EP3315642B1 - A plating-knitting method and a flat knitting machine for the method - Google Patents

A plating-knitting method and a flat knitting machine for the method Download PDF

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Publication number
EP3315642B1
EP3315642B1 EP17199054.2A EP17199054A EP3315642B1 EP 3315642 B1 EP3315642 B1 EP 3315642B1 EP 17199054 A EP17199054 A EP 17199054A EP 3315642 B1 EP3315642 B1 EP 3315642B1
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EP
European Patent Office
Prior art keywords
knitting
yarn
yarns
tension
face
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.)
Active
Application number
EP17199054.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3315642A1 (en
Inventor
Atsushi Mori
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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Application filed by Shima Seiki Mfg Ltd filed Critical Shima Seiki Mfg Ltd
Publication of EP3315642A1 publication Critical patent/EP3315642A1/en
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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
    • D04B15/70—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used in flat-bed 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
    • 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
    • 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
    • D04B15/06—Sinkers
    • 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
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/44—Tensioning devices for individual threads
    • 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
    • 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
    • D04B7/28—Flat-bed knitting machines with independently-movable needles for producing patterned fabrics with stitch patterns
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/01—Surface features
    • D10B2403/011—Dissimilar front and back faces
    • D10B2403/0114—Dissimilar front and back faces with one or more yarns appearing predominantly on one face, e.g. plated or paralleled yarns

Definitions

  • the present invention relates to a plating-knitting method where the allocation for the face and back yarns may be swapped and also a flat knitting machine for the method.
  • two knitting yarns are aligned and fed to knitting needles to form stitches comprising the two knitting yarns.
  • the two knitting yarns are fed from separate yarn feeders, and in the knitting direction, one yarn feeder leads the other.
  • the knitting yarn fed from the leading yarn feeder appears as the face yarn on the face of the knitted fabric
  • the knitting yarn fed from the following yarn feeder appears as the back yarn on the back of the knitted fabric.
  • the relation of the face and back yarns is determined according to the leading and following relation of the yarn feeders. Since knitting machines usually do not have a mechanism for swapping the relation of leading and following yarn feeders during knitting, it is difficult to swap the relation of the face and back yarns during knitting.
  • Patent Document 1 Japanese Utility Model Sho52-51444A ) describes to provide two yarn feeders in a single carrier and to make one of the yarn feeders capable of rocking in the direction of carrier movement.
  • the rockable yarn feeder is rocked backward when the carriage reverses so that the face and back relation of the yarns is kept the same as the previous course.
  • Patent Document 2 JP2016-176159A describes a method on a flat knitting machine with movable sinkers using the combination of trajectories of sinkers and knitting needles for swapping the order of the face and back yarns.
  • the trajectory of sinkers is kept constant, and the trajectory of knitting needles are changed from usual trajectory to another trajectory for swapping the order of the face and back yarns.
  • the object of the invention is to swap the relation of face and back yarns in plating-knitting during knitting by a novel means.
  • the plating-knitting method uses a knitting machine, aligns and feeds at least two knitting yarns from at least a yarn feeder of at least a carrier to knitting needles in at least a needle bed, such that one of said at least two knitting yarns appears on the face of a knitted fabric as a face yarn and the other of said at least two knitting yarns appears on the back of the knitted fabric as a back yarn.
  • the method discloses:
  • the flat knitting machine comprises at least a needle bed provided with knitting needles and sinkers arranged along the longitudinal direction of the needle bed; and at least a carrier having a yarn feeder for feeding at least two knitting yarns to the knitting needles in an aligned state, wherein said sinkers have guide surfaces for guiding said at least two knitting yarns.
  • the flat knitting machine is characterized by a tension control unit for controlling a tension applied to at least one of said at least two knitting yarns; and by said tension control unit being configured to swap an allocation of said at least two knitting yarns to a face yarn and a back yarn during movement of the carrier by changing said tension applied to said at least one yarn such that a yarn allocated to the face yarn has a greater tension than the other yarn allocated to the back yarn.
  • the knitting yarn with the greater tension (the face yarn) takes the lower position within the hook
  • the knitting yarn with the smaller tension (the back yarn) takes the higher position within the hook, and thus, the knitting yarn with the greater tension becomes the face yarn, and the knitting yarn with the smaller tension becomes the back yarn.
  • the knitting yarn with the greater tension moves towards the lower portion of the guide surface
  • the knitting yarn with the smaller tension moves towards the upper portion of the guide surface
  • the relation between the face and back yarns is reversed.
  • the inventor confirmed these facts with observing how the two aligned knitting yarns move by swapping the tensions. Namely, the knitting yarn with the greater tension moved downwards on the guide surface, the knitting yarn with the smaller tension moved upwards on the guide surface, and as a result, the relation of the face and back yarns was reversed.
  • the relation of the face and back yarns may be changed during knitting.
  • the yarn appearing on the face of the knitted fabric may be swapped, and so, desired patterns may be formed on plaiting-knitted fabrics.
  • the setting about which yarn is made the face and which yarn is made the back is called the allocation of knitting yarns to the face and back yarns.
  • Continuous tension controls are not necessary; it is enough that the tensions are controlled at least when the allocation to the face and back yarns is changed. Namely, when the same tension is applied to respective yarns, the allocation to the face and back yarns does not change. Therefore, the tensions may be changed only when the allocation is changed, and a common tension may usually be applied to respective knitting yarns. While the both tensions of yarns may be controlled, the tension to only one knitting yarn may be controlled and the tension to the other may be kept constant.
  • Fig. 1 shows a flat knitting machine 2 used in the embodiment.
  • Indicated by 4 is a needle bed, and the flat knitting machine 2 is provided with, for example, a pair of front and a back needle beds or four needle beds of front upper and front lower, and back upper and back lower.
  • Indicated by 6 is a carriage that manipulates the knitting needles in the needle beds 4. However, when each knitting needle is provided with a linear motor, the carriage 6 is not necessary.
  • the carriage 6 reciprocates along the longitudinal direction of the needle beds 4 (the left and right direction in Fig. 1 ), and an entraining unit 8 integral with the carriage 6 entrains carriers 11 provided with a yarn feeder 10 along rails 12.
  • the tension control unit 15 may be provided with additional elements such as rotary encoders for measuring the supplied lengths of the knitting yarns. Further, the switching mechanism for the tensions is arbitrary.
  • knitting yarns are supplied from the upper portion of the flat knitting machine 2; though they may be supplied from a side portion of the flat knitting machine. In the following example, two aligned knitting yarns are supplied; while three or more yarns may be supplied. However, when three or more knitting yarns are aligned and supplied, it is necessary to apply an enough greater tension to the face yarn and smaller tensions to the back yarns, and it is difficult to provide a tension difference between the back yarns. Therefore, the plural back yarns might appear uncontrollably on the back face of the knitted fabric, and the color of the back face might be mixed.
  • Fig. 2 shows the supply of, for example, two knitting yarns 24, 25 from a yarn feeder 10 to hooks 18 of the knitting needles.
  • the knitting direction (the course direction) is from the right to the left in Fig. 2 , and the knitting yarns fed from the yarn feeder 10 at a higher position are guided by a guide surface 22 at the tip of sinkers and are fed to the hooks 18. Further, the two knitting yarns 24, 25 are aligned and fed from, for example, one or two yarn feeders 10. Then, at positions just before the hooks 18, the knitting yarn with the greater tension appears at the lower position, and the knitting yarn with the smaller tension appears at the higher position.
  • one yarn feeder 10 supplies the knitting yarns 24, 25; however, separate two yarn feeders may supply the knitting yarns 24, 25 respectively.
  • a hook 18a has already returned in the needle bed 4 after forming a new stitch, and hooks 18b, 18c are returning in the needle bed in sequence after advancing to the trick gap.
  • the respective guide surfaces of the sinkers for guiding the knitting yarns to the hooks 18a, 18b, 18c are denoted by 22a, 22b, 22c respectively.
  • Fig. 3 shows the situations of the knitting yarns 24, 25 at the hook 18a and at the guide surface 22a just before changing the tensions to the knitting yarns 24, 25 or before the tension change influences them.
  • the knitting yarn 25 with the greater tension is compelled to take the shortest path from the yarn feeder to the hook 18a and takes the lower position at the guide surface 22a, and the knitting yarn 24 with the smaller tension takes the higher position at the guide surface 22a.
  • the knitting yarn 25 with the greater tension takes the lower position and becomes the face yarn
  • the knitting yarn 24 with the smaller tension takes the higher position and becomes the back yarn.
  • Fig. 4 shows the situation where the tensions have been switched so that the tension to the knitting yarn 24 becomes greater than that to the knitting yarn 25 and the tension change has influenced the knitting yarns at the hook 18c and the guide surface 22c.
  • the up-down relation between the knitting yarns 24, 25 changes at the guide surface 22c and within the hook 18c so that the knitting yarn 24 with the greater tension takes the lower position than the knitting yarn 25 with the smaller tension, and within the hook 18c the knitting yarn 24 takes the lower position and becomes the face yarn, and the knitting yarn 25 takes the higher position and becomes the back yarn.
  • the ratio of tensions applied to the two knitting yarns is, for example, two or more, preferably, not less than two and not more than 15, for preventing the excessive tensions from breaking the knitting yarns, and in particular, not less than two and not more than 10.
  • the greater tension was set to 40g/yarn
  • the smaller tension was 5g/yarn
  • the ration of the tensions was 8.
  • a knitting condition of the greater tension of 20g/yarn and the smaller tension of 5g/yarn allowed satisfactory knitting with correctly keeping the relation of the face and back yarns.
  • g/yarn is a unit indicating the tension for one knitting yarn.
  • one tension applied to one knitting yarn is controlled to take either a greater value or a smaller value, and the tension applied to the other knitting yarn may be fixed at the intermediate value.
  • the tension to the other knitting yarn may be kept nearly constant by a tension spring or the like without the feedback control or the like.
  • the yarns need, for example, about from 0,508 cm to 2, 54 cm (1/5 inch to 1 inch), before the relation of face and back yarns really reverses.
  • This length becomes longer when the distance between the tension control unit 15 and the yarn feeders 10 is longer and becomes shorter when the distance is shorter.
  • the controller in the knitting machine stores the lengths for various distances between them.
  • the difference in the tensions changes the up-down relation of the knitting yarns at the guide surface 22. While the same tensions are applied to the two knitting yarns, the up-down relation between the knitting yarns does not change. Therefore, the same tensions may usually be applied, the tension to the face yarn is made greater than that to the back yarn when the relation of the face and back yarns is to be changed, and the tensions to the two knitting yarns may be made equal after completely swapping the face and back yarns.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Knitting Of Fabric (AREA)
EP17199054.2A 2016-10-31 2017-10-27 A plating-knitting method and a flat knitting machine for the method Active EP3315642B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2016213361A JP6562890B2 (ja) 2016-10-31 2016-10-31 プレーティング編成方法及びそれに用いる横編機

Publications (2)

Publication Number Publication Date
EP3315642A1 EP3315642A1 (en) 2018-05-02
EP3315642B1 true EP3315642B1 (en) 2019-05-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP17199054.2A Active EP3315642B1 (en) 2016-10-31 2017-10-27 A plating-knitting method and a flat knitting machine for the method

Country Status (4)

Country Link
EP (1) EP3315642B1 (zh)
JP (1) JP6562890B2 (zh)
KR (1) KR101985818B1 (zh)
CN (1) CN108018645B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022158251A1 (ja) 2021-01-22 2022-07-28 株式会社島精機製作所 インバースプレーティング用補正データの生成方法、及び生成システム

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GB2559567B (en) * 2017-02-08 2022-06-22 Unmade Ltd A method of knitting a fabric using a knitting machine and a knitting machine
KR102232288B1 (ko) * 2019-07-22 2021-03-29 파이룽 머시너리 밀 코., 엘티디. 가변 얀 위치를 갖는 위편기 편직 구조
JP6696035B1 (ja) * 2019-07-29 2020-05-20 佰龍機械廠股▲ふん▼有限公司 編糸の位置が変更可能な緯編機編成構造
JP7425006B2 (ja) * 2020-02-17 2024-01-30 株式会社島精機製作所 編地の編成方法
TWI831107B (zh) * 2022-01-03 2024-02-01 佰龍機械廠股份有限公司 圓針織機結構
JP7408872B1 (ja) 2023-05-16 2024-01-05 佰龍機械廠股▲ふん▼有限公司 多色ジャカード両面編み物

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022158251A1 (ja) 2021-01-22 2022-07-28 株式会社島精機製作所 インバースプレーティング用補正データの生成方法、及び生成システム
KR20230132830A (ko) 2021-01-22 2023-09-18 가부시키가이샤 시마세이키 세이사쿠쇼 인버스 플레이팅용 보정 데이터의 생성방법 및 생성시스템

Also Published As

Publication number Publication date
KR101985818B1 (ko) 2019-06-04
CN108018645B (zh) 2021-02-26
JP6562890B2 (ja) 2019-08-21
JP2018071021A (ja) 2018-05-10
KR20180048368A (ko) 2018-05-10
EP3315642A1 (en) 2018-05-02
CN108018645A (zh) 2018-05-11

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