EP0554669A1 - Dispositif d'accrochage et de coupage pour le changement automatique de couleur de fil dans des métiers à tricoter rectilignes - Google Patents

Dispositif d'accrochage et de coupage pour le changement automatique de couleur de fil dans des métiers à tricoter rectilignes Download PDF

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Publication number
EP0554669A1
EP0554669A1 EP93100315A EP93100315A EP0554669A1 EP 0554669 A1 EP0554669 A1 EP 0554669A1 EP 93100315 A EP93100315 A EP 93100315A EP 93100315 A EP93100315 A EP 93100315A EP 0554669 A1 EP0554669 A1 EP 0554669A1
Authority
EP
European Patent Office
Prior art keywords
thread
conveyor
length
fabric
rollers
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.)
Withdrawn
Application number
EP93100315A
Other languages
German (de)
English (en)
Inventor
Cesare Alvaro Massetti
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.)
COMET MARTINELLI Srl
Original Assignee
COMET MARTINELLI Srl
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 COMET MARTINELLI Srl filed Critical COMET MARTINELLI Srl
Publication of EP0554669A1 publication Critical patent/EP0554669A1/fr
Withdrawn legal-status Critical Current

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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
    • D04B7/24—Flat-bed knitting machines with independently-movable needles for producing patterned fabrics
    • D04B7/26—Flat-bed knitting machines with independently-movable needles for producing patterned fabrics with colour patterns
    • 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
    • D04B15/54—Thread guides
    • D04B15/56—Thread guides for flat-bed knitting machines
    • D04B15/565—Associated thread-clamping or thread-severing devices

Definitions

  • the invention relates to a simplified gripping and cutting device for the automatic changing of the colour of the thread in use in flat knitting machines.
  • the invention is intended to overcome these and other disadvantages with the following idea for a solution.
  • the thread which is to be released by the carriage of the machine is captured by a hook and drawn downwards when the corresponding thread guide has reached the rest location, so that the length of thread between said hook and the thread guide in the rest position interacts with a conveyor which is automatically activated to grip the thread.
  • the other length of thread between the hook and the fabric suspended from the needles of the machine engages with a cutting means which operates automatically to produce the necessary separation between the fabric and the thread.
  • the conveyor grasps this thread also and withdraws corresponding lengths of thread from the other thread guides in the rest position.
  • the conveyor When a thread is to be brought back into use, the conveyor simply has to be reactivated after said thread has been sufficiently firmly attached to the fabric. By changing the orientation of the re-used thread with respect to the conveyor, said thread is disengaged from the conveyor as soon as the latter is activated.
  • the device according to the invention has, at least at one end of the beds of the knitting machine, a pair of parallel rollers 1 and 2, disposed parallel to each other, which are in contact with each other and which are carried at the same end by the shafts 3 and 4 respectively, which are associated with a single suitable motor and gear unit 5 which when commanded causes the said rollers to rotate in the direction indicated by the arrows R and at equal velocities.
  • the axles of the two rollers may be fixed, and in this case at least one of the two rollers is made from any suitable yielding elastic material, for example rubber.
  • the axle of one roller may be fixed while the axle of the other roller may move parallel to the axle of the fixed roller, the two rollers being caused by elastic means to remain in contact with each other.
  • the two rollers may both be of rigid material, or at least one of them may be made from rubber as in the preceding case.
  • the rollers 1 and 2 may be driven individually by the motor and gear unit 5, or only one of the said rollers is motorised while the other roller may be driven by friction by the motor roller.
  • rollers 1 and 2 are of suitably conical form, as indicated by 101 and 102.
  • One of the two rollers, 1 in the example, carries on its rear end an integral annular collar which grazes the base of the other roller.
  • rollers 1 and 2 are placed on the central vertical plane of the machine via their surface linear portion through which they are in mutual contact.
  • the rollers 1 and 2 are orientated with their conical ends facing upwards and in the direction of the beds of the machine, as shown schematically in Figure 1.
  • Said rollers 1 and 2 are placed beneath and in the intermediate part of the length of thread F between the fabric T suspended from the beds of the machine and the thread guide G in the rest position K.
  • the device according to the invention has a hook 7, placed vertically on the central plane of the machine, oriented to face upwards and connected to means of raising and lowering of any suitable type, for example to an electromagnet, to a cylinder and piston mechanism operated by fluid pressure, or to other suitable means not illustrated here since they may be imagined and easily constructed by experts in this field.
  • any suitable type for example to an electromagnet, to a cylinder and piston mechanism operated by fluid pressure, or to other suitable means not illustrated here since they may be imagined and easily constructed by experts in this field.
  • a cutting means 8 placed transversely on the central plane of the machine and driven by suitable means, is provided between the hook 7 and the beds of the machine.
  • the device designed in this way operates in the following manner.
  • the hook 7 keeps the thread taut, but without damaging the structure of the fabric T.
  • the cutting means 8 are made to operate and cut the length F1 of thread which is thus disengaged from the fabric T and held at its end by the conveyor with rollers 1 and 2.
  • FIG. 4 shows how a thread guide G, previously parked in the rest location K, has been captured by the carriage of the machine and brought into use.
  • the length of thread between the rollers 1 and 2 and the fabric T is placed on the discharge side of the said rollers.
  • the rollers 1 and 2 are temporarily driven in the direction of the arrow R, to discharge the end of the said thread, while the said rollers withdraw a corresponding quantity of thread from all the thread guides (not illustrated) present at the rest location K.
  • Figure 6 illustrates a different operation of the device in the aforesaid final stage of disengagement of a thread from the rollers 1 and 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP93100315A 1992-01-29 1993-01-12 Dispositif d'accrochage et de coupage pour le changement automatique de couleur de fil dans des métiers à tricoter rectilignes Withdrawn EP0554669A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITGE920006 1992-01-29
ITGE920006A IT1257309B (it) 1992-01-29 1992-01-29 "dispositivo semplificato di pinzatura e taglio, per il cambio automatico del colore del filo in lavorazione nelle macchine rettilinee da maglieria"

Publications (1)

Publication Number Publication Date
EP0554669A1 true EP0554669A1 (fr) 1993-08-11

Family

ID=11354182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93100315A Withdrawn EP0554669A1 (fr) 1992-01-29 1993-01-12 Dispositif d'accrochage et de coupage pour le changement automatique de couleur de fil dans des métiers à tricoter rectilignes

Country Status (2)

Country Link
EP (1) EP0554669A1 (fr)
IT (1) IT1257309B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2123395A1 (es) * 1994-09-10 1999-01-01 Mayer Textilmaschf Procedimiento y tricotosa de urdimbre para la fabricacion de un genero de punto con dibujo.
EP0900867A3 (fr) * 1997-09-02 2000-01-26 H. Stoll GmbH & Co. Procédé pour la fabrication d'un tricot dans un métier à tricoter rectiligne
EP0990724A3 (fr) * 1998-09-30 2000-12-13 H. Stoll GmbH & Co. Dispositif pour pincer et sectionner des fils dans un métier à tricoter
EP1918439A1 (fr) * 2006-11-03 2008-05-07 H. Stoll GmbH & Co. KG Ensemble pour pincer et sectionner des fils avec dispositif pour attribuer et enlever les fils
CN100422419C (zh) * 2006-08-15 2008-10-01 钱国洪 手摇横式编织机上的织片纱头自动夹切脱落器
EP1972709A4 (fr) * 2005-11-17 2012-08-15 Shima Seiki Mfg Procede et dispositif de coupe/maintien de chaine dans un metier a mailles cueillies
ITMO20110242A1 (it) * 2011-09-23 2013-03-24 Giordano Balotta Macchina tessile per la realizzazione di capi in tessuto o a maglia
IT202100009764A1 (it) * 2021-04-19 2022-10-19 Archimede S R L Macchina tessile per la realizzazione di capi in tessuto o a maglia

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2674866A (en) * 1947-09-04 1954-04-13 Svit Np Method and apparatus for cutting and clamping in straight knitting machines
DE1086388B (de) * 1953-06-23 1960-08-04 Arthur Joseph Cobert Flache Kulierwirkmaschine
DE1585356A1 (de) * 1962-01-08 1969-09-18 Schubert & Salzer Maschinen Vorrichtung zum selbsttaetigen Abtrennen und Halten von Faeden an Flachkulierwirkmaschinen
EP0293956A1 (fr) * 1987-05-08 1988-12-07 H. Stoll GmbH & Co. Procédé et dispositif pour traiter les fils de tricotage au bord du tricot

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2674866A (en) * 1947-09-04 1954-04-13 Svit Np Method and apparatus for cutting and clamping in straight knitting machines
DE1086388B (de) * 1953-06-23 1960-08-04 Arthur Joseph Cobert Flache Kulierwirkmaschine
DE1585356A1 (de) * 1962-01-08 1969-09-18 Schubert & Salzer Maschinen Vorrichtung zum selbsttaetigen Abtrennen und Halten von Faeden an Flachkulierwirkmaschinen
EP0293956A1 (fr) * 1987-05-08 1988-12-07 H. Stoll GmbH & Co. Procédé et dispositif pour traiter les fils de tricotage au bord du tricot

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2123395A1 (es) * 1994-09-10 1999-01-01 Mayer Textilmaschf Procedimiento y tricotosa de urdimbre para la fabricacion de un genero de punto con dibujo.
EP0900867A3 (fr) * 1997-09-02 2000-01-26 H. Stoll GmbH & Co. Procédé pour la fabrication d'un tricot dans un métier à tricoter rectiligne
EP0990724A3 (fr) * 1998-09-30 2000-12-13 H. Stoll GmbH & Co. Dispositif pour pincer et sectionner des fils dans un métier à tricoter
EP1972709A4 (fr) * 2005-11-17 2012-08-15 Shima Seiki Mfg Procede et dispositif de coupe/maintien de chaine dans un metier a mailles cueillies
CN100422419C (zh) * 2006-08-15 2008-10-01 钱国洪 手摇横式编织机上的织片纱头自动夹切脱落器
EP1918439A1 (fr) * 2006-11-03 2008-05-07 H. Stoll GmbH & Co. KG Ensemble pour pincer et sectionner des fils avec dispositif pour attribuer et enlever les fils
CN101200840B (zh) * 2006-11-03 2011-07-13 H.斯托尔两合公司 配有纱分配和刮纱装置的夹持-切割装置
ITMO20110242A1 (it) * 2011-09-23 2013-03-24 Giordano Balotta Macchina tessile per la realizzazione di capi in tessuto o a maglia
WO2013041952A3 (fr) * 2011-09-23 2013-06-13 Marco Turchi Machine à textile pour fabriquer des vêtements en tissu ou tricotés
IT202100009764A1 (it) * 2021-04-19 2022-10-19 Archimede S R L Macchina tessile per la realizzazione di capi in tessuto o a maglia
WO2022224110A1 (fr) * 2021-04-19 2022-10-27 Archimede S.R.L. Machine textile pour la fabrication de vêtements tissés ou tricotés

Also Published As

Publication number Publication date
ITGE920006A1 (it) 1993-07-29
IT1257309B (it) 1996-01-15
ITGE920006A0 (it) 1992-01-29

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