EP0875613A2 - Rundstrickmaschine mit Vorrichtung zum Übertragen von auf Naden einer Nadelzylinderhälfte geformten Strickmaschen zu den Nadeln der anderen Nadelzylinderhälfte - Google Patents

Rundstrickmaschine mit Vorrichtung zum Übertragen von auf Naden einer Nadelzylinderhälfte geformten Strickmaschen zu den Nadeln der anderen Nadelzylinderhälfte Download PDF

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Publication number
EP0875613A2
EP0875613A2 EP98105734A EP98105734A EP0875613A2 EP 0875613 A2 EP0875613 A2 EP 0875613A2 EP 98105734 A EP98105734 A EP 98105734A EP 98105734 A EP98105734 A EP 98105734A EP 0875613 A2 EP0875613 A2 EP 0875613A2
Authority
EP
European Patent Office
Prior art keywords
needle cylinder
dial
axis
needles
cylinder
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Withdrawn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
EP98105734A
Other languages
English (en)
French (fr)
Other versions
EP0875613A3 (de
Inventor
Francesco Lonati
Tiberio Lonati
Ettore Lonati
Fausto Lonati
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.)
Macchine Tessili Circolari MATEC SpA
Original Assignee
Macchine Tessili Circolari MATEC SpA
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 Macchine Tessili Circolari MATEC SpA filed Critical Macchine Tessili Circolari MATEC SpA
Publication of EP0875613A2 publication Critical patent/EP0875613A2/de
Publication of EP0875613A3 publication Critical patent/EP0875613A3/de
Withdrawn legal-status Critical Current

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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
    • D04B15/94—Driving-gear not otherwise provided for
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/42—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration
    • D04B9/46—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration stockings, or portions thereof
    • 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
    • D04B15/14—Needle cylinders
    • D04B15/16—Driving devices for reciprocatory action
    • 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
    • D04B15/18—Dials
    • 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
    • D04B15/32—Cam systems or assemblies for operating knitting instruments
    • D04B15/322—Cam systems or assemblies for operating knitting instruments in circular knitting machines with needle cylinder and dial
    • 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
    • D04B15/32—Cam systems or assemblies for operating knitting instruments
    • D04B15/34—Cam systems or assemblies for operating knitting instruments for dials
    • 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
    • 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
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B37/00—Auxiliary apparatus or devices for use with knitting machines
    • D04B37/02—Auxiliary apparatus or devices for use with knitting machines with weft knitting machines
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/42—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration
    • D04B9/46—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration stockings, or portions thereof
    • D04B9/56—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration stockings, or portions thereof heel or toe portions

Definitions

  • the present invention relates to a circular hosiery-knitting machine with a device for transferring or carrying loops of knitting formed by the needles of one half of the needle cylinder to the needles of the other half of the needle cylinder, particularly for producing tubular items which are closed at one of their longitudinal ends.
  • Circular hosiery-knitting machines are known for producing items which are closed at their end directly on the hosiery-knitting machine, thus avoiding the need to subject the item to subsequent sewing or looping to close the end.
  • European patent application no. 96111186.1 in the name of the same Applicant disclosed a method for forming closed-toe hosiery with a single-cylinder circular machine which has, at the upper end of the needle cylinder, a half-dial which can be turned over about a diametrical axis.
  • the half-dial has a plurality of hooks which can move, along directions which are radial to the needle cylinder, within slots formed for this purpose in the half-dial.
  • the tip of the hooks can be extracted from the half-dial so that each one arranges itself between two contiguous needles of one half of the needle cylinder in order to receive the thread that is dispensed at a feed or drop of the machine and is knitted by the needles of the needle cylinder half between which the hooks are arranged.
  • the method described in this patent application comprises a first step, during which the needle cylinder is actuated with n oscillations about its own axis with an oscillation angle of substantially 180 o , so as to move the needle cylinder half faced by the half-dial so that it passes in front of a feed or drop of the machine.
  • the takeup elements i.e., the hooks
  • the takeup elements are extracted radially with one of their ends from the half-dial towards the needles of the machine, and at least one thread is dispensed at the machine feed being considered, lifting into the active position and uniformly mutually spaced, at each oscillation, 1/n of the needles of the needle cylinder half that faces the half-dial, and further varying the needles that are moved into the active position in the subsequent oscillation or oscillations and lowering the needles after taking up the thread or threads, which rests or rest on the takeup elements.
  • the takeup elements are retracted towards the half-dial, retaining the thread or threads rested thereon.
  • heel knitting is performed with the needles of the needle cylinder half that faces the half-dial.
  • the half-dial is turned over about its diametrical axis and is arranged so as to face the other half of the needle cylinder.
  • the thread or threads held by the takeup elements is or are transferred to the needles of the other half of the needle cylinder, and in a sixth step the machine is actuated so as to complete the item as a continuation of the previously performed knitting.
  • a half-dial which can be turned over about a diametrical axis, as disclosed for example in Italian patent no. 676,845, or a half-ring which is arranged around the needle cylinder proximate to its upper end and can also be turned over about a diametrical axis, as disclosed for example in Italian patent application FI93A-128.
  • Said half-ring is also provided with a plurality of hooks which are accommodated in radial slots and can be extracted from the half-ring to transfer the loops of knitting from the needles of one half of the needle cylinder to the needles of the other half of the needle cylinder.
  • the function of the half-dial or half-ring is to simply retain and carry loops, knitted by the needles of one half of the needle cylinder, to the needles of the other half of the needle cylinder, or to transfer loops from the needles of one half of the needle cylinder to the needles of the other half of the needle cylinder.
  • the half-dial or half-ring for performing these operations are arranged outside the needle cylinder at its upper end.
  • the aim of the present invention is to solve the above problems, providing a circular hosiery-knitting machine with a device for transferring or carrying loops of knitting formed by the needles of one half of the needle cylinder to the needles of the other half of the needle cylinder so as to be able to produce, in particular, items which are closed at one of their axial ends, without penalizing, owing to the presence of said device, other possible knittings of the machine.
  • an object of the invention is to provide a machine with a device which in particular does not hinder the actuation of the sinkers in terry knitting.
  • Another object of the invention is to provide a machine with a device for transferring or carrying loops which, when not used, is not a hindrance in the needle work area.
  • Another object of the invention is to provide a machine which provides high precision and reliability in operation.
  • a circular hosiery-knitting machine with a device for transferring or carrying loops of knitting formed by the needles of one half of the needle cylinder to the needles of the other half of the needle cylinder, said machine comprising at least one needle cylinder which can be rotated about its own axis and a device for transferring or carrying loops formed by the needles of one half of the needle cylinder to the needles of the other half of the needle cylinder, said device comprising a half-dial which has means for taking up the threads or loops, said takeup means being movable on command along radial directions with respect to said half-dial in order to take up and retain or release said threads or loops, said half-dial being able to turn over about a diametrical axis of the needle cylinder in order to face, through said takeup means, the needles of one half of the needle cylinder or the needles of the other half of the needle cylinder, characterized in that said
  • the machine according to the invention comprises, in a per se known manner, a needle cylinder 2 which can be rotationally actuated about its own axis 2a and has, on its curved surface, a plurality of axial slots 3 inside which the needles 4 are accommodated.
  • the machine according to the invention also comprises a device, generally designated by 5, for transferring or carrying loops of knitting formed by the needles of one half of the needle cylinder to the needles of the other half of the needle cylinder.
  • Said device comprises a half-dial 6 provided with means for taking up the threads or loops; said takeup means can move on command along radial directions with respect to the half-dial 6 in order to take up and retain or release the loops of knitting or the threads that compose loops of knitting.
  • the half-dial 6 can be turned over about a diametrical axis 7 of the needle cylinder 2 in order to face, through the above takeup means, the needles of one half of the needle cylinder or the needles of the other half of the needle cylinder.
  • the half-dial 6 is accommodated inside the needle cylinder 2.
  • the half-dial 6 is mounted on a supporting element 8 which is accommodated inside the needle cylinder 2 and can move on command along the axis 2a of the needle cylinder.
  • the supporting element 8 is composed of an outer cylinder 9 which is arranged internally and coaxially to the needle cylinder 2.
  • the external cylinder 9 has, along its skirt, an axial slot 10 coupled to a key which is correspondingly provided inside the needle cylinder 2 so that the outer cylinder 9 of the supporting element 8 is constantly connected, in its rotation about the axis 2a, to the needle cylinder 2 though maintaining the ability to perform a translatory motion along the axis 2a.
  • the supporting element 8 also comprises an inner cylinder which is arranged internally and coaxially to the outer cylinder 9 and is divided into two parts which are designated by 11 and 12.
  • the part 11 of the inner cylinder faces, with one of its flat surfaces, the half-dial 6 and faces, with its other flat surface, the part 12 which is connected to the cylinder support 13 or to the supporting structure of the machine, allowing only a translatory motion along the axis 2a, without the possibility to rotate about said axis 2a.
  • a connecting pin 14 is interposed between the part 12 and the part 11, as shown in particular in figure 2, and rotationally connects the part 11 to the part 12. More particularly, the pin 14 is accommodated in an adapted seat 15 formed in the part 11 and is pushed by a spring 16 toward the part 12, in which a corresponding seat 17 for the end of the pin 14 is provided.
  • a magnetic coupling is provided between the part 11 and the outer cylinder 9 and is constituted for example by permanent magnets 20 or ferromagnetic plates which are arranged on the inner curved surface of the outer cylinder 9 and by ferromagnetic plates 21 or permanent magnets arranged on the outer curved surface of the part 11, which face the permanent magnets 20, so as to establish a magnetic coupling between the outer cylinder 9 and the part 11 of the inner cylinder.
  • the extent of this coupling is such that it is effective only when the pin 14 is disengaged from the seat 17, i.e., when the part 11 is disengaged from the part 12 of the inner cylinder.
  • the half-dial 6 covers approximately 180 o around the axis 2a and is substantially symmetrical to a diametrical plane, designated by 23, of the needle cylinder which is arranged at right angles to the diametrical axis 7, as shown in particular in figure 4.
  • the half-dial 6 is further pivoted, by means of a pair of pivots 25a and 25b and about the diametrical axis 7, to two shoulders 24a and 24b of the outer cylinder 9 which rise in two diametrically opposite regions of its flat surface which supports the half-dial 6.
  • the takeup means for the loops or the thread comprise a plurality of hooks 26 which are slidingly accommodated in suitable radial slots formed in the half-dial 6.
  • Each hook 26 is provided with an upper heel 26a and a lower heel 26b which protrude respectively in an upward region and in a downward region from the half-dial so as to face and engage, according to the position assumed by the half-dial 6 in turning over about the diametrical axis 7, actuation cams which are arranged on the flat surface of the part 11 of the inner cylinder that is directed towards the half-dial 6.
  • the actuation cams comprise an extraction cam 30, which is shaped so as to produce a movement of the hooks 26 along the corresponding slots of the half-dial 6 in the opposite direction with respect to the axis 2a of the needle cylinder, and retraction cams 31, which are shaped so as to move the hooks 26 in the opposite direction.
  • the extraction cam 30 and the retraction cams 31 can move on command parallel to the axis 2a, for example by means of pneumatic cylinders 32 which are accommodated inside the part 11 and are fed by means of ducts 33 which are connected to the part 12 of the inner cylinder, so that said cams can be activated, i.e., moved into a position in which they interfere with the lower or upper heels of the hooks 26, and deactivated, i.e., moved into a position in which they do not affect the heels of the hooks 26.
  • the hooks 26 preferably occupy an arc of the half-dial 6 which is arranged symmetrically with respect to the diametrical plane 23 and preferably covers an angle of less than 180 o about the axis 2a.
  • the supporting element 8 and the half-dial 6 have, around the axis 2a of the needle cylinder, a recess 34, 35 to allow the passage of the item.
  • the means that turn over the half-dial 6 about the diametrical axis 7 are conveniently constituted by a step motor 37 which is associated with the suction hose 36, as shown in detail in figure 9, and which by means of a bevel gear pair 38 and 39, moves a Bowden cable 40 which slides inside a sheath 41, reaching a pivot 42 which is arranged in an intermediate region of the extension of the half-dial 6, whereto it is coupled by means of a fork-like element 43.
  • a bevel gear 38 is keyed on the output shaft of the step motor 37 and meshes with the bevel gear 39, which is supported, so that it can rotate about its own axis, by a frame 45 which is fixed to the suction hose 36 and also supports the step motor 37.
  • a frame 45 which is fixed to the suction hose 36 and also supports the step motor 37.
  • a female thread 46 with which an externally threaded secondary shaft 47 engages; said secondary shaft is fixed to the end of the Bowden cable 40 that is opposite to the end that engages the half-dial 6.
  • step motor 50 which is mounted on the suction hose 36 and engages, by means of its output shaft 51, which is externally threaded, a female thread which is formed in a block 52 which is fixed to the supporting structure 53 of the machine.
  • the actuation of the step motor 50 moves the suction hose 36 and therefore the supporting element 8 along the axis 2a of the needle cylinder.
  • the device for transferring or carrying the loops formed by the needles of one half of the needle cylinder to the needles of the other half of the needle cylinder has been described with reference to a single-cylinder circular machine which can have, above the needle cylinder, a dial 60 of a conventional type, it can in any case also be installed on a double-cylinder circular machine and accommodated in the lower needle cylinder or preferably in the upper needle cylinder.
  • the half-dial 6, through the actuation of the step motor 50, is moved from the inactive position, shown in figure 10, to the needle work area 4, as shown in figure 11, and the needle cylinder 2 is actuated with n oscillations about its own axis 2a.
  • the extraction cam 30 is moved into the active position, so as to make the hooks 26 protrude from the half-dial 6, thus placing the tip of each hook between two contiguous needles of a first half of the needle cylinder which passes in front of a feed or drop of the machine, taking up the thread that is dispensed at said feed or drop.
  • the dispensed thread is taken up by the needles 4 and rests on the tip of the hooks 26, as already described in the above cited patent application, to which reference is made for the sake of completeness.
  • the extraction cam 30 is deactivated and the retraction cams 31 (figure 12) are activated sequentially.
  • the n initial oscillations can be limited to a single oscillation, i.e., to a single outgoing motion, in one direction, of the needle cylinder 2 about its own axis 2a.
  • the half-dial 6 is moved along the axis 2a so as to arrange itself below the needle work area, while the needle cylinder 2 continues to be actuated with an alternating motion about its axis 2a in order to complete the heel knitting that forms the tip 80 of the item, as shown in particular in figure 13.
  • the part 11 can optionally be disengaged from the part 12, so as to minimize wear between of the parts of the half-dial 6 and the part 11 of the supporting element 8.
  • the extraction cam 30 and one or more retraction cams 31 are actuated sequentially so as to transfer the loop portions retained by the hooks 26 to the needles 4 of the other half of the needle cylinder, so that the portion 80 of the item, formed earlier, is peripherally engaged by the needles of the two halves of the needle cylinder ( Figures 15 and 16).
  • the item obtained at the end of the knitting process is closed at its tip or longitudinal end.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP98105734A 1997-04-30 1998-03-30 Rundstrickmaschine mit Vorrichtung zum Übertragen von auf Naden einer Nadelzylinderhälfte geformten Strickmaschen zu den Nadeln der anderen Nadelzylinderhälfte Withdrawn EP0875613A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT97MI001026A IT1291303B1 (it) 1997-04-30 1997-04-30 Macchina circolare per calzetteria o maglieria con dispositivo per operare il trasferimento o il trasporto di boccole di maglia lavorate
ITMI971026 1997-04-30

Publications (2)

Publication Number Publication Date
EP0875613A2 true EP0875613A2 (de) 1998-11-04
EP0875613A3 EP0875613A3 (de) 1999-11-03

Family

ID=11377057

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98105734A Withdrawn EP0875613A3 (de) 1997-04-30 1998-03-30 Rundstrickmaschine mit Vorrichtung zum Übertragen von auf Naden einer Nadelzylinderhälfte geformten Strickmaschen zu den Nadeln der anderen Nadelzylinderhälfte

Country Status (5)

Country Link
EP (1) EP0875613A3 (de)
JP (1) JPH10310958A (de)
KR (1) KR19980081701A (de)
CZ (1) CZ134498A3 (de)
IT (1) IT1291303B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003033798A1 (en) * 2001-10-17 2003-04-24 Giuseppe Cavalli Tensioning device for manufactured articles in circular knitting machines
WO2007110894A3 (en) * 2006-03-28 2007-12-21 N T A S R L Machine for automatically closing the end edge of a knitted tubular fabric, such as a stocking or a sock
CN104499175A (zh) * 2013-08-27 2015-04-08 徐心亿 一种改进的织袜机
CN104593940A (zh) * 2015-01-27 2015-05-06 绍兴汉翔精密机械制造有限公司 一种高速丝袜机机头传动装置
CN111118722A (zh) * 2018-10-31 2020-05-08 泉州福舜机械有限公司 一种立体鞋面机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20042495A1 (it) * 2004-12-23 2005-03-23 Santoni & C Spa Procedimento per eseguire il trasferimento di porzioni di maglia prodotte da un gruppo di aghi ad un altro gruppo di aghi di una frontura in macchine circolari per maglieria o per calzetteria a due fronture o simili
USD961627S1 (en) * 2019-06-17 2022-08-23 Santoni S.P.A. Textile machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0635593A1 (de) * 1993-07-12 1995-01-25 FABRITEX S.r.l Verfahren und Vorrichtung zum Verbinden von den zwei Rändern eines Schlaugartig gestrickten Produkts während seiner Herstellung
WO1995031595A1 (en) * 1994-05-17 1995-11-23 Golden Lady S.P.A. Device for closing the initial end of a knitted article such as a sock or other
WO1995034702A1 (en) * 1994-06-16 1995-12-21 Golden Lady S.P.A. Device for the automatic initial formation of a closed toe in a tubular knitted article on circular knitting machines
EP0756029A1 (de) * 1995-07-28 1997-01-29 MATEC S.r.l. Verfahren zur Herstellung von Socken oder dergleichen mit geschlossenem Zehenteil auf einer Einzelzylinderrundstrickmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0635593A1 (de) * 1993-07-12 1995-01-25 FABRITEX S.r.l Verfahren und Vorrichtung zum Verbinden von den zwei Rändern eines Schlaugartig gestrickten Produkts während seiner Herstellung
WO1995031595A1 (en) * 1994-05-17 1995-11-23 Golden Lady S.P.A. Device for closing the initial end of a knitted article such as a sock or other
WO1995034702A1 (en) * 1994-06-16 1995-12-21 Golden Lady S.P.A. Device for the automatic initial formation of a closed toe in a tubular knitted article on circular knitting machines
EP0756029A1 (de) * 1995-07-28 1997-01-29 MATEC S.r.l. Verfahren zur Herstellung von Socken oder dergleichen mit geschlossenem Zehenteil auf einer Einzelzylinderrundstrickmaschine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003033798A1 (en) * 2001-10-17 2003-04-24 Giuseppe Cavalli Tensioning device for manufactured articles in circular knitting machines
WO2007110894A3 (en) * 2006-03-28 2007-12-21 N T A S R L Machine for automatically closing the end edge of a knitted tubular fabric, such as a stocking or a sock
CN104499175A (zh) * 2013-08-27 2015-04-08 徐心亿 一种改进的织袜机
CN104593940A (zh) * 2015-01-27 2015-05-06 绍兴汉翔精密机械制造有限公司 一种高速丝袜机机头传动装置
CN111118722A (zh) * 2018-10-31 2020-05-08 泉州福舜机械有限公司 一种立体鞋面机
CN111118722B (zh) * 2018-10-31 2021-03-05 泉州福舜机械有限公司 一种立体鞋面机

Also Published As

Publication number Publication date
KR19980081701A (ko) 1998-11-25
ITMI971026A0 (de) 1997-04-30
IT1291303B1 (it) 1999-01-07
CZ134498A3 (cs) 1998-11-11
JPH10310958A (ja) 1998-11-24
EP0875613A3 (de) 1999-11-03
ITMI971026A1 (it) 1998-10-30

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