EP2570531B1 - Mechanismus zum Runterdrücken eines Gestricks und entsprechende Platine für Flachstrickmaschinen - Google Patents

Mechanismus zum Runterdrücken eines Gestricks und entsprechende Platine für Flachstrickmaschinen Download PDF

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Publication number
EP2570531B1
EP2570531B1 EP20110181406 EP11181406A EP2570531B1 EP 2570531 B1 EP2570531 B1 EP 2570531B1 EP 20110181406 EP20110181406 EP 20110181406 EP 11181406 A EP11181406 A EP 11181406A EP 2570531 B1 EP2570531 B1 EP 2570531B1
Authority
EP
European Patent Office
Prior art keywords
sinker
shaft
shaft rotating
rotating recess
sinkers
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.)
Not-in-force
Application number
EP20110181406
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English (en)
French (fr)
Other versions
EP2570531A1 (de
Inventor
Yi Chen Chen
Kai Ying Cheng
Jian-Hao Peng
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.)
Pai Lung Machinery Mill Co Ltd
Original Assignee
Pai Lung Machinery Mill Co Ltd
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Publication date
Application filed by Pai Lung Machinery Mill Co Ltd filed Critical Pai Lung Machinery Mill Co Ltd
Priority to EP20110181406 priority Critical patent/EP2570531B1/de
Publication of EP2570531A1 publication Critical patent/EP2570531A1/de
Application granted granted Critical
Publication of EP2570531B1 publication Critical patent/EP2570531B1/de
Not-in-force 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
    • 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
    • D04B15/88—Take-up or draw-off devices for knitting products
    • D04B15/90—Take-up or draw-off devices for knitting products for flat-bed knitting machines

Definitions

  • the present invention relates to a downward pressing mechanism for a flat knitting machine to press a yarn to form a knitted fabric and to a sinker thereof.
  • a protrusive pattern cloth i.e. jacquard fabric
  • sinkers are swung about a shaft to press a yarn downwards to form a knitted fabric to knit the protrusive pattern cloth.
  • Taiwanese patent No. 338440 entitled “Improved sinker for flat knitting machines” discloses a sinker 10 that is braced by a bracing rod 22 to achieve swinging.
  • a bracing rod 22 needs to run through all the sinkers 10 individually for coupling.
  • the sinkers 10 also have to be removed individually for replacement as needed, and then reassembled individually again. This is troublesome, tedious and time-consuming.
  • Taiwanese patent No. 1274796 entitled “Sinker for flat knitting machines to downward press mesh” discloses a sinker 1 with a slot 19 threaded through by a loosening yarn 45 of the knitted fabric as shown in its FIG. 1 .
  • the loosening yarn 45 of the knitted fabric has to be threaded individually through all the sinkers 1 and also has to be removed individually therefrom to replace the broken one during repair and maintenance. After a new sinker I has been replaced, the loosening yarn 45 of the knitted fabric has to be thread through all the sinkers 1 again. The process also is troublesome and time-consuming.
  • WO 95/07382 A discloses a device for holding down the stitches being formed in a flat knitting machine.
  • the device includes at least one needle bed having a plurality of needles and pressing means located between two plates, which is controlled by a flat cam fastened to the carriage of the machine.
  • the plate has a hole, through which a stem passes.
  • the pressing means includes a head, a butt extending from each one of the pressing means, and a recess through which a supporting rod extends.
  • the sinker is designed based on a substantially different approach according to which the sinkers are simply hanged or hinged onto the associated bracing shaft. A shaft coupling portion in the sense of the present invention is not disclosed. In particular the sinker neither has an elastic tongue nor a groove enabling the elastic movement of the elastic tongue.
  • a sinker according to the present invention can be produced and assembled or repaired, maintained and replaced more easily and quickly to thus reduce manpower and material costs and also lower price to meet market requirements.
  • a downward pressing mechanism for a flat knitting machine comprises a needle seat including a bearing surface to hold a plurality of sinkers and knitting needles separated by spacers, and a cam holder located above the sinkers to hold a cam.
  • the cam has a guide track to drive the sinker swinging.
  • a bracing shaft extends perpendicularly through the spacers at a lower side thereof.
  • Each sinker comprises a yarn pressing portion to press a yarn to form a knitted fabric, a swing guide portion driven by the guide track, and a shaft rotating recess to couple with the bracing shaft.
  • the shaft rotating recess comprises a shaft coupling portion to couple with the bracing shaft and a neck located at an entrance of the shaft coupling portion that is formed at an interval smaller than the diameter of the bracing shaft.
  • a retaining rod extends perpendicularly through the spacers at an upper side thereof, and the sinker includes a first retaining portion restricted by the bearing surface when the sinker rotates and swings downwards and a second retaining portion restricted by the retaining rod when the sinker rotates and swings upwards.
  • a guiding rod extends perpendicularly through the spacers and the sinker has a guiding notch with a guiding surface formed thereon to guide and limit rotating and swinging positions of the sinker.
  • each sinker further comprises a groove close to the shaft rotating recess and an elastic tongue formed between the groove and the shaft rotating recess.
  • a sinker of the present invention comprises a shaft rotating recess disposed at the bottom of the sinker, a swing guide portion extended outwards from an upper side of the sinker, and a yarn pressing portion protruded from one side of the sinker beyond a line connecting the swing guide portion and the shaft rotating recess to press a yarn to form a knitted fabric.
  • the shaft rotating recess comprises a shaft coupling portion configured to couple with a bracing shaft.
  • the sinker further comprises a groove close to the shaft rotating recess and an elastic tongue formed between the groove and the shaft rotating recess, wherein a neck located at an entrance of the shaft coupling portion is formed at an interval slightly smaller than the maximum interval of the shaft coupling portion.
  • the sinker has a first retaining portion between the shaft rotating recess and yarn pressing portion.
  • the sinker has a guiding notch at another side beyond a line connecting the swing guide portion and shaft rotating recess that has an arched guiding surface at a lower side, and a second retaining portion located between the guiding notch and swing guide portion.
  • the present invention provides many advantages over the conventional techniques, notably:
  • FIGS. 1 , 2 and 3 show a downward pressing mechanism for flat a knitting machine according to the present invention.
  • the downward pressing mechanism 1 includes a needle seat 10 which has a bearing surface 11 to hold a plurality of sinkers 7 and knitting needles 8 separated by spacers 3.
  • the sinkers 7, spacers 3 and knitting needles 8 are arranged sequentially and horizontally above the bearing surface 11 in a juxtaposed manner with a specific number required, and each knitting needle 8 is movable within a space formed by two sinkers 7, and the sinkers 7 also are movable in the separated space.
  • the cam 20 has a guide track 21 to drive the sinkers 7 swinging.
  • the guide track 21 is not formed in a straight line but at a curve depending on the requirement of knitting fabrics, thereby to drive the sinkers 7 swinging. This is also a technique known in the art.
  • a bracing shaft 4 extends perpendicularly through the spacers 3 at the lower side thereof.
  • Each sinker 7 includes a yarn pressing portion 75 to press a yarn to form a knitted fabric, a swing guide portion 70 driven by the guide track 21 that is preferably formed in a curved shape, and a shaft rotating recess 73 to couple with the bracing shaft 4.
  • the yarn pressing portion 75 is protruded from one side beyond a line connecting the swing guide portion 70 and shaft rotating recess 73 and corresponds to a yarn hooking portion of the knitting needle 8 to press the yarn to form the knitted fabric.
  • the shaft rotating recess 73 includes a shaft coupling portion 732 to couple with the bracing shaft 4 and a neck 731 located at an entrance of the shaft coupling portion 732 that is formed at an interval slightly smaller than the diameter of the bracing shaft 4.
  • a retaining rod 5 extends perpendicularly through the spacers 3 at an upper side thereof.
  • the sinker 7 further has a first retaining portion 71 restricted by the bearing surface 11 during rotating and swinging downward, and a second retaining portion 72 restricted by the retaining rod 5 during rotating and swinging upward.
  • the sinker 7 further has a guiding notch 74 which has a guiding surface 741 to guide and limit rotating and swinging positions of the sinker 7.
  • the guiding surface 741 is preferably an arched surface.
  • the sinker 7 also has a groove 76 close to the shaft rotating recess 73 and an elastic tongue 77 between the groove 76 and the shaft rotating recess 73. As shown in FIGS, 1 , 2 and 3 , during production, assembly or repairs and maintenance, the sinker 7 can be easily and quickly assembled or changed to reduce manpower and material costs, and also reduce the price to meet market requirements.
  • the sinker 7 has a shaft rotating recess 73 at the bottom, a curved swing guide portion 70 extended from the upper side, and a yarn pressing portion 75 protruded from one side beyond a line connecting the swing guide portion 70 and shaft rotating recess 73 to press a yarn to form a knitted fabric.
  • the shaft rotating recess 73 includes a shaft coupling portion 732 and a neck 731 at the entrance of the shaft coupling portion 732 and formed at an interval slightly smaller than the maximum interval of the shaft coupling portion 732.
  • the sinker 7 also has a guiding notch 74 at another side beyond the line connecting the swing guide portion 70 and shaft rotating recess 73.
  • the guiding notch 74 has an arched guiding surface 741 on a lower side.
  • the sinker 7 further has a groove 76 close to the shaft rotating recess 73 and an elastic tongue 77 between the groove 76 and shaft rotating recess 73.
  • the sinker 7 thus formed can be made integrally so that design and structure are simpler and more durable. Material cost also is lower, thus the price can be reduced to meet market requirements.
  • FIGS. 5 and 6 show the sinker according to the present invention in use conditions.
  • the cam holder 2 drives the cam 20 so that it moves horizontally.
  • the swing guide portion 70 of the sinker 7 is held in the guide track 21, the sinker 7 is driven by the curvature formed by the guide track 21.
  • the shaft rotating recess 73 is coupled on the bracing shaft 4, the sinker 7 swings about the bracing shaft 4 as shown in FIG. 6 ; meanwhile, the second retaining portion 72 is in contact with the retaining rod 5 to let the sinker 7 stop swinging.
  • the cam holder 2 continuously drives the cam 20 so that it moves horizontally, and the swing guide portion 70 is still driven by the curvature formed by the guide track 21 to swing back as shown in FIG. 5 ; meanwhile, as the first retaining portion 71 is in contact with the bearing surface 11 of the needle seat 10, the sinker 7 stops swinging.
  • the downward pressing mechanism 1 can operate continuously and the cam 20 also is moved horizontally and continuously to drive all the sinkers 7 on the needle seat 10 so that they swing and press downward to form a knitted fabric.

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

Claims (6)

  1. Niederdrücker für eine Flachstrickmaschine, umfassend:
    eine Ausnehmung (73) für eine rotierende Welle, die am unteren Ende des Niederdrückers (7) vorgesehen ist;
    einen Schwenk-Führungsabschnitt (70), der sich von einer Oberseite des Niederdrückers (7) nach außen erstreckt; und
    einen Garn-Drückabschnitt (75), der von einer Seite des Niederdrückers (7) über eine Linie hinausragt, die den Schwenk-Führungsabschnitt (70) und die Ausnehmung (73) für eine rotierende Welle miteinander verbindet, um ein Garn zu drücken, um ein Gewirk zu bilden;
    wobei die Ausnehmung (73) für eine rotierende Welle einen Wellen-Kopplungsabschnitt (732) aufweist, der ausgelegt ist, um mit einer Stützwelle (4) zu koppeln;
    dadurch gekennzeichnet, dass der Niederdrücker (7) weiterhin eine Nut (76) in der Nähe der Ausnehmung (73) für eine rotierende Welle und eine elastische Zunge (77) aufweist, die zwischen der Nut (76) und der Ausnehmung (73) für eine rotierende Welle ausgebildet ist, wobei
    ein Hals bzw. verengter Abschnitt (731), der an einem vorderen Abschnitt des Wellen-Kopplungsabschnitts (732) angeordnet ist, unter einem Abstand ausgebildet ist, der kleiner ist als der maximale Abstand zu dem Wellen-Kopplungsabschnitt (732).
  2. Niederdrücker nach Anspruch 1, weiterhin umfassend einen ersten Rückhalteabschnitt (71), der sich zwischen der Ausnehmung (73) für eine rotierende Welle und dem Garn-Drückabschnitt (75) befindet.
  3. Niederdrücker nach Anspruch 1 oder 2, weiterhin umfassend eine Führungskerbe (74) auf einer anderen Seite jenseits der Linie, die den Schwenk-Fuhrungsabschnitt (70) und die Ausnehmung (73) für eine rotierende Welle miteinander verbindet, wobei die Führungskerbe (74) eine bogenförmige Führungsfläche (741) auf einer Unterseite, die Führungskerbe (74) und den Schwenk-Fübrungsabschnitt (70) umfasst, die zwischen einem zweiten Rückhalteabschnitt (72) angeordnet sind.
  4. Mechanismus zum Niederdrücken für eine Flachstrickmaschine zum Antreiben sämtlicher Niederdrücker (7) der Flachstrickmaschine, sodass diese geschwenkt werden und die Niederdrücker nach unten drücken, umfassend:
    einen Nadelsitz (10) mit einer Auflagefläche (11) zum Abstützen der Niederdrücker (7) und der Stricknadeln (8), die durch Abstandshalter (3) voneinander getrennt sind; und
    einen Nockenhalter (2), der sich oberhalb der Niederdrücker (7) befindet, um einen Nocken (20) zu halten; wobei
    der Nocken (20) eine Führungsschiene (21) zum Antreiben der Schwenkbewegung der Niederdrücker (7) aufweist, und
    eine Stützwelle (4) sich senkrecht durch die Abstandshalter (3) hindurch an deren unterem Ende streckt;
    wobei jeder Niederdrücker (7) umfasst:
    eine Ausnehmung (73) für eine rotierende Welle, die am unteren Ende der Niederdrücker (7) vorgesehen ist und einen Wellen-Kopplungsabschnitt (732) aufweist, um mit der Stützwelle (4) zu koppeln;
    einen Schwenk-Führungsabschnitt (70), der sich von einer Oberseite der Niederdrücker (7) nach außen erstreckt und von der Führungsschiene (21) angetrieben wird; und
    einen Garn-Drückabschnitt (75), der von einer Seite der Niederdrücker (7) über eine Linie hinausragt, die den Schwenk-Führungsabschnitt (70) und die Ausnehmung (73) für eine rotierende Welle miteinander verbindet, um ein Garn zu drücken, um ein Gewirk zu bilden;
    dadurch gekennzeichnet, dass jeder Niederdrücker (7) weiterhin eine Nut (76) in der Nähe der Ausnehmung (73) für eine rotierende Welle und eine elastische Zunge (77) aufweist, die zwischen der Nut (76) und der Ausnehmung (73) für eine rotierende Welle ausgebildet ist, wobei
    ein Hals bzw. verengter Abschnitt (731), der an einem vorderen Abschnitt des Wellen-Kopplungsabschnitts (732) angeordnet ist, unter einem Abstand ausgebildet ist, der kleiner ist als der maximale Abstand zu dem Wellen-Kopplungsabschnitt (732).
  5. Mechanismus zum Niederdrücken nach Anspruch 4, wobei eine Haltestange (5) sich senkrecht durch die Abstandshalter (3) an deren oberem Ende erstreckt, wobei jeder Niederdrücker (7) einen ersten Rückhalteabschnitt (71), der durch die Auflagefläche (11) während der Dreh- und Schwenkbewegung nach unten begrenzt wird, und einen zweiten Rückhalteabschnitt (82) aufweist, der durch die Haltestange (5) während der Dreh- und Schwenkbewegung nach oben begrenzt wird.
  6. Mechanismus zum Niederdrücken nach Anspruch 4 oder 5, wobei eine Führungsstange (6) sich senkrecht durch die Abstandshalter (3) erstreckt, wobei jeder Niederdrücker (7) eine Führungskerbe (74) aufweist, die eine Führungsfläche aufweist, um Dreh- und Sehwenkstellungen der Niederdrücker (7) zu führen und zu begrenzen.
EP20110181406 2011-09-15 2011-09-15 Mechanismus zum Runterdrücken eines Gestricks und entsprechende Platine für Flachstrickmaschinen Not-in-force EP2570531B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20110181406 EP2570531B1 (de) 2011-09-15 2011-09-15 Mechanismus zum Runterdrücken eines Gestricks und entsprechende Platine für Flachstrickmaschinen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20110181406 EP2570531B1 (de) 2011-09-15 2011-09-15 Mechanismus zum Runterdrücken eines Gestricks und entsprechende Platine für Flachstrickmaschinen

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EP2570531A1 EP2570531A1 (de) 2013-03-20
EP2570531B1 true EP2570531B1 (de) 2014-03-05

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103320955A (zh) * 2013-07-24 2013-09-25 浙江丰帆数控机械有限公司 一种针织横机生克装置
JP6177263B2 (ja) * 2015-02-03 2017-08-09 株式会社島精機製作所 可動シンカーを備える横編機

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE546175A (de) * 1955-04-28
US3024633A (en) * 1956-04-06 1962-03-13 Gerhard Kochheim Flat knitting apparatus
US3025687A (en) * 1956-10-25 1962-03-20 Steinhof Apparatefab Karl Hand flat knitting machines
AT211464B (de) * 1959-08-10 1960-10-10 Remac Handstrickapp Erzeugung Platine für ein Flachstrickgerät
DE2047401A1 (en) * 1970-09-26 1972-03-30 Bauder, Rolf, Dipl Ing , 7411 Reut hngen Betzingen, Schach, Wolfgang, Dipl Ing, 7410 Reutlingen Circular knitting machine - for knitting pile fabrics
IT1264204B1 (it) * 1993-09-06 1996-09-23 Emm Srl Dispositivo per trattenere i ranghi di maglia in formazione in una macchina rettilinea per maglieria
IT1269782B (it) * 1994-05-16 1997-04-15 Mecmor Spa Macchina circolare per maglieria con platine di trattenimento della maglia
EP1522618B1 (de) 2003-10-07 2011-02-16 H. Stoll GmbH & Co. Platine einer Flachstrickmaschine
JP2008101309A (ja) * 2006-09-22 2008-05-01 Shima Seiki Mfg Ltd 横編機のシンカー装置およびヤーンガイドスペーサ

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