EP2138620A1 - Machine à coudre et procédé de fonctionnement d'une telle machine à coudre - Google Patents

Machine à coudre et procédé de fonctionnement d'une telle machine à coudre Download PDF

Info

Publication number: EP2138620A1
Authority: EP; European Patent Office
Prior art keywords: fabric; sewing machine; pressure; pressing rod; servomotor
Prior art date: 2008-06-28
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

EP09007123A

Other languages

German (de)

English (en)

Other versions

EP2138620B1 (fr

Inventor

Markus Richter

Artur Hinkelmann

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.)

2008-06-28

Filing date

2009-05-28

Publication date

2009-12-30

2009-05-28 Application filed by Duerkopp Adler AG filed Critical Duerkopp Adler AG

2009-12-30 Publication of EP2138620A1 publication Critical patent/EP2138620A1/fr

2012-05-16 Application granted granted Critical

2012-05-16 Publication of EP2138620B1 publication Critical patent/EP2138620B1/fr

Status Active legal-status Critical Current

2029-05-28 Anticipated expiration legal-status Critical

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Classifications

- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/24—Feed-dog lifting and lowering devices
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/10—Electrical or electromagnetic drives
- D05B69/12—Electrical or electromagnetic drives using rotary electric motors

Definitions

the invention relates to a sewing machine according to the preamble of claim 1.
pressurization for the at least one fabric presser bar via a servomotor, in particular via a stepper motor, and a transmission lever represent a surprisingly simple design variant for flexible pressure generation on the at least one fabric presser bar.
the pressure generation on the at least one fabric presser rod is carried out according to the invention independently of the drive of the sticherzeugungsmittel. This provides new degrees of freedom in the operation of the at least one fabric presser bar during sewing operation.
a compressed air motor can basically be used as a servomotor.
the servomotor can be designed as a stepper motor.
Such a stepper motor is a cost effective variant of Servomotor according to the invention.
a standard stepper motor can be used.
the adaptation of the required torque for generating pressure on the at least one Stoffd Wegerstange to the output torque of the motor can be done by means of a corresponding deflection of the transmission lever.
the adaptation of the required torque can also be done by a corresponding control of the stepper motor.
the control of the stepper motor can be done programmatically.
a driver according to claim 2 in addition to a defined via the servo motor pressure generation on the at least one fabric presser rod also for the possibility of a defined lifting of the at least one fabric presser bar.
This can for example be used to adapt to different Nähgutdicken or for ventilating the at least one Stoffd Wegerstange.
at least two fabric presser rods interact with corresponding drivers, an alternating operation of the two fabric presser rods is possible.
Two fabric presser rods according to claim 3 lead to the possibility of sewing over a controlled slip difference set an arcuate seam course. An alternating operation between the two pressure-emitting devices of the two fabric presser rods is also possible.
both pressure-generating devices according to claim 4 are designed according to the invention with a servomotor and a transmission lever, this leads to a further extension of the degrees of freedom in the operation of the sewing machine.
Both transmission levers can with entrainment interact so that both pressure-emitting devices can also be raised.
An arrangement according to claim 5 allows an adjacent arrangement of the two fabric presser rods, so that they can interact with the fabric without major design effort at adjacent locations.
a revolving fabric conveyor belt according to claim 6 allows a Nähgutvorschub and / or a controlled introduction of sewing material fullness.
a central control device allows synchronization of the Stoffd Wegerstangenbet Oberist with the Sticherzeugung.
a flexible and programmable sequence of movement of the fabric presser bars is possible.
the control of the at least one pressure-generating device can be carried out depending on programmed or during the sewing operation measured parameters.
a position sensor according to claim 8 allows the measurement of a currently processed with the sewing machine Nähgutdicke. This measured value can then be used to control the sewing machine, in particular for controlling the servomotors.
a multi-unit transmission mechanism according to claim 9 allows torque adjustment over a wide range.
Another object of the invention is to provide operating methods that are possible with the aid of the inventive sewing machine.
the pressure exerted on the cloth over the fabric presser bar varies during the stitch. Pressure is applied to the fabric only if this is absolutely necessary for the stitch formation. This reduces the material load and leads to the possibility of an accelerated sewing process. In addition, rotation of the fabric during sewing can be facilitated, resulting in improved fabric handling.
a yarn tension specification according to claim 11 leads to a particularly economical sewing operation. It is also possible to set the pressure that the at least one fabric pressing rod exerts on the fabric, depending on a predetermined or measured default value.
a multi-length-dependent stroke specification according to claim 13 takes into account a material crimp when sewing.
the method of claim 15 allows z. B. the specification of a curved seam course.
a sewing machine 1 has an upper arm 2 with a machine head 3, a vertical stand not shown in the drawing and a lower housing, which is commonly referred to as a base plate 4.
the Base 4 has an upwardly projecting column 5, which is why the sewing machine 1 is also referred to as a column sewing machine.
the sewing machine 1 can be used as a sleeve sewing machine.
a not shown arm shaft for up and down drive a needle bar, not shown, with needle bar axis 6 is rotatably mounted.
the drive of the arm shaft via a mounted in the arm 2 drive motor and a belt drive, both of which are not shown in the drawing.
the needle bar carries at its lower end a needle.
a gripper is rotatably mounted in the column 5. Sewing parts to be sewn are guided over a stitch hole plate forming the upper side of the column 5, through which the needle passes into the area of the gripper.
the needle on the one hand and the gripper on the other hand constitute stich generating means of the sewing machine 1.
a main sewing direction 7 (cf. Fig. 3 ) of the sewing machine 1 serve a lower feed dog assembly 8 and an upper feed slide assembly 9. Also, a feed of the workpieces in a direction opposite to the main sewing direction 7, so in particular a reverse sewing, is possible.
the lower feed dog assembly 8 has two adjacent lower conveyor belts 10, 11, which are designed as polyurethane-coated timing belt.
the toothed belts can also be made of an elastomer.
the conveyor belts 10, 11 are so driven by mounted in the column 5 toothed disks 12 by a common drive 12a, that they move relative to the needle plate in the sewing direction 7 at the same speed.
This drive 12a of the two lower conveyor belts 10, 11 is for example in the Fig. 1 shown.
the drive 12a is a servomotor.
an upper conveyor belt 13, 13a cooperates in each case.
the lower conveyor belt 10 associated upper conveyor belt 13 is made wider than the lower conveyor belt 11 associated upper conveyor belt 13 a.
the upper conveyor belts 13, 13a are each designed as a closed endless conveyor belt and also as a polyurethane-coated toothed belt or elastomeric timing belt.
the upper conveyor belt 13 is deflected via a mounted on a presser foot 14 guide roller.
the presser foot 14 is a pressure-emitting device of the sewing machine 1, which cooperates via the upper conveyor belt 13 with the workpieces to be sewn, ie with the material to be sewn.
the upper conveyor belt 13 is driven via a toothed disc 16. This is driven by a belt drive servomotor 17, which is designed as a stepper motor.
the presser foot 14 is mounted on a first, head-side presser bar 18. This is axially guided in a Stoffstangenbuchse 19, the Machine head 3 is fixed. The presser foot 14 is fixed to the end of the first fabric presser rod 18 at the fabric side. At the opposite, machine-head-side end, the first fabric pressing rod 18 cooperates with a first pressure-generating device 20.
This has a stepping motor designed as a servomotor 21 and as a transmission mechanism, a transmission lever 22 (see. Fig. 2 and 6 ), which is non-rotatably connected to a motor shaft 23 of the servomotor 21. Radially spaced from the motor shaft 23, the transmission lever 22 is in thrust communication with the machine head end of the first fabric presser bar 18.
the servomotors 21 may be, in particular, standard stepper motors.
the transmission lever 22 is a multi-part.
a first transmission member 24 is rotatably connected to the motor shaft 23.
the end of the radially extending transmission member 24 is articulated via a connecting joint 25 to a further transmission member 26 of the transmission lever 22.
the further transmission member 26 is pivotable about a fixedly connected to the machine head 3 pivot joint 27.
the connection joint 25 opposite end of the transmission member 26 is connected to a driving pin 28, which in turn is set at the machine head end of the first fabric presser rod 18.
the driving pin 28 ensures that the first presser rod 18 is connected to the pressure-generating device 20 not only in push but also in train connection.
a further, presser foot 29 on the side of the stand acts on the associated upper conveyor belt 13a to feed intermediate sewing material in the sewing direction 7.
Different transport speeds of the conveyor belts 13, 13a can by use be achieved by individual toothed pulleys at the location of the toothed disc 16 with different diameters, in which case each of the upper conveyor belts 13, 13 a is associated with one of these individual toothed pulleys.
the further presser foot 29 represents the end of the sewing material another, arm-side presser rod 30 is a machine-side end of the further fabric presser rod 30 is connected to another pressure-generating device 31 in push and pull connection.
Dashed lines indicated symmetry plane 32 corresponds to the structure of the further pressure-generating device 31 mirror-symmetrically substantially the structure of the first pressure-generating device 20, so that only those details are explained below, in which this structure deviates from the mirror symmetry.
the transmission member 26 of the other pressure generating means 31 is compared with the transmission member 26 of the first pressure generating device 20 with respect to the motor shaft 23 axially offset towards the interior of the machine head 3, so that the two transmission members 26 of the pressure generating means 20, 31 do not interfere with each other ,
the transfer members 26 provide translation of the torque generated by the transfer members 24 to the cloth presser bars 18, 30.
the second fabric pressing rod 30 is guided in a cloth bushing 19 in its axial movement.
the two fabric presser rods 18, 30 and thus also their two machine-head-side ends are arranged directly adjacent to each other.
the control device 33 is also in signal connection with the servomotor 12a.
the controller 33 is connected to a in the Fig. 3 schematically indicated position sensor 34 for evaluating a current position of the arm shaft in signal connection.
the control device 33 is in the servomotors 21 of the pressure-generating devices 20, 31 respectively integrated position sensors for evaluating a current position of the motor shafts 33 in signal communication.
the two pressure-generating devices 20, 31 can be controlled independently of one another by the control device 33.
a lifting movement of the driving pins 28 due to the actuation of the pressure-generating devices 20, 31 is guided via a fixed to the machine head 3 slot plate 35.
the pressure-generating devices 20, 31 on the fabric presser bars 18, 30 exercise, ie at a given torque of the servomotors 21st , an associated rotational position of the motor shafts 23, which can be detected by the integrated position sensors of the servomotors 21.
This thickness measurement can be used by the control device 33, for example, to specify a stitch length or a feed transport speed or a thread tension.
the pressure exerted by the pressure-generating devices 20, 31 and thus the fabric presser bars 18, 30 on the sewing material can, controlled by the control device 33, during the execution of a stitch according to a pressure default curve, the servomotors 21 via the transmission lever 22 on the fabric presser bars 18, 30 exert to be varied.
the foot pressure on the two fabric presser rods 18, 30 can be variably specified during a stitch. Since the servomotors 21 operate independently of the arm shaft drive, this pressure default curve can be processed synchronized to the generation of jams, but this is not mandatory. For example, at every other stitch, a pressure according to another pressure default curve or, as far as the stroke of the fabric presser bars 18, 30 is included, be exercised according to a different pressure and motion profile.
a yarn tension of a sewing thread of the sewing machine 1 may be controlled by the controller 33, depending on the pressure exerted by the pressure generating means 20, 31. Also a pressure specification depending on a default value, in particular of the Armwellenburniere, depending on the stitch length or individually during different stitch segments is possible.
the pressure-generating means 20, 31 can also be a stroke of the fabric presser bars 18, 30 during sewing and in particular during a stitch, individually according to a stroke-default curve, the servo motors 21 convey the fabric presser rods 18, 30 via the transmission lever 22, can be varied.
This hub can, for. Example, to specify a via the conveyor belts 10, 11 and 13 to be created substance fullness in particular dependent on a default value can be set variably.
the thread tension can be specified. It is also possible to set the stroke dependent on the arm shaft speed.
the servomotors 21 can also exert a pulling action on the fabric pressing rods 18, 30 via the driving pins 28, a ventilation of the two presser feet 14, 29 is also possible.
the control device 33 can process previously programmed processes with pressure and stroke default curves.
control device 33 By means of a corresponding specification by the control device 33, a rapid adjustment of the lifting height which the fabric presser rods 18, 30 carry out during the sewing operation is possible.

Landscapes

Engineering & Computer Science (AREA)
Textile Engineering (AREA)
Sewing Machines And Sewing (AREA)
Physics & Mathematics (AREA)
Electromagnetism (AREA)
Mechanical Engineering (AREA)

EP20090007123 2008-06-28 2009-05-28 Machine à coudre et procédé de fonctionnement d'une telle machine à coudre Active EP2138620B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE102008030797A DE102008030797A1 (de)	2008-06-28	2008-06-28	Nähmaschine sowie Verfahren zum Betrieb einer derartigen Nähmaschine

Publications (2)

Publication Number	Publication Date
EP2138620A1 true EP2138620A1 (fr)	2009-12-30
EP2138620B1 EP2138620B1 (fr)	2012-05-16

Family

ID=41105232

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP20090007123 Active EP2138620B1 (fr)	2008-06-28	2009-05-28	Machine à coudre et procédé de fonctionnement d'une telle machine à coudre

Country Status (5)

Country	Link
EP (1)	EP2138620B1 (fr)
JP (1)	JP5286172B2 (fr)
KR (1)	KR101532097B1 (fr)
CN (1)	CN101613912B (fr)
DE (1)	DE102008030797A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN105316876A (zh) *	2014-09-02	2016-02-10	保定泽泰服装机械制造有限公司	一种缝纫机的同步带送布机构
US20240175186A1 (en) *	2022-11-29	2024-05-30	Juki Corporation	Sewing machine
EP4379112A1 (fr) *	2022-11-29	2024-06-05	JUKI Corporation	Machine à coudre

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN102953244B (zh) *	2012-11-06	2015-06-17	贺欣机械厂股份有限公司	缝纫设备车缝及送料马达同步运转控制方法及装置
CN103668798A (zh) *	2013-12-19	2014-03-26	吴江市菀坪宝得利缝制设备机械厂	一种缝纫机上下送料机构
DE102014213457A1 (de)	2014-07-10	2016-01-14	Dürkopp Adler AG	Verfahren zum Abarbeiten eines Nähprogramms zum Vernähen von Nähgut sowie die Nähmaschine hierfür
CN105063899B (zh) *	2015-08-04	2018-01-30	江苏天淼软件开发有限公司	一种编织物自动缝合机上的卷布装置
CN107488942B (zh) *	2016-06-10	2022-01-07	Juki株式会社	扁平缝缝纫机
CN105887348B (zh) *	2016-06-23	2018-07-31	钟治超	一种缝纫机送料机构
DE102016011557A1 (de) *	2016-09-26	2018-03-29	Pfaff Industriesysteme Und Maschinen Gmbh	Nähmaschine mit einer Pullereinrichtung
CN107099941B (zh) *	2017-05-25	2020-04-17	杰克缝纫机股份有限公司	一种缝纫机
CN107099940B (zh) *	2017-05-25	2020-03-06	杰克缝纫机股份有限公司	一种缝纫机
CN111379083A (zh) *	2018-12-30	2020-07-07	浙江中捷缝纫科技有限公司	抬压脚装置、缝纫机以及抬压脚装置的控制方法

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DE102004019001A1 (de) *	2003-04-21	2004-12-16	Juki Corp., Tokio/Tokyo	Differentialvorschub-Nähmaschine
EP1897984A2 (fr)	2006-09-08	2008-03-12	Dürkopp Adler Aktiengesellschaft	Machine à coudre
EP1897985A2 (fr)	2006-09-08	2008-03-12	Dürkopp Adler Aktiengesellschaft	Machine à coudre destinée à coudre deux pièces avec incorporation de l'embus
EP2000571A2 (fr) *	2007-06-08	2008-12-10	Dürkopp Adler Aktiengesellschaft	Machine à coudre et méthode pour la faire fonctionner

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JPH05192464A (ja) *	1992-01-20	1993-08-03	Tokai Ind Sewing Mach Co Ltd	ミシンの布押え駆動装置
JP2001198373A (ja) *	2000-01-20	2001-07-24	Hirose Mfg Co Ltd	ミシンの送り装置
DE10216810A1 (de) *	2002-04-16	2003-11-06	Duerkopp Adler Ag	Knopfloch-Nähmaschine
DE10233017B4 (de) *	2002-07-20	2004-09-30	Dürkopp Adler AG	Augen-Knopfloch-Nähmaschine
JP3903011B2 (ja) *	2003-01-23	2007-04-11	株式会社廣瀬製作所	先引きローラ
JP2005192620A (ja) *	2003-12-26	2005-07-21	Juki Corp	ミシンの布送り機構
DE102005049771A1 (de) *	2005-10-18	2007-04-19	Dürkopp Adler AG	Nähmaschine
JP2009089833A (ja) *	2007-10-05	2009-04-30	Juki Corp	ミシンの布送り装置

2008
- 2008-06-28 DE DE102008030797A patent/DE102008030797A1/de not_active Withdrawn
2009
- 2009-05-28 EP EP20090007123 patent/EP2138620B1/fr active Active
- 2009-06-24 KR KR1020090056429A patent/KR101532097B1/ko active Active
- 2009-06-24 JP JP2009149852A patent/JP5286172B2/ja active Active
- 2009-06-26 CN CN200910149196XA patent/CN101613912B/zh active Active

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE8213129U1 (de) *	1982-05-06	1984-08-16	Kochs Adler Ag, 4800 Bielefeld	Naehmaschine mit einer vorschubeinrichtung fuer das zu naehende werkstueck
DE102004019001A1 (de) *	2003-04-21	2004-12-16	Juki Corp., Tokio/Tokyo	Differentialvorschub-Nähmaschine
EP1897984A2 (fr)	2006-09-08	2008-03-12	Dürkopp Adler Aktiengesellschaft	Machine à coudre
EP1897985A2 (fr)	2006-09-08	2008-03-12	Dürkopp Adler Aktiengesellschaft	Machine à coudre destinée à coudre deux pièces avec incorporation de l'embus
EP2000571A2 (fr) *	2007-06-08	2008-12-10	Dürkopp Adler Aktiengesellschaft	Machine à coudre et méthode pour la faire fonctionner

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN105316876A (zh) *	2014-09-02	2016-02-10	保定泽泰服装机械制造有限公司	一种缝纫机的同步带送布机构
US20240175186A1 (en) *	2022-11-29	2024-05-30	Juki Corporation	Sewing machine
EP4379112A1 (fr) *	2022-11-29	2024-06-05	JUKI Corporation	Machine à coudre
US12351962B2 (en) *	2022-11-29	2025-07-08	Juki Corporation	Sewing machine

Also Published As

Publication number	Publication date
JP2010005403A (ja)	2010-01-14
CN101613912B (zh)	2012-11-21
CN101613912A (zh)	2009-12-30
EP2138620B1 (fr)	2012-05-16
JP5286172B2 (ja)	2013-09-11
KR20100002168A (ko)	2010-01-06
KR101532097B1 (ko)	2015-06-26
DE102008030797A1 (de)	2009-12-31

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