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EP3495539B1 - Dispositif de changement de fil électronique pour machine à tricoter circulaire - Google Patents

Dispositif de changement de fil électronique pour machine à tricoter circulaire Download PDF

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Publication number
EP3495539B1
EP3495539B1 EP17206372.9A EP17206372A EP3495539B1 EP 3495539 B1 EP3495539 B1 EP 3495539B1 EP 17206372 A EP17206372 A EP 17206372A EP 3495539 B1 EP3495539 B1 EP 3495539B1
Authority
EP
European Patent Office
Prior art keywords
yarn
plate
impelling
changing device
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.)
Active
Application number
EP17206372.9A
Other languages
German (de)
English (en)
Other versions
EP3495539A1 (fr
Inventor
Hsien-Te Tsai
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
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 Pai Lung Machinery Mill Co Ltd filed Critical Pai Lung Machinery Mill Co Ltd
Priority to ES17206372T priority Critical patent/ES2776732T3/es
Priority to EP17206372.9A priority patent/EP3495539B1/fr
Publication of EP3495539A1 publication Critical patent/EP3495539A1/fr
Application granted granted Critical
Publication of EP3495539B1 publication Critical patent/EP3495539B1/fr
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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
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/54—Thread guides
    • D04B15/58—Thread guides for circular knitting machines; Thread-changing devices
    • D04B15/60—Thread guides for circular knitting machines; Thread-changing devices with thread-clamping or -severing devices

Definitions

  • the present invention relates to an electronic color-changing yarn changing device for a circular knitting machine.
  • the patent discloses a yarn feeding device for a circular knitting machine.
  • the device includes a supporting element, which is arranged on the inner side of the machine bed and supports a set of yarn guides arranged side-by-side.
  • Each of the yarn guides comprises a passage for at least one yarn to be fed to the needles of the machine arranged in the bed and the supporting element.
  • the supporting element supports an element for clamping and cutting the yarn dispensed by the corresponding yarn guide.
  • a first member for actuating the yarn guides is provided to produce their passage from an inactive position, in which they are arranged so that their passage lies on the inner side of the knitting bed, to an active position, in which they are arranged so that their passage lies on the outer side of the needle bed, or vice versa, producing the passage of the yarn guides from the active position to the inactive position.
  • a second member is provided for actuating the clamping and cutting elements and producing the passage for the clamping and cutting elements from a position for clamping the yarn to a position for waiting for the yarn to be clamped.
  • the first actuating member is also configured on the supporting member and includes individual actuators.
  • the individual actuators can be actuated to produce the passage of each of the yarn guides from the inactive position to the active position or vice versa, or vice versa, from the active position to the inactive position.
  • the above patent includes a complex driving structure. More specifically, the patent utilizes two pneumatic tanks for performing the control of yarn feeding plates, and utilizes an additional independent pneumatic tank to control the mobile blade plate.
  • the electronic yarn changing device of the above patent cannot provide a simplified overall structure.
  • the present invention provides an electronic yarn changing device for a circular knitting machine.
  • the electronic yarn changing device includes at least two driving units, at least two impelling plates, and at least two yarn feeding units.
  • the driving units are individually controlled by an electronic signal.
  • Each of the impelling plates is respectively assembled to one of the driving units.
  • Each of the impelling plates includes at least one connecting portion mounted with the driving unit, an extension portion extending from the connecting portion and parallel to a motion direction of the impelling plate, and two pushing portions respectively extending from the extending portion, spaced by a first distance and perpendicular to the motion direction of the impelling plate.
  • the yarn feeding units are arranged side by side.
  • Each of the yarn feeding units sequentially includes a yarn feeding plate, a yarn clamping plate, a mobile blade plate and a fixed blade plate.
  • the yarn feeding plate includes a curved portion that has a length equal to the first distance and is parallel to the motion direction of the impelling plate, and a yarn feeding portion extending from the curved portion and perpendicular to the motion direction of the impelling plate.
  • the yarn clamping plate includes a plurality of guide columns disposed correspondingly to the curved portion and performing a two-dimensional motion when pushed by the impelling plate, and two through holes disposed correspondingly between the two pushing portions.
  • the mobile blade plate includes a body portion, a cutting blade portion extending from the body portion and perpendicular to the motion direction of the impelling plate, and two control rods provided on the body portion and respectively protruding towards the two through holes to cause the mobile blade plate to be driven by one of the pushing portions and to perform a one-dimensional motion.
  • a second distance smaller than the first distance is present between the two control rods.
  • each of the driving units is a pneumatic tank.
  • the pneumatic tank includes a tank and a pushing rod penetrating the tank
  • the impelling plate includes two of the connecting portions, and the two connecting portions are spaced and are respectively connected to ends of the pushing rod.
  • the clamping plate and the fixed blade plate respectively comprise a plurality of installation holes, and each of the plurality of guide columns is formed by a horizontal shaft penetrated through the plurality of installation holes which are located on the same axis line.
  • these driving units are arranged in a matrix.
  • the electronic yarn changing device includes an electrical control unit connected to the driving units.
  • the electronic yarn changing device includes two protective casing plates, which are disposed on two opposite outer sides of the yarn feeding units, respectively.
  • each of the driving units is a stepping motor.
  • the stepping motor includes an output shaft and a gear disposed at an end of the output shaft, and the connecting portion of the impelling plate is a rack.
  • each of the yarn feeding units requiring only one of the driving units, is capable of completing the yarn dispensing operation and the yarn withholding operation, thus more substantially simplifying the structure of the electronic yarn changing structure.
  • the present invention provides an electronic yarn changing device 10 for a circular knitting machine.
  • the electronic yarn changing device 10 is used for color-changing yarn changing during a weaving process of the circular knitting machine, and includes at least two driving unit 11, at least two impelling plates 12 and at least two yarn feeding units 13.
  • the numbers of the driving units 11, the impelling plates 12 and the yarn feeding units 13 can be adjusted according to the number of yarns for color changing configured to the electronic yarn changing device 10. For example, when the electronic yarn changing device 10 is configured to perform six-color yarn changing, the numbers of the driving units 11, the impelling plates 12 and the yarn feeding units 13 are individually six in number.
  • an example of the electronic yarn changing device 10 performs two-color yarn changing is given, and the present invention is not limited thereto.
  • Each of the driving units 11 is controlled by an electronic signal, and performs a corresponding operation after having received the electronic signal.
  • the electronic signal may be a yarn changing signal inputted into weaving process information of the circular knitting machine, and the yarn changing signal may be interpreted as a yarn dispensing operation or a yarn withholding operation.
  • each of the impelling plates 12 is driven by one of the driving units 11 to perform a one-dimensional motion.
  • Each of the impelling plates 12 includes at least one connecting portion 121 mounted with the driving unit 11, an extension portion 122 extending from the connecting portion 121 and parallel to a motion direction of the impelling plate 12, and two pushing portions 123 individually extending from the extension portion 122, spaced by a first distance 90 and perpendicular to the motion direction of the impelling plate 12.
  • the yarn feeding units 13 are arranged side by side, and each of the yarn feeding units 13 is provided sequentially with a yarn feeding plate 14, a yarn clamping plate 15, a mobile blade plate 16 and a fixed blade plate 17.
  • the yarn feeding plate 14 includes a curved portion 141 that has a length equal to the first distance 90 and is parallel to the motion direction of the impelling plate 12, and a yarn feeding portion 142 extending from the curved portion 141 and perpendicular to the motion direction of the impelling plate 12.
  • the yarn feeding portion 142 is for placing a yarn.
  • the yarn clamping plate 15 includes a plurality of guide columns 151 disposed correspondingly to the curved portion 141 such that the yarn feeding plate 14 is caused to perform a two-dimensional motion when pushed by the impelling plate 12, and two through holes 152 correspondingly provided between the two pushing portions 123.
  • the mobile blade plate 16 includes a body portion 161, a cutting blade portion 162 extending from the body portion 161 and perpendicular to the motion direction of the impelling plate 12, and two control rods 163 provided on the body portion 161 and respectively protruding towards the two through holes 152 to cause the mobile blade plate 16 to be impelled by one of the pushing portions 123 and to perform a one-dimensional motion.
  • a second distance 91 smaller than the first distance 90 is present between the two control rods 163. More specifically, the length of the mobile blade plate 16 is smaller than that of the yarn feeding plate 14, such that, during the displacement process, the impelling plate 12 first pushes the yarn feeding plate 14 and then pushes the mobile blade plate 16.
  • the electronic yarn changing device 10 includes an electrical control unit 18 connected to the driving units 11.
  • the electrical control unit 18 may be further connected to a computer device to obtain information required for weaving.
  • the electrical control unit 18 includes a memory element (not shown) for a writer to write weaving information.
  • the electronic yarn changing device 10 further includes two protective casing plates 19 disposed on two opposite outer sides of the yarn feeding units 13.
  • each of the feeding units 13 can be controlled to perform the yarn dispensing operation or the yarn withholding operation.
  • the circular knitting machine performs color-changing yarn changing, more than just one of the yarn feeding units 13 are caused to operate. That is, one of the yarn feeding units 13 providing a yarn of another color first performs the yarn dispensing operation, such that a hook needle (not shown) on the circular knitting machine first hooks the above yarn, and then another of the yarn feeding units 13 originally performing a yarn feeding operation performs the yarn withholding operation.
  • a hook needle not shown
  • the state of the electronic yarn changing device 10 is as shown in Fig. 6A .
  • the driving unit 11 receives the electronic signal and becomes activated
  • the impelling plate 12 is pushed by the driving unit 11 to perform a one-dimensional motion to move towards a first direction 92.
  • the yarn feeding plate 14 is pushed by the impelling plate 12 to also move towards the first direction 92.
  • the yarn feeding plate 14 receives an effect of the plurality of guide columns 151 such that the yarn feeding plate 14 performs a two-dimensional motion according to the pattern of the curved portion 141, allowing the yarn on the yarn feeding plate 14 to enter a working area of the hook needle and be hooked by the hook needle.
  • a final state of the electronic yarn changing device 10 in the yarn dispensing operation is as shown in Fig. 6C .
  • the yarn feeding plate 14 similarly receives the effect of the guide columns 151 such that the yarn feeding plate 14 performs a two-dimensional motion according to the pattern of the curved portion 141, and guides the yarn originally being knitted to move away from the working area of the hook needle, as shown in Fig. 7B and Fig. 7C .
  • the yarn is hooked by the mobile blade plate 16, which moves towards the second direction 93 as the control rod 163 is pushed by the impelling plate 12.
  • the yarn is then clamped between the mobile blade plate 16 and the yarn clamping plate 15, and is then cut off once the mobile blade plate 16 moves to a position where the yarn touches the fixed blade plate 17. More details of the cutting operation can be referred from the U.S. Patent No. 9,441,317 , and shall be omitted herein.
  • these driving units 11 are arranged in a matrix. Taking the electronic yarn changing device 10 capable of six-color yarn changing in Fig. 2 for example, these driving units 11 are stacked and arranged in a 2x3 matrix. On the other hand, when these driving units 11 are arranged in a matrix, these impelling plates 12 respectively extend into gaps among these driving units 11, so as to prevent from interfering operations of other components. Further, the arrangement of this embodiment further minimizes the thickness of the electronic yarn changing device 10, further increasing the number of yarns that can be fed by the circular knitting machine.
  • each driving unit 11 may be a pneumatic tank.
  • the pneumatic tank includes a tank 111 and a pushing rod 112 penetrating the tank 111.
  • each of the impelling plates 12 includes two of the connecting portions (121, 124),which are spaced and respectively connected the ends of the pushing rod 112.
  • the two connecting portions (121, 124) are driven and moved to further push the impelling plate 12.
  • the driving unit 11 may also be a stepping motor 20.
  • An output shaft 201 of the stepping motor 20 may be provided with a gear 202, and the connecting portion 121 of the impelling plate 12 may be implemented by a rack.
  • the gear 202 pushes the connecting portion 121 implemented in form of a rack to move the impelling plate 12.
  • the yarn clamping plate 15 and the fixed blade plate 17 respectively comprise a plurality of installation holes (153, 171).
  • Each of the plurality of guide columns 151 is formed by a horizontal shaft penetrated through the plurality of installation holes (153, 171) which are located on the same axis line.

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

Claims (9)

  1. Dispositif de changement de fil électronique (10) pour une machine à tricoter circulaire, comprenant :
    au moins deux unités d'entraînement (11), commandées individuellement par un signal électronique ; le dispositif de changement de fil électronique étant caractérisé par le fait qu'il comprend en outre :
    au moins deux plaques de propulsion (12), assemblées respectivement aux unités d'entraînement (11), entraînées respectivement par les unités d'entraînement (11) pour réaliser un mouvement unidimensionnel, chacune des plaques de propulsion (12) comprenant au moins une partie de liaison (121) montée avec l'unité d'entraînement (11), une partie d'extension (122) s'étendant à partir de la partie de liaison (121) et parallèle à une direction de mouvement de la plaque de propulsion (12), et deux parties de poussée (123) s'étendant individuellement à partir de la partie d'extension (122), espacées d'une première distance (90) et perpendiculaires à la direction de mouvement de la plaque de propulsion (12) ; et
    au moins deux unités d'alimentation de fil (13), disposées côte à côte, chacune des unités d'alimentation de fil (13) comportant séquentiellement une plaque d'alimentation de fil (14), une plaque de serrage de fil (15), une plaque de lame mobile (16) et une plaque de lame fixe (17), la plaque d'alimentation de fil (14) comprenant une partie incurvée (141) ayant une longueur égale à la première distance (90) et parallèle à la direction de mouvement de la plaque de propulsion (12), et une partie d'alimentation de fil (142) s'étendant à partir de la partie incurvée (141) et perpendiculaire à la direction de mouvement de la plaque de propulsion (12), la plaque de serrage de fil (15) comprenant une pluralité de colonnes de guidage (151) disposées en correspondance de la partie incurvée (141) de telle sorte que la plaque d'alimentation de fil (14) est amenée à réaliser un mouvement bidimensionnel lorsque poussée par la plaque de propulsion (12), et des trous traversants (152) prévus de manière correspondante entre deux parties de poussée (123), la plaque de lame mobile (16) comprenant une partie corps (161), une partie lame de coupe (162) s'étendant à partir de la partie corps (161) et perpendiculaire à la direction de mouvement de la plaque de propulsion (12), et deux tiges de commande (163) prévues sur la partie corps (161) et faisant respectivement saillie vers les deux trous traversants (152) pour amener la plaque de lame mobile (16) à être propulsée par l'une des parties de poussée (123) et réaliser un mouvement unidimensionnel, et une seconde distance (91) inférieure à la première distance (90) étant présente entre les deux tiges de commande (163).
  2. Dispositif de changement de fil électronique (10) pour une machine à tricoter circulaire selon la revendication 1, dans lequel chacune des unités d'entraînement (11) est un réservoir pneumatique.
  3. Dispositif de changement de fil électronique (10) pour une machine à tricoter circulaire selon la revendication 2, dans lequel le réservoir pneumatique comprend un réservoir (111) et une tige de poussée (112) pénétrant dans le réservoir (111), et chacune des plaques de propulsion (12) comprend deux des parties de liaison (121, 124) qui sont espacées et reliées respectivement à des extrémités de la tige de poussée (112).
  4. Dispositif de changement de fil électronique (10) pour une machine à tricoter circulaire selon la revendication 2 ou 3, dans lequel la plaque de serrage de fil (15) et la plaque de lame fixe (17) comprennent respectivement une pluralité de trous d'installation (153, 171), et chacune de la pluralité de colonnes de guidage (151) est formée par un arbre horizontal pénétrant à travers la pluralité de trous d'installation (153, 171) qui sont situés sur la même ligne axiale.
  5. Dispositif de changement de fil électronique (10) pour une machine à tricoter circulaire selon la revendication 1 ou 2, dans lequel les unités d'entraînement (11) sont disposées dans une matrice.
  6. Dispositif de changement de fil électronique (10) pour une machine à tricoter circulaire selon la revendication 5, comprenant en outre deux plaques de logement de protection (19), qui sont disposées sur deux côtés externes opposés des unités d'alimentation de fil (13), respectivement.
  7. Dispositif de changement de fil électronique (10) pour une machine à tricoter circulaire selon la revendication 1 ou 2, comprenant en outre une unité de commande électrique (18) reliée aux unités d'entraînement (11).
  8. Dispositif de changement de fil électronique (10) pour une machine à tricoter circulaire selon la revendication 1, dans lequel chacune des unités d'entraînement (11) est un moteur pas-à-pas (20).
  9. Dispositif de changement de fil électronique (10) pour une machine à tricoter circulaire selon la revendication 8, dans lequel le moteur pas-à-pas (20) comprend un arbre de sortie (201) et un engrenage (202) disposé à une extrémité de l'arbre de sortie (201), et la partie de liaison (121) de la plaque de propulsion (12) est une crémaillère.
EP17206372.9A 2017-12-11 2017-12-11 Dispositif de changement de fil électronique pour machine à tricoter circulaire Active EP3495539B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES17206372T ES2776732T3 (es) 2017-12-11 2017-12-11 Dispositivo electrónico de cambio de hilo para máquina de tejer circular
EP17206372.9A EP3495539B1 (fr) 2017-12-11 2017-12-11 Dispositif de changement de fil électronique pour machine à tricoter circulaire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17206372.9A EP3495539B1 (fr) 2017-12-11 2017-12-11 Dispositif de changement de fil électronique pour machine à tricoter circulaire

Publications (2)

Publication Number Publication Date
EP3495539A1 EP3495539A1 (fr) 2019-06-12
EP3495539B1 true EP3495539B1 (fr) 2020-02-12

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ID=60654831

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Application Number Title Priority Date Filing Date
EP17206372.9A Active EP3495539B1 (fr) 2017-12-11 2017-12-11 Dispositif de changement de fil électronique pour machine à tricoter circulaire

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EP (1) EP3495539B1 (fr)
ES (1) ES2776732T3 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1586864A (en) 1976-09-18 1981-03-25 Wildt Mellor Bromley Ltd Yarn feed and yarn change mechanism for a knitting machine
DE2908586A1 (de) 1978-03-17 1979-09-27 Wildt Mellor Bromley Ltd Ringelapparat fuer eine strickmaschine
JPS5747956A (en) 1980-09-04 1982-03-19 Fukuhara Seiki Seisakusho Yarn supply switching apparatus of circular knitting machine
JP2005042260A (ja) 2003-07-24 2005-02-17 Precision Fukuhara Works Ltd 丸編機における給糸切換装置及び方法
DE602004018448D1 (de) * 2003-10-15 2009-01-29 Mbi Technology Co Ltd Rundstrickmaschine für Intarsien-Gestrickstücke
ITMI20061877A1 (it) 2006-09-29 2008-03-30 Santoni Spa Dispositivo per l'alimentazione dei fili per macchine per maglieria,particolarmente per macchine circolari per maglieria
ITMI20071742A1 (it) 2007-09-11 2009-03-12 Santoni & C Spa Macchina per maglieria, calzetteria o simile con dispositivo per l'alimentazione del filo agli aghi.
ITBS20070164A1 (it) 2007-10-24 2009-04-25 Santoni & C Spa Dispositivo jacquard per lo spostamento selettivo di passette guidafilo in una macchina tessile
CN102758309A (zh) * 2011-04-26 2012-10-31 山德霓股份公司 用于清理针织机的纺织头且带有至少一个接近纺织头的气动执行器的装置
ITBS20130137A1 (it) 2013-10-02 2015-04-03 Santoni & C Spa Macchina tessile circolare
US9441317B1 (en) 2015-06-04 2016-09-13 Pai Lung Machinery Mill Co., Ltd. Yarn clipping and cutting structure for striping apparatus of circular knitting machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3495539A1 (fr) 2019-06-12
ES2776732T3 (es) 2020-07-31

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