EP0506322B1 - Verfahren zum regulierbar Einstellen von Strickgarnmengen - Google Patents

Verfahren zum regulierbar Einstellen von Strickgarnmengen Download PDF

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Publication number
EP0506322B1
EP0506322B1 EP92302483A EP92302483A EP0506322B1 EP 0506322 B1 EP0506322 B1 EP 0506322B1 EP 92302483 A EP92302483 A EP 92302483A EP 92302483 A EP92302483 A EP 92302483A EP 0506322 B1 EP0506322 B1 EP 0506322B1
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EP
European Patent Office
Prior art keywords
amount
knit fabric
length
course
knitting
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.)
Expired - Lifetime
Application number
EP92302483A
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English (en)
French (fr)
Other versions
EP0506322A1 (de
Inventor
Yasukazu Nishitani
Sadamu Nakahata
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
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Shima Seiki Mfg Ltd
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Publication date
Application filed by Shima Seiki Mfg Ltd filed Critical Shima Seiki Mfg Ltd
Publication of EP0506322A1 publication Critical patent/EP0506322A1/de
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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
    • D04B15/32—Cam systems or assemblies for operating knitting instruments

Definitions

  • the present invention relates to a method of controllably adjusting the amount of knitting yarns in process of composing a variety of knits with a flat knitting machine by properly controlling stitches of respective courses constant in an identical knit so that the amount of available knitting yarns can properly be adjusted into a predetermined length (see EP-A-0 485 005).
  • the data "Si" of respective courses “i” of the sampled knit fabric are subject to a comparison with a course data "Ci" on the length of knitting yarns available for respective courses "i” of the actually knit fabric via a comparator before permitting the CPU to identify whether stitch cam should be corrected or not by detection of the presence or absence of a comparative numerical value E in a predetermined range.
  • the invention has been achieved to fully solve those technical problems cited above.
  • the object of the invention is to provide a novel method of controllably adjusting the amount of knitting yarns while operating a flat knitting machine.
  • the method proposed by the invention permits the control unit to effectively execute comparison of highly reliable data without decreasing the rounds of execution of comparison of data from that of the conventional practice so that the hand of each knit and the consumable amount of knitting yarns can properly be held constant.
  • the method embodied by the invention sequentially and repatedly executes those functional processes including the following: Initially, the control unit stores data on a predetermined amount X or an amount Ms of integrated yarn length of the length Si of available knitting yarns when the amount Ms ever exceeds the predetermined amount X in conjunction with the length Si of those available knitting yarns in each course "i" of a sampled knit fabric knitted by a flat knitting machine. Next, the control unit also stores data on an amount Mc of integrated yarn length Ci corresponding to the predetermined amount X in conjunction with the length Ci of those available knitting yarns of each course "i" of the actually knitted fabric having the composition identical to that of the sampled knit fabric.
  • control unit comparatively executes an arithmetic operation to make a comparison between the amount Ms of integrated yarn length of knitting yarns available for the sampled knit fabric and the other amount Mc of integrated yarn length of the actually knit fabric, and then, if the compared value E were less than or more than a predetermined range, then the control unit corrects stitch cam.
  • control unit subtracts a predetermined amount "m" from both the amount Ms of integrated yarn length of the sampled knit fabric and the other amount Mc of integrated yarn length of the actually knitted fabric.
  • control unit adds the length Si of knitting yarns of each course "i" of the sampled knit fabric to the amount Ms of integrated yarn length remaining from the subtraction of the predetermined amount "m” (i.e., Ms - m) and also to the amount Mc of integrated yarn length of the actually knitted fabric (i.e., Mc - m), and then, the control unit stores an amount Msn of integrated yarn length at the moment when the amount Msn exceeds the predetermined amount X.
  • control unit also adds up the length Ci of knitting yarns of each course "i" of the actually knitted fabric having the composition identical to that of the sampled knit fabric to the amount (Mc - m) of integrated yarn length remaining from the subtraction of the predetermined amount "m”, and then, the control unit stores the amount msn of integrated yarn length of the predetermined length X.
  • the control unit comparatively executes an arithmetic operation to make a comparison between the amount msn of integrated yarn length of the sampled knit fabric and the amount mcn of integrated yarn length of the actually knitted fabric. In this case, if the compared value E were less than or more than a predetermined range, then the control unit properly corrects stitch cam.
  • control unit executes a comparative arithmetic operation between the amount Ms and the amount Mc of integrated yarn length of a predetermined amount X in a single course or in a plurality of corresponding courses of the sampled knit fabric and the actually knitted fabric before eventually determining whether stitch cam should be corrected, or not.
  • the control unit integrates the amounts (Ms - m and Mc - m) of integrated yarn length calculated by subtracting the predetermined amount "m” from the amounts (Ms and Mc) of integrated yarn length of the sampled knit fabric and the actually knit fabric in relation to the amounts (Msn and Mcn) of integrated yarn length of the sampled knit fabric and the actually knitted fabric until the predetermined amount is eventually reached.
  • the control unit executes an arithmetic operation to make comparison between the amount Msn and the amount Mcn of integrated yarn length of the sampled and the actually knitted fabric. If the compared value E were less than or more than a predetermined range, then the control unit properly corrects stitch cam.
  • the knitting system embodied by the invention sequentially and repeatedly executes those comparative arithmetic operations in order to determine whether stitch cam should be corrected, or not.
  • the knitting system embodied by the invention initially executes a comparative arithmetic operation to make comparisons of the predetermined amount of integrated yarn length in corresponding locations of the sampled knit fabric and the actually knitted fabric before eventually determining whether stitch cam should be corrected or not. Thenceforth, the control unit again integrates the amount of integrated yarn length resulted from the subtraction of a predetermined amount of the knit-yarn length from those amounts of integrated yarn length previously applied to the comparative arithmetic operation against the predetermined length of consumable yarns.
  • the control unit again executes a comparative arithmetic operation to make comparison between those predetermined amounts of integrated yarn length of the sampled knit fabric and the actually knitted fabric before eventually determining whether stitch cam should be corrected, or not.
  • the knitting system embodied by the invention sequentially and repeatedly follows up serial processes and judgements needed for correcting stitch cam.
  • the control unit makes up comparative data by means of the length of a predetermined amount of yarns without making comparison between each course, the resultant comparative data are extremely reliable to permit the control unit to more precisely determine whether stitch cam should be corrected, or not.
  • the knitting system embodied by the invention securely produces a large amount of identical knits containing more stable hand.
  • all the knitting yarns available for composing each knit can maintain constant length to some extent.
  • Fig. 1 schematically designates an overall block diagram of the knitting yarn control system according to an embodiment of the invention.
  • Fig. 2 presents an operation flowchart available for storing data on the length of knitting yarns per course based on a sampled knit fabric.
  • Fig. 3 presents an operation flowchart drawn out of the block diagram shown in Fig. 1. Functional operation of the control unit shown in Fig. 1 is described below.
  • the control unit receives data on the lengths of respective knitting courses. More particularly, the control unit receives data on the amount Si of knitting yarns available for composing a sampled knit fabric and the other data on the lengths of respective courses of an actually knitted fabric, in other words, it receives the amount Ci of those knitting yarns available for composing the actually knitted fabric.
  • a memory unit of the control unit stores the data Si on the lengths of respective knitting courses of the sampled knit fabric via a separator.
  • the first integrator 1 integrates the length data Si of each course "i" of the sampled knit fabric.
  • the first comparator 1 makes a comparison between an integrated data S (which is substantially the amount Ms of integrated yarn length) and a numerical value 30m designated for the predetermined amount X. If the integrated data S(the amount Ms) exceeds 30m, then, the first comparator 1 transmits a signal to the second comparator 2 so that the integrated data S can be compared to a data Mc on the actually knitted fabric.
  • the memory unit transmits a comparative data consisting of the above-identified data Ci on the lengths of respective courses of the actually knitted fabric to the second integrator 2 via the separator.
  • the seccond integrator 2 sequentially integrates the data Ci on the length of each course.
  • the first integrator 1 transmits the integrated data S (the amount Ms) of the sampled knit fabric to the second comparator 2 via the first comparator 1.
  • the first comparator 1 transmits an integrated course synchronizing signal to a gate on the part of the actually knit fabric. The gate then transmits the data C integrated by the second integrator 2 to the second comparator 2.
  • the second comparator 2 executes a comparative arithmetic operation to make comparison between the integrated data S (the amount Ms) of the sampled knit fabric and the other integrated data C (the amount Mc) of the actually knitted fabric. If the comparative ratio were out of a predetermined range, then, the second comparator 2 delivers a stitch-cam control instruction to the output unit to permit the stitch-cam controller to properly control the stitch cam.
  • the second comparator 2 subtracts 10m of the predetermined amount from the integrated data S (the amount Ms) of the sampled knit fabric and the other integrated data C (the amount Mc) of the actually knitted fabric. In this case, actually, the second comparator 2 subtracts "m1" of integrated yarn length exceeding the predetermined amount "m” up to the course P of the sampled knit fabric and also subtracts "m2" of integrated yarn length of those courses corresponding to those being present up to the course P of the sampled knit fabric. More particularly, if there were 9.8m of the integrated yarn length "m1" on the part of the sampled knit fabric, then, the yarn length covering 8 courses is subject to a subtraction process.
  • the integrated data (Ms - 10) related to the sampled knit fabric is fed back to the first integrator 1
  • the other integrated data (Mc - 10) related to the actually knitted fabric, in other words, the integrated data Mcn is fed back to the second integrator 2.
  • these first and second integrators 1 and 2 respectively execute integration of those length data Si and Ci of each course against those integrated data (Ms - 10) and (Mc - 10).
  • the second comparator 2 makes a comparison between these integrated data before eventually determining whether stitch cam should be corrected, or not. If the second comparator 2 determines to effect correction of stitch cam, then it generates a stitch-cam control instruction.
  • the second comparator 2 again subtracts 10m from those integrated data related to the sampled knit fabric and the actually knitted fabric compared to each other in the preceding process, and then, the second comparator 2 transmits the 10m-subtracted integrated data to the first and second integrators 1 and 2.
  • the control system sequentially and repeatedly executes those processes and judgements mentioned above until fully completing those processes for all the courses, and finally determines whether stitch cam should be corrected, or not.
  • the knitting yarn length control system embodied by the invention causes the control unit to initially subtract the predetermined yarn length amount "m" from those integrated data Ms and Mc related to the sampled knit fabric and the actually knitted fabric, and then, the control unit integrates those yarn-length data Si and Ci of respective knitting courses against those integrated data (Ms - m) and (Mc - m) remaining from subtraction of the predetermined amount "m” until a specific amount is eventually reached, and then, the control unit compares both the integrated data (Ms - m) and (Mc - m) before eventually determining whether stitch cam should be corrected, or not.
  • FIGS. 2 and 3 respectively present operation flowcharts which are more concretely explanatory of the functional processes executed by the control unit shown in Fig. 1.
  • sampling data comprising the length Si of knitting yarns available for each course "i" of the sampled knit fabric are sequentially and repeatedly stored in the address "i" of the memory unit until the yarn length Si covering all the courses are fully stored therein.
  • control unit again adds those "i" course data Si and Ci to those amounts Ms and Mc of integrated yarn length remaining from subtraction of 10m from those amounts Ms and Mc of integrated yarn length of the sampled knit fabric and the actually knitted fabric, and then sequentially and repeatedly executes those comparative arithmetic operations described above until fully completing those processes relevant to all the courses.
  • the above embodiment provisionally provides 30m of yarn length for the predetermined amount X and 10m of yarn length to make up the predetermined amount "m", respectively. Nevertheless, these values may optionally be varied into any numerical value as required.
  • the above embodiment solely expresses the yarn length by means of the predetermined amounts X and m, instead of these amounts, unit of yarn length may also be expressed by means of "course” as required. More particularly, design is also changeable to permit the control unit to sequentially execute comparative arithmetic operations by setting up the predetermined amount X to optional numbers of "course” (n-course) and the other predetermined amount "m” to optional numbers of "course” (y-course), respectively.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Fluid-Damping Devices (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Claims (1)

  1. Verfahren zum gesteuerten Einstellen des für einen Strickvorgang bei einer Flachbett-Strickmaschine verfügbaren Betrags an Strickfaden durch Vergleichen von zu der Länge des Strickfadens eines Probegestricks gehörenden Daten mit den entsprechenden Daten für die Länge eines tatsächlichen Gestricks, enthaltend:
    Integrieren der Längen (Si) des Fadens, die für jede Maschenreihe (i) eines Probegestricks erforderlich sind, um einen kumulativen Betrag (Ms) zu bilden, sowie Vergleichen dieses Betrages mit einem vorbestimmten Wert (X),
    Integrieren der Längen (Ci) des Fadens, die für jede Maschenreihe (i) eines tatsächlichen Gestricks erforderlich sind, um einen korrespondierenden Betrag (Mc) zu erhalten,
    Speichern der Beträge Ms und Mc, wenn Ms größer oder gleich X ist,
    Vergleichen der gespeicherten Werte von Ms und Mc sowie Korregieren des Senkers in dem Falle, daß der verglichene Wert (E) außerhalb eines vorbestimmten Bereiches liegt,
    Abziehen vorbestimmter Beträge (m1, m2) von den beiden Werten Ms und Mc, um neue Werte (Ms-m1, Mc-m2) der integrierten Fadenlängen zu bilden,
    Integrieren der Länge Si des Strickfadens bezüglich jeder Maschenreihe i des Probegestricks mit Ms-m1, um einen Gesamtbetrag Msn zu erhalten sowie Vergleichen mit X,
    Integrieren der Länge Ci des Strickfadens bezüglich jeder Maschenreihe i des tatsächlichen Gestricks mit Mc-m2, um einen Gesamtbetrag Mcn zu bilden,
    Speichern der Beträge Msn und Mcn, wenn Msn größer oder gleich X ist,
    Vergleichen der gespeicherten Werte von Msn und Mcn sowie Korregieren des Senkers in dem Fall, daß der verglichene Wert (E) außerhalb eines vorbestimmten Bereiches liegt, und
    Wiederholen der Schritte des Subtrahierens, des Integrierens, Speicherns und Vergleichens, so daß ein vorbestimmter Betrag an Strickfaden sicher in einem spezifischen Bereich gehalten werden kann.
EP92302483A 1991-03-29 1992-03-23 Verfahren zum regulierbar Einstellen von Strickgarnmengen Expired - Lifetime EP0506322B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3093147A JP2952391B2 (ja) 1991-03-29 1991-03-29 横編み編成における編糸量制御調整方法
JP93147/91 1991-03-29

Publications (2)

Publication Number Publication Date
EP0506322A1 EP0506322A1 (de) 1992-09-30
EP0506322B1 true EP0506322B1 (de) 1996-05-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP92302483A Expired - Lifetime EP0506322B1 (de) 1991-03-29 1992-03-23 Verfahren zum regulierbar Einstellen von Strickgarnmengen

Country Status (5)

Country Link
EP (1) EP0506322B1 (de)
JP (1) JP2952391B2 (de)
DE (1) DE4210378C2 (de)
ES (1) ES2087447T3 (de)
IT (1) IT1259362B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101569011B1 (ko) 2013-03-05 2015-11-13 가부시키가이샤 시마세이키 세이사쿠쇼 횡편기와 횡편기에서의 편성방법

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3909817C2 (de) * 1989-03-24 1998-05-20 Sipra Patent Beteiligung Einrichtung zum Ein- und Ausschalten wenigstens eines Funktionsteils einer Strickmaschine
KR100351612B1 (ko) 1994-09-02 2002-12-26 가부시키가이샤 시마세이키 세이사쿠쇼 횡편기에서의실길이제어방법과그장치
JP3085638B2 (ja) * 1995-01-23 2000-09-11 株式会社島精機製作所 横編機における糸長制御装置
DE19822321A1 (de) * 1998-05-19 1999-11-25 Stoll & Co H Verfahren zur Herstellung eines Gestrickstücks auf einer Strickmaschine
WO2008016028A1 (fr) * 2006-08-04 2008-02-07 Shima Seiki Manufacturing, Ltd. Appareil de commande de longueur de fil et procédé de commande et programme de commande dans un métier à mailles cueillies
EP2280104B1 (de) * 2008-05-02 2016-05-25 Shima Seiki Manufacturing., Ltd. Vorrichtung und programm zur standardmässigen einstellung der schlingenlänge bei einer flachstrickmaschine

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
US3490691A (en) * 1966-06-02 1970-01-20 Tokyo Shibaura Electric Co Proportional and integral action controller for sampled data control system
CS179185B1 (en) * 1975-07-28 1977-10-31 Pavel Bucek Apparatus for fabric density control in circular knitting machines
JPS52130351A (en) * 1976-04-26 1977-11-01 Tsubakimoto Chain Co Moving body position detector
JPS6262977A (ja) * 1985-09-11 1987-03-19 株式会社島精機製作所 度目調整方法
IT1246492B (it) * 1990-11-07 1994-11-19 Savio Spa Metodo per determinare la dimensione delle boccole di maglia nelle macchine per la produzioni di calzini

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101569011B1 (ko) 2013-03-05 2015-11-13 가부시키가이샤 시마세이키 세이사쿠쇼 횡편기와 횡편기에서의 편성방법

Also Published As

Publication number Publication date
JP2952391B2 (ja) 1999-09-27
ITTO920272A0 (it) 1992-03-27
DE4210378C2 (de) 2001-10-18
ES2087447T3 (es) 1996-07-16
DE4210378A1 (de) 1992-10-01
JPH0625953A (ja) 1994-02-01
IT1259362B (it) 1996-03-12
ITTO920272A1 (it) 1993-09-27
EP0506322A1 (de) 1992-09-30

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