EP3199680A1 - Dispositif de récupération de fil pour appareils de textile - Google Patents

Dispositif de récupération de fil pour appareils de textile Download PDF

Info

Publication number: EP3199680A1
Authority: EP; European Patent Office
Prior art keywords: yarn; spool; recovery device; face; arms
Prior art date: 2016-01-26
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.): Granted

Application number

EP17152836.7A

Other languages

German (de)

English (en)

Other versions

EP3199680B1 (fr

Inventor

Pietro Zenoni

Giovanni Pedrini

Rosario Castelli

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.)

LGL Electronics SpA

Original Assignee

LGL Electronics 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.)

2016-01-26

Filing date

2017-01-24

Publication date

2017-08-02

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=55919825&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3199680(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

2017-01-24 Application filed by LGL Electronics SpA filed Critical LGL Electronics SpA

2017-08-02 Publication of EP3199680A1 publication Critical patent/EP3199680A1/fr

2020-01-15 Application granted granted Critical

2020-01-15 Publication of EP3199680B1 publication Critical patent/EP3199680B1/fr

Status Active legal-status Critical Current

2037-01-24 Anticipated expiration legal-status Critical

Links

238000011084 recovery Methods 0.000 title claims abstract description 25
239000004753 textile Substances 0.000 title description 5
238000004804 winding Methods 0.000 claims abstract description 5
229920002994 synthetic fiber Polymers 0.000 claims description 2
229920000049 Carbon (fiber) Polymers 0.000 description 2
239000004677 Nylon Substances 0.000 description 2
239000004917 carbon fiber Substances 0.000 description 2
230000000670 limiting effect Effects 0.000 description 2
238000000034 method Methods 0.000 description 2
229920001778 nylon Polymers 0.000 description 2
239000012815 thermoplastic material Substances 0.000 description 2
238000011144 upstream manufacturing Methods 0.000 description 2
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
229910052782 aluminium Inorganic materials 0.000 description 1
230000001419 dependent effect Effects 0.000 description 1
238000009940 knitting Methods 0.000 description 1
238000012986 modification Methods 0.000 description 1
230000004048 modification Effects 0.000 description 1
230000036632 reaction speed Effects 0.000 description 1
238000009941 weaving Methods 0.000 description 1

Images

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
- D04B15/48—Thread-feeding devices
- 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
- D04B15/482—Thread-feeding devices comprising a rotatable or stationary intermediate storage drum from which the thread is axially and intermittently pulled off; Devices which can be switched between positive feed and intermittent feed
- 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
- D04B15/482—Thread-feeding devices comprising a rotatable or stationary intermediate storage drum from which the thread is axially and intermittently pulled off; Devices which can be switched between positive feed and intermittent feed
- D04B15/484—Yarn braking means acting on the drum
- 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

Definitions

the present invention relates to a yarn recovery device for textile apparatuses.
Yarn recovery devices which are adapted to be positioned upstream of a generic textile machine in order to recover part of the yarn that was previously dispensed to the machine and then return it at a later time.
EP1741817B1 in the name of this same Applicant discloses a recovery device provided with a motorized rotary reel capable of winding thereon the yarn to be recovered.
the reel has a continuous cylindrical outer surface.
the yarn passes through a channel that extends obliquely from the outer surface of the reel to a front surface thereof.
the aim of the present invention is to provide a yarn recovery device that, although based on a principle of operation that is mechanically similar to that of the rotary reel device mentioned above, has a structure that can increase the operating reaction speed thereof.
a yarn recovery device 10 is adapted to be arranged along a yarn feeding line for the purpose of recovering part of the yarn that was previously dispensed to a generic textile machine downstream, e.g., a knitting machine, or a frame, and then return it at a later time.
the yarn recovery device 10 can be arranged between a yarn feeder (e.g., a storage yarn feeder or a rotary reel yarn feeder) and the textile machine, or also upstream of the yarn feeder.
the yarn recovery device 10 comprises a motor 12 accommodated in a support 14 and is provided with a driving shaft 16 ( Figure 2 ).
a spool 18 is keyed on the driving shaft 16 and can be actuated in order to recover part of the yarn that was previously dispensed to the machine downstream, by winding it thereon.
the spool 18 is delimited axially between a front end face 18a and a rear end face 18b which faces the motor 12.
the support 14 carries integrally a first yarn guiding bush 20 and a second yarn guiding bush 22 which define a straight path that passes obliquely through the spool 18 with respect to the axis A thereof, and the spool 18 is provided with a plurality of radial recesses 24 that open on the front end face 18a and are adapted to be passed through by the yarn inserted through the first yarn guiding bush 20 and the second yarn guiding bush 22.
the first yarn guiding bush 20 and the second yarn guiding bush 22 are arranged so that the path defined by them lies on a plane containing the axis A of the spool 18.
the first yarn guiding bush 20 and the second yarn guiding bush 22 are interconnected by a bridge 25.
a spool 18 is used which is known per se, since it is used in positive yarn feeders such as that disclosed in EP 2218670 in the name of this same Applicant.
the spool 18 comprises a frame molded from synthetic material, preferably a thermoplastic material like nylon with the addition of carbon fibers.
the frame has a hub 28 and a plurality of spokes 30 that are angularly equally spaced apart and extend radially outward from the hub 28.
the spokes 30 have an aerodynamic profile in the direction of rotation.
Respective arms 32 protrude from the outer ends of the spokes 30 and are substantially parallel to the axis of the hub 28.
the arms 32 also advantageously have aerodynamic profile in the direction of rotation.
the spokes 30 have a biconvex cross-sectional profile, while the arms 32 have a cross-sectional profile that is convex on the outer face of the arm and is slightly concave on the inner face.
Each one of the radial recesses 24 that can be passed through by the yarn is therefore defined between two adjacent spoke-arm pairs.
a protrusion 34 is defined in the connection region between the spoke 30 and the respective arm 32.
the protrusion 34 extends obliquely outward with respect to the axis of the spool 18 in the opposite direction to the arms 32.
the free ends of the arms 32 are connected to a stiffening ring 36 which delimits the frame 26 on the side of the rear end face 18b.
the stiffening ring 36 is also made of thermoplastic material like nylon with the addition of carbon fibers.
the spool 18 is keyed to the driving shaft 16 with the interposition of a co-molded bushing insert 44 inserted in the hub 28.
the bushing insert 44 is preferably made of aluminum, and makes it possible to clamp the spool 18 on the shaft 16 with force without the spool being deformed.
the recovery device 10 When not in use, the recovery device 10 is in the active configuration shown in Figures 1 and 2 , with the yarn F being able without interference to travel a straight path that passes through the first yarn guiding bush 20, one of the radial recesses 24 defined between two adjacent spoke-arm pairs, and the second yarn guiding bush 22.
the spool 18 is made to rotate in one direction, as illustrated in Figure 3 .
the spool 18 is made to rotate in the opposite direction until it returns to the inactive position shown in Figures 1 and 2 .
the spool 18 according to the invention has a high structural rigidity, a low inertia, and a low aerodynamic resistance by virtue of the aerodynamic profile of the spokes 30 and of the arms 32. Such fact, as the skilled person will easily grasp, favors the speed of reaction of the yarn recovery device to operating commands.
the purpose of the protrusions 34 is to prevent the yarn loops wound on the spool 18 from falling during the step of recovering or returning the yarn.
the spool described above which is known per se from yarn feeder devices is particularly advantageous.
a specially-designed spool could also be provided, as long as it has at least one radial recess that opens on the front end face, which cooperates with the two fixed bushes in the manner described above in order to allow the winding of the yarn.

Landscapes

Engineering & Computer Science (AREA)
Textile Engineering (AREA)
Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
Spinning Or Twisting Of Yarns (AREA)

EP17152836.7A 2016-01-26 2017-01-24 Dispositif de récupération de fil pour appareils de textile Active EP3199680B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
ITUB2016A000067A ITUB20160067A1 (it)	2016-01-26	2016-01-26	Dispositivo di recupero di filato per apparati tessili.

Publications (2)

Publication Number	Publication Date
EP3199680A1 true EP3199680A1 (fr)	2017-08-02
EP3199680B1 EP3199680B1 (fr)	2020-01-15

Family

ID=55919825

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP17152836.7A Active EP3199680B1 (fr)	2016-01-26	2017-01-24	Dispositif de récupération de fil pour appareils de textile

Country Status (3)

Country	Link
EP (1)	EP3199680B1 (fr)
CN (1)	CN106995973B (fr)
IT (1)	ITUB20160067A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN111893632B (zh) *	2020-08-06	2021-08-31	温州市花为媒花边织带有限公司	一种纺织机械导纱器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2158107A (en) *	1984-05-02	1985-11-06	Gustav Memminger	Yarn feeding apparatus for yarn-processing textile machines such as circular knitting machines
EP1741817B1 (fr)	2005-07-07	2009-01-07	L.G.L. Electronics S.p.A.	Dispositif de retrait de fil pour machines textiles
EP2218670A1 (fr)	2009-02-16	2010-08-18	L.G.L. Electronics S.p.A.	Fournisseur de fil avec un tambour léger d'enroulement de fil
EP2642004A1 (fr) *	2012-03-22	2013-09-25	L.G.L. Electronics S.p.A.	Procédé de récupération/alimentation en fils pour machines textiles et appareil permettant de mettre en ouvre ce procédé

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN1003084B (zh) *	1985-04-23	1989-01-18	古斯塔夫·梅明格	针织圆机用的喂纱装置
DE19811240C2 (de)	1998-03-14	2000-05-31	Memminger Iro Gmbh	Fadenliefergerät mit verbessertem Fadenlauf
ITTO20120805A1 (it) *	2012-09-17	2014-03-18	Lgl Electronics Spa	Alimentatore di filato a tamburo rotante per lavorazioni tessili con selezione del filato.

2016
- 2016-01-26 IT ITUB2016A000067A patent/ITUB20160067A1/it unknown
2017
- 2017-01-24 EP EP17152836.7A patent/EP3199680B1/fr active Active
- 2017-01-25 CN CN201710055809.8A patent/CN106995973B/zh active Active

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2158107A (en) *	1984-05-02	1985-11-06	Gustav Memminger	Yarn feeding apparatus for yarn-processing textile machines such as circular knitting machines
EP1741817B1 (fr)	2005-07-07	2009-01-07	L.G.L. Electronics S.p.A.	Dispositif de retrait de fil pour machines textiles
EP2218670A1 (fr)	2009-02-16	2010-08-18	L.G.L. Electronics S.p.A.	Fournisseur de fil avec un tambour léger d'enroulement de fil
EP2642004A1 (fr) *	2012-03-22	2013-09-25	L.G.L. Electronics S.p.A.	Procédé de récupération/alimentation en fils pour machines textiles et appareil permettant de mettre en ouvre ce procédé

Also Published As

Publication number	Publication date
EP3199680B1 (fr)	2020-01-15
CN106995973A (zh)	2017-08-01
ITUB20160067A1 (it)	2017-07-26
CN106995973B (zh)	2021-03-16

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