EP1739221A1 - Machine à coudre - Google Patents

Machine à coudre Download PDF

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Publication number
EP1739221A1
EP1739221A1 EP06010230A EP06010230A EP1739221A1 EP 1739221 A1 EP1739221 A1 EP 1739221A1 EP 06010230 A EP06010230 A EP 06010230A EP 06010230 A EP06010230 A EP 06010230A EP 1739221 A1 EP1739221 A1 EP 1739221A1
Authority
EP
European Patent Office
Prior art keywords
sewing machine
hold
machine according
sensor
position sensor
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.)
Granted
Application number
EP06010230A
Other languages
German (de)
English (en)
Other versions
EP1739221B1 (fr
Inventor
Christoph Heckner
Horst Seibert
Samuel Römich
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
Priority to SI200630047T priority Critical patent/SI1739221T1/sl
Publication of EP1739221A1 publication Critical patent/EP1739221A1/fr
Application granted granted Critical
Publication of EP1739221B1 publication Critical patent/EP1739221B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B19/00—Programme-controlled sewing machines
    • D05B19/02—Sewing machines having electronic memory or microprocessor control unit
    • D05B19/12—Sewing machines having electronic memory or microprocessor control unit characterised by control of operation of machine
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means
    • D05B27/02—Work-feeding means with feed dogs having horizontal and vertical movements
    • D05B27/04—Work-feeding means with feed dogs having horizontal and vertical movements arranged above the workpieces

Definitions

  • the invention relates to a sewing machine according to the preamble of claim 1.
  • Such a sewing machine is eg from the DE 30 43 141 A1 known. As soon as the thickness of the fabric to be sewn with such a sewing machine changes, the sewing machine must be reset manually or the programming of the sewing machine must be adjusted. This is time consuming.
  • the essential parameter which is important in connection with the thickness of the sewing material, is the strength of the material compressed during the sewing process.
  • This compressed material thickness is measured by detecting the position of the hold-down foot in a hold-down position by means of a position sensor position representing this hold-down foot position by means of a position sensor.
  • a presser foot can be used to hold the fabric down in the area of a stitch pattern point or a fabric foot also holding down the fabric during a transport process in a hold-down position.
  • the thus automatically detected compressed material thickness in the area of the stitch image point can via the control device be converted into predetermined control values depending on this compressed material thickness.
  • the sewing machine therefore adapts automatically to the respective compressed material thickness.
  • control values predetermined control values, a safe mass transport can be achieved while minimizing the pressure that the hold-down feet, ie the presser foot and / or the transport foot, exert on the fabric.
  • a position sensor according to claim 2 outputs a distance value which can be easily measured. Alternatively, it is possible to determine the position of a certain component of the movable linkage in space, without using a relative distance measurement for this purpose.
  • a position sensor according to claim 5 can be elegantly integrated into the linkage.
  • the arrangement of such a position sensor takes into account that in the known sewing machines, the pressure exerted by the thrust component on the housing component depends on the height of the hold-down foot in the hold-down position, ie the compressed material thickness.
  • An optical sensor according to claim 6 can be designed either as a distance sensor or as the absolute position of a component in the space-determining sensor, for example as a light barrier or light curtain.
  • the sewing speed of the sewing machine can be adapted to the compressed fabric thickness.
  • the sewing speed can therefore be kept relatively close to the maximum sewing speed possible at a certain fabric thickness, which shortens the overall sewing time.
  • a control device allows an optimization of the thread tension to the respective material thickness. This ensures a clean stitch formation even with high material thicknesses.
  • a control device ensures safe transport while minimizing the transport stroke. In particular, this can always be guaranteed a minimum required fan height. This saves time during operation of the sewing machine, z. As when venting and venting a lifting cylinder used in this context, and allows easy positioning of the material.
  • a control device ensures optimum adaptation of the stitch length to the fabric thickness.
  • FIGS. 1 to 3 show apart from the control components a realistic reproduction of a partially disassembled sewing machine 1.
  • FIGS. 4 and 5 show the sewing machine 1 in a schematic representation to illustrate the coupling of mechanical components of a total designated 2 upper transport device. From the basic structure, the sewing machine 1 is known, so that only the components essential to the invention will be explained in detail below.
  • the sewing machine 1 has a C-shaped housing 3. It has a base plate 4 and an upper arm 5. To complete the C-shape, a stand 6 connects the base plate 4 to the arm 5. In the latter, an arm shaft 7 (see Fig. 4) is mounted, which is of a not shown Motor is driven. From the rotation of the arm shaft 7 are derived by mechanical coupling the up and down movement of a needle bar 8 with a sewing needle 9 and the movement of the upper transport device 2. For driving the upper transport device 2, the kinematic structure is clearly shown in FIGS. 4 and 5, the arm shaft 7 is rotatably connected to an eccentric 10. At the latter, a pull rod 11 is hinged, which in turn is pivotally connected to a rocker 12.
  • the latter vibrates about a vibration fixed to the housing 13 about a swing axis parallel to the arm shaft 7.
  • a further pull rod 14 At its end remote from the eccentric pull rod 11 end of the rocker 12 is pivotally connected to a further pull rod 14.
  • the latter carries a permanent magnet 15, which generates a magnetic field with approximately perpendicular to the base plate 4 extending field lines.
  • FIG. 4 shows the top transport device 2 in a hold-down position for a thick material 16 to be sewn, which is referred to below as the first hold-down position.
  • a Hall sensor 17 is directly adjacent to the permanent magnet 15. This sensor is mounted on a boom 18 fixed to the housing. Via a signal line 19, the Hall sensor 17 is connected to a central control device 20 in connection.
  • the magnet pull rod 14 is hinged at its end remote from the rocker 12 at an upper corner in Fig. 4 at a triangular lever 21.
  • Fig. 4 lower left corner of the triangular lever 21 is hinged to a presser foot 22.
  • the presser foot 22 is used for holding down fabric in the area of a stitch image point.
  • a compression spring 24 is supported, the bias of which is adjustable by means of a spring-pressure screw 25.
  • the spring pressure adjusting screw 25 is motorized driven. This drive is connected via a signal line 26 to the control device 20 in connection. With the spring pressure set screw 25 as a motor-driven actuator, the fan height is adjusted.
  • the right in Fig. 4 lower corner joint of the triangular lever 21 is articulated via a coupling rod 27 at a transport foot 28 for fabric to be sewn.
  • the upper transport device 2 constitutes a movable linkage for the driven displacement of the presser foot 22 and the transport foot 28.
  • the presser foot 22 and the transport foot 28 contribute to the upper transport by releasing them alternately from the holddown position to a raised position for release of the fabric.
  • the position of the presser foot 22 and the transport foot 28 in the raised position is set in the sewing machine 1 via a motor-driven adjusting wheel 29.
  • the control wheel 29 is connected via a signal line 30 to the control device 20 in connection.
  • the thread tension of a first sewing thread is set in the sewing machine 1 by a motor-driven actuator 31.
  • the latter is connected via a signal line 32 to the controller 20 in connection.
  • the thread tension for a second sewing thread is set at the sewing machine 1 by a motor-driven actuator 33.
  • the latter is connected via a signal line 34 to the control device 20 in connection.
  • a stitch length can be set in the sewing machine 1 via a motor-driven actuator designed as a stitch length adjusting wheel 35.
  • the latter is connected via a signal line 36 to the controller 20 in connection.
  • the control device 20 is connected via a signal line 37 with a motor controller 38 in connection, which in turn is in a manner not shown with the drive motor for the arm shaft 7 in signal communication.
  • the presser foot 22 and the transport foot 28 are alternately displaced by the upper transport device 2 between the hold-down position and the raised position.
  • the position of the presser foot 22 and the transport foot 28 depends on the thickness to which the fabric can be compressed.
  • the first holddown position of Figures 1, 2 and 4 shows a relatively thick, e.g. two-ply fabric 16, which can hardly be compressed.
  • a second hold down position shown in Figs. 3 and 5 shows a relatively thin, e.g. single-layer fabric 39, which also can hardly be compressed.
  • a relatively thick fabric in the hold-down position can be compressed to a comparatively low thickness in the stitch image area.
  • the drawbar 14 is a movable portion of the upper transport device 2, the distance to the boom 18 in the displacement of the presser foot 22 and the transport foot 28 between the raised position and the holddown is constantly changing. If a relatively thick material is still present in the compressed state, for example in the first hold-down position, the permanent magnet 15 is directly adjacent to the Hall sensor 17. The Hall sensor 17 therefore gives a signal corresponding to this strong approximation of the permanent magnet 15 via the signal line 19 to the control device 20.
  • the permanent magnet 15 is further spaced from the Hall sensor 17, resulting in a sensor signal which corresponds to this lower compressed material thickness.
  • the stitch length is increased at larger compressed fabric thickness by specifying a corresponding value to the stitch length adjustment wheel.
  • the fan height can be adjusted to the detected material thickness.
  • the fan height of the presser foot 22 and the transport foot 28 can be selected so that the fabric can just be conveniently inserted or removed. It is therefore possible to select the minimum required fan height. This saves time when venting and bleeding a lifting cylinder as part of the top transport 2. Furthermore, an easy positioning of the substance is possible.
  • the distance between the Hall sensor 17 and the permanent magnet 15 as a result of the change in distance between the boom 18 and the tie rod 14 changes cyclically during operation of the upper transport device 2.
  • the distance between the Hall sensor 17 and the permanent magnet 15 reaches an extremum.
  • This extremum can be determined by the control device 20 by means of a corresponding time-resolved detection of the output value of the Hall sensor 17 become.
  • the extremum is uniquely assigned to the position of the presser foot 22 or of the transport foot 28 in the hold-down position. It represents a measure of the thickness of the substance 16 or 39 compressed by the presser foot 22 or the transport foot 28.
  • the position sensor which is formed in the embodiment of FIGS. 1 to 5 by the Hall sensor 17 with the permanent magnet 15, may also be embodied by other sensor types.
  • the position sensor may for example be designed as a capacitive proximity sensor, wherein the boom 18 and the tie rod 14 are parts of a capacitor whose capacitance is measured.
  • the position sensor may also be formed as a piezo element which is disposed between a component in thrust connection with the presser foot 22, e.g. the compression spring 24, and a housing-fixed component of the sewing machine 1, e.g. the housing cover 23, is arranged.
  • the piezoelectric element measures the pressure which the compression spring 24 exerts on the presser foot 22 or the transport foot 28 in the hold-down position. This pressure depends on how strong the presser foot 22 or the transport foot 28 are raised in the hold-down position by a correspondingly strong, underlying fabric.
  • the position sensor can also be used as an optical sensor, e.g. as a light curtain, be formed.
  • the adjustment of the manipulated values to the fabric thickness measured by the Hall sensor 17 can take place, in particular, without any delay, at the compressed fabric thicknesses which continuously change during the sewing process.
  • this may be, for example, a pneumatic drive, a hydraulic drive or a stepping motor drive.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Sewing Machines And Sewing (AREA)
  • Inorganic Insulating Materials (AREA)
  • Massaging Devices (AREA)
EP06010230A 2005-06-28 2006-05-18 Machine à coudre Not-in-force EP1739221B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200630047T SI1739221T1 (sl) 2005-06-28 2006-05-18 Ĺ ivalni stroj

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005029955A DE102005029955A1 (de) 2005-06-28 2005-06-28 Nähmaschine

Publications (2)

Publication Number Publication Date
EP1739221A1 true EP1739221A1 (fr) 2007-01-03
EP1739221B1 EP1739221B1 (fr) 2008-04-16

Family

ID=37114450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06010230A Not-in-force EP1739221B1 (fr) 2005-06-28 2006-05-18 Machine à coudre

Country Status (7)

Country Link
EP (1) EP1739221B1 (fr)
JP (1) JP2007007391A (fr)
KR (1) KR20070000990A (fr)
CN (1) CN1891887A (fr)
AT (1) ATE392502T1 (fr)
DE (2) DE102005029955A1 (fr)
SI (1) SI1739221T1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1777331A1 (fr) * 2005-10-18 2007-04-25 Dürkopp Adler Aktiengesellschaft Machine à coudre
CN109208187A (zh) * 2018-10-19 2019-01-15 百福工业缝纫机（张家港）有限公司 新型自动送料缝纫机
CN112320681A (zh) * 2020-11-18 2021-02-05 中国人民解放军32181部队 导弹空壳运输架

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102121176B (zh) * 2006-08-28 2012-10-03 兄弟工业株式会社 缝纫机
DE202007011553U1 (de) * 2007-08-17 2008-12-24 Dürkopp Adler AG Transporteur zum Transport von Nähgut während des Betriebs einer Nähmaschine
JP2009089833A (ja) * 2007-10-05 2009-04-30 Juki Corp ミシンの布送り装置
DE102008053750A1 (de) * 2008-10-29 2010-05-06 Dürkopp Adler AG Nähmaschine
CN102587049B (zh) * 2011-01-14 2015-09-02 上海日野工业缝纫机有限公司 能感受缝料厚度的自动紧线机构
JP2012176182A (ja) * 2011-02-28 2012-09-13 Brother Ind Ltd ミシン
DE102012207257B4 (de) * 2012-05-02 2014-01-16 Minerva Boskovice A.S. Nähmaschine
JP2014064859A (ja) * 2012-09-27 2014-04-17 Brother Ind Ltd ミシン
JP2016064096A (ja) * 2014-09-26 2016-04-28 ブラザー工業株式会社 ミシンとミシンの制御方法
CN104532487B (zh) * 2014-10-20 2017-01-25 上海鲍麦克斯电子科技有限公司 工业缝纫机压料驱动控制结构
CN104652045A (zh) * 2015-02-09 2015-05-27 浙江乐江机械有限公司 一种缝纫机
DE102015207998B3 (de) * 2015-04-30 2016-08-04 Dürkopp Adler AG Stichlängen-Stellvorrichtung für eine Nähmaschine sowie Nähmaschine mit einer derartigen Stichlängen-Stellvorrichtung
CN105862265B (zh) * 2016-05-27 2019-07-23 浙江众邦机电科技有限公司 一种缝纫机布料厚度检测装置
CN105970509B (zh) * 2016-06-14 2019-02-12 浙江众邦机电科技有限公司 一种缝纫机布料厚度感应检测装置
JP2019162284A (ja) * 2018-03-20 2019-09-26 ブラザー工業株式会社 ミシン
CN108442044B (zh) * 2018-04-25 2024-03-01 标准缝纫机菀坪机械有限公司 一种缝纫机缝料过坎自动感应装置和应用其的缝纫机
CN110761006B (zh) * 2018-07-26 2021-12-14 杰克缝纫机股份有限公司 一种缝纫机过梗减速装置及控制方法
CN109322068B (zh) * 2018-11-27 2021-04-27 杰克缝纫机股份有限公司 一种缝纫机压脚机构及缝纫机
CN109706649B (zh) * 2019-03-13 2022-01-18 杰克缝纫机股份有限公司 缝纫机控制方法及缝纫机控制系统
CN109989186B (zh) * 2019-04-23 2021-06-22 杰克缝纫机股份有限公司 复合调节方法
CN111118762A (zh) * 2020-02-24 2020-05-08 浙江众邦机电科技有限公司 一种缝纫机及其薄厚料检测装置
JP7540179B2 (ja) * 2020-03-30 2024-08-27 ブラザー工業株式会社 縫製装置
CN115247320B (zh) * 2021-04-28 2023-06-20 杰克科技股份有限公司 调节机构及缝纫机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4214543A (en) * 1979-07-05 1980-07-29 The Singer Company Electronically controlled top feed arrangement for a sewing machine
US4296703A (en) * 1979-10-03 1981-10-27 Thompson Elmer R Sewing machine conversion apparatus
DE3043141A1 (de) * 1980-11-15 1982-07-29 Dürkoppwerke GmbH, 4800 Bielefeld Obertransportvorrichtung
DE3333571A1 (de) * 1982-09-16 1984-03-22 Yamato Mishin Seizo K.K., Osaka Automatische einstellvorrichtung fuer den oberen transporteur einer steppmaschine
WO1989001068A1 (fr) * 1987-07-27 1989-02-09 Pfaff Industriemaschinen Gmbh Mecanisme de transport superieur sur des machines a coudre
DE4131058A1 (de) * 1991-02-14 1992-08-20 Mitsubishi Electric Corp Aufwaertsvorschubvorrichtung zur verwendung in einer naehmaschine
DE4211846A1 (de) * 1991-04-12 1992-10-15 Brother Ind Ltd Vorschubvorrichtung einer naehmaschine fuer ein oberes naehgut

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3528295A1 (de) * 1985-08-07 1987-02-19 Pfaff Ind Masch Naehmaschine mit einer abtastvorrichtung
DE8807493U1 (de) * 1988-06-09 1988-07-21 Dürkoppwerke GmbH, 4800 Bielefeld Nähmaschine mit einer druckmittelbetätigbaren Vorrichtung zum Erzeugen einer veränderbaren, auf einen Stoffdrücker einwirkenden Andrückkraft
SE509654C2 (sv) * 1995-03-17 1999-02-22 Viking Sewing Machines Ab Anordning i en symaskin
US5551361A (en) * 1995-04-17 1996-09-03 North Carolina State University Sewing machine having presser bar system for maintaining constant contact force between presser foot and fabric
DE19728817C1 (de) * 1997-07-05 1998-06-04 Duerkopp Adler Ag Betätigungseinrichtung für den Stoffdrücker einer Nähmaschine
DE10323158B3 (de) * 2003-05-22 2004-07-08 Dürkopp Adler AG Nähmaschine mit einem Sensor zur Erfassung der Nähgut-Dicke

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4214543A (en) * 1979-07-05 1980-07-29 The Singer Company Electronically controlled top feed arrangement for a sewing machine
US4296703A (en) * 1979-10-03 1981-10-27 Thompson Elmer R Sewing machine conversion apparatus
DE3043141A1 (de) * 1980-11-15 1982-07-29 Dürkoppwerke GmbH, 4800 Bielefeld Obertransportvorrichtung
DE3333571A1 (de) * 1982-09-16 1984-03-22 Yamato Mishin Seizo K.K., Osaka Automatische einstellvorrichtung fuer den oberen transporteur einer steppmaschine
WO1989001068A1 (fr) * 1987-07-27 1989-02-09 Pfaff Industriemaschinen Gmbh Mecanisme de transport superieur sur des machines a coudre
DE4131058A1 (de) * 1991-02-14 1992-08-20 Mitsubishi Electric Corp Aufwaertsvorschubvorrichtung zur verwendung in einer naehmaschine
DE4211846A1 (de) * 1991-04-12 1992-10-15 Brother Ind Ltd Vorschubvorrichtung einer naehmaschine fuer ein oberes naehgut

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1777331A1 (fr) * 2005-10-18 2007-04-25 Dürkopp Adler Aktiengesellschaft Machine à coudre
CN109208187A (zh) * 2018-10-19 2019-01-15 百福工业缝纫机（张家港）有限公司 新型自动送料缝纫机
CN112320681A (zh) * 2020-11-18 2021-02-05 中国人民解放军32181部队 导弹空壳运输架
CN112320681B (zh) * 2020-11-18 2022-08-05 中国人民解放军32181部队 导弹空壳运输架

Also Published As

Publication number Publication date
EP1739221B1 (fr) 2008-04-16
SI1739221T1 (sl) 2008-10-31
DE502006000634D1 (de) 2008-05-29
JP2007007391A (ja) 2007-01-18
KR20070000990A (ko) 2007-01-03
CN1891887A (zh) 2007-01-10
DE102005029955A1 (de) 2007-01-04
ATE392502T1 (de) 2008-05-15

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