EP3165649B1 - Flachstrickmaschine mit festen platinen - Google Patents

Flachstrickmaschine mit festen platinen Download PDF

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Publication number
EP3165649B1
EP3165649B1 EP16197050.4A EP16197050A EP3165649B1 EP 3165649 B1 EP3165649 B1 EP 3165649B1 EP 16197050 A EP16197050 A EP 16197050A EP 3165649 B1 EP3165649 B1 EP 3165649B1
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EP
European Patent Office
Prior art keywords
needle
bed
support portion
linear
snap
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
EP16197050.4A
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English (en)
French (fr)
Other versions
EP3165649A1 (de
Inventor
Takuya Miyai
Hisatoshi Toguchi
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
Original Assignee
Shima Seiki Mfg 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 Shima Seiki Mfg Ltd filed Critical Shima Seiki Mfg Ltd
Publication of EP3165649A1 publication Critical patent/EP3165649A1/de
Application granted granted Critical
Publication of EP3165649B1 publication Critical patent/EP3165649B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B7/00—Flat-bed knitting machines with independently-movable needles
    • D04B7/04—Flat-bed knitting machines with independently-movable needles with two sets of needles
    • 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
    • D04B15/10—Needle beds
    • 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
    • D04B15/24—Sinker heads; Sinker bars
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B7/00—Flat-bed knitting machines with independently-movable needles

Definitions

  • the present invention relates to a flat knitting machine including fixed sinkers, and in particular, to measures for improving the accuracy of attaching the fixed sinkers.
  • Fig. 3 illustrates an existing flat knitting machine 1 including a plurality of fixed sinkers 2 that are arranged side by side at a front end portion of a needle bed 11.
  • Each of the fixed sinkers 2 includes a body 21 and a head 22.
  • the body 21 includes a fitting portion 23 at a rear end thereof and a curved portion 24, which is curved in a height direction, at a middle part thereof in the longitudinal direction.
  • the head 22 protrudes from a sinker-front-end support portion 25, which is located at a front end of the body 21, toward a needle-bed gap G (see Patent Literature 1).
  • the needle bed 11 includes a needle-bed-front-end support portion 12 and a snap-fit recess 13 in the front end portion thereof.
  • the needle-bed-front-end support portion 12 supports the sinker-front-end support portion 25 around an axis m of a wire 31, which extends in a direction in which the bodies 21 are arranged side by side, and allows the head 22 to swing in directions toward and away from a needle-bed gap center Ga.
  • the snap-fit recess 13 allows the fitting portion 23 at the rear end of the body 21 to be snap fitted thereto by using a spring force generated when the curved portion 24 of the body 21 is bent in the height direction in a state in which the sinker-front-end support portion 25 is supported around the axis m of the wire 31.
  • the height direction in which the curved portion 24 at a middle part of the body 21 in the longitudinal direction is curved, coincides with a direction in which the fitting portion 23 is snap fitted to the snap-fit recess 13.
  • Patent Literature 1 Japanese Patent No. 4348286
  • the snap-fit recess 13 is formed in the lower surface of the front end portion of the needle bed 11.
  • the snap-fit recess 13 allows the fitting portion 23 to be in contact with a bottom surface 131 and a front-end side surface 132 of the snap-fit recess 13 by using a spring force generated when the curved portion 24 of the body 21 is bent. In this case, even if the machining accuracies of the needle bed 11 and the fixed sinkers 2 are each within tolerance, the degree of contact between the fitting portion 23 and the front-end side surface 132 varies.
  • the position of the head 22 may deviate from a reference position that has been determined in design. Higher accuracy is required for the position of the head 22 of the fixed sinker 2, because the position serves as a reference when attaching the front and rear needle beds 11.
  • Prior art document DE 195 05 099 A1 discloses a flat knitting machine comprising needle beds with fixed sinkers and, additionally, with moveable holding boards of at least one needle bed which are controllable via control feet which are controlled by cams.
  • the flat knitting machine according to prior art document DE 11 2005 003021 T5 comprises fixed sinkers.
  • An object of the present invention is to provide a flat knitting machine that includes fixed sinkers and that allows the position of a head of each of the fixed sinkers, which serves as a reference when attaching front and rear needle beds, to be located close to a reference position with high accuracy.
  • a flat knitting machine is based on a flat knitting machine that includes fixed sinkers that are arranged side by side at a front end portion of a needle bed, each of the fixed sinkers including a body including a fitting portion at a rear end thereof and a curved portion at a middle part thereof in a longitudinal direction, and a head protruding from a front end of the body toward a needle-bed gap.
  • a needle-bed-front-end support portion is formed in the front end portion of the needle bed.
  • the needle-bed-front-end support portion supports a sinker-front-end support portion of each of the bodies around an axis of a wire, which extends in a direction in which the bodies are arranged side by side, and allows the head to swing around the axis of the wire in directions toward and away from a needle-bed gap center.
  • a snap-fit recess is formed in a lower surface of the front end portion of the needle bed.
  • the snap-fit recess allows the fitting portion at the rear end each of the bodies to be snap fitted to a bottom surface and a front-end side surface of the snap-fit recess by using a spring force generated when the curved portion of the body is bent in a state in which the sinker-front-end support portion is supported by the needle-bed-front-end support portion.
  • the flat knitting machine is characterized in that a linear-member support portion is formed in the front end portion of the needle bed, and the linear-member support portion opens toward the bodies and supports a linear member that is inserted in the direction in which the bodies are arranged side by side; and a contact portion of each of the bodies, which is located between the curved portion and a front end of the body and which contacts the linear member when the linear member is inserted into the linear-member support portion, is pressed toward the needle-bed gap center to swing the head around the axis of the wire in the direction away from the needle-bed gap center.
  • the linear-member support portion and the needle-bed-front-end support portion each open toward the needle-bed gap in the front end portion of the needle bed, and support surfaces of the support portions are parallel to each other.
  • the fitting portion includes an arc-shaped portion that makes point-contact with each of the bottom surface and the front-end side surface of the snap-fit recess.
  • a part of the body between the curved portion and the fitting portion is tapered so that a thickness of the part in an up-down direction decreases from the curved portion toward the fitting portion.
  • the head By pressing the contact portion of the body, which contacts the linear member that is inserted into the linear-member support portion of the needle bed, toward the needle-bed gap center by using the linear member, the head swings in the direction away from the needle-bed gap center and the position of the head relative to a reference position is stabilized.
  • the position of the head which serves as a reference when attaching the front and rear needle beds, can be made close to the reference position with high accuracy.
  • the linear-member support portion and the needle-bed-front-end support portion each open toward the needle-bed gap in the front end portion of the needle bed and support surfaces of the support portions are parallel to each other, the linear-member support portion and needle-bed-front-end support portion can be machined along the support surfaces from the needle-bed gap side. Therefore, the machining accuracies of the linear-member support portion and the needle-bed-front-end support portion can be improved.
  • the fitting portion includes the arc-shaped portion that makes point-contact with each of the bottom surface and the front-end side surface of the snap-fit recess
  • the fitting portion can make contact with each of the bottom surface and the front-end side surface of the snap-fit recess with high accuracy.
  • Fig. 1 is a side sectional view of a front end portion of one of needle beds of a flat knitting machine including fixed sinkers according to an embodiment of the present invention, in a state in which the direction of back-and-forth movement of knitting needles is substantially horizontal.
  • Fig. 2 is a side view illustrating a state before a fixed sinker is snap fitted to a snap-fit recess.
  • a flat knitting machine 1 includes a pair of front and rear needle beds 11 (only one of which is shown in the figures), so that transfer of knitted loops between the front and rear needle beds 11 can be performed.
  • a plurality of fixed sinkers 2 are arranged side by side.
  • Each of the fixed sinkers 2 includes a body 21 and a head 22 protruding from a front end of the body 21.
  • the body includes a curved portion 24, which is curved in a height direction, at a middle part thereof in the longitudinal direction.
  • the body 21 of each of the fixed sinkers 2 includes a fitting portion 23, which has a substantially rectangular shape, at a rear end thereof. In this case, a needle-bed gap center Ga extends in the vertical direction through the midpoint between the front and rear needle beds 11.
  • the needle-bed-front-end support portion 12 is a cut that has a substantially L-shaped cross section and that opens upward and toward the needle-bed gap G.
  • the needle-bed-front-end support portion 12 has a support surface 121, which extends toward the needle-bed gap G in a direction substantially parallel to a bottom surface of the needle bed 11 in the front end portion of the needle bed 11.
  • the sinker-front-end support portion 25 is supported by the needle-bed-front-end support portion 12 around the axis m of the first wire 31 so that the head 22 can swing in directions toward and away from the needle-bed gap center Ga.
  • the head 22 is allowed to swing around the axis m of the first wire 31 in directions toward and away from the needle-bed gap center Ga in a state in which a second wire 32, which has a circular cross section and which extends in the direction in which the bodies 21 of the fixed sinkers 2 are arranged side by side, is inserted into the head 22.
  • a snap-fit recess 13 is formed in a lower surface of the front end portion of the needle bed 11.
  • the fitting portion 23 of the body 21 is snap fitted to the snap-fit recess 13 in a state in which the sinker-front-end support portion 25 of the body 21 is supported by the needle-bed-front-end support portion 12 via the first wire 31.
  • the snap-fit recess 13 has a bottom surface 131, a front-end side surface 132, and a rear-end side surface 133.
  • the side surfaces 132 and 133 are respectively continuous with the front and the rear end of the bottom surface 131.
  • the fitting portion 23 is snap fitted to the bottom surface 131 and the front-end side surface 132 of the snap-fit recess 13 by using a spring force that is generated when the curved portion 24 is bent in a state in which the sinker-front-end support portion 25 is supported by the needle-bed-front-end support portion 12 via the first wire 31.
  • a third wire 33 which has a circular cross section and which extends in the direction in which the bodies 21 of the fixed sinkers 2 are arranged side by side, is inserted into a substantially central part of the fitting portion 23.
  • a linear-member support portion 14 is formed in a part of lower surface of the front end portion of the needle bed 11 located between the curved portion 24 and the sinker-front-end support portion 25 of the body 21.
  • the linear-member support portion 14 supports a linear member 34, which has a circular cross section and which is inserted in the direction in which the bodies 21 are arranged side by side.
  • the linear-member support portion 14 is a cut that has a substantially L-shaped cross section and that opens downward and toward the needle-bed gap G so as to open toward the body 21.
  • the first to third wires 31 to 33 and the linear member 34 may be made of steel, a high-strength resin, or a fiber-reinforced composite material.
  • the linear-member support portion 14 has a support surface 141, which extends toward the needle-bed gap G in a direction substantially parallel to the bottom surface of the needle bed 11 in the front end portion of the needle bed 11.
  • the support surface 141 and the support surface 121 of the needle-bed-front-end support portion 12 are parallel to each other.
  • the needle-bed-front-end support portion 12 and the linear-member support portion 14 can be simultaneously or independently machined respectively along the support surfaces 121 and 141 from the needle-bed gap G side, so that the accuracy of machining the needle-bed-front-end support portion 12 and the linear-member support portion 14 can be improved.
  • a contact portion 27 is a part of the body 21 that is located between the curved portion 24 of the body 21 and the sinker-front-end support portion 25 and that contacts the linear member 34 when the linear member 34 is inserted into a corner of the linear-member support portion 14.
  • the contact portion 27 is pressed toward the needle-bed gap center Ga (in a direction indicated by a solid-line arrow in Fig. 1 ) to suppress bending of the curved portion 24 and to swing the head 22 around the axis m of the first wire 31 in the direction away from the needle-bed gap center Ga (in a direction indicated by a solid-line arrow in Fig. 1 ).
  • the position of the head 22 relative to a reference position is stabilized. Therefore, the position of the head 22, which serves as a reference when attaching the front and rear needle beds 11, can be made close to a reference position with high accuracy.
  • a plurality of types of linear members 34 which have, for example, diameters of 0.9 ⁇ 0.02 ⁇ n mm (where n is a non-negative integer), are prepared.
  • the linear member 34 is selected from the plurality of types so that the contact portion 27 can be pressed toward the needle-bed gap center Ga to swing the head 22 around the axis m of the first wire 31 in the direction away from the needle-bed gap center Ga so as to move the head 22 closer to the reference position.
  • the fitting portion 23 includes an arc-shaped portion 26, which protrudes from a corner corresponding to a corner between the bottom surface 131 and the front-end side surface 132 of the snap-fit recess 13 and which makes point-contact with each of the bottom surface 131 and the front-end side surface 132 when the fitting portion 23 is snap-fitted into the snap-fit recess 13.
  • the fitting portion 23 can be in contact with each of the bottom surface 131 and the front-end side surface 132 of the snap-fit recess 13 with high accuracy.
  • An upper surface of a part of the body 21 between the curved portion 24 of the body 21 and the fitting portion 23 is slightly inclined so that the part of the body 21 is tapered in such a way that the thickness of the part in the up-down direction slightly decreases from the curved portion 24 toward the fitting portion 23.
  • the taper ratio of the part of the body 21 from the curved portion 24 to the fitting portion 23 is, for example, about 1/50 to 2/50, that is, the dimension of the part in the height direction decreases by 1 to 2 mm per 50 mm.
  • the taper ratio of the body 21 from the curved portion 24 to the fitting portion 23 is not limited to about 1/50 to 2/50.
  • the taper ratio may be appropriately set in accordance with the material of the fixed sinker or the value of stress that acts on the curved portion.
  • the fitting portion 23 tends to strongly contact the front-end side surface 132 even when the machining accuracies of the needle bed 11 and the fixed sinker 2 are both within tolerance.
  • the body 21 is strongly pulled toward the rear end, and the head 22 tends to tilt around the axis m of the first wire 31 so as to become closer to the needle-bed gap center Ga than the reference position is.
  • the head 22 which tends to move closer to the needle-bed gap center Ga, can be smoothly swung in the direction away from the needle-bed gap center Ga around the axis m of the first wire 31, and the position of the head 22 can be made close to the reference position with higher accuracy.
  • the fixed sinker 2 is used for the flat knitting machine 1 including the pair of front and rear needle beds 11.
  • the embodiment may be applied to a fixed sinker that is used for a flat knitting machine including upper and lower needle beds in at least one of a front portion and a rear portion thereof.
  • the embodiment may be applied to a plurality of fixed sinkers that are arranged side by side between knitting needles in a front end portion of a needle bed together with movable sinkers.

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

Claims (4)

  1. Flachstrickmaschine (1), umfassend:
    fixierte Platinen (2), die nebeneinander an einem vorderen Endteil eines Nadelbetts (11) angeordnet sind, wobei jede der fixierten Platinen (2) umfasst:
    einen Körper (21) einschließlich eines Passteils (23) an einem hinteren Ende und einem gekrümmten Teil (24) an einem mittleren Teil in einer Längsrichtung, und
    einen Kopf (22), der von einem vorderen Ende des Körpers (21) zu einem Nadelbettspalt (G) vorsteht,
    wobei ein Nadelbett-Vorderende-Halteteil (12) in dem vorderen Endteil des Nadelbetts (11) ausgebildet ist, wobei der Nadelbett-Vorderende-Halteteil (12) einen Platinen-Vorderende-Halteteil (25) jedes der Körper (21) um eine Achse (m) eines Drahts (31), der sich in einer Richtung erstreckt, in welcher die Körper (21) nebeneinander angeordnet sind, hält und gestattet, dass der Kopf (22) um die Achse (m) des Drahts (31) in Richtungen zu und weg von einer Nadelbettmitte (Ga) schwenkt, und
    wobei eine Schnapppassvertiefung (13) in einer unteren Fläche des vorderen Endteils des Nadelbetts (11) ausgebildet ist, wobei die Schnapppassvertiefung (13) erlaubt, dass der Passteil (23), der sich an dem hinteren Ende jedes der Körper (21) befindet, zu einer Bodenfläche (131) und einer Vorderendseitenfläche (132) der Schnapppassvertiefung (13) schnappt, wobei eine Federkraft genutzt wird, die erzeugt wird, wenn der gekrümmte Teil (24) des Körpers (21) in einem Zustand gebogen wird, in dem der Platinen-Vorderende-Halteteil (25) durch den Nadelbett-Vorderende-Halteteil (12) gehalten wird,
    wobei die Flachstrickmaschine (1) dadurch gekennzeichnet ist, dass:
    ein Linearglied-Halteteil (14) in dem vorderen Endteil des Nadelbetts (11) ausgebildet ist, wobei sich der Linearglied-Halteteil (14) zu den Körpern (21) öffnet und ein Linearglied (34) hält, das in der Richtung eingesteckt ist, in welcher die Körper (21) nebeneinander angeordnet sind, und
    ein Kontaktteil (27) jedes der Körper (21), der zwischen dem gekrümmten Teil (24) und einem vorderen Ende des Körpers (21) angeordnet ist und das Linearglied (34) kontaktiert, wenn das Linearglied (34) in den Linearglied-Halteteil (14) eingesteckt wird, zu der Nadelbettmitte (Ga) gedrückt wird, um den Kopf (22) um die Achse (m) des Drahts (31) in der Richtung weg von der Nadelbettmitte (Ga) zu schwenken.
  2. Flachstrickmaschine (1) nach Anspruch 1, wobei sich der Linearglied-Halteteil (14) und der Nadelbettvorderende-Halteteil (12) jeweils zu dem Nadelbettspalt (G) in dem vorderen Endteil des Nadelbetts (11) öffnen und Flächen (141, 121) der Halteteile (14, 12) parallel zueinander sind.
  3. Flachstrickmaschine (1) nach Anspruch 1 oder 2, wobei der Passteil (23) einen bogenförmigen Teil (26) enthält, der einen Punktkontakt mit jeweils der Bodenfläche (131) und der Vorderendseitenfläche (132) der Schnapppassvertiefung (13) herstellt.
  4. Flachstrickmaschine (1) nach einem der Ansprüche 1 bis 3, wobei sich ein Teil des Körpers (21) zwischen dem gekrümmten Teil (24) und dem Passteil (23) verjüngt, sodass die Dicke des Teils in der Oben-Unten-Richtung von dem gekrümmten Teil (24) zu dem Passteil (23) vermindert.
EP16197050.4A 2015-11-06 2016-11-03 Flachstrickmaschine mit festen platinen Active EP3165649B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015218212A JP6333229B2 (ja) 2015-11-06 2015-11-06 固定シンカーを有する横編機

Publications (2)

Publication Number Publication Date
EP3165649A1 EP3165649A1 (de) 2017-05-10
EP3165649B1 true EP3165649B1 (de) 2020-01-08

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EP16197050.4A Active EP3165649B1 (de) 2015-11-06 2016-11-03 Flachstrickmaschine mit festen platinen

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EP (1) EP3165649B1 (de)
JP (1) JP6333229B2 (de)
KR (1) KR101844264B1 (de)
CN (1) CN106676740B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107829201A (zh) * 2017-11-15 2018-03-23 芜湖乐佳自动化机械有限公司 一种多用型电脑横机针床机座
JP7256632B2 (ja) * 2018-11-14 2023-04-12 株式会社島精機製作所 固定シンカーおよび横編機

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
JPH03504991A (ja) * 1988-06-13 1991-10-31 ウニヴエルザル　マシーネンフアブリーク　ドクトル　ルドルフ　シーベル　ゲーエムベーハー　ウント　コムパニー　カーゲー 平床編機
JPH03232823A (ja) * 1990-02-07 1991-10-16 Shima Seiki Seisakusho:Kk ノックオーバータイミング調整可変な機能を有する横編機
DE19505099A1 (de) * 1995-02-15 1996-08-22 Schieber Universal Maschf Flachstrickmaschine
JP3140990B2 (ja) * 1997-08-11 2001-03-05 株式会社島精機製作所 可動ループ形成プレートを備えた横編機
JP4348286B2 (ja) * 2004-12-09 2009-10-21 株式会社島精機製作所 横編機
CN201588055U (zh) * 2009-11-17 2010-09-22 高文亮 一种电脑横机的针床组合件
JP2013139644A (ja) * 2011-12-28 2013-07-18 Shima Seiki Mfg Ltd 横編機のシンカー装置
JP6223194B2 (ja) * 2014-01-10 2017-11-01 株式会社島精機製作所 シンカー装置を備えた横編機

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
JP6333229B2 (ja) 2018-05-30
EP3165649A1 (de) 2017-05-10
KR101844264B1 (ko) 2018-04-02
CN106676740A (zh) 2017-05-17
CN106676740B (zh) 2018-11-23
JP2017089027A (ja) 2017-05-25
KR20170053571A (ko) 2017-05-16

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