EP1992726A1 - Machine à coudre - Google Patents

Machine à coudre Download PDF

Info

Publication number
EP1992726A1
EP1992726A1 EP08007802A EP08007802A EP1992726A1 EP 1992726 A1 EP1992726 A1 EP 1992726A1 EP 08007802 A EP08007802 A EP 08007802A EP 08007802 A EP08007802 A EP 08007802A EP 1992726 A1 EP1992726 A1 EP 1992726A1
Authority
EP
European Patent Office
Prior art keywords
counter
knife
blade
sewing machine
counter knife
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Withdrawn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
EP08007802A
Other languages
German (de)
English (en)
Inventor
Pavel Matejcek
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
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 Duerkopp Adler AG filed Critical Duerkopp Adler AG
Publication of EP1992726A1 publication Critical patent/EP1992726A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B37/00—Devices incorporated in sewing machines for slitting, grooving, or cutting
    • D05B37/04—Cutting devices
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B37/00—Devices incorporated in sewing machines for slitting, grooving, or cutting
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B65/00—Devices for severing the needle or lower thread

Definitions

  • the invention relates to a sewing machine with a knife according to the preamble of claim 1. Furthermore, the invention relates to a counter knife for such a sewing machine.
  • counter knives can be made so symmetrical that a counter knife can be equipped with a plurality of counter knife cutting edges which successively, each time a cutting edge is worn, by changing the orientation of Counter knife can be used.
  • the life and thus the cutting performance of the counter knife thus increases by a factor corresponding to the number of counter knife cutting edges provided. With a counter knife given quality thus increases its cutting performance accordingly.
  • the counter-blade can be made of less wear-resistant material.
  • the execution of the counter knife from für the counter knife receives the complete Integretusch the counter knife, which also has a life-increasing.
  • a counter knife according to claim 2 has a cutting power which is at least four times higher than that of known counter knife material.
  • Such a counter knife can be designed in particular as a rectangular blade plate.
  • a counter knife according to claim 3 may be designed as a square blade plate, wherein all eight edges of this blade plate can be used as cutting edges.
  • a counter knife holder according to claim 4 represents a structurally simple counter knife holder. A projection of the counter knife on the counter knife holder can be omitted.
  • a clamping body according to claim 5 leads to a secure mounting of the counter knife.
  • the clamping body may have recesses in order to keep free the sections involved counter knife surface sections.
  • the counter knife may be clamped so that it cuts at a free, unclamped end.
  • counter knife different thicknesses can be used, which can be used to shift the cutting position.
  • a Nähgutschneide counter knife can be varied in particular by the thickness of the counter knife, the distance of the cut in the fabric from a seam sewn parallel to the cut.
  • a sewing machine 1 has a base plate 2 with an upwardly extending therefrom stand 3 and an angled arm 4. The latter ends in a head 5.
  • the base plate 2, the stator 3, the arm 4 and the head 5 are of a housing 6 of the sewing machine 1 surrounded.
  • shaft is rotatably mounted. This drives in the head 5 via a crank mechanism in the head 5 axially slidably mounted needle bar 7 at.
  • the needle bar 7 has at its lower end a needle 8. The latter can be moved up and down by the crank mechanism on a vertical axis.
  • the needle 8 leads in an eye of a not shown coil supplied and also not shown needle thread.
  • the base plate 2 carries a support plate 9, can be placed on the fabric for sewing with the sewing machine 1.
  • the support plate 9 is in several parts. Part of the support plate 9 is a throat plate 10, with the Base plate 2 is screwed. The latter has a tap hole 11 for the passage of the needle 8. Furthermore, the throat plate 10 has a rectangular passage opening 12 through which an upper run of a lower feed wheel 13 passes.
  • the lower Stoffschieberrad 13 is in a known manner in drive connection with a arranged below the base plate 2 drive shaft. To feed the material, the lower Stoffschieberrad 13 cooperates with an upper Stoffschieberrad 14.
  • the throat plate 10 On the passage opening 12 horizontally opposite side of the needle hole 11, the throat plate 10 has a counter blade receptacle 15 for supporting a housing-fixed Nähgutschneid counter knife 16 of a Nähgutabschneiders 17.
  • the counter blade 16 is made of high-speed steel.
  • the counter-blade 15 is made of solid material without breakage, and therefore has no through-holes for the passage of fastening elements.
  • a clamping body 18 For holding the counter blade 16, this is clamped by a clamping body 18 against the needle plate 10 as a base body in the counter blade holder 15.
  • the clamping body 18 clamps the counter blade 16 in regions, so that a counter blade surface 19 of the counter blade 16 remains free on the side remote from the base body, ie the throat plate 10 side.
  • the clamping body 18 is pressed against the counter blade 16 by two horizontally adjacent screws 20.
  • the screws 20 pass through the needle plate 10 and are accessible via access holes 21 from the outside of the needle plate 10 ago.
  • the counter-blade surface 19 includes a counter-blade cutting edge 23 with an upper-side end face 22.
  • the edge angle is exactly 90 °.
  • the counter knife 16 is formed as a square blade plate. Altogether there are eight similar counter knife cutting edges 23 in the counter knife 16, as in the Fig. 9 indicated.
  • the counter-blade 16 can be supported in eight different orientations in the counter-blade holder 15, wherein in each of these eight orientations in each case a different one of the counter-blade cutting edges 23 is used.
  • a knife 24 of the Nähgutabschneiders 17 cooperates.
  • the knife 24 is moved up and down synchronously with the stitch formation via a screw jack.
  • When cutting a knife surface 25 cooperates with the counter blade surface 19.
  • the knife 24 is beveled towards the inlet side of the fabric, wherein the slope is complementary to an inclined portion 26 of the clamping body 18, which releases the counter blade surface 19.
  • the counter knife holder 15 can support counter knife 16 different plate thickness. Depending on the thickness of the counter blade 16, the cutting plane of the knife 24 can be readjusted. The larger the plate thickness of the counter blade 16, the further, for example, the cut formed by the Nähgutabschneider 17 in the fabric spaced from the sewing machine parallel stitched seam.
  • a displaceable plate member 27 of the support plate 9 is removed so that the screws 20 are accessible via the access holes 21.
  • the clamp body 18 loosely screwed and the counter-blade 16 can be removed from the counter-knife holder 15 and used in another orientation again in this.
  • the screws 20 are tightened again. Accordingly, a replacement of the counter blade 16 is moved against a new counter-blade of the same or different strength.
  • a gripper 28 which is rotatable about a vertical gripper axis.
  • a cup-shaped coil housing for receiving a Greiferfadenvorrates is stored.
  • the latter is between a basic position shown in the drawing and a thread detection position about a pivot axis parallel to the gripper axis (see 31 in the Fig. 3 ) pivotable.
  • the thread-pulling knife 30 has one in the view Fig. 3 reminiscent of a sickle basic shape, the free end extends in the basic position to the bobbin case of the gripper 28 around.
  • a knife surface 32 of the thread-pulling knife 30 cooperates for thread trimming with a counter-knife surface 33 of a thread-cutting counter knife 34 fixed to the housing.
  • the counter knife 34 has the shape of a rectangular plate, as in Fig. 10 shown.
  • a counter knife cutting edge 35 is formed between the counter knife surface 33 and an end face 36 of the counter knife 34.
  • the counter knife 34 has a total of four similar such counter knife cutting edges 35, as in the Fig. 10 indicated, depending on the orientation of the counter knife 34 in a counter knife holder 37 used comes.
  • the counter knife holder 37 has a curved base body 38 which clamps the counter knife 34 against a housing-fixed clamping body 39.
  • the position of the main body 38 relative to the frame or to the housing of the sewing machine 1 can be finely specified by means of adjusting screws 41.
  • the clamping body 39 is fixed by a screw 40 which can be screwed into a thread fixed to the housing.
  • the clamping with the housing-fixed body 38 and the clamping body 39 makes it possible to obtain a relative positioning of the blade surfaces 32, 33 to each other in the clamping of counter knives 34 of different thickness.
  • the screw 41 is released and the clamping body 38 is moved away from the base body 39, so that the counter blade 34 is released.
  • the counter knife 34 can then be removed and replaced in a new orientation or replaced with a new counter knife 34, so that a new counter knife cutting edge 35 can cooperate with the blade surface 32 of the thread trimmer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP08007802A 2007-05-15 2008-04-23 Machine à coudre Withdrawn EP1992726A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007022818A DE102007022818A1 (de) 2007-05-15 2007-05-15 Nähmaschine

Publications (1)

Publication Number Publication Date
EP1992726A1 true EP1992726A1 (fr) 2008-11-19

Family

ID=39713924

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08007802A Withdrawn EP1992726A1 (fr) 2007-05-15 2008-04-23 Machine à coudre

Country Status (5)

Country Link
EP (1) EP1992726A1 (fr)
JP (1) JP2008284357A (fr)
KR (1) KR20080101706A (fr)
CN (1) CN101307534A (fr)
DE (1) DE102007022818A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010119818A (ja) * 2008-11-20 2010-06-03 Yamato Sewing Mach Co Ltd ミシンの生地切断装置
CN102797121A (zh) * 2012-08-24 2012-11-28 新杰克缝纫机股份有限公司 双针缝纫机之剪线刀具
CN103510292A (zh) * 2012-06-28 2014-01-15 星锐缝纫机(嘉兴)有限公司 具有电磁自动裁切装置的缝纫机
CN105155144A (zh) * 2015-09-28 2015-12-16 南京际华三五0三服装有限公司 双止口切割器
EP3736369A1 (fr) 2019-05-08 2020-11-11 Dürkopp Adler AG Machine à coudre ainsi que module de contre-lame pour une machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI615522B (zh) * 2016-11-29 2018-02-21 縫紉機之閘刀式切斷裝置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3303034A1 (de) 1983-01-29 1984-08-02 Kochs Adler Ag, 4800 Bielefeld Fadenabschneidvorrichtung fuer eine naehmaschine
DE8630911U1 (de) 1986-11-18 1987-01-15 Dürkoppwerke GmbH, 4800 Bielefeld Fadenschneidvorrichtung an einer Doppelsteppstichnähmaschine mit einem in einer horizontalen Ebene umlaufenden Greifer
DE3621785A1 (de) * 1986-06-28 1988-01-14 Duerkoppwerke Naehmaschine mit einer naehgut-beschneidvorrichtung
WO1995019245A1 (fr) * 1994-01-13 1995-07-20 Ralph's Industrial Sewing Machine Company Bloc de coupe et support de lame de coupe fixe
EP0933461A2 (fr) 1998-02-02 1999-08-04 Johannes Sahl Appareil auxiliaire pour machines à coudre pour couper l'ouvrage
DE19835500C1 (de) * 1998-08-06 2000-03-16 Duerkopp Adler Ag Schneidvorrichtung zur Erzeugung einer Schlitzöffnung für ein Knopfloch
DE102004015813B3 (de) 2004-03-31 2005-05-19 Dürkopp Adler AG Augen-Knopfloch-Nähmaschine
AT414129B (de) 2002-06-07 2006-09-15 Sahl Johannes Nähmaschine zum verbinden zweier stofflagen durch eine flachnaht

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3303034A1 (de) 1983-01-29 1984-08-02 Kochs Adler Ag, 4800 Bielefeld Fadenabschneidvorrichtung fuer eine naehmaschine
DE3621785A1 (de) * 1986-06-28 1988-01-14 Duerkoppwerke Naehmaschine mit einer naehgut-beschneidvorrichtung
DE8630911U1 (de) 1986-11-18 1987-01-15 Dürkoppwerke GmbH, 4800 Bielefeld Fadenschneidvorrichtung an einer Doppelsteppstichnähmaschine mit einem in einer horizontalen Ebene umlaufenden Greifer
WO1995019245A1 (fr) * 1994-01-13 1995-07-20 Ralph's Industrial Sewing Machine Company Bloc de coupe et support de lame de coupe fixe
EP0933461A2 (fr) 1998-02-02 1999-08-04 Johannes Sahl Appareil auxiliaire pour machines à coudre pour couper l'ouvrage
DE19835500C1 (de) * 1998-08-06 2000-03-16 Duerkopp Adler Ag Schneidvorrichtung zur Erzeugung einer Schlitzöffnung für ein Knopfloch
AT414129B (de) 2002-06-07 2006-09-15 Sahl Johannes Nähmaschine zum verbinden zweier stofflagen durch eine flachnaht
DE102004015813B3 (de) 2004-03-31 2005-05-19 Dürkopp Adler AG Augen-Knopfloch-Nähmaschine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010119818A (ja) * 2008-11-20 2010-06-03 Yamato Sewing Mach Co Ltd ミシンの生地切断装置
CN103510292A (zh) * 2012-06-28 2014-01-15 星锐缝纫机(嘉兴)有限公司 具有电磁自动裁切装置的缝纫机
CN103510292B (zh) * 2012-06-28 2015-06-17 星锐缝纫机(嘉兴)有限公司 具有电磁自动裁切装置的缝纫机
CN102797121A (zh) * 2012-08-24 2012-11-28 新杰克缝纫机股份有限公司 双针缝纫机之剪线刀具
CN105155144A (zh) * 2015-09-28 2015-12-16 南京际华三五0三服装有限公司 双止口切割器
EP3736369A1 (fr) 2019-05-08 2020-11-11 Dürkopp Adler AG Machine à coudre ainsi que module de contre-lame pour une machine

Also Published As

Publication number Publication date
CN101307534A (zh) 2008-11-19
DE102007022818A1 (de) 2008-11-20
JP2008284357A (ja) 2008-11-27
KR20080101706A (ko) 2008-11-21

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