso garments, e.g. sweaters, shirts, leotards
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B7/00—Flat-bed knitting machines with independently-movable needles
    • D04B7/24—Flat-bed knitting machines with independently-movable needles for producing patterned fabrics
    • D04B7/26—Flat-bed knitting machines with independently-movable needles for producing patterned fabrics with colour patterns

Definitions

  • the present invention relates to the determination of the number of stitches for a knitted article. More specifically, the present invention relates to determining the number of stitches in the width direction, in other words, the knitting width or the number of needles, as well as the number of stitches in the height direction, in other words, the number of knitting courses, to produce a knitted article in approximately the target size.
  • Patent Document 1 JP 2676182
  • the term "gauge” means the number of stitches per width or height of a knitted article, and, "stitches/cm", for example, is used as the unit length thereof.
  • the plurality of texture samples are knitted together under a different knitting condition, to select the optimal texture sample.
  • the knitting width is constant.
  • the number of stitches per width or height of the selected sample is measured to determine the gauges of the knitted fabrics.
  • the width and height of the knitted article are specified based on pattern data of the target knitted article.
  • the width is multiplied by the gauge in the width direction, to obtain the number of needles.
  • the height is obtained.
  • Patent Document 1 alone does not always determine optimal gauges. Without the optimal gauges, the knitted article cannot fit into a predetermined size, and consequently, the number of knitting courses needs to be increased or decreased in accordance with the knitting data after knitting the actual article. Especially when obtaining a sweater by joining tubular knitted fabrics together seamlessly, the sleeves, bodies, and other parts with different knitting widths are knitted simultaneously. For this reason, the knitting widths of the texture samples are significantly different from the knitting widths of these parts, and, consequently, the optimal gauge of each part cannot be established. What was discovered by the inventors is that the gauges of the knitted fabrics in the height direction change depending on the knitting widths, even if the other conditions stay the same. In addition, the gauges of the knitted fabrics in the width direction also change depending on the knitting width, although the impact of the knitting width is small.
  • Patent Document 1 JP 2676182 , having family member EP0652317 .
  • An object of the present invention is to be able to determine the number of knitting courses, and the number of needles, in other words, the knitting width, in order to produce a knitted article in approximately the target size.
  • the present invention is a method for converting pattern data of a knitted article into the number of stitches to be knitted using a flat knitting machine, the method having: a knitting step of knitting a plurality of samples, which are different in the number of needles, by using the flat knitting machine; a measuring step of measuring the size of stitches of each sample in at least a height direction; a step of obtaining a relationship between the number of needles of each sample and the size of the stitches thereof in the height direction; and a stitch number determination step of determining the number of knitting courses for a target height in the pattern data, on the basis of the obtained relationship between the number of needles of each sample and the size of the stitches thereof in the height direction, as well as a target width in the pattern data.
  • the present invention is a system for converting pattern data of a knitted article into the number of stitches to be knitted using a flat knitting machine, the system having: means for obtaining a relationship between the number of needles and the size of stitches in a height direction of each of a plurality of samples, which are different in the number of needles, on the basis of an input value of the number of needles and an input value of at least the size of the stitches in the height direction; means for storing the obtained relationship; and stitch number determination means for determining the number of knitting courses for a target height in the pattern data, on the basis of the stored relationship and a target width in the pattern data.
  • a program for converting pattern data of a knitted article into the number of stitches to be knitted using a flat knitting machine, the program causing a computer to function as: means for obtaining a relationship between the number of needles and the size of stitches in a height direction of each of a plurality of samples, which are different in the number of needles, on the basis of an input value of the number of needles and an input value of at least the size of the stitches in the height direction; means for storing the obtained relationship; and stitch number determination means for determining the number of knitting courses for a target height in the pattern data, on the basis of the stored relationship and a target width in the pattern data.
  • the size of the stitches in the height direction is dependent upon the number of needles, in other words, the knitting width.
  • the relationship between the size of the stitches in the height direction and the number of needles can be obtained by knitting the plurality of samples that are different in the number of needles.
  • the pattern data is used for specifying the target height and target width for each of the parts of the knitted article, and the impact of the number of needles on the size of stitches in the width direction (width size) is smaller than its impact on the size in the height direction (height size). Therefore, the target width is converted into the number of needles by means of an appropriate technique.
  • the number of knitting courses necessary is defined based on the target height for each part of the knitted article and the relationship between the size of the stitches in the height direction and the number of needles.
  • the impact of the number of needles on the size of the stitches in the height direction can be corrected, and consequently parts in a desired height can be knitted.
  • the plurality of samples may be connected to one another by excess yarn.
  • the size of the stitches in the height direction may be obtained by, for example, measuring the number of stitches per predetermined height length or by measuring the total height of a predetermined number of stitches. Since a known method is used as the method for knitting the samples, the design device and the design program may not be involved in creating the knitting data of the samples.
  • the pattern data is used for specifying the shape and size of the knitted article, the size being the height and the width.
  • the present invention can correct the impact of the number of needles on the size of the stitches in the height direction and knit a knitted article with a height according to approximate pattern data.
  • the step of obtaining a relationship obtain the relationship between the number of needles of each sample and the size of the stitches thereof in the height direction, as a height function expressing the dependence of the size of the stitches in the height direction upon the number of needles.
  • the measuring step measure the size of the stitches in the height direction and the size thereof in a width direction in each of the plurality of samples, that the step of obtaining the relationship obtain the height function and a width function expressing the dependence of the size of the stitches in the width direction upon the number of needles, and that the stitch number determination step determine, from the height function and the width function, the number of knitting courses for the target height, as well as the number of needles for the target width in the pattern data.
  • FIGs. 1 to 4 show an embodiment.
  • reference numeral 2 represents a design system that has a color monitor 4, input keyboard 6, and a mouse 8, and is connected to the internet by a LAN, which is not shown.
  • the design system 2 is also provided with a disc driver that can be read from a CD-ROM or other storage medium, and comprises an appropriate computer.
  • Reference numeral 10 represents a flat knitting machine having two or four needle beds.
  • Reference numeral 16 represents a finishing apparatus that carries out, for example, cleaning, fulling, or steam processing.
  • a size measuring step 18 measures the width and height, or the width and length, of test samples 12 to 14 knitted using the flat knitting machine 10.
  • the measured width and height of each of the plurality of samples are input to a correction function generating unit 20 of the design system 2.
  • the correction function generating unit 20 generates and stores therein a height function expressing the size of the stitches in a height direction as a function of the number of needles, as well as a width function expressing the size of stitches in a width direction as a function of the number of needles, the functions being obtained based on the height and width of each of the plurality of samples.
  • Each of these functions expresses a combination of knitting conditions, such as a target loop length per stitch, the type of yarn including the material and thickness of the yarn, and the finished style.
  • a height direction gauge and width direction gauge of a knitted fabric of each sample may be input.
  • whether to use the width or height of each sample or whether to use a gauge indicating the reciprocal of the size of stitches in order to express the size of the stitches is arbitrary.
  • the size in the height direction and the size in the width direction are input in order to generate the height function and the width function.
  • the size in the height direction changes significantly depending upon the number of needles, it is not necessary to generate the width function.
  • a design unit 19 of the design system 2 designs a knitted article based on the inputs from the keyboard 6, mouse 8 or LAN that is not shown. There are two stages in designing the knitted article. In the first stage, the size of each part is input in the form of the height and width. The sizes input in this stage are specified by unit length in cm or inch, and the data obtained in this stage is called "pattern data".
  • the design unit 19 then converts the pattern data into design data of the knitted article, or converts the design data into knitting data that can be processed immediately by the flat knitting machine 10. In this process, the width and height of each part are converted into the knitting width of each part, in other words, the number of needles to be used in knitting, and into the number of knitting courses of each part, based on the height function and the width function.
  • the design unit 19 also outputs the knitting data on the test samples 12 to 14 to the flat knitting machine 10 and knit these samples 12 to 14.
  • the test samples 12 to 14 are common in, for example, the number of knitting courses and different in the number of needles. Each of the test samples 12 to 14 is in the shape of, for example, a rectangle but may be in a different shape.
  • the same type of yarn is used in the test samples 12 to 14 under the same knitting conditions.
  • the target loop length per stitch in the test samples 12 to 14 is also the same, as well as the finishing conditions obtained by the finishing apparatus 16.
  • the design unit 19 outputs new knitting data on the test samples 12 to 14.
  • the design system 2 and the flat knitting machine 10 may be connected by the LAN, or may be connected manually by using a floppy disk (registered trademark) or the like.
  • Fig. 2 shows an example of the height function and the width function, wherein the horizontal axis represents the number of needles and the vertical axis represents a height gauge X and horizontal gauge Y, both of which represent the number of stitches per centimeter.
  • the height function is shown by a curve and the width function by a straight line in Fig. 2 , either function may be shown by a curve or straight line.
  • These functions may be stored as functions expressing the number of needles as variables, or may be stored in the form of a table having the number of needles as the heading.
  • the data shown in Fig. 2 are obtained when a group of 200 knitting courses was knitted with wool yarn with a loop length per loop of 6.0 mm by a flat knitting method using a flat knitting machine having twelve needles per inch.
  • the data are also based on measurement values obtained when the steam processing and cleaning/drying are carried out as the finishing processing.
  • the gauges are obtained based on the knitting widths, or, in other words, the number of stitches per predetermined length is obtained, and the obtained gauge is applied to the entire knitted fabrics.
  • the optimal gauges are not always obtained if the knitting widths change.
  • one of the characteristics of the present invention is to obtain the relationship between the knitting width of each knitted fabric and the gauge or the size of the stitches, to establish the optimal gauges that correct the impact of the knitting widths.
  • Fig. 2 although the number of knitting courses of each test sample is constantly two hundred, the same result as that shown in Fig. 2 was obtained with a hundred knitting courses or three hundred knitting courses, for example. Specifically, the number of needles is the factor for determining the actual gauge, or the size of the stitches.
  • Fig. 3 shows a gauge correction algorithm. Correction here means to correct the impact of the number of needles during the step of converting the size in the pattern data into the number of knitting courses or the number of needles in each part of each knitted fabric.
  • the design system 2 stores the data, such as the knitting conditions of each knitted fabric, the type of yarn including the thickness and material of the yarn, and the finishing conditions.
  • the design system 2 also stores the height function and the width function with respect to a combination of these data items.
  • the height function or width function is the function that expresses a combination of the knitting conditions, the type of yarn, and the finishing conditions. However, more approximate functions may be used.
  • the correction function generating unit 20 outputs, to the design unit 19, information indicating that a new test sample is required, and then the design unit 19 generates the knitting data on the test samples 12 to 14.
  • the knitting conditions, the finishing conditions, and the type of yarn are used in the actual production of a knitted article.
  • the flat knitting machine 10 uses these conditions to knit, for example, the three types of test samples 12 to 14 that are different in the number of needles. These samples 12 to 14 are subjected to the same finishing as the actual knitted article by using the finishing apparatus 16, to manually measure the width and the height of each test sample.
  • the obtained measurement results are input to the correction function generating unit 20.
  • the width and the height of each knitted fabric may be input directly or may be input after converting them into the number of stitches per length, or the gauge.
  • the correction function generating unit 20 generates the height function and the width function shown in Fig. 2 on the basis of the input data, and stores these functions along with the type of yarn, the knitting conditions and the finishing conditions.
  • the design unit 19 obtains the number of knitting courses and needles required in the height and width of each part in the pattern data. Subsequently, the actual knitted article is knitted based on the obtained number of knitting courses and needles. In this manner, a knitted article in approximately the target size can be produced.
  • the program with which the design system 2 executes the processes shown in Fig. 3 is the knit design program of the embodiment, which is supplied to the design system 2 via a storage medium such as a CD-ROM, or via a carrier wave.
  • FIG. 4 shows how the height and width of each part are determined.
  • a knitted article 40 shown in Fig. 4 is constituted by a front body 41, rear body that is not shown, and sleeves 44, 45.
  • Reference numeral 42 represents a rib hem and reference numeral 46 a cuff, which are both subjected to rib knitting.
  • the front body 41 has therein a pattern 43 having different colors, which is knitted by the same type of yarn. Knitting width X1 and height Y1 of the front body are defined as shown in Fig. 4 , for example. Width X2 and height Y2 of each of the sleeves 44, 45 are defined as shown in Fig. 4 .
  • the knitting width X2 is the intermediate value between the value of the armhole and the value of the cuff 46.
  • the knitted article 40 is knitted tubularly, tubular knitted fabrics with different knitting widths are knitted as the test samples.
  • Fig. 4 illustrates an example of tubular knitting
  • the total of four parts of the front body, the rear body, and the right and left sleeves of the knitted article 40 can be knitted integrally.
  • the test samples are knitted into a flat knitted fabric instead of a tube, many times with different knitting widths.
  • the number of knitting courses and the number of needles of a knitted article can be determined by correcting the impact of the number of needles on the size of stitches. Therefore, a knitted article in the size in the pattern data can be knitted more easily.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Claims (4)

  1. Procédé pour déterminer le nombre de mailles pour un objet tricoté (40) lors de la conversion de données de motif d'un objet tricoté (40) en le nombre de mailles à tricoter en utilisant une machine à tricoter à plat (10), le procédé étant caractérisé en ce qu'il comprend :
    une étape de tricotage consistant à tricoter une pluralité d'échantillons (12, 13, 14), qui sont différents en ce qui concerne le nombre d'aiguilles, en utilisant la machine à tricoter à plat (10) ;
    une étape de mesure consistant à mesurer la taille de mailles de chaque échantillon (12, 13, 14) dans au moins une direction de hauteur ;
    une étape consistant à obtenir une relation entre le nombre d'aiguilles de chaque échantillon (12, 13, 14) et la taille des mailles de celui-ci dans la direction de hauteur ; et
    une étape de détermination de nombre de mailles consistant à déterminer le nombre de courses de tricotage pour une hauteur cible dans les données de motif, sur la base de la relation obtenue entre le nombre d'aiguilles de chaque échantillon (12, 13, 14) et la taille des mailles de celui-ci dans la direction de hauteur, ainsi que d'une largeur cible dans les données de motif.
  2. Procédé pour déterminer le nombre de mailles pour un objet tricoté (40) selon la revendication 1, caractérisé en ce que l'étape consistant à obtenir une relation obtient la relation entre le nombre d'aiguilles de chaque échantillon (12, 13, 14) et la taille des mailles de celui-ci dans la direction de hauteur, sous la forme d'une fonction de hauteur exprimant la dépendance de la taille des mailles dans la direction de hauteur en fonction du nombre d'aiguilles.
  3. Procédé pour déterminer le nombre de mailles pour un objet tricoté (40) selon la revendication 2, caractérisé en ce que l'étape de mesure réalise une mesure de la taille des mailles dans la direction de hauteur et de la taille de celles-ci dans une direction de largeur dans chacun de la pluralité d'échantillons (12, 13, 14),
    en ce que l'étape consistant à obtenir la relation obtient la fonction de hauteur et une fonction de largeur exprimant la dépendance de la taille des mailles dans la direction de largeur en fonction du nombre d'aiguilles, et
    en ce que l'étape de détermination de nombre de mailles détermine, à partir de la fonction de hauteur et de la fonction de largeur, le nombre de courses de tricotage pour la hauteur cible, ainsi que le nombre d'aiguilles pour la largeur cible dans les données de motif.
  4. Système de conception pour un objet tricoté (40) pour convertir des données de motif de l'objet tricoté (40) en le nombre de mailles à tricoter en utilisant une machine à tricoter à plat (10), le système de conception étant caractérisé en ce qu'il comprend :
    des moyens pour obtenir une relation entre le nombre d'aiguilles et la taille des mailles dans une direction de hauteur de chacun d'une pluralité d'échantillons (12, 13, 14), qui sont différents en ce qui concerne le nombre d'aiguilles, sur la base d'une valeur donnée du nombre d'aiguilles et d'une valeur donnée d'au moins la taille des mailles dans la direction de hauteur ;
    des moyens pour mémoriser la relation obtenue ; et
    des moyens de détermination de nombre de mailles pour déterminer le nombre de courses de tricotage pour une hauteur cible dans les données de motif, sur la base de la relation mémorisée et de la largeur cible dans les données de motif.
EP09773315.8A 2008-07-03 2009-06-19 Procédé et système de conception pour détermination d'une jauge d'article tricoté Active EP2292820B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008174547 2008-07-03
PCT/JP2009/061174 WO2010001737A1 (fr) 2008-07-03 2009-06-19 Procédé, système de conception et programme de conception pour détermination d'une jauge d'article tricoté

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EP2292820A1 EP2292820A1 (fr) 2011-03-09
EP2292820A4 EP2292820A4 (fr) 2015-03-04
EP2292820B1 true EP2292820B1 (fr) 2016-03-16

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EP (1) EP2292820B1 (fr)
JP (1) JP5414672B2 (fr)
CN (1) CN102084049B (fr)
WO (1) WO2010001737A1 (fr)

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KR101356987B1 (ko) * 2009-11-26 2014-01-29 가부시키가이샤 시마세이키 세이사쿠쇼 니트 디자인 장치와 디자인 방법, 디자인 프로그램
CN110485042B (zh) * 2019-08-14 2021-02-09 江南大学 一种二维纸样转换三维全成形服装的针织纸样的方法

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JPS5530477A (en) * 1978-08-25 1980-03-04 Sharp Kk Electronic control apparatus of knitting machine
JP2676182B2 (ja) * 1993-11-08 1997-11-12 株式会社島精機製作所 ニット製品の生産方法
JP2005015958A (ja) * 2003-06-26 2005-01-20 Shima Seiki Mfg Ltd 編地見本の作成方法、ニットデザイン方法、糸径測定装置、及び編地見本の作成装置
TW200738928A (en) * 2006-04-07 2007-10-16 Merry Far Knitting Co Ltd Color image manufacturing method for jacquard towel

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Publication number Publication date
EP2292820A1 (fr) 2011-03-09
JP5414672B2 (ja) 2014-02-12
CN102084049B (zh) 2012-07-18
WO2010001737A1 (fr) 2010-01-07
CN102084049A (zh) 2011-06-01
JPWO2010001737A1 (ja) 2011-12-15
EP2292820A4 (fr) 2015-03-04

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