EP0402034B1 - Doppelgestrick-Rundstrickmaschine - Google Patents

Doppelgestrick-Rundstrickmaschine Download PDF

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Publication number
EP0402034B1
EP0402034B1 EP90305898A EP90305898A EP0402034B1 EP 0402034 B1 EP0402034 B1 EP 0402034B1 EP 90305898 A EP90305898 A EP 90305898A EP 90305898 A EP90305898 A EP 90305898A EP 0402034 B1 EP0402034 B1 EP 0402034B1
Authority
EP
European Patent Office
Prior art keywords
needles
sinkers
sinker
cylinder
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.)
Expired - Lifetime
Application number
EP90305898A
Other languages
English (en)
French (fr)
Other versions
EP0402034A1 (de
Inventor
Shinji Kawase
Shozo Yorisue
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.)
Precision Fukuhara Works Ltd
Original Assignee
Precision Fukuhara Works 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 Precision Fukuhara Works Ltd filed Critical Precision Fukuhara Works Ltd
Publication of EP0402034A1 publication Critical patent/EP0402034A1/de
Application granted granted Critical
Publication of EP0402034B1 publication Critical patent/EP0402034B1/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
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/06—Circular knitting machines with independently-movable needles with needle cylinder and dial for ribbed goods
    • 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

Definitions

  • This invention relates generally to a double-knit circular knitting machine wherein the vertical length of travel of the cylinder needles is reduced by lowering the stitch forming ledge of the sinkers as the needles are being raised to clearing level and raising the stitch forming ledge of the sinkers as the needles are being drawn downwardly to stitch drawing level, and more particularly, to such a machine wherein the sinkers are supported for inward and outward movement between the dial and cylinder needles along a downwardly inclined path of travel and with the sinkers being moved outwardly and upwardly as the needles are drawn downwardly to raise the level of the stitch drawing ledge during stitch loop formation and with the sinkers being moved inwardly and downwardly as the needles are raised so that the shed stitch loops are moved inwardly and downwardly by the nebs of the sinkers.
  • a newly formed loop slides downward on the needle stem and provides the various pattern structures desired.
  • a pattern structured fabric such as a rib knit structure
  • any yarn breakage during knitting typically results in the knit fabric dropping from the machine.
  • the yarn from the cup end of the dropped fabric must be threaded onto at least every two or three needles and then restored to its initial state before dropping. This mandates an operator's slowly running the knitting machine to assure proper threading.
  • JP-A 63-42186 a double-knit circular knitting machine is disclosed which solves some of the aforementioned problems by the application and use of a novel sinker.
  • the distance between the foremost end of the sinker and the rotating dial is shortened when the sinker advances to the inside of the machine.
  • a thick fabric cannot be knitted unless the dial is upwardly moved for increasing the separation distance so as to allow a knitted fabric to easily pass through the formed gap without interference.
  • the sinker is arranged perpendicularly to the knitting needle, the sidewall of the sinker rest ring is small, thus creating an unstable sinker movement.
  • US-A-4180993 describes a sinker configuration in which each sinker has a downwardly inclined edge adjacent the inner or needle cylinder end of the sinker cooperating with a surface at the cylinder end of the sinker groove or slot so that, as the sinker is retracted outwardly and advanced inwardly by its sinker cam, the cylinder end of the sinker is rocked upwardly and downwardly. The cylinder end of each sinker is raised as adjacent needles move downwardly and vice versa .
  • the present invention consists in a double-knit circular knitting machine including a plurality of cylinder needles supported in a rotating needle cylinder for vertical movement parallel to the axis of rotation of said needle cylinder, a plurality of dial needles radially slidable on a dial and operative with said cylinder needles, knitting cam means for raising said cylinder needles to a clearing level and for advancing said dial needles outwardly and then lowering said cylinder needles and retracting said dial needles inwardly, sinkers supported for inward and outward movement between said needles, each of said sinkers including a stitch drawing ledge and a neb on the inner end portion of each of said sinkers and cooperating with adjacent needles in the formation of stitch loops, and means supporting said sinkers for movement in a radial direction between said needles and including radially extending sinker slots slidably supporting outer end portions of said sinkers, characterised in that said sinker supporting means supports said sinkers also for movement along a downwardly inclined path of travel and
  • yarn is fed to the needles when the cylinder needles are in a raised, clearing position and when the dial needles are in an outward advanced position.
  • the cylinder needles are successively moved downwardly while the dial needles are successively moved inwardly.
  • the sinkers are simultaneously moved in an outward and upward direction along the downwardly inclined path of travel while the cylinder needles are being lowered and the dial needles are being retracted so that the stitch drawing ledge engages the yarn.
  • the stitch drawing ledge cooperates with the associated adjacent needles to form stitch loops of a length determined by the amount of upward vertical movement imparted to the stitch forming ledge and the amount of downward and inward movement of the cylinder and dial needles.
  • the cylinder needles are successively moved upwardly and the dial needles are successively moved outwardly after forming the stitch loops therewith.
  • the sinkers are simultaneously moved in an inwardly and downwardly direction along the downwardly inclined path of travel to engage the sinker nebs with the fabric and move the same inwardly and downwardly to aid in shedding the stitch loops from the cylinder and dial needles as they are respectively raised and advanced with the newly formed stitch loop thereon.
  • a rotating needle cylinder 1 is supported on a driven ring gear 6 and the outside surface of the needle cylinder 1 is provided with the usual needle slots 1a in which cylinder needles, broadly indicated at 2 , are supported for vertical movement parallel to the axis of rotation of the needle cylinder 1 .
  • hooked latch needles are preferred.
  • Each knitting needle 2 is provided with a hook 2a and a pivoted latch 2b ( Figure 4), and an operating butt, as indicated at 2c ( Figure 1).
  • Conventional knitting cams, including stitch cam means supported on cam plates 9 are provided for imparting vertical movement to the knitting needles 2 .
  • the cam plates 9 are supported on the inner surface of the cam holder ring 8 which is fixed on a cam ring plate 10 .
  • a rotating dial 4 is supported on a needle dial hub 7 .
  • the outer surface of the dial 4 is spaced from and extends over an upper portion 1b of the rotating needle cylinder and is rotatable therewith.
  • the top surface of the dial 4 is provided with the usual needle slots in which hooked latch dial needles, broadly indicated at 3 , are supported for radial movement in conjunction with cylinder needles 2 during knitting operation.
  • Each dial needle 3 is provided with a needle hook 3a and latch 3b ( Figure 4), and an operating butt 3c ( Figure 1).
  • Knitting cams, including stitch cam means supported on dial cam plate 12 are provided for imparting radial, horizontal movement to the knitting needles 3 .
  • the dial cam plate 12 is supported on the lower surface of a dial cam holder ring 11 which is fixed to a dial cam ring plate 13 .
  • the upper surface of the needle cylinder includes the downwardly and inwardly inclined surface 1b which defines a sinker nose support ring for the nose of the sinkers as will be described herein.
  • a sinker support bed 14 is fixed to the exterior of the upper end of the needle cylinder 1 and is provided with a downwardly and inwardly inclined sinker sliding surface 14a defined by the lower ends of sinker slots formed in the sinker bed 14 and at the same downwardly inclined angle as the sinker sliding surface 1b of the sinker nose ring defined on the upper surface of the needle cylinder 1 .
  • the inclined surface 1b and the sliding surface 14a collectively define sinker support ring means of inverted truncated conical shape. As illustrated, the sinker sliding surface 14a is located at a lower level than the sinker sliding surface 1b .
  • sinkers broadly indicated at 15 , cooperate with the cylinder and dial needles 2 , 3 to form stitch loops and are supported for movement in a radial direction and along a downwardly and inwardly inclined path of travel between the cylinder needles 2 .
  • Sinker cap 16 is in turn supported on a sinker cap ring 18 which is supported in spaced-apart locations on the upper ends of support standards 19 surrounding the needle cylinder 1 .
  • the sinker cams 17 are supported in a downwardly inclined position at the same downwardly inclined angle as the inclined sliding surfaces 1b and 14a on the respective inclined cylinder surface and sinker bed 14 .
  • the sinker sliding surfaces 1b and 14a are illustrated in Figure 1 as being downwardly and inwardly inclined at an angle of around 20° relative to a line perpendicular to the vertically disposed cylinder needles 2 . While this 20° downwardly inclined angle is preferred, the present invention is not limited to this particular angular inclination, but may be positioned at an angle from 10° to 45°, and preferably within the range of 15° to 30°.
  • the outer portion of the special sinker 15 includes an elongate body portion having an outer lower planar sliding edge 15e adapted to rest upon and slide along the inclined surface 14a of the sinker bed 14 .
  • the sinker 15 also includes an inner lower planar sliding edge 15b adapted to rest on and be slidably supported along the inclined sliding surface 1b on the upper surface of the cylinder 1 .
  • the inner sliding edge 15b is disposed at a higher level than the outer sliding edge 15e , as clearly shown in Figure 2.
  • a stitch drawing ledge 15a is provided on the upper inner portion of the sinker and a neb 15d extends over the outer portion of the stitch drawing ledge 15a and defines a sinker throat 15c between the neb 15d and the outer portion of the stitch drawing ledge 15a .
  • An upstanding operating butt 15f is provided on the outer and upper end portion of the elongated body portion of the sinker 15 . The butt 15f extends upwardly at a right angle from the body portion of the sinker 15 and is adapted to be engaged by the sinker cams 17 to impart the required inward and outward radial movement to the sinkers 15 .
  • the stitch drawing ledge extends along a line which is parallel with the lower planar sliding edge of the sinker.
  • the present special type sinker is characterized by the stitch drawing ledge 15a being slanted downwardly toward the operating butt 15f on the outer end portion of the elongate body portion of sinker 15 .
  • the downwardly inclined or outwardly slanting stitch drawing ledge 15a of the sinker 15 of the present invention is different from the normal type sinker in which the stitch drawing ledge extends parallel to the lower planar sliding edge of the sinker.
  • the present sinker is also different from the special sinkers of the type disclosed in U S-A 3,837,185 and 3,986,371 wherein the stitch drawing ledge slants downwardly or inwardly in the direction of the inner end of the sinker.
  • the solid line 50 indicates the path of travel of the top of the hook of the cylinder needles 2 during a knitting cycle while the dash-dot line 52 indicates the radial path of travel of the stitch drawing ledge 15a during a knitting cycle.
  • the dotted line 51 indicates the path of travel of the dial needle 3 .
  • the alternate long and double-dashed line 53 indicates the path of travel of the sinker throat 15c .
  • a yarn feed carrier and finger 20 ( Figures 1 and 8) is positioned to feed a yarn indicated at 54 ( Figure 8) to the needles as they are moved to a stitch forming level.
  • the needles 2,3 are successively raised as they approach the knitting station and are moved outwardly to the clearing level along the solid line 50 in Figure 3 to a position where the previously formed loops surrounding the shanks of the cylinder and dial needles 2,3 are positioned beyond the tip of the latches 2b, 3b , as shown in Figures 4-6.
  • the sinkers 15 are moved and retained in an inwardly and downwardly inclined position along the downwardly inclined path of travel between the needles 2,3 so that the fabric is moved inwardly by the neb 15d to maintain the previously formed stitch loops below the tip of the latches 2b, 3b and in tight engagement with the shanks of the needles, as shown in Figure 6.
  • both the outer and inner portions of the sinkers 15 are being supported.
  • the lower planar sliding edge 15b on the inner end or nose of the sinker 15 is slidably supported on the downwardly and inwardly inclined surface 1b of the cylinder 1 .
  • Lower planar sliding edge 15e on the outer end portion of the sinker 15 is slidably supported 14a of the sinker bed 14 ( Figure 1).
  • both the inner and outer portions of the sinkers 15 are supported as the needles are drawn down to stitch forming level.
  • the cylinder needle 2 begins to rise at the point where the dial needle 3 is retracted to the innermost position.
  • the sinker moves in the inwardly and downwardly direction so that the previously formed stitch loops shed from the upper end of the needle hook 2a is engaged by the neb 15d and moved inwardly to aid in shedding the stitch loop from the needle.
  • the sinker throat 15c pushes the knit fabric and assists the loop on the dial needle 3 to cast-off the stitch. This inward and downward movement of the sinkers 15 ensures that the needles 2 do not again pass upwardly through the shed stitch loop.
  • the cylinder needle 2 continues to rise and the dial needle 3 begins its advance. This begins the start of the knitting cycle as illustrated in Figure 4.
  • the inward and downward movement of the sinkers 15 ensures that the needles 2 do not again pass upwardly through the shed stitch loop.
  • the sinkers 15 continue to move the fabric inwardly and downwardly as the needle 2 continues to rise, as shown in Figures 4 and 10, so that the newly formed stitch loop is maintained in engagement with the outer surface of the needle shank and imparts an opening motion to the latches of the needles.
  • This knitting cycle is repeated at each of the subsequent knitting stations around the needle cylinder to form the knit fabric.
  • a compound or sliding latch needle with a modified cam also can be used in accordance with the present invention.
  • a jacquard apparatus for patterning which can include a pattern wheel, a pattern drug, or other electronic patterning device also can be included for knitting various artistic patterns.
  • FIG. 11 illustrates a second embodiment of the special type of sinker used in accordance with the present invention.
  • the sinker grooves or slots in the machine can be modified as needed.
  • the forward end of the sinker 150 includes a stitch drawing ledge 150a extending horizontally.
  • Inclined surface 150b is in a plane defined by the inclined surface 150e so that the entire lower edge of the sinker defined by both surfaces 150b, 150e are guided by sinker grooves.
  • Sinker 150 includes a throat 150c and a neb 150d .
  • a control butt 150f is included.
  • sinkers 15 offer several benefits. If a knit fabric drops on account of yarn breakage during knitting, the machine can be threaded in a similar manner as a single-knit circular knitting machine. Additionally, a thick fabric can be knitted. The inwardly and downwardly inclined direction of the sinker provides a gap between the tip of the sinker knitting ledge 15a and the needles 2,3 . Therefore, a knitted fabric can pass between the gap. Thus, the winding tension is more readily applied to the knit fabric which results in the potential for higher quality and a larger knit fabric thickness.

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

Claims (4)

  1. Rundstrickmaschine mit einer Vielzahl von Zylindernadeln (2), die so in einem drehbaren Nadelzylinder (1) gehalten werden, daß sie sich senkrecht, parallel zur Drehachse des genannten Nadelzylinders (1) bewegen, einer Vielzahl von Rippnadeln (3), die radial gleitend auf einem Teller (4) angeordnet sind und mit den genannten Zylindernadeln (2) zusammenarbeiten, Nockenteilen (9,12) zum Anheben der genannten Zylindernadeln (2) auf die zur Freigabe erforderliche Höhe und zum Vorschieben der genannten Rippnadeln (3) nach außen und anschließenden Absenken der genannten Zylindernadeln (2) und Einziehen der genannten Rippnadeln (3), Platinen (15), die zur Einwärts- und Auswärtsbewegung zwischen den genannten Nadeln gehalten sind, wobei jede der genannten Platinen mit einem Maschenziehrand (15a) und einem Vorsprung (15d) am innenliegenden Endteil jeder der genannten Platinen (15) versehen ist und mit den angrenzenden Nadeln (2,3) zur Bildung der Maschenschlingen zusammenarbeitet, und einer die genannten Platinen (15) für die Bewegung in radialer Richtung zwischen den genannten Nadeln tragenden und sich radial erstreckenden, die äußeren Endteile der genannten Platinen gleitend tragende Platinenschlitze aufweisenden Vorrichtung (14, 1b), dadurch gekennzeichnet, daß die genannte platinentragende Vorrichtung die genannten Platinen (15) auch für die Bewegung entlang einem nach unten geneigten Weg trägt und eine drehbare Ringvorrichtung (14) in der Form eines umgekehrten Kegelstumpfes, die außerhalb des genannten Nadelzylinders (1) angebracht ist und die genannten, darin ausgebildeten, sich radial erstreckenden Platinenschlitze aufweist, und einen drehbaren Platinennasenträgerring (1b) umfaßt, der am oberen Ende des genannten Nadelzylinders (1) zum gleitenden Tragen von inneren Endteilen der genannten Platinen (15) angeordnet ist, wobei die Platinen nach unten und nach innen zu den genannten Nadeln hin geneigt sind.
  2. Rundstrickmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die genannte drehbare Ringvorrichtung nach unten und nach innen zu den genannten Nadeln in einem Winkel von 10° bis 45° geneigt ist.
  3. Rundstrickmaschine nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß sich die genannte, die äußeren Endteile der genannten Platinen tragende, drehbare Ringvorrichtung unterhalb der Position des genannten, die inneren Endteile der genannten platinentragenden Platinennasenträgerringes befindet.
  4. Rundstrickmaschine nach einem der Ansprüche 1, 2 oder 3, dadurch gekennzeichnet, daß jede der genannten Platinen mit einer äußeren unteren ebenen Gleitbahn (15e), die in der genannten Platinenträgervorrichtung (14) getragen wird, einer inneren unteren ebenen Gleitbahn (15b), die von dem Platinennasenträgerring (lb) getragen wird, und einem Maschenziehrand (15a) und einem Vorsprung (15d) versehen ist, der horizontal zu dem nach unten geneigten Weg der Platinen positioniert ist.
EP90305898A 1989-05-31 1990-05-31 Doppelgestrick-Rundstrickmaschine Expired - Lifetime EP0402034B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1138017A JPH038840A (ja) 1989-05-31 1989-05-31 編地の製造方法およびこれに使用するダブルニット丸編機
JP138017/89 1989-05-31

Publications (2)

Publication Number Publication Date
EP0402034A1 EP0402034A1 (de) 1990-12-12
EP0402034B1 true EP0402034B1 (de) 1994-04-20

Family

ID=15212110

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90305898A Expired - Lifetime EP0402034B1 (de) 1989-05-31 1990-05-31 Doppelgestrick-Rundstrickmaschine

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EP (1) EP0402034B1 (de)
JP (1) JPH038840A (de)
KR (1) KR970005846B1 (de)
DE (1) DE69008239T2 (de)
ES (1) ES2053110T3 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0625387U (ja) * 1992-09-01 1994-04-05 太志 庄司 パイル・ジャック
SG82515A1 (en) * 1995-06-01 2001-08-21 Jung Hao Hung Sinker for a circular knitting machine
CN100383305C (zh) * 2004-01-19 2008-04-23 佰龙机械厂股份有限公司 结构改进型圆编机
CN100351447C (zh) * 2004-01-19 2007-11-28 佰龙机械厂股份有限公司 圆编机结构
CN100404743C (zh) * 2004-01-19 2008-07-23 佰龙机械厂股份有限公司 圆编机绒毛织物的申克片
US7152436B2 (en) * 2004-01-20 2006-12-26 Pai Lung Machinery Mill Co., Ltd. Circular knitting machine
EP1559821A1 (de) * 2004-01-22 2005-08-03 Pai Lung Machinery Mill Co. Ltd. Verbesserte Rundstrickmaschine
KR100777604B1 (ko) * 2004-02-10 2007-11-27 파이 룽 머시너리 밀 코포레이션 리미티드 원형 편물기
KR100777610B1 (ko) * 2004-02-10 2007-11-27 파이 룽 머시너리 밀 코포레이션 리미티드 원형 편물기
CN102425029B (zh) * 2011-09-30 2014-01-08 洪荣豪 编织机的生克片耐磨装置
CN110714252B (zh) * 2019-11-22 2024-05-14 浙江慧林智能设备有限公司 一种高集成电子提花选针电磁铁

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US925036A (en) * 1906-06-30 1909-06-15 Louis N D Williams Web-holder for rib-knitting machines.
FR671288A (fr) * 1928-04-17 1929-12-31 Perfectionnements aux métiers circulaires à tricotage côtelé
US3986371A (en) * 1970-01-16 1976-10-19 Elitex, Zavody Textilniho Strojirenstvi Generalni Reditalstvi Method for forming loops in circular knitting machines
CS156325B1 (de) * 1972-03-17 1974-07-24
IT1072299B (it) * 1977-01-13 1985-04-10 Zini Roberto Metodo di formazione di tessuto a maglia con platine erettili in telaio ad immagliatrici e platina formatrice per deto telaio
EP0351935B1 (de) * 1988-07-20 1994-06-29 Precision Fukuhara Works, Ltd Rundstrickmaschine zum Stricken eines Tuches

Also Published As

Publication number Publication date
DE69008239D1 (de) 1994-05-26
JPH038840A (ja) 1991-01-16
ES2053110T3 (es) 1994-07-16
DE69008239T2 (de) 1994-11-10
KR970005846B1 (ko) 1997-04-21
EP0402034A1 (de) 1990-12-12
KR900018443A (ko) 1990-12-21

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