US20230056303A1 - Process to close an end of a tubular manufactured article directly on hosiery and knitwear circular machines and respective circular machine - Google Patents

Process to close an end of a tubular manufactured article directly on hosiery and knitwear circular machines and respective circular machine Download PDF

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Publication number
US20230056303A1
US20230056303A1 US17/785,724 US202017785724A US2023056303A1 US 20230056303 A1 US20230056303 A1 US 20230056303A1 US 202017785724 A US202017785724 A US 202017785724A US 2023056303 A1 US2023056303 A1 US 2023056303A1
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US
United States
Prior art keywords
needles
cylinder
stitches
manufactured article
needle
Prior art date
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Pending
Application number
US17/785,724
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English (en)
Inventor
Renato MICHELI
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Sgm Automazioni Srl
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Sgm Automazioni Srl
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Publication date
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Assigned to SGM AUTOMAZIONI S.R.L. reassignment SGM AUTOMAZIONI S.R.L. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MICHELI, Renato
Publication of US20230056303A1 publication Critical patent/US20230056303A1/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/10—Patterned fabrics or articles
    • D04B1/102—Patterned fabrics or articles with stitch pattern
    • D04B1/108—Gussets, e.g. pouches or heel or toe portions
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/22—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration
    • D04B1/24—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration wearing apparel
    • D04B1/26—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration wearing apparel stockings
    • 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
    • D04B15/02—Loop-transfer points
    • 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
    • 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
    • D04B15/48—Thread-feeding devices
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/40—Circular knitting machines with independently-movable needles with provision for transfer of knitted goods from one machine to another
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/03—Shape features
    • D10B2403/033—Three dimensional fabric, e.g. forming or comprising cavities in or protrusions from the basic planar configuration, or deviations from the cylindrical shape as generally imposed by the fabric forming process
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2501/00—Wearing apparel
    • D10B2501/02—Underwear

Definitions

  • the tubular manufactured article comprises a plurality of stitches of at least one yarn fed to needles which are carried by at least one lower rotating cylinder and are susceptible to vertical movement, and the process provides that the stitch present on at least one half of adjacent cylinder needles is collected, then these stitches are positioned on another half of the cylinder needles, together with the stitches originally present on a second half of the cylinder needles, and a yarn is fed to the needles of the half of the cylinder needles, which carry the pairs of stitches, the yarn having to be processed so as to join the stitches together and thereby close the end of the tubular manufactured article.
  • the lettering “half of the cylinder needles” refers to a plurality of needles adjacent to each other, equal to half of the total number of the cylinder needles.
  • some needles of the second half of the needles intercept the yarn in a raised position and are interspersed with other needles of the second half of the needles which intercept the yarn in a non-raised position, preferably in a restrained position, while during the second semi-rotation the needles that previously intercepted the yarn in the raised position now intercept the yarn in a non-raised position, preferably in a restrained position, and conversely the needles that previously intercepted the yarn in the non-raised position, preferably in the restrained position, now intercept the yarn in the raised position.
  • the invention also relates to an improved circular machine.
  • the machine head and the yarn feeding stations are movable between:
  • the head is combined with the machine so that it can be overturned by an angle sufficient to clear the space above the cylinder; preferably this angle is at least 45°, preferably about 90° with respect to the horizontal direction, or the head is rotated sideways by an angle of at least 45°, preferably about 90°.
  • the positioning device comprises a plurality of transferring members whose number is equal to the number of needles of the machine, one half of which is carried by a fixed portion of a supporting element and the other half by a movable portion of the supporting element, wherein the movable portion is combined with the fixed portion so as to be able to rotate by 180° from an initial position, in which it is coplanar to the fixed portion, to a tilted position, in which it is located near or in contact with the fixed portion.
  • the stitches can be moved from all the cylinder needles to the transferring members of the fixed and movable portions, the movable portion can be rotated, the respective stitches can be moved, if necessary, to the transferring members of the fixed portion so that two stitches are located on the transferring members of the fixed portion, if necessary the movable portion can be returned to its initial position and finally the pairs of stitches can be moved from the transferring members of the fixed portion to a corresponding half of the cylinder needles.
  • the movements of the stitches from the needles to the transferring members, from the transferring members of the movable portion to those of the fixed portion and from the transferring members to half of the needles are known per se and may comprise pusher elements combined with the positioning device and/or the machine cylinder, to be alternately used in case the stitches have to be moved upwards or downwards.
  • the positioning device further comprises a turner for turning the tubular manufactured article inside out, directly above the machine cylinder, after the stitches have been collected from at least half of the cylinder needles and before these stitches are coupled to a stitch of the other half of the needles.
  • a turner for turning the tubular manufactured article inside out, directly above the machine cylinder, after the stitches have been collected from at least half of the cylinder needles and before these stitches are coupled to a stitch of the other half of the needles.
  • the inner surface of the tubular manufactured article is on the outside, so that the portion of free yarn, which is formed at the end of the joining of its end, remains inside the tubular manufactured article once the latter has been turned again inside out to be used.
  • the invention relates to a positioning device for circular machines according to claim 16 .
  • a positioning device comprises a transferring apparatus operating at the cylinder of a circular knitwear or hosiery machine, for allowing a respective stitch to be collected from at least one first half of the cylinder needles and the stitches collected from at least the first half of the cylinder needles to be positioned on the needles of the other half of the cylinder, together with the stitches previously arranged on this second half of the cylinder needles.
  • the device is structured to allow a pair of stitches of a tubular manufactured article to be positioned on a half of the cylinder needles of a machine, initially in opposite positions with respect to a diameter of the cylinder, with the tubular manufactured article turned inside out, then to return the tubular manufactured article into the lower cylinder in order to, then, join the two edges of an end thereof directly on the machine itself.
  • the transferring apparatus has at least one movable portion and one fixed portion, if any, which have each a plurality of transferring members adapted to collect stitches from a respective half of the cylinder needles, and are combined with each other so that the movable portion is susceptible to 180° rotations in opposite directions, with respect to the fixed portion.
  • FIG. 1 shows a front view of a circular hosiery or knitwear machine provided with a positioning device according to the present invention, in a normal condition of use, at the end of the production of a tubular manufactured article;
  • FIG. 2 shows the machine of FIG. 1 in a second condition of use
  • FIG. 3 shows the machine of FIG. 2 with the positioning device in a working position
  • FIGS. 4 , 5 and 6 show an enlarged view of the machine portion in the frame of FIG. 3 , with the positioning device in three different steps of collecting the stitches of an end of the tubular manufactured article and turning the manufactured article itself inside out;
  • FIGS. 7 , 8 and 9 show three subsequent steps needed to couple together the previously collected stitches
  • FIGS. 10 and 11 show the steps required to transfer pairs of stitches to a half of the cylinder needles
  • FIG. 12 shows a view of the machine, similar to that in FIG. 1 , but with the last stitches of the tubular manufactured article arranged on a half of the cylinder needles;
  • FIG. 13 shows a schematic view of the cylinder completed with needles
  • FIG. 14 shows part of the machine needles during a working step for closing the end of the manufactured article
  • This circular machine 1 comprises a base 2 , a head 3 , at least one main or lower cylinder 4 combined with the base and susceptible of at least partial rotations, defined as travels, in which a plurality of vertically arranged needles 5 are slidably mounted side by side to form a circle, the latter comprising a first semicircle SC 1 and a second semicircle SC 2 both having the same number of needles, as shown in FIG. 13 .
  • the machine may also comprise an upper cylinder—not shown—combined with the head and mounted above the cylinder 4 and aligned therewith, so that the needles 5 may slide into either of these cylinders in order to make plain or purl stitches. Each cylinder can be selectively operated to rotate with continuous or reciprocating motion, depending on the production steps.
  • One or more feeding stations 6 are combined with the head, for feeding the needles with at least one yarn 7 to be processed, for the production of a tubular manufactured article 8 that consists of a sequence of stitches of at least said yarn, which form a plurality of consecutive courses.
  • the term “course” refers to stitches made in one travel, i.e. one full or partial turn of the cylinder.
  • the needles may comprise a portion referred to as a hook 5 ′ to catch and restrain the yarn to be processed, and a latch 5 ′′ to close the hook during stitch formation.
  • Each needle can be selectively brought to:
  • the transferring apparatus is designed to collect respective stitches of the last course 8 ′ from all the cylinder needles, then couple two by two said stitches and finally position each pair of stitches on the needles belonging to the first or second semicircle.
  • the tubular manufactured article Before the steps of coupling the opposite stitches together and arranging the pairs of stitches on part of the cylinder needles, the tubular manufactured article may be turned inside out and then, after the aforesaid steps, it may be arranged again in the cylinder but remaining inside out.
  • Half of the stitches of the last course are collected by means of the transferring members of the movable portion and the other half are collected, if necessary, by means of the transferring members of the fixed portion.
  • the stitches are coupled together by overturning the movable portion onto the fixed portion and pushing or pulling the stitches present on the movable portion so that they pass onto the fixed portion.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Knitting Machines (AREA)
US17/785,724 2019-12-16 2020-12-14 Process to close an end of a tubular manufactured article directly on hosiery and knitwear circular machines and respective circular machine Pending US20230056303A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT102019000024108A IT201900024108A1 (it) 2019-12-16 2019-12-16 Procedimento per chiudere un’estremità di un manufatto tubolare direttamente su macchine circolari per calzetteria e maglieria e relativa macchina circolare
IT102019000024108 2019-12-16
PCT/IB2020/061885 WO2021124067A1 (en) 2019-12-16 2020-12-14 Process to close an end of a tubular manufactured article directly on hosiery and knitwear circular machines and respective circular machine

Publications (1)

Publication Number Publication Date
US20230056303A1 true US20230056303A1 (en) 2023-02-23

Family

ID=70155069

Family Applications (1)

Application Number Title Priority Date Filing Date
US17/785,724 Pending US20230056303A1 (en) 2019-12-16 2020-12-14 Process to close an end of a tubular manufactured article directly on hosiery and knitwear circular machines and respective circular machine

Country Status (7)

Country Link
US (1) US20230056303A1 (ko)
EP (1) EP4077784A1 (ko)
KR (1) KR20220111697A (ko)
CN (1) CN114846184A (ko)
IT (1) IT201900024108A1 (ko)
MX (1) MX2022007252A (ko)
WO (1) WO2021124067A1 (ko)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202200002327A1 (it) * 2022-02-09 2023-08-09 Sgm Automazioni S R L Macchina circolare per calzetteria e maglieria perfezionata e procedimento per chiudere un’estremità di un manufatto tubolare direttamente su una macchina circolare
IT202200002342A1 (it) 2022-02-09 2023-08-09 Sgm Automazioni S R L Procedimento per chiudere un’estremità di un manufatto tubolare direttamente su una macchina circolare per maglieria e calzetteria
KR102528427B1 (ko) * 2022-11-25 2023-05-03 박정환 발가락 양말의 봉조시스템 및 이를 통해 편직된 발가락 양말

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603116A (en) * 1970-05-11 1971-09-07 Lamberto Benvenuti And Enrico Seamless stocking and method of knitting pockets therein
US5924310A (en) * 1995-11-28 1999-07-20 Golden Lady S.P.A. Device for closing one end of a tubular knitted article on the same circular machine that produced it
US6044668A (en) * 1996-04-29 2000-04-04 Golden Lady S.P.A. Method and mechanism for closing the toe at the start of the process of making a stocking or sock, in a circular knitting machine
US6389849B1 (en) * 1998-07-07 2002-05-21 Metalworking And Finance Group International S.A. Method and device for closing the toe of a tubular article on a knitting machine
US20030089136A1 (en) * 2001-11-09 2003-05-15 Justin Lynch Sock
US20060144095A1 (en) * 2002-10-21 2006-07-06 Alberto Frullini Method and apparatus for joining the edges of a tubular knitted article
WO2007110894A2 (en) * 2006-03-28 2007-10-04 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
US20100319410A1 (en) * 2009-06-19 2010-12-23 Massimo Bianchi Device for closing the toe at the end of tubular hosiery articles
WO2017067801A1 (en) * 2015-10-21 2017-04-27 Staubli Italia S.P.A. Device and method for picking up tubular knitted articles from circular knitting machines

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5813192B1 (ja) * 2014-08-29 2015-11-17 永田精機株式会社 丸編機の編地移し方法及び装置
EP3290555A1 (de) * 2016-09-02 2018-03-07 Ulrich Hofmann Nadel zur maschenbildung an einer strick- oder kettenwirkmaschine, strick- oder kettenwirkmaschine mit mehreren solcher nadeln und verfahren zur herstellung einer solchen nadel

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603116A (en) * 1970-05-11 1971-09-07 Lamberto Benvenuti And Enrico Seamless stocking and method of knitting pockets therein
US5924310A (en) * 1995-11-28 1999-07-20 Golden Lady S.P.A. Device for closing one end of a tubular knitted article on the same circular machine that produced it
US6044668A (en) * 1996-04-29 2000-04-04 Golden Lady S.P.A. Method and mechanism for closing the toe at the start of the process of making a stocking or sock, in a circular knitting machine
US6389849B1 (en) * 1998-07-07 2002-05-21 Metalworking And Finance Group International S.A. Method and device for closing the toe of a tubular article on a knitting machine
US20030089136A1 (en) * 2001-11-09 2003-05-15 Justin Lynch Sock
US20060144095A1 (en) * 2002-10-21 2006-07-06 Alberto Frullini Method and apparatus for joining the edges of a tubular knitted article
WO2007110894A2 (en) * 2006-03-28 2007-10-04 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
US20100319410A1 (en) * 2009-06-19 2010-12-23 Massimo Bianchi Device for closing the toe at the end of tubular hosiery articles
WO2017067801A1 (en) * 2015-10-21 2017-04-27 Staubli Italia S.P.A. Device and method for picking up tubular knitted articles from circular knitting machines

Also Published As

Publication number Publication date
KR20220111697A (ko) 2022-08-09
CN114846184A (zh) 2022-08-02
WO2021124067A1 (en) 2021-06-24
MX2022007252A (es) 2022-09-23
IT201900024108A1 (it) 2021-06-16
EP4077784A1 (en) 2022-10-26

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