EP2072650B1 - Machine à tricoter circulaire dotée d'un couteau rotatif pour le découpage d'articles de tricot tubulaires - Google Patents

Machine à tricoter circulaire dotée d'un couteau rotatif pour le découpage d'articles de tricot tubulaires Download PDF

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Publication number
EP2072650B1
EP2072650B1 EP08020707A EP08020707A EP2072650B1 EP 2072650 B1 EP2072650 B1 EP 2072650B1 EP 08020707 A EP08020707 A EP 08020707A EP 08020707 A EP08020707 A EP 08020707A EP 2072650 B1 EP2072650 B1 EP 2072650B1
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EP
European Patent Office
Prior art keywords
drive
take
cutting blade
circular knitting
knitting machine
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.)
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Application number
EP08020707A
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German (de)
English (en)
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EP2072650A1 (fr
Inventor
Bernhard Schaut
Dietmar Tränkle
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Sipra Patententwicklungs und Beteiligungs GmbH
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Sipra Patententwicklungs und Beteiligungs GmbH
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Publication of EP2072650A1 publication Critical patent/EP2072650A1/fr
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Publication of EP2072650B1 publication Critical patent/EP2072650B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/34—Devices for cutting knitted fabrics
    • 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

Definitions

  • the invention relates to a circular knitting machine of the type specified in the preamble of claim 1.
  • a well-known circular knitting machine of this type ( DE-Gbm 74 24 526 ) is provided with a rotatable cutting blade, which serves the purpose of dividing the fabric tube produced by the circular knitting machine either between two wales or in the area of a so-called change point, within which the yarns forming the fabric tube are not processed into loops, but only to floats.
  • the cutting blade so that it can be easily installed in different types of machines and its relative position to the fabric tube can be easily adjusted, connected to one end of a flexible shaft, the other end is provided with a drive wheel, which upon rotation of the needle cylinder on the Underside of a stationary support ring unrolls. As a result, the flexible shaft and with it also the cutting blade are automatically rotated in rotation of the needle cylinder.
  • the drive wheel of the flexible shaft may be formed in the known circular knitting machine as a friction wheel or as a gear.
  • the design as a friction wheel has the disadvantage that due to slippage or wear fluctuating speeds can result for the cutting blade. As long as it comes to separating the fabric hose in the area of floats, this is not a significant problem. However, if the fabric hose to be separated along areas where a conventional stitching takes place, especially at speeds of the cutting blade, which are smaller than that Withdrawal speed of the fabric tube corresponds to unclean or faulty cut edges.
  • the technical problem of the invention is the circular knitting machine of the type described in such a way that the flexible shaft is driven at a constant, preselected speed, the speed is easily changed and od provided with sprockets support rings od. Like. Be avoided can.
  • the invention has the advantage that the drive wheel of the flexible shaft is coupled at a suitable location with the drive means already present underneath the needle cylinder and intended to drive the take-off and / or take-up rollers. Your drive is therefore independent of the machine frame of the circular knitting attached support rings, and vice versa need the Support rings are not designed with regard to the drive shaft of the flexible shaft. As a result, the overall construction is significantly simplified. In addition, the drive shaft of the flexible shaft can be easily provided in an easily accessible place and therefore easily replaced if necessary. Additional drives for the cutting blade are unnecessary.
  • Fig. 1 and 2 show only necessary for understanding the invention components of a circular knitting machine, which essentially in the DE 101 20 736 C1 and DE 101 23 089 C1 is formed obvious manner, so that can be dispensed with further explanations for the expert.
  • Fig. 1 and 2 is a schematically indicated needle cylinder 1 in a not shown, supported on feet machine frame rotatably mounted about a machine axis 2 and connected to a likewise arranged in the machine frame drive.
  • the machine frame is near its bottom with a lower, later based on the Fig. 3 explained, provided stationary support ring on which a generally designated by the reference numeral 3 trigger and / or winding device is rotatably mounted about the machine axis 2.
  • the deduction and / or reeling device 3 serves the purpose of deducting and / or winding up a fabric tube produced by the circular knitting machine from the needle cylinder 1. It is immaterial for the purposes of the invention, whether the trigger and / or take-up only at least one take-off roll 4 or only a take-up roll 5 or both, to only deduct the fabric hose, only wind and / or withdraw and wind up, as the expert is well known. In the exemplary embodiment, two take-off rolls 4 and additionally a take-up roll 5 are present.
  • the trigger and / or winding device 3 further includes a rotatably mounted on the lower support ring frame 6, the z. B. essentially consists of two connected by rods 7 and a bottom 8, spaced apart side walls 9 and 10 and a transverse to the rods 7 arranged arm 11 is formed.
  • the two take-off rolls 4 and the take-up roll 5 are arranged between the side walls 9, 10 and rotatably mounted with their ends in these.
  • the arm 11 is provided in an upper portion with a support plate 12 to which one ends of two transverse to the two rollers 4 and 5, mutually parallel connecting rods 14 are attached.
  • the opposite ends of the connecting rods 14 are connected by a further support plate 15.
  • the two support plates 12, 15 and the connecting rods 14 form a support frame for two parallel to the connecting rods 14 arranged with their ends rotatable in or fixed to the support plates 12 and 15 mounted Umlenkstangen 16 whose length is slightly larger than the width of the needle cylinder of the first withdrawn fabric tube is in its two-ply state.
  • Umlenkstangen 16 whose length is slightly larger than the width of the needle cylinder of the first withdrawn fabric tube is in its two-ply state.
  • support rod 17 which is extended to the vicinity of the opposite support plate 12 and at the free end of two V-shaped arranged, fixed or rotatably connected to the support rod 17 rods or rollers 18 are mounted.
  • z. B. arranged as a disc blade cutting blade 19, which is arranged between and directly above the deflection bars 16 and rotatably mounted on a holder 20 and adjustable as needed.
  • the holder 20 is z. B. slidably mounted and lockable on one of the connecting rods 14.
  • the cutting blade 19 is according to Fig. 1 and 2 firmly connected to one end of a shaft 21, which serves to put the cutting blade 19 in a rotating movement.
  • the rotation of the cutting blade 19 is usually carried out in the fabric withdrawal direction, because in a rotation opposite to the withdrawal direction there is a risk that the knitted fabric gets caught in the cutting blade 19 and is pulled along by this.
  • the needle cylinder 1 by means of drivers 22 drivingly with the frame 6, z. B. is connected to the side walls 9 and 10. A rotation of the needle cylinder 1 therefore has the consequence that the entire trigger and / or take-up device 3 rotates together with the needle cylinder 1 about the machine axis 2.
  • the single-ply web then passes into the area of the driven take-off roll 4, which pulls the fabric tube with the predetermined production speed of the circular knitting machine, and is then wound up by the also driven take-up roll 5.
  • this mode of operation can be achieved regardless of whether the needle cylinder 1 and with it the entire withdrawal and / or winding device 3 or a camshaft surrounding the needle cylinder 1 and knitting needles or the like are rotated about the machine axis 2 while the needle cylinder 1 and the trigger and / or winding device 3 remain at a standstill.
  • Fig. 1 and 4 in each case one end of the winding roller 5 and the drive shaft 26 is rotatably mounted in the side wall 9 and fixedly connected to one arranged on the outside of the side wall 9 wheel 28 and 29 respectively.
  • the two wheels 28, 29 may be directly connected by means of an endless, on the circumference of the wheels 28, 29 adjacent drive element.
  • an endless drive member 30 rests on the periphery of the wheel 28 and a rotatably mounted in the side wall 9 intermediate wheel 31, which has a coaxial with him wheel 32, a guide wheel 33 and another endless Drive element 34 is connected to the wheel 29 of the take-up roller 5.
  • the wheels 28, 29, 31, 32 and 33 are each pulleys, while the drive elements 30, 34 consist of these adjacent belt.
  • the described, consisting of the parts 28 to 34 arrangement also forms on the outside of the side wall 9 arranged drive means in the form of a first belt drive which drives the take-up roller 5 with a synchronous to the needle cylinder rotation speed.
  • Fig. 2 and 5 is attached to a rotatably mounted in the opposite side wall 10 of the end of the winding roller 5 arranged on the outside of the side wall 10 wheel 36.
  • a wheel 37 is fixed to a rotatably mounted in the side wall 10 of the end of one of the take-off rollers 4.
  • Another, on the outside of the side wall 10 rotatably mounted drive wheel 38 is attached to a remote from the cutting blade 19 end of the shaft 21, which is formed in the circular knitting machine according to the invention as a flexible shaft.
  • the three wheels 36, 37 and 38 are drivingly connected by means of an endless drive element 39 that at least partially wraps around them.
  • the drive element 39 still runs over some deflection wheels 40 to 43, whose position is chosen so that the drive element 39, the wheels 36, 37 and 38 is applied with a sufficiently large wrap angle, and one of which such.
  • the deflection wheel 33 ( Fig. 4 ) can be used at the same time for tensioning the drive element 39.
  • the reference numeral 44 is in Fig. 5 the bearing point for the second take-off roll 4 is shown, which is taken as usual by frictional engagement of the driven take-off roll 4 and the goods located in the gap between two take-off rolls 4.
  • the wheels 36 to 38 and 40 to 43 are each formed as pulleys, while the drive element 39 consists of a belt adjacent thereto.
  • the described, consisting of the parts 36 to 43 arrangement also forms a second, on the outside of the side wall 10 arranged belt drive, the one take-off roller 4 and also from Fig. 2 apparent, flexible shaft 21, each with a synchronous to the needle cylinder rotation speed drives when the drive shaft 26 and from this the take-up roller 5 are rotated.
  • the take-off rolls 4, the take-up roll 5 and the flexible shaft 21 are thus driven at speeds which depend on the knitting speed with which the fabric tube is produced.
  • the drive wheel 38 can be arranged on an easily accessible, largely independent of the position of the cutting blade 19 position of the side wall 10. Is the drive wheel 38 finally od by means of a locking screw. Like. Easily secured to the flexible shaft 21, then it can also be easily exchanged for another drive wheel 38, if a different speed for the cutting blade 19 is desired depending on the knitted fabric to be produced ,
  • the gear ratios are preferably chosen so that the cutting blade 19 always rotates at a peripheral speed which is slightly larger than the withdrawal speed of the fabric tube. This ensures a perfect cutting line.
  • the described belt drives can also be formed as chain drives by the various wheels are formed as sprockets and the drive elements 30, 34 and 39 as chains, in which case the belt drives are replaced by chain drives.
  • the wheels 28, 29, 31 to 33, 36 to 38 and 40 to 43 as shown as To form gears and the drive elements 30, 34 and 39 as with these engaged, internally toothed timing belt.
  • the drive wheel 38 of the flexible shaft 21 with the drive means may be coupled to the take-up roller 5.
  • the belt or chain drives and drive means may be provided, which are formed of mutually engaged gears.
  • the drive member 38 of the flexible shaft 21 is in operative connection with those drive means which serve the drive of the trigger and / or take-up, so that no additional components must be provided on the circular knitting machine.

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

Claims (5)

  1. Métier à tricoter circulaire pour fabriquer un article tricoté tubulaire découpé, comprenant : un cylindre d'aiguille (1), un bâti (6) dans lequel sont respectivement montés à rotation au moins un cylindre d'évacuation (4) et/ou un cylindre de renvidage (5), des moyens d'entraînement (28 à 34 ; 36 à 43) pour entraîner ces cylindres et un couteau (19) pour découper l'article tricoté tubulaire, et un arbre souple (21) fixement relié au couteau (19) et à une roue d'entraînement (38), pour déplacer en rotation le couteau (19) avec une vitesse de rotation fonction de la vitesse de tricotage, caractérisé en ce que la roue d'entraînement (38) de l'arbre souple (21) est fonctionnellement reliée aux moyens d'entraînement (28 à 34 ; 36 à 43) pour le cylindre d'évacuation (4) et/ou le cylindre de renvidage (5).
  2. Métier à tricoter circulaire selon la revendication 1, caractérisé en ce que les moyens d'entraînement (28 à 34 ; 36 à 43) comprennent une transmission par chaîne ou par courroie, et la roue d'entraînement (38) de l'arbre souple (21) est fonctionnellement reliée à cette transmission par chaîne ou par courroie.
  3. Métier à tricoter circulaire selon la revendication 2, caractérisé en ce qu'il comprend un cylindre de renvidage (5) et un cylindre d'évacuation (4), sachant que le cylindre de renvidage (5) est fonctionnellement relié par l'intermédiaire d'une première transmission par chaîne ou par courroie (28 à 34) à un arbre d'entraînement (26), et par l'intermédiaire d'une deuxième transmission par chaîne ou par courroie (36 à 43) au cylindre d'évacuation (4) et à la roue d'entraînement (38) de l'arbre souple (21).
  4. Métier à tricoter circulaire selon la revendication 3, caractérisé en ce que le cylindre de renvidage (5) présente à une extrémité une première roue (29) reliée à la première transmission par chaîne ou par courroie (28 à 34), et à l'autre extrémité une deuxième roue (36) reliée à la deuxième transmission par chaîne ou par courroie (36 à 43).
  5. Métier à tricoter circulaire selon l'une des revendications 1 à 4, caractérisé en ce qu'il comprend un dispositif (17, 18) disposé entre le cylindre d'aiguille (1) et le cylindre d'évacuation (4) et/ou le cylindre de renvidage (5), associé au couteau (19) et destiné à étaler l'article tricoté tubulaire découpé.
EP08020707A 2007-12-20 2008-11-28 Machine à tricoter circulaire dotée d'un couteau rotatif pour le découpage d'articles de tricot tubulaires Active EP2072650B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007063339A DE102007063339A1 (de) 2007-12-20 2007-12-20 Rundstrickmaschine mit einem drehbaren Schneidmesser zum Auftrennen eines Warenschlauchs

Publications (2)

Publication Number Publication Date
EP2072650A1 EP2072650A1 (fr) 2009-06-24
EP2072650B1 true EP2072650B1 (fr) 2011-05-11

Family

ID=40263062

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08020707A Active EP2072650B1 (fr) 2007-12-20 2008-11-28 Machine à tricoter circulaire dotée d'un couteau rotatif pour le découpage d'articles de tricot tubulaires

Country Status (9)

Country Link
US (1) US7882712B2 (fr)
EP (1) EP2072650B1 (fr)
JP (1) JP5453684B2 (fr)
KR (1) KR20090067037A (fr)
CN (1) CN101463528B (fr)
AT (1) ATE509148T1 (fr)
DE (1) DE102007063339A1 (fr)
SG (1) SG153754A1 (fr)
TW (1) TWI481755B (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2312030A1 (fr) 2009-10-15 2011-04-20 Pai Lung Machinery Mill Co., Ltd. Structure de collecte de tissus pour appareil de découpe de tissus
ITBS20130076A1 (it) * 2013-05-28 2014-11-29 Santoni & C Spa Macchina tessile circolare per maglieria di tipo ¿open¿ con basamento a ingombro ridotto
DE102013105941A1 (de) * 2013-06-07 2014-12-11 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Rundstrickmaschine mit Breithalter
CN104746229B (zh) * 2015-04-07 2016-08-24 广东溢达纺织有限公司 圆机落布机构及针织圆机
ITUB20155508A1 (it) * 2015-11-12 2017-05-12 Santoni & C Spa Macchina tessile circolare per maglieria di tipo ?open?, per la produzione in aperto e a larghezza variabile del telo con gruppo di tiraggio e/o raccolta del tessuto
CN109943968B (zh) * 2017-12-21 2020-08-11 佰龙(湖北)精密机械有限公司 剖布机的机架总成
KR101969068B1 (ko) * 2018-02-13 2019-04-15 (주)유영산업 원단 개폭용 가이드장치
CN108893854B (zh) * 2018-07-16 2020-07-07 宁波市晶杰国际物流有限公司 圆形纬编机自动下料缓冲定位装置
CN111519331B (zh) * 2020-04-23 2021-07-09 浙江恒隆芳纶科技有限公司 一种大圆机的下料结构
CN112623839A (zh) * 2020-12-24 2021-04-09 康美特(厦门)智控科技有限公司 一种用于针织大圆机组的开幅卷布机及其伺服控制方法

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DE7424526U (de) 1974-11-28 Mayer & Cie Vorrichtung zum Auftrennen des Warenschlauches von Rundstrick- oder Rundwirkmaschinen
US1802901A (en) 1928-04-25 1931-04-28 William S Mills Trimming attachment for looping machines
US3855822A (en) 1972-03-24 1974-12-24 Burlington Industries Inc Circular knitting machine takeup with a slitting device
US4314462A (en) * 1978-02-02 1982-02-09 Institut Textile De France Method and apparatus for guiding a flexible tube between annular and flattened cross section
FR2661925B1 (fr) 1990-05-10 1993-07-02 Legay Alain Methode de stockage d'un tricot sortant d'un metier circulaire a tricoter et metier pour la mise en óoeuvre de la methode.
JPH0860501A (ja) * 1994-08-08 1996-03-05 Fukuhara Seiki Seisakusho:Kk 開反巻取装置及びそれを有する丸編機
IT1309184B1 (it) * 1999-02-23 2002-01-16 Vignoni Srl Procedimento ed apparecchiatura per distendere e raccogliere untessuto a maglia prodotto da macchine tessili circolari.
CN2373466Y (zh) * 1999-06-01 2000-04-12 傅开实 针织圆机的剖布展卷装置
CN1189615C (zh) * 2001-04-24 2005-02-16 林进泳 可同步调整卷布张力并可折布及卷布的大圆机收布装置
DE10120736C1 (de) 2001-04-25 2003-02-13 Sipra Patent Beteiligung Rundstrickmaschine
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ITFI20020023A1 (it) * 2002-02-06 2003-08-06 Pilotelli Macchine Tessili S R Dispositivo tirapezza per una macchina da maglieria circolare e macchina comprendente detto tirapezza
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Also Published As

Publication number Publication date
ATE509148T1 (de) 2011-05-15
TWI481755B (zh) 2015-04-21
KR20090067037A (ko) 2009-06-24
DE102007063339A1 (de) 2009-06-25
EP2072650A1 (fr) 2009-06-24
CN101463528B (zh) 2013-08-28
US20090158781A1 (en) 2009-06-25
CN101463528A (zh) 2009-06-24
US7882712B2 (en) 2011-02-08
SG153754A1 (en) 2009-07-29
JP5453684B2 (ja) 2014-03-26
TW200949035A (en) 2009-12-01
JP2009150041A (ja) 2009-07-09

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