EP2088229B1 - Nähmaschine sowie Spuleinrichtung für eine derartige Nähmaschine - Google Patents

Nähmaschine sowie Spuleinrichtung für eine derartige Nähmaschine Download PDF

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Publication number
EP2088229B1
EP2088229B1 EP09000466A EP09000466A EP2088229B1 EP 2088229 B1 EP2088229 B1 EP 2088229B1 EP 09000466 A EP09000466 A EP 09000466A EP 09000466 A EP09000466 A EP 09000466A EP 2088229 B1 EP2088229 B1 EP 2088229B1
Authority
EP
European Patent Office
Prior art keywords
sewing machine
winding device
machine according
receptacle
engagement
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
EP09000466A
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German (de)
English (en)
French (fr)
Other versions
EP2088229A1 (de
Inventor
Gerd Langreck
Thomas Nöltge
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.)
Duerkopp Adler AG
Original Assignee
Duerkopp Adler AG
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Filing date
Publication date
Application filed by Duerkopp Adler AG filed Critical Duerkopp Adler AG
Publication of EP2088229A1 publication Critical patent/EP2088229A1/de
Application granted granted Critical
Publication of EP2088229B1 publication Critical patent/EP2088229B1/de
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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B47/00—Needle-thread tensioning devices; Applications of tensometers
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/28—Applications of bobbins for storing the lower thread
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B59/00—Applications of bobbin-winding or -changing devices; Indicating or control devices associated therewith
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/26—Bobbin holders or casings; Bobbin holder or case guards; Bobbin discharge devices

Definitions

  • the invention relates to a sewing machine according to the preamble of claim 1. Furthermore, the invention relates to a winding device for such a sewing machine.
  • a sewing machine with a winding device is known from the EP 1 873 293 A1 , A sewing machine of the type mentioned is also known by public prior use.
  • the winding device must remain at the conclusion of the winding process in a defined circumferential position about the winding axis, so that there is reproducible for a subsequent winding an initial position for holding the réellespulenden thread.
  • the braking of the known winding device for forcing a correspondingly defined circumferential position after completion of the winding process leads to a high load on the components of the winding device.
  • the component load of the winding device is reduced during braking to the conclusion of the winding process when the engagement of the Eingur stresses takes place via a damping element.
  • an increased braking distance is achieved when stopping the rotation of the winding device.
  • This braking distance leads to a significant reduction in the force load of the components involved in braking the winding device.
  • the service life of the winding device is significantly increased.
  • a resilient element according to claims 5 and 6 allows a particularly long life of the winding device.
  • a resilient element according to claim 7 can be made in particular of polyurethane.
  • a damping element according to claim 8 allows optimization of the material of the damping element with respect to its Dämpfungseigenschaf th.
  • a design of the winding device according to claim 9 leads to a captive damping element.
  • a winding device enables an automatic braking of the winding device at the conclusion of the winding process.
  • the wound coil itself triggers, as soon as it has reached a predetermined diameter, the deceleration of the winding device.
  • a sewing machine 1 has a housing 2 with an arm 3 and a stand 4.
  • a needle bar 5 is driven up and down with a sewing needle 6 via an arm shaft extending in the arm 3.
  • a sewing thread is fed via a thread guiding device 7 with a predetermined thread tension.
  • the sewing machine 1 has a winding device 8 for winding a yarn package from a yarn roll 9.
  • a concernedspulender thread 10 is thereby fed via a boom 11 and yarn guide components of the yarn guide device 7 of the winding device 8.
  • FIGS. 2 and 3 show a details of the winding device 8.
  • a friction wheel 12 of the winding device 8 is for driving the winding device 8 driven by the arm shaft of the sewing machine 1, as will be explained.
  • the friction wheel 12 is formed by an O-ring which is mounted on a spool 13.
  • the Spool wheel 13 is made of plastic, such as polyurethane, and is designed as an injection molded part.
  • An engaging body 14, at the free end of a hook 15 is formed in the in Fig. 2 shown instantaneous position of the winding device 8 is engaged in a receptacle 16 of the spool wheel 13, which thus represents a receiving body for the Einschreibharm 14.
  • the rotational movement of the spool gear 13 with the friction wheel 12 and thus a winding movement of the winding device 8 is stopped.
  • the engagement body 14 is elastically damped in the engagement position via a damping element 17 on the receiving body 13.
  • the damping element 17 is made of an elastomer and is engaged via a locking foot 18 in a complementary thereto detent receiving the Spulenrades 13 and thereby positively connected thereto.
  • the damping element 17 creates when braking the spool 13 via the engaged hook 15 a delay path, which is formed by a compression of the damping element 17 during braking of the spool wheel 13. This delay path leads to a reduction of the braking acceleration of the winding device 8 during braking and thus to a reduced force load when terminating the winding process.
  • the engagement body 14 is rigidly connected to a reversing body 19, which has a switching cam with a switching edge 20. Rigid with the Ein WegMI 14 and the Umstelloasa 19 is connected to a trigger lever 21 with a coil-driver surface 22 which rests during winding on a jacket wall of the wound bobbin.
  • the engagement body 14, the changeover body 19 and the release lever 21 are about a common Swivel axis 23 pivotally, which is parallel to a predetermined by a winder shaft 24 winding axis 25 of the winding device 8.
  • a free leg of a leaf spring 26 On an outer peripheral wall of the control cam 19 is a free leg of a leaf spring 26 at. An opposite end of the leaf spring 26 is fixed via a return spring 27 to a housing-fixed support body 28 of the winding device 8.
  • FIG. 4 and 5 illustrate the beginning of the winding process.
  • Fig. 4 shows the rotational position of the coil holder 29 with switched-off bobbin 8, ie before the beginning of the winding process.
  • the lovedspulende on the winder shaft 24 thread 10 is already cut to length with the tear-off 30 and clamped against the coil holder 29, so that the thread 10 is held at the beginning of winding.
  • Fig. 5 shows the beginning of the winding process, in which the coil holder 29 has performed about one-fifth of a full turn clockwise.
  • Fig. 6 shows details for driving the winding device 8.
  • the friction wheel 12 acts for this purpose with an end wall 32 of a toothed belt wheel 33 together, which is part of a belt drive of the sewing machine 1.
  • the toothed belt wheel 33 is rotatably connected to the arm shaft 34 of the sewing machine 1.
  • Fig. 7 to 12 show in a momentary position sequence the drive of the winding device 8 during the winding process.
  • Fig. 7 shows the switched-off winding device 8 before the start of the winding process, ie in the position which also in the Fig. 4 is shown.
  • the hook 15 of the Einsch stressess 14 lies over the damping element 17 in the receptacle 16 of the spool wheel 13 in the position Fig. 7 the winding device 8 can not be rotated about the winding axis 25, as this is prevented by the engaged hook 15.
  • the storage of the leaf spring 26 can be seen on a connected to the winder shaft 24 bearing body 35.
  • the bearing body 35 is in turn connected to the spool wheel 13. In the off position after the Fig.
  • Fig. 8 shows a switched-on position of the winding device 8.
  • the winding device 8 is switched by pivoting the release lever 21 about the pivot axis 23 such that the hook 15 of the Ein Wegworkss 14 from the receptacle 16 disengages, so that the spool 13 is released from the Einschreibève 14.
  • the leaf spring 26 by the switching cam of the Umstell stressess 19 in the Fig. 8 shifted to the top right, so that the leaf spring 26 via the bearing body 35, the spool 13 in the Fig. 8 displaced against the bias of the return spring 27 to the right until the friction wheel 12 comes to rest on the end wall 32 of the toothed belt wheel 33 until the winding device 8 can be driven for winding about the winding axis 25 via the arm shaft 34.
  • the thread 10 is wound in the coil housing 31.
  • the coil driver surface 22 of the release lever 21 is in contact with the outer jacket wall of the coil formed by the thread 10.
  • the release lever 21 is characterized by the growing coiled coil so in the sequence of Fig. 8 to 9 always pivoted clockwise about the pivot axis 23. At the same time pivoting due to the rigid connection and the reversing body 19 and the Eingur stresses 14, as in the Fig. 8 ff. represented.
  • Fig. 9 shows an instantaneous position at which the bobbin has practically reached its nominal strength.
  • the free end of the leaf spring 26 is applied to the switching cam of the Umstell stressess 19 practically on the switching edge 20.
  • Fig. 10 shows a further instantaneous position during the turn-off of the winding device 8.
  • the free end of the leaf spring 26 is displaced over the switching edge 20 of the reversing body 19 away.
  • the leaf spring 26 can thereby relax, so that the tensile force of the return spring 27 in relation to this opposing clamping force of the leaf spring 26 begins to get stronger.
  • the leaf spring 26 presses with its free end against the changeover body 19, so that the pivoting movement of the changeover body 19 and thus also the Eingur stresses 14 in the Fig. 7 to 12 continues in a clockwise direction.
  • Fig. 11 shows a momentary position of the winding device 8 just before the hook 15 engages in the receptacle 16 of the spool wheel 13.
  • the hook 15 is guided by a spiral guide wall 36 of the spool wheel 13. This ensures that the friction wheel 12 is still in frictional connection with the toothed belt wheel 33 until shortly before the end of the winding process.
  • Fig. 12 shows the end of the turn-off, so the position of the winding device 8, which, as regards their drive, the position after Fig. 7 equivalent.
  • the only difference is that in the current position after Fig. 12 on the winding device 8 a ready-wound coil in the coil housing 31 is present.
  • the damping element 17 leads at the transition between the instantaneous positions after Fig. 11 and 12 This leads to a corresponding braking distance, which provides the damping element 17, reduced braking acceleration of the spool wheel 13 and thus to a correspondingly reduced load on the components of the winding device.
  • Fig. 13 shows a further variant of a winding device 8.
  • Components that correspond to those described above with reference to the Fig. 1 to 12 have the same reference numbers and will not be discussed again in detail.
  • Fig. 14 shows in one too Fig. 7 a similar representation, an enlarged detail of the engaged in the receptacle 16 of the spool 13 hook 15 a variant of the Einsch stressess 14. Dashed lines is indicated in the Fig. 14 a limitation of a damping layer 38, which is applied to the spool wheel 13, that is on the receiving body, in the region of the receptacle 16. The damping layer 38 replaces the damping element 17.
  • a corresponding damping layer 39 may also be applied to the hook 15, as in FIG Fig. 14 also indicated by dashed lines.
  • the selection of the thicknesses of the damping layers 38 and 39 and the choice of material is dependent on the requirements that are placed on a reduction of the acceleration forces during braking of the spool wheel 13 of the winding device 8.
  • the damping element 17 or the damping layers 38, 39 may be made of an elastomer, an elastomeric foam or rubber.
  • the damping element 17 can also be designed as a resilient element, for example as a leaf spring. A plastic design of such a resilient element is possible.
  • the spool wheel 13 may be provided in total from a correspondingly damping or resilient material, so that the damping element is designed with the spool as a one-piece component. Such a one-piece design of the spool wheel 13, which also has the function of the damping element is in the Fig. 12 indicated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Vibration Dampers (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
EP09000466A 2008-02-07 2009-01-15 Nähmaschine sowie Spuleinrichtung für eine derartige Nähmaschine Active EP2088229B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008007998A DE102008007998A1 (de) 2008-02-07 2008-02-07 Nähmaschine sowie Spuleinrichtung für eine derartige Nähmaschine

Publications (2)

Publication Number Publication Date
EP2088229A1 EP2088229A1 (de) 2009-08-12
EP2088229B1 true EP2088229B1 (de) 2011-03-23

Family

ID=40735084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09000466A Active EP2088229B1 (de) 2008-02-07 2009-01-15 Nähmaschine sowie Spuleinrichtung für eine derartige Nähmaschine

Country Status (5)

Country Link
EP (1) EP2088229B1 (zh)
JP (1) JP5380094B2 (zh)
KR (1) KR101454036B1 (zh)
CN (1) CN101503847B (zh)
DE (2) DE102008007998A1 (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012105837A (ja) * 2010-11-18 2012-06-07 Juki Corp ミシンの糸巻き装置
DE102011085775A1 (de) * 2011-11-04 2013-05-08 Dürkopp Adler AG Verfahren zum automatischen Aufspulen einer Spule und einer Garnrolle sowie Spuleinrichtung zur Durchführung des Verfahrens
CN102747542A (zh) * 2012-06-20 2012-10-24 吴江市隆泰喷织厂 一种缝纫机稳定型紧线器
DE202012011059U1 (de) * 2012-11-19 2014-02-20 Dürkopp Adler AG Nähmaschine
CN103668810A (zh) * 2013-12-19 2014-03-26 吴江市菀坪宝得利缝制设备机械厂 一种缝纫机绕线装置
CN103981647B (zh) * 2014-04-18 2016-02-03 桐乡市中昊机械模具有限公司 缝纫机的自动绕线机
CN106436069B (zh) * 2016-07-21 2020-02-14 青县朱氏缝纫机件制造厂 全自动底线绕线机
JP6867139B2 (ja) * 2016-11-09 2021-04-28 Juki株式会社 ミシンの下糸巻き装置及びミシン
CN107190433A (zh) * 2017-07-05 2017-09-22 拓卡奔马机电科技有限公司 一种缝纫机的绕线机构

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH413567A (de) * 1964-05-08 1966-05-15 Gegauf Fritz Ag Kupplungseinrichtung, insbesondere für Nähmaschinen zum Entkuppeln des Nähmaschinenmechanismus vom Antriebsrad
US3333561A (en) * 1964-11-16 1967-08-01 Singer Co Bobbin winders for sewing machines
CH512621A (de) * 1970-02-06 1971-09-15 Gegauf Fritz Ag Auslösbare Spulvorrichtung für Nähmaschinen
DE7803296U1 (de) * 1978-02-04 1978-10-26 Kochs Adler Ag, 4800 Bielefeld Naehmaschinen-spulvorrichtung. 700905
JPS54124356U (zh) * 1978-02-20 1979-08-30
JPS5820230Y2 (ja) * 1979-09-08 1983-04-26 ブラザー工業株式会社 ミシンの糸巻装置
DE4014554C1 (en) * 1990-05-07 1991-08-29 Pfaff Ag G M Bobbin capsule for multi-needle sewing machine - has 1st spring to give looper thread tension and 2nd spring to receive slack thread part
JP2762688B2 (ja) * 1990-05-17 1998-06-04 ブラザー工業株式会社 ミシンの糸巻装置
JP2002355472A (ja) * 2001-05-31 2002-12-10 Juki Corp 下糸糸巻き装置および下糸糸巻き量制御装置
JP5036978B2 (ja) 2005-05-11 2012-09-26 Ｊｕｋｉ株式会社 ミシンの糸巻き装置
JP2007252414A (ja) * 2006-03-20 2007-10-04 Juki Corp ミシンの下糸巻き装置
US20080000406A1 (en) 2006-06-30 2008-01-03 Couto Paolo E R Sewing machine, bobbin and bobbin case therefor and use

Also Published As

Publication number Publication date
CN101503847A (zh) 2009-08-12
DE102008007998A1 (de) 2009-08-20
CN101503847B (zh) 2012-11-07
JP2009183706A (ja) 2009-08-20
KR20090086323A (ko) 2009-08-12
KR101454036B1 (ko) 2014-10-27
EP2088229A1 (de) 2009-08-12
DE502009000462D1 (de) 2011-05-05
JP5380094B2 (ja) 2014-01-08

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