EP3088590B1 - Sewing machine - Google Patents
Sewing machine Download PDFInfo
- Publication number
- EP3088590B1 EP3088590B1 EP16163866.3A EP16163866A EP3088590B1 EP 3088590 B1 EP3088590 B1 EP 3088590B1 EP 16163866 A EP16163866 A EP 16163866A EP 3088590 B1 EP3088590 B1 EP 3088590B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stitch
- drive
- sewing machine
- machine according
- loosening
- 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
Links
- 238000009958 sewing Methods 0.000 title claims description 43
- 230000007935 neutral effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 2
- 230000005355 Hall effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 11
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 239000004744 fabric Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000004826 seaming Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B23/00—Sewing apparatus or machines not otherwise provided for
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B47/00—Needle-thread tensioning devices; Applications of tensometers
- D05B47/04—Automatically-controlled tensioning devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/30—Details
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Description
Die Erfindung betrifft eine Nähmaschine mit einem Stichlockerungsfinger nach dem Oberbegriff des Anspruchs 1.The invention relates to a sewing machine with a stitch loosening finger according to the preamble of
Eine derartige Nähmaschine ist bekannt aus der Bedienungsanleitung "
Der angetriebene Stichlockerungsfinger dient zum Auflockern einer Naht während des Nähens. Dies kann beispielsweise beim Nähen von Schulterpolstern genutzt werden.The driven stitch loosening finger is used to loosen a seam during sewing. This can be used, for example, when sewing shoulder pads.
Es ist eine Aufgabe der vorliegenden Erfindung, eine Nähmaschine der eingangs genannten Art derart weiterzubilden, dass der Antrieb des Stichlockerungsfingers vereinfacht ist.It is an object of the present invention, a sewing machine of the type mentioned in such a way that the drive of the Stichlockerungsfingers is simplified.
Diese Aufgabe ist erfindungsgemäß gelöst durch eine Nähmaschine mit den im Anspruch 1 angegebenen Merkmalen.This object is achieved by a sewing machine with the features specified in
Erfindungsgemäß wurde erkannt, dass dann, wenn der Stichlockerungsantrieb armwellenseitig erfolgt, eine kostspielige Mechanik eines unterwellenseitigen Stichlockerungsantriebs vermieden werden kann. Der Positionssensor erlaubt einen Rückschluss auf die Momentanposition bewegter Komponenten des Stichlockerungsantriebs. Dies kann beispielsweise zu Dokumentationszwecken sinnvoll sein. Hierzu kann die Nähmaschine eine Dokumentationseinrichtung aufweisen, die mit dem Positionssensor in Signalverbindung steht. Die Dokumentationseinrichtung kann so ausgeführt sein, dass sie Dokumentationsdaten zur Verfügung stellt, zu denen die Momentanposition des Stichlockerungsantriebes, die Momentanposition der Stichbildungswerkzeuge während eines Nahtverlaufes gehören können.According to the invention, it has been recognized that when the stitchlocker drive is on the arm shaft side, costly mechanics of a subshaft-side stitchlocker drive can be avoided. The position sensor allows a conclusion on the instantaneous position of moving components of the stitch blocker drive. This can for example Be useful for documentation purposes. For this purpose, the sewing machine may have a documentation device, which is in signal communication with the position sensor. The documentation facility can be executed in this way be that it provides documentation data, which may include the current position of the stitchlocker drive, the instantaneous position of the stitching tools during a seaming process.
Eine Kurvenscheibe nach Anspruch 2 hat sich als Antriebskomponente bewährt.A cam according to
Dies gilt genauso für einen Zahnriemen nach Anspruch 3.This also applies to a toothed belt according to
Eine Lagerung nach Anspruch 4 im Bereich einer Drückerfußstange ergibt einen Drehpunkt des Stichlockerungsfingers um eine Drückerfußstangenachse. Dies hat sich für den Stichlockerungsantrieb als besonders geeignet herausgestellt.A mounting according to
Ein Positionssensor nach Anspruch 5 erlaubt einen Rückschluss auf die Momentanposition des Stichlockerungsfingers.A position sensor according to claim 5 allows a conclusion on the instantaneous position of the stitch loosening finger.
Eine Abschalteinrichtung nach Anspruch 6 stellt sicher, dass der Stichlockerungsantrieb in einer definierten Position der Komponenten des Stichlockerungsantriebs erfolgt. Dies ist betriebssicher. Eine derartige Abschalteinrichtung kann auch bei Gestaltungen eines Stichlockerungsantriebs zum Einsatz kommen, bei dem die Armwelle nicht Teil des Stichlockerungsantriebs ist.A shutdown device according to
Eine Momentanpositionserfassung nach Anspruch 7 lässt sich kostengünstiger realisieren.A current position detection according to
Ein Hall-Sensor nach Anspruch 8 führt zu einer genauen Positionsmessung. Ein mit dem Hall-Sensor zusammenwirkender Magnet kann zum Beispiel in der Kurvenscheibe integriert sein. Der Hall-Sensor kann benachbart zur bewegten Stichlockerungsantriebskomponente, die den Magneten aufweist, gehäusefest angeordnet sein.A Hall sensor according to
Eine Abschalteinrichtung nach Anspruch 9 ermöglicht ein automatisiertes Abschalten des Stichlockerungsantriebs. Dieses automatisierte Ab- und gegebenenfalls Zuschalten des Stichlockerungsantriebs kann in ein Nähprogramm integriert werden.A shutdown device according to
Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung näher erläutert. In dieser zeigen:
- Fig. 1
- perspektivisch eine Nähmaschine, wobei abgesehen von Antriebskomponenten für einen Stichlockerungsfinger andere interne und externe Nähmaschinenkomponenten weggelassen sind;
- Fig. 2
- ebenfalls perspektivisch die Antriebskomponenten für den Antrieb des Stichlockerungsfingers;
- Fig. 3
- diese Antriebskomponenten aus einer anderen Perspektive;
- Fig. 4
- vergrößert und im Detail einen Ausschnitt der Antriebskomponenten im Bereich einer Kurvenscheibe in einer ersten Extremposition des Stichlockerungsfingers;
- Fig. 5
- den Stichlockerungsfinger in der Extremposition, die der Position der Antriebskomponenten nach
Fig. 4 entspricht; - Fig. 6
- in einer zu
Fig. 4 ähnlichen Darstellung die Antriebskomponenten in einer Stellung einer weiteren Extremposition des Stichlockerungsfingers; - Fig. 7
- den Stichlockerungsfinger in der Extremposition, die der Position der Antriebskomponenten nach
Fig. 6 entspricht; - Fig. 8
- wiederum einen Ausschnitt des Stichlockerungsantriebs zusammen mit Lagerkomponenten und weiteren Komponenten der Nähmaschine, im Bereich einer Kurvenscheibe des Stichlockerungsantriebs; und
- Fig. 9
- in einer zur
Fig. 8 ähnlichen Darstellung, allerdings aus einer anderen Blickrichtung, die Komponenten des Stichlockerungsantriebs, wobei eine Abschalteinrichtung zum Abschalten des Stichlockerungsantriebs aktiviert ist.
- Fig. 1
- in perspective, a sewing machine, wherein apart from drive components for a stitch loosening finger other internal and external sewing machine components are omitted;
- Fig. 2
- also in perspective the drive components for driving the stitch loosening finger;
- Fig. 3
- these propulsion components from a different perspective;
- Fig. 4
- enlarged and in detail a section of the drive components in the region of a cam in a first extreme position of the stitch loosening finger;
- Fig. 5
- the stitch loosening finger in the extreme position, the position of the drive components after
Fig. 4 corresponds; - Fig. 6
- in one too
Fig. 4 similar representation, the drive components in a position of another extreme position of the stitch loosening finger; - Fig. 7
- the stitch loosening finger in the extreme position, the position of the drive components after
Fig. 6 corresponds; - Fig. 8
- again a section of the Stichlockerungsantriebs together with bearing components and other components of the sewing machine, in the region of a cam of the Stichlockerungsantriebs; and
- Fig. 9
- in a to
Fig. 8 similar representation, but from a different angle, the components of the Stichlockerungsantriebs, with a turn-off device is activated to switch off the Stichlockerungsantriebs.
Eine Nähmaschine 1 dient insbesondere zum Vernähen von Schulterpolstern, die aus zwei dünnen Deckstoffen und einer mittleren Lage in Form einer wattierten Einlage bestehen.A
Die Nähmaschine 1 hat eine Grundplatte 2, einen Ständer 3 und einen Arm 4 mit einem Kopf 5. Ein Stichbildungsbereich ist an der Oberseite einer Säule 6 ausgeführt, die sich von der Grundplatte 2 aus in Richtung des Kopfes 5 erstreckt.The
Die Nähmaschine 1 hat in üblicher Weise Stichbildungswerkzeuge zur Erzeugung einer Naht im Nähgutteil. Zu diesen Stichbildungswerkzeugen gehören eine in der
Die Nadelstange 7 wird über eine nicht mehr dargestellte Koppelmechanik von einer Armwelle 9 angetrieben, die in der
Zum Auflockern der Naht während des Nähens dient ein Stichlockerungsfinger 10, der während der Nahtbildung übernäht wird. Solange beispielsweise beim Schulterpolsternähen die Nähmaschine 1 nur die zwei Deckstofflagen anfangs- und endseitig zusammennäht, bleibt der Stichlockerungsfinger 10 inaktiv. In der inaktiven Stellung erstreckt sich der Stichlockerungsfinger 10 in etwa parallel zur Nährichtung x.To loosen the seam during sewing is a
Sobald die Zwischenlage, also die wattierte Einlage, mit vernäht wird, wird der Stichlockerungsfinger 10 aktiviert und lockert einen Nadelfaden bei der Stichbildung, damit die wattierte Einlage beim Nähen nicht unerwünscht zusammengedrückt wird. Der aktivierte Stichlockerungsfinger 10 wird um eine zur z-Achse (vgl.
Zur Aktivierung des Stichlockerungsfingers 10 wird dieser durch einen Stichlockerungsantrieb 11 angetrieben, dessen Antriebskomponenten beispielsweise in der
Die Armwelle 9 ist Teil des Stichlockerungsantriebs 11. Über die Armwelle 9 und ein hiermit drehfest verbundenes Armwellenzahnrad 12 wird ein erster Zahnriemen 13 angetrieben, der mit einem weiteren Zahnrad 14 kämmt, das drehfest mit einer im Arm 4 untergebrachten Zwischenwelle 15 verbunden ist. Ein weiteres Zwischenwellenzahnrad 16 treibt einen weiteren Zahnriemen 17 an, der mit einem weiteren Zahnrad 18 kämmt, das drehfest mit einer ebenfalls im Arm 4 untergebrachten Kurvenscheibenwelle 19 verbunden ist. Die Armwelle 9, die Zwischenwelle 15 und die Kurvenscheibenwelle 19 verlaufen parallel zueinander längs der y-Richtung.The
Drehfest mit der Kurvenscheibenwelle 19 verbunden ist eine Kurvenscheibe 20, die von einem Abtastkörper 21 abgetastet wird. Eine Umfangs- bzw. Radiusmodulation der Kurvenscheibe wird über dieses Abtasten übertragen in eine Schwingung (vgl. Doppelpfeil 22a) einer parallel zur z-Richtung verlaufenden Übertragungswelle 22. Über eine Hebelgelenkverbindung mit Übertragungshebeln 23, 24, 25 und 26 erfolgt abgeleitet von der Schwingbewegung der Übertragungswelle 22 die Hin- und Herbewegung des Stichlockerungsfingers 10.Rotatably connected to the
Der Übertragungshebel 23 schwingt dabei um eine durch eine Längsachse der Übertragungswelle 22 vorgegebenen Schwingachse. Der Übertragungshebel 25 schwingt um eine parallel zur z-Achse verlaufende Lagerachse 27, die von einer gehäusefesten Lagerung 28 vorgegeben ist. Der Übertragungshebel 26 ist zweiteilig und besteht aus einer Lagerkomponente 26a und einer einstückig mit dem Stichlockerungsfinger 10 verbundenen Hebelkomponente 26b. Der Übertragungshebel 26 schwingt um eine weitere, parallel zur z-Richtung verlaufende Lagerachse 29, die durch eine gehäusefeste Lagerung um eine Drückerfußstange 30 vorgegeben ist, die in der
Bei dieser Extremposition handelt es sich um einen Umkehrpunkt der Bewegung des Stichlockerungsfingers 10.This extreme position is a reversal point of the movement of the
In der Position nach den
Die
Anhand der
Der Positionssensor 38 dient zur Erfassung einer Momentanposition einer bewegten Komponente des Stichlockerungsantriebs 11, nämlich einer Momentanposition der Kurvenscheibe 20. Der Positionssensor 38 ist benachbart zur Kurvenscheibe 20 angeordnet.The
Die Abschalteinrichtung 37 hat weiterhin einen Verlagerungsantrieb 40 zum Verlagern des Abtastkörpers 21 zwischen einer beispielsweise in den
Der Verlagerungsantrieb 40 steht mit dem Positionssensor 38 in Signalverbindung.The
Der Verlagerungsantrieb 40 wird, wie auch die anderen Antriebskomponenten der Nähmaschine 1, von einer in der
Zum Abschalten des Stichlockerungsantriebs 11 wartet die Steuereinrichtung 42 auf ein Positionssignal des Positionssensors 38. Abhängig von dem Positionssignal schaltet die Steuereinrichtung 42 den Stichlockerungsantrieb 11 durch Aktivieren des Verlagerungsantriebs 40 ab, sobald der Stichlockerungsfinger 10 die Momentanposition nach
Claims (9)
- Sewing machine (1),- having stitch-formation tools (7, 8) for generating a seam in a sewn article part, a needle bar (7) being associated with said stitch-formation tools (7);- having an arm shaft (9) for driving the needle bar (7);- having a stitch loosening finger (10) for loosening the seam during sewing;- wherein the stitch loosening finger (10) is driven by a stitch loosening drive (11) such that the stitch loosening finger (10) during sewing is moved so as to reciprocate transversely to a sewing direction (x);- wherein the arm shaft (9) is part of the stitch loosening drive (11),characterized in that
a position sensor (38) for detecting a momentary specific position of a moving component (20) of the stitch loosening drive (11) is provided. - Sewing machine according to Claim 1, characterized in that a cam disc (20) which is driven by way of the arm shaft (9) and which is sensed by a sensor element (21) which is mechanically coupled to the stitch loosening finger (10) is part of the stitch loosening drive (11).
- Sewing machine according to Claim 2, characterized in that a timing belt (13, 17) is part of a drive of the cam disc (20).
- Sewing machine according to Claim 2 or 3, characterized in that a mounting of an articulated connection (22 to 26) between the sensor element (21) and the stitch loosening finger (10) takes place in the region of a presser foot bar (30).
- Sewing machine according to one of Claims 1 to 4, characterized in that the position sensor (38) is configured for detecting a momentary specific position of the stitch loosening finger (10).
- Sewing machine according to Claim 5, characterized by a switch-off installation (37) which, for switching off the stitch loosening drive (11) depending on a position signal of the position sensor (38), in terms of signals is connected to the position sensor (38).
- Sewing machine according to Claim 5 or 6, referring back to Claim 2, characterized in that the position sensor (38) is embodied in such a manner that said position sensor (38) detects a momentary specific position of the cam disc (20).
- Sewing machine according to one of Claims 5 to 7, characterized in that the position sensor (38) is embodied as a Hall effect sensor.
- Sewing machine according to one of Claims 6 to 8, characterized in that the switch-off installation (37) has a repositioning drive (40) for repositioning the sensor element (21) between- a sensing position in which the sensor element (21) senses the cam disc (20), and- a neutral position in which the sensor element (21) is withdrawn from the cam disc (20) such that the stitch loosening drive (11) is ineffective,wherein the repositioning drive (40) in terms of signals is connected to the position sensor (38).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015207993.7A DE102015207993A1 (en) | 2015-04-30 | 2015-04-30 | sewing machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3088590A1 EP3088590A1 (en) | 2016-11-02 |
EP3088590B1 true EP3088590B1 (en) | 2018-11-14 |
Family
ID=55701763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16163866.3A Active EP3088590B1 (en) | 2015-04-30 | 2016-04-05 | Sewing machine |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP3088590B1 (en) |
JP (1) | JP6821323B2 (en) |
KR (1) | KR102503364B1 (en) |
CN (1) | CN106087290B (en) |
DE (1) | DE102015207993A1 (en) |
TW (1) | TWI683935B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110079941B (en) * | 2018-01-26 | 2021-06-25 | 拓卡奔马机电科技有限公司 | Line sweeping device of electronic pattern sewing machine |
JP7262311B2 (en) * | 2019-06-04 | 2023-04-21 | Juki株式会社 | sewing system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2942166A1 (en) * | 1979-10-18 | 1981-04-30 | Dürkoppwerke GmbH, 4800 Bielefeld | DEVICE FOR DETERMINING THE THICKNESS OF ELASTIC MATERIAL |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB232479A (en) * | 1924-08-18 | 1925-04-23 | Charles Hiram Greenwood | Improvements in sewing machines |
DE1241688B (en) * | 1959-11-14 | 1967-06-01 | Duerkoppwerke Ag | Sewing machine for sewing elastic workpieces |
JP2001224875A (en) * | 2000-02-16 | 2001-08-21 | Brother Ind Ltd | Button floating device for button sewing machine |
JP2005334234A (en) * | 2004-05-26 | 2005-12-08 | Pegasus Sewing Mach Mfg Co Ltd | Cylinder type valance stitch sewing machine |
JP2008036341A (en) * | 2006-08-10 | 2008-02-21 | Juki Corp | Sewing machine |
CN200967879Y (en) * | 2006-11-13 | 2007-10-31 | 苏尚杰 | Pneumatic thread release mechanism for bead-edge making machine |
CN201144333Y (en) * | 2007-12-29 | 2008-11-05 | 温州市亨泰缝制设备有限公司 | Lower thread release mechanism for bead-edge sewing machine |
TWI484081B (en) * | 2010-11-30 | 2015-05-11 | Hsien Chang Tseng | Structure for adjusting a swinging arm and a swinging center of a sewing machine |
CN202047244U (en) * | 2011-04-28 | 2011-11-23 | 浙江鸿立缝制设备有限公司 | Cam thread throwing mechanism of flat seaming machine |
DE102011116910A1 (en) * | 2011-10-25 | 2013-04-25 | BO-INNO GmbH | Device for detecting rotational angle of shaft of servomotor or potentiometer, has rotary element provided with external thread and located in or on screw thread guide, and hall sensor detected at distance between sensor and magnet |
CN104372537B (en) * | 2014-11-14 | 2016-08-24 | 上海鲍麦克斯电子科技有限公司 | A kind of industrial sewing machine loose ends control system |
-
2015
- 2015-04-30 DE DE102015207993.7A patent/DE102015207993A1/en not_active Withdrawn
-
2016
- 2016-04-05 EP EP16163866.3A patent/EP3088590B1/en active Active
- 2016-04-25 KR KR1020160050248A patent/KR102503364B1/en active IP Right Grant
- 2016-04-26 CN CN201610265091.0A patent/CN106087290B/en active Active
- 2016-04-26 JP JP2016087922A patent/JP6821323B2/en active Active
- 2016-04-28 TW TW105113262A patent/TWI683935B/en active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2942166A1 (en) * | 1979-10-18 | 1981-04-30 | Dürkoppwerke GmbH, 4800 Bielefeld | DEVICE FOR DETERMINING THE THICKNESS OF ELASTIC MATERIAL |
Also Published As
Publication number | Publication date |
---|---|
JP2016209567A (en) | 2016-12-15 |
KR20160129732A (en) | 2016-11-09 |
CN106087290A (en) | 2016-11-09 |
TWI683935B (en) | 2020-02-01 |
JP6821323B2 (en) | 2021-01-27 |
EP3088590A1 (en) | 2016-11-02 |
CN106087290B (en) | 2020-10-23 |
KR102503364B1 (en) | 2023-02-23 |
DE102015207993A1 (en) | 2016-11-03 |
TW201704581A (en) | 2017-02-01 |
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