EP0962569A2 - Métier à tricoter circulaire à grand adaptabilité pour bas et similaires avec multiples systèmes ou alimentations - Google Patents

Métier à tricoter circulaire à grand adaptabilité pour bas et similaires avec multiples systèmes ou alimentations Download PDF

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Publication number
EP0962569A2
EP0962569A2 EP99109275A EP99109275A EP0962569A2 EP 0962569 A2 EP0962569 A2 EP 0962569A2 EP 99109275 A EP99109275 A EP 99109275A EP 99109275 A EP99109275 A EP 99109275A EP 0962569 A2 EP0962569 A2 EP 0962569A2
Authority
EP
European Patent Office
Prior art keywords
cam
needles
needle cylinder
sub
heel
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.)
Pending
Application number
EP99109275A
Other languages
German (de)
English (en)
Other versions
EP0962569A3 (fr
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 EP0962569A2 publication Critical patent/EP0962569A2/fr
Publication of EP0962569A3 publication Critical patent/EP0962569A3/fr
Pending 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
    • D04B15/32—Cam systems or assemblies for operating knitting instruments
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/26—Circular knitting machines with independently-movable needles for producing patterned fabrics
    • D04B9/28—Circular knitting machines with independently-movable needles for producing patterned fabrics with colour patterns

Definitions

  • the present invention relates to a highly versatile circular knitting machine for hosiery and the like with multiple drops or feeds.
  • a circular knitting machine for hosiery and the like with multiple drops or feeds comprising a needle cylinder and a needle actuation cam apron which faces the lateral surface of said needle cylinder; said needle cylinder having, on its lateral surface, a plurality of axial slots, each of which accommodates a sub-needle and a needle which have heels which protrude radially from the needle cylinder and can engage paths formed by cams of said cam apron for the movement of the needles along the corresponding slot of the needle cylinder following the actuation of the needle cylinder with a rotary motion about its own axis with respect to said cam apron, characterized in that it comprises, upstream of at least one feed or drop along the direction of rotation of the needle cylinder with respect to the cam apron: a first cam, which can be engaged by a heel of the sub-needles and is adapted to raise the needles to the tuck-
  • the machine comprises, in a per se known manner, a needle cylinder which has a vertical axis and around which there is a cam apron generally designated by the reference numeral 1.
  • the needle cylinder can be actuated so as to rotate about its own axis with respect to the cam apron 1.
  • the needle cylinder 10 has, in a per se known manner, on its lateral surface, a plurality of slots, each of which accommodates a needle 12 and, below said needle, a sub-needle 13.
  • a selector 14 is arranged below the sub-needle 13 and is actuated by adapted selection devices, arranged around the needle cylinder, upstream of each feed or drop of the machine, as will become apparent hereinafter.
  • the cam apron 1 comprises, upstream of at least one feed or drop of the machine, designated by the line 60, along the direction in which the needle cylinder rotates with respect to the cam apron 1: a first cam 21, which can be engaged by the heel 16 of the sub-needles 13 and is adapted to lift the needles 12 to the tuck-stitch position, and a second cam 22, which is located downstream of the first cam 21 and can be engaged by the heel 16 of the sub-needles 13 in order to lift the needles 12 to the drop-stitch position.
  • first selection device which acts on the selectors 14 at a point 24 and, by means of said selectors, on the sub-needles 13 for their engagement or nonengagement with the first cam 21, and between the first cam 21 and the second cam 22 there is a second selection device which acts on the selectors 14 at the point 25 and, by means of said selectors, on the sub-needles 13 in order to cause their engagement or nonengagement with the second cam 22.
  • the cam apron comprises a second auxiliary cam 26 which is arranged above the first cam 21 and the second cam 22.
  • the second auxiliary cam 26 has a descending portion 26a which is arranged between the first cam 21 and the second cam 22 and can be engaged by a heel 12a of the needles 12 in order to lower the needles 12 that engage said descending portion 26a to a lower level than the needles 12 raised by the second cam 22.
  • a conventional lowering cam 27 which is movable on command radially to the needle cylinder from an active position, in which it is close to the needle cylinder in order to interfere with the heel 12a of the needles 12 raised by the first cam 21 or by the second cam 22, to an inactive position, in which it is spaced from the needle cylinder, with respect to the active position, so as to not interfere with the heels 12a of the needles 12.
  • cams of the cam apron that cooperate with the above described cams to form paths for the heels of the needles 12, of the sub-needles 13 and of the selectors 14 and are of a conventional type are not described further for the sake of brevity.
  • Figure 2 illustrates a first kind of knitting, for which the first auxiliary cam 23 is in the active position while the second auxiliary cam 26 is in the inactive position and is not shown for the sake of clarity.
  • the selection device that acts at the point 24, i.e., directly upstream of the first cam 21, acts by means of the selectors 14 on preset sub-needles 13, causing their portion 15 to pass from the inactive position to the active position, so that their heel 16 engages the first cam 21.
  • the corresponding needles 12 are thus raised initially by the first cam 21 and are then raised further following the engagement of the heel 18 of the sub-needles 13 with the first auxiliary cam 23 and are raised to a drop-stitch position.
  • the raised needles 12 can take up the yarn or yarns supplied at the feed being considered, producing drop stitches.
  • This operating condition can be used for example in the formation of plain knitting, with the possibility to use all the yarn fingers 80 of a drop to feed the active needles 12.
  • the first auxiliary cam 23 is in the inactive position and therefore is not shown, while the second auxiliary cam 26 is in the active position.
  • the first selection device which acts at the point 24, causes preset sub-needles 13 to engage the first cam 21 with their heel 16.
  • the corresponding needles 12 are raised to the held-stitch position, consequently forming held stitches.
  • This operating condition can be used for example in the laying-in of the elastic of hosiery. In practice, the elastic yarn is taken up by the needles 12 raised into the held-stitch position without dropping the loop formed previously due to the feeding of the yarn to said needles 12 at a preceding feed.
  • the first auxiliary cam 23 is in the active position, while the second auxiliary cam 26 is in the inactive position and is therefore not shown.
  • Some sub-needles 13 are selected at the point 24 and engage the first cam 21 with their heel 16, while other sub-needles 13 are selected at the point 25 and engage the second cam 22 with their heel 16.
  • both the needles 12 that correspond to the sub-needles 13 that engage the first cam 21 and the needles 12 that correspond to the sub-needles 13 that engage the second cam 22 form drop stitches.
  • the needles 12 that correspond to the sub-needles that engage the first cam 21 have available, and can therefore take up, the yarn that is dispensed from a larger number of yarn fingers 80 than available for the needles 12 that correspond to the sub-needles 13 that have engaged the second cam 22.
  • This operating condition can be used for example to form reinforced portions of knitting.
  • both the auxiliary cam 23 and the second auxiliary cam 26 are in the active position and the sub-needles 13 are selected both at the point 24 and at the point 25. In this way, some sub-needles 13 engage the first cam 21 with their heel 16, while other sub-needles 13 engage the second cam 22 with their heel 16.
  • the needles 12 that correspond to the sub-needles 13 that have engaged the first cam 21 and then the first auxiliary cam 23 are raised to a level which corresponds to a drop stitch, so as to take up one or more yarns supplied at the feed being considered, and are then lowered, following the engagement of the heel 12a of the needles 12 with the second auxiliary cam 26, so as to not take up the yarn at the yarn fingers 80 that follow.
  • the needles 12 that correspond to the sub-needles 13 that have engaged the second cam 22 with their heel 16 form drop stitches.
  • This operating condition can be used in the formation of patterning with a plurality of colored yarns, since the needles 12 that correspond to the sub-needles 13 raised by the first cam 21 can take up a colored yarn, while the needles 12 that correspond to the sub-needles 13 that have engaged the second cam 22 can take up another colored yarn. In this manner it is possible to have loops of knitting of different colors on a same row of knitting and by passing through a single drop.
  • the first auxiliary cam 23 and the second auxiliary cam 26 are in the active position, while the lowering cam 27 is in the inactive position and is therefore not shown.
  • some sub-needles 13 engage the first cam 21 with their heel 16, while other sub-needles 13 engage the second cam 22 with their heel 16.
  • the needles 12 that correspond to the sub-needles 13 that have engaged the first cam 21 are raised to the drop-stitch position and can take up a yarn supplied at the feed being considered, subsequently lowering in order to avoid taking up the yarn supplied by the subsequent yarn fingers 80 at the same feed.
  • the needles 12 that correspond to the sub-needles 13 that have engaged the second cam 22 are raised and can take up the yarn at the yarn fingers 80, at which the needles 12 that correspond to the sub-needles 13 engaged with the first cam 21 were excluded from taking up the yarn. Since the lowering cam 27 is in the inactive position, only yarn takeup occurs, without forming loops; said loops will be formed only at subsequent feeds.
  • the machine according to the invention fully achieves the intended aim, since it allows to form patterning with a larger number of colored yarns knitted in separately from each other for each row or, for an equal number of knitted yarns, it achieves higher productivity than conventional types of machine for equal feeds.
  • the machine according to the invention if provided with four feeds, is in fact capable of forming patterning by separately knitting seven yarns of different colors in addition to the base yarn or, as an alternative, can form two rows per turn, separately knitting in four yarns.
  • the materials employed, as well as the dimensions, may be any according to requirements and to the state of the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Portable Outdoor Equipment (AREA)
EP99109275A 1998-06-03 1999-05-27 Métier à tricoter circulaire à grand adaptabilité pour bas et similaires avec multiples systèmes ou alimentations Pending EP0962569A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI981232 1998-06-03
IT98MI001232A ITMI981232A1 (it) 1998-06-03 1998-06-03 Macchina circolare per maglieria o calzetteria a piu' cadute o alimentazioni ad elevata versatilita' di impiego

Publications (2)

Publication Number Publication Date
EP0962569A2 true EP0962569A2 (fr) 1999-12-08
EP0962569A3 EP0962569A3 (fr) 2002-05-02

Family

ID=11380156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99109275A Pending EP0962569A3 (fr) 1998-06-03 1999-05-27 Métier à tricoter circulaire à grand adaptabilité pour bas et similaires avec multiples systèmes ou alimentations

Country Status (2)

Country Link
EP (1) EP0962569A3 (fr)
IT (1) ITMI981232A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105133169A (zh) * 2015-09-17 2015-12-09 福洹纺织实业江苏有限公司 针织大圆机的三角
IT201700044770A1 (it) * 2017-04-24 2018-10-24 Santoni & C Spa Macchina circolare per maglieria e metodo di movimentazione di aghi di una macchina circolare per maglieria

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2058861A (en) * 1979-09-19 1981-04-15 Irmac Spa Stocking of Patterned Knitting, Executed by Stitch Transfer (Open- work), with Coloured Design Effects
EP0426030A2 (fr) * 1989-11-03 1991-05-08 LONATI S.p.A. Procédé et dispositif pour la fabrication de dessins aux chaussettes aux métiers à tricoter circulaires à deux cylindres
GB2299347A (en) * 1995-03-28 1996-10-02 Monk Dubied Limited Cam system for a circular knitting machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2058861A (en) * 1979-09-19 1981-04-15 Irmac Spa Stocking of Patterned Knitting, Executed by Stitch Transfer (Open- work), with Coloured Design Effects
EP0426030A2 (fr) * 1989-11-03 1991-05-08 LONATI S.p.A. Procédé et dispositif pour la fabrication de dessins aux chaussettes aux métiers à tricoter circulaires à deux cylindres
GB2299347A (en) * 1995-03-28 1996-10-02 Monk Dubied Limited Cam system for a circular knitting machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105133169A (zh) * 2015-09-17 2015-12-09 福洹纺织实业江苏有限公司 针织大圆机的三角
IT201700044770A1 (it) * 2017-04-24 2018-10-24 Santoni & C Spa Macchina circolare per maglieria e metodo di movimentazione di aghi di una macchina circolare per maglieria
WO2018197971A1 (fr) * 2017-04-24 2018-11-01 Santoni S.P.A. Machine à tricoter circulaire et procédé de déplacement des aiguilles d'une machine à tricoter circulaire
KR20190138869A (ko) * 2017-04-24 2019-12-16 산토니 에쎄.뻬.아. 환편기 및 환편기의 바늘을 이동시키는 방법
US11214899B2 (en) 2017-04-24 2022-01-04 Santoni S.P.A. Circular knitting machine and a method for moving the needles of a circular knitting machine
TWI771392B (zh) * 2017-04-24 2022-07-21 義大利商聖東尼公司 圓編機及移動圓編機之織針的方法

Also Published As

Publication number Publication date
ITMI981232A1 (it) 1999-12-03
EP0962569A3 (fr) 2002-05-02

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