EP2025790B1 - Transporter for transporting sewing material while operating a sewing machine - Google Patents
Transporter for transporting sewing material while operating a sewing machine Download PDFInfo
- Publication number
- EP2025790B1 EP2025790B1 EP08013805.0A EP08013805A EP2025790B1 EP 2025790 B1 EP2025790 B1 EP 2025790B1 EP 08013805 A EP08013805 A EP 08013805A EP 2025790 B1 EP2025790 B1 EP 2025790B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- feeder
- needle
- base body
- needle plate
- feed portion
- 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 35
- 239000000463 material Substances 0.000 title description 6
- 230000007704 transition Effects 0.000 claims description 25
- 239000004744 fabric Substances 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 4
- 230000007257 malfunction Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
-
- 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
-
- 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
- D05B27/08—Work-feeding means with feed dogs having horizontal and vertical movements with differential feed motions
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B35/00—Work-feeding or -handling elements not otherwise provided for
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B51/00—Applications of needle-thread guards; Thread-break detectors
Definitions
- the invention relates to a conveyor for the transport of sewing material during the operation of a sewing machine according to the preamble of claim 1.
- Such a carrier is known by public prior use.
- the needle thread undesirably wraps around a transport section of the conveyor, which is also referred to as a thread loop design. This can lead to a malfunction of the sewing machine, in particular to an undesirable crack of the needle thread.
- the DE-A-77872 describes a multi-part conveyor with a feed dog, whose working movement is guided by interaction with a backdrop, which is formed by two rails and a guideway.
- the edge contour of the carrier is configured edge-free.
- the needle thread loop or loop forming during operation of the sewing needle does not offer any edge on the feed dog around which it could undesirably wind.
- a web according to claim 2 requires little material and at the same time reliably prevents unwanted thread looping.
- a transition element according to claim 3 can be easily manufactured.
- a web according to claim 4 requires very little material.
- An embodiment of the conveyor according to claim 5 prevents unwanted thread looping even with a conveyor for a two-needle operation of the sewing machine.
- a sewing machine 1 has a base plate 2 with a stand 3 extending upwardly therefrom and an angled arm 4. The latter ends in a head 5.
- an arm shaft 6 is rotatably mounted, which drives a crank mechanism 7 with a thread lever 8 in the head 5.
- the crank drive 7 is drivingly connected to a displaceably mounted in the head 5 needle bar 9 in conjunction.
- the latter has a sewing needle 10 at its lower end.
- the sewing needle 10 can be moved up and down by the crank mechanism 7. In this case, the sewing needle 10 passes through a movement space.
- the sewing needle 10 leads in an eye from a spool 12 via a thread tensioning device and the thread lever 8 supplied needle thread 13th
- a support or throat plate 14 is mounted, on which a workpiece 15 rests.
- the support plate 14 has a feed gate opening or throat plate recess 16, which is responsible for the passage of a Transporteurs or feed dog 17 is formed.
- the conveyor 17 is designed for operation with a two-needle sewing machine and has two transverse to a sewing direction N adjacent stitch holes 18, 18 a, of which, like the Fig. 3 shows only that in the Fig. 3 used lower tap hole 18, so will pass from the sewing needle 10.
- the conveyor 17 is driven by a driven below the base plate 2 thrust and lifting gear.
- a gripper 19 is arranged, which has a gripper body 20 with a gripper tip 21.
- the latter is firmly connected to a shaft which has a vertical axis of rotation 22 extending parallel to the needle bar 9.
- This shaft is rotatably mounted in a bearing block 23 screwed to the base plate 2.
- a drive shaft 24 is also mounted, which is connected to a arranged in the interior of the bearing block 23 gear transmission.
- the drive shaft 24 is drivingly connected to the arm shaft 6 via a belt drive 25.
- FIGS. 2 and 3 show the stitching area of the sewing machine 1 more in detail. Shown is the situation after the sewing needle 10 is withdrawn from the tap hole 18 out again towards the top dead center.
- the needle thread 13 forms below the stitch hole 18 a needle thread loop 26, which is knotted in the subsequent knotting with a lower thread 27.
- the latter is fed to the stitch formation area by a bobbin or thread winding housing 27a accommodated in the gripper body 20.
- FIG. 4 to 6 show the conveyor 17 in detail.
- This has two upper transport sections 28, 28a, each with one on both sides of the stitch holes 18, 18a sawtooth-like fluted surface for frictional engagement with the fabric 15.
- the transport section 28 performs in the feed gate opening 16, ie in the throat plate recess a transport movement, controlled by the push and screw gear.
- the transport sections 28, 28a are fixedly connected to a feed carrier in the form of a support beam 29a, which in turn is part of the thrust and lifting gear for the conveyor 17.
- the transition element 35 has a linearly varying width.
- the transition element 35 ie, the web, a thickness 36, measured at the transition to the transport sections 28, 28a on the one hand and the body 29 on the other hand, is less than the strength of the transport sections 28, 28a on the one hand and the main body 29th on the other hand.
- the edge-free transition through the edge contour transition element 35 ensures that the needle thread loop 26 under no circumstances by one of the transport sections 28, 28 a, in the after Fig. 3 illustrated use of the sewing machine to the transport section 28, unwanted wrap and thus can lead to a malfunction of the sewing machine 1.
- the needle loop 26 slides along the edge contours 32, 33 and along the edge contour transition element 35, without an edge here opposes a resistance, so that the needle thread 13 does not hang on a projection of the conveyor 17.
- Fig. 7 to 9 show a further embodiment of a conveyor 37, designed for exclusive use in a single-needle sewing machine.
- Components and functions corresponding to those described above with reference to FIGS Fig. 1 to 6 have the same reference numbers and will not be explained in detail again.
- the feed dog 37 has exactly one tap hole 18 and a transport section 28.
- the single-needle feed dog 37 comes at most with the needle thread loop 26 in the Fig. 8 right side of the carrier 37 in contact. Therefore, the edge contour transition element 35 is present on this side, wherein the edge contour transition element 35 ensures a corresponding edge-free transition between the edge contour 32 of the transport section 28 and the edge contour 33 of the base body 29.
- the transition element 35 is formed as a web which has, on the other hand, a linearly varying width between the transitions to the transport section 28 on the one hand and to the main body 29.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Description
Die Erfindung betrifft einen Transporteur zum Transport von Nähgut während des Betriebs einer Nähmaschine nach dem Oberbegriff des Anspruchs 1.The invention relates to a conveyor for the transport of sewing material during the operation of a sewing machine according to the preamble of claim 1.
Ein derartiger Transporteur ist durch offenkundige Vorbenutzung bekannt. Bei ungünstigen Betriebsbedingungen kann es dazu kommen, dass sich der Nadelfaden um einen Transportabschnitt des Transporteurs unerwünscht wickelt, was auch als Fadenschlingenwurf bezeichnet wird. Dies kann zu einer Betriebsstörung der Nähmaschine, insbesondere zu einem unerwünschten Riss des Nadelfades führen.Such a carrier is known by public prior use. In unfavorable operating conditions, it may happen that the needle thread undesirably wraps around a transport section of the conveyor, which is also referred to as a thread loop design. This can lead to a malfunction of the sewing machine, in particular to an undesirable crack of the needle thread.
Die
Aus der
Es ist eine Aufgabe der vorliegenden Erfindung, einen Transporteur der eingangs genannten Art derart weiterzubilden, dass ein unerwünschter Fadenschlingenwurf verhindert ist.It is an object of the present invention to develop a conveyor of the type mentioned in such a way that an undesirable thread loop throw is prevented.
Diese Aufgabe ist erfindungsgemäß gelöst durch einen Transporteur mit den im Kennzeichnungsteil des Anspruchs 1 angegebenen Merkmalen.This object is achieved by a conveyor with the features specified in the characterizing part of claim 1.
Erfindungsgemäß wurde erkannt, dass ein unerwünschter Fadenschlingenwurf vermieden werden kann, wenn die Randkontur des Transporteurs kantenfrei ausgestaltet ist. Hierdurch wird der sich im Betrieb der Nähnadel ausbildenden Nadelfadenschlaufe bzw. -schlinge keine Kante am Transporteur angeboten, um die sich diese unerwünscht wickeln könnte.According to the invention, it has been recognized that an unwanted thread loop throw can be avoided if the edge contour of the carrier is configured edge-free. As a result, the needle thread loop or loop forming during operation of the sewing needle does not offer any edge on the feed dog around which it could undesirably wind.
Ein Steg nach Anspruch 2 benötigt wenig Material und verhindert gleichzeitig sicher den unerwünschten Fadenschlingenwurf.A web according to claim 2 requires little material and at the same time reliably prevents unwanted thread looping.
Ein Übergangselement nach Anspruch 3 lässt sich einfach fertigen.A transition element according to claim 3 can be easily manufactured.
Ein Steg nach Anspruch 4 benötigt besonders wenig Material.A web according to claim 4 requires very little material.
Eine Ausführung des Transporteurs nach Anspruch 5 verhindert einen unerwünschten Fadenschlingenwurf auch bei einem Transporteur für einen Zweinadel-Betrieb der Nähmaschine.An embodiment of the conveyor according to claim 5 prevents unwanted thread looping even with a conveyor for a two-needle operation of the sewing machine.
Die Vorteile einer Nähmaschine nach Anspruch 6 entsprechen denen, die vorstehend unter Bezugnahme auf den erfindungsgemäßen Transporteur erläutert wurden.The advantages of a sewing machine according to
Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung näher erläutert. In dieser zeigen:
- Fig. 1
- eine teilweise innere Details freigebende Seitenansicht einer Nähmaschine;
- Fig. 2
- vergrößert und stärker im Detail einen Stichbildungsbereich der Nähmaschine nach
Fig. 1 mit einer Nähnadel, einem Greifer sowie einem Transporteur für Nähgut, wobei der Transporteur zum Einsatz in einer Zweinadel-Nähmaschine ausgebildet ist; - Fig. 3
- eine Ansicht gemäß Blickrichtung III in
Fig. 2 ; - Fig. 4
- perspektivisch den Transporteur der Ausführung nach den
Figuren 2 und 3 ; - Fig. 5
- den Transporteur nach
Fig. 4 , gesehen von oben, also bei montiertem Transporteur, gesehen in einer Projektion auf eine Stichplattenebene der Nähmaschine; - Fig. 6
- den Transporteur nach
Fig. 4 , gesehen von unten; - Fig. 7
- perspektivisch in einer zu
Fig. 4 ähnlichen Darstellung eine weitere Ausführung eines Transporteurs für eine Einnadel-Nähmaschine; - Fig. 8
- den Transporteur nach
Fig. 7 von oben; - Fig. 9
- den Transporteur nach
Fig. 7 von unten.
- Fig. 1
- a partial interior detail releasing side view of a sewing machine;
- Fig. 2
- enlarged and more detail in detail stitching area of the sewing machine
Fig. 1 with a sewing needle, a gripper and a conveyor for sewing material, wherein the feed dog is designed for use in a two-needle sewing machine; - Fig. 3
- a view according to viewing direction III in
Fig. 2 ; - Fig. 4
- in perspective, the conveyor of the execution of the
FIGS. 2 and 3 ; - Fig. 5
- the transporter after
Fig. 4 seen from above, so with mounted transporter, seen in a projection on a stitch plate plane of the sewing machine; - Fig. 6
- the transporter after
Fig. 4 seen from below; - Fig. 7
- in perspective in one too
Fig. 4 similar representation of another embodiment of a conveyor for a single-needle sewing machine; - Fig. 8
- the transporter after
Fig. 7 from above; - Fig. 9
- the transporter after
Fig. 7 from underneath.
Eine Nähmaschine 1 weist eine Grundplatte 2 mit einem sich davon aufwärts erstreckenden Ständer 3 und einem abgewinkeltem Arm 4 auf. Letzterer endet in einem Kopf 5. In dem Arm 4 ist drehbar eine Armwelle 6 gelagert, die in dem Kopf 5 einen Kurbeltrieb 7 mit einem Fadenhebel 8 antreibt. Der Kurbeltrieb 7 steht antriebsmäßig mit einer in dem Kopf 5 verschiebbar gelagerten Nadelstange 9 in Verbindung. Letztere hat an ihrem unteren Ende eine Nähnadel 10. Die Nähnadel 10 ist vom Kurbeltrieb 7 auf und ab bewegbar. Hierbei durchläuft die Nähnadel 10 einen Bewegungsraum. Die Nähnadel 10 führt in einem Öhr einen von einer Spule 12 über eine Fadenspannvorrichtung und den Fadenhebel 8 zugeführten Nadelfaden 13.A sewing machine 1 has a base plate 2 with a stand 3 extending upwardly therefrom and an angled arm 4. The latter ends in a
Auf der Grundplatte 2 ist eine Auflage- bzw. Stichplatte 14 montiert, auf der ein Nähgutteil 15 aufliegt. Die Auflageplatte 14 hat eine Stoffschieber-Öffnung bzw. Stichplatten-Ausnehmung 16, die für den Durchtritt eines Transporteurs bzw. Stoffschiebers 17 ausgebildet ist. Der Transporteur 17 ist zum Betrieb mit einer Zweinadel-Nähmaschine ausgelegt und hat zwei quer zu einer Nährichtung N nebeneinander liegende Stichlöcher 18, 18a, von denen, wie die
Unterhalb der Auflageplatte 14 ist ein Greifer 19 angeordnet, der einen Greiferkörper 20 mit einer Greiferspitze 21 aufweist. Letzterer ist fest mit einer Welle verbunden, die eine sich parallel zur Nadelstange 9 erstreckende, vertikale Drehachse 22 aufweist. Gelagert ist diese Welle drehbar in einem mit der Grundplatte 2 verschraubten Lagerbock 23. In diesem ist zudem eine Antriebswelle 24 gelagert, die mit einem im Innern des Lagerbocks 23 angeordneten Zahnradgetriebe verbunden ist. Die Antriebswelle 24 ist über einen Riementrieb 25 antriebsmäßig mit der Armwelle 6 verbunden.Below the
Entsprechend der Unterteilung des Transporteurs 17 mit zwei Stichlöchern 18, 18a hat der Transporteur 17 nach den
Über den Grundkörper 29 sind die Transportabschnitte 28, 28a fest mit einem Transporteur-Träger in Form eines Tragbalkens 29a verbunden, der seinerseits Teil des Schub- und Hubgetriebes für den Transporteur 17 ist.About the
Der Aufsicht nach
Bei der Zweinadel-Ausführung nach den
Der Transporteur 37 hat genau ein Stichloch 18 und einen Transportabschnitt 28. Beim Einnadel-Transporteur 37 kommt die Nadelfadenschlaufe 26 allenfalls mit der in der
Claims (6)
- Feeder (17; 37) for feeding fabric (15) during the operation of a sewing machine (1), the feeder (17; 37) comprising- at least one feed portion (28, 28a; 28) which is designed for frictional interaction with the fabric (15) and for performing a feed movement in a needle plate recess (16) of a needle plate (14);- a base body (29) by means of which the feed portion (28, 28a; 28) is rigidly connected to a feeder carrier (29a);characterized in that- a peripheral contour (32) of the feed portion (28, 28a; 28) seamlessly merges with a peripheral contour (33) of the base body (29), seen with mounted feeder (17; 37) in a projection onto a needle plate plane (34),- the feeder has exactly one stitch hole (18) or two stitch holes (18, 18a) disposed next to each other in a direction perpendicular to a sewing direction (N).
- Feeder according to claim 1, characterized in that a peripheral-contour transition member (35) between the feed portion (28, 28a; 28) and the base body (29) is formed by a web whose width - seen with mounted feeder (17; 37) in a projection onto a needle plate plane (34)-at the transition to the base body (29) equals the width of the base body (29), and at the transition to the feed portion (28, 28a; 28) equals the width of the feed portion (28, 28a; 28).
- Feeder according to claim 2, characterized in that the transition member (35) between the transitions has a width that changes linearly.
- Feeder according to one of claims 2 or 3, characterized in that perpendicular to the needle plate plane (34), the web (35) has a thickness which, at the respective transition, is smaller than the thickness of the feed portion (28, 28a; 28) and that of the base body (29).
- Feeder according to one of claims 1 to 4, characterized by a feed portion (28, 28a) comprising two feed-portion subunits (28, 28a) disposed next to each other for use in a double-needle sewing machine, wherein the peripheral contour (32) of the feed portion (28, 28a) seamlessly merges with a peripheral contour (33) of the base body (29) on both sides of the feeder (37), wherein the base body (29) is seen with mounted feeder (37) in a projection onto a needle plate plane (34).
- Sewing machine comprising- a needle plate (14) comprising a needle plate recess (16);- a needle bar (9) comprising a sewing needle (10) attachable thereto, said needle bar (9) being driven for up and down movement above the stitch plate (14);- a feeder (17; 37) according to one of claims 1 to 5, the feeder (17; 37) being disposed in the needle plate recess (16) for performing a feed movement.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202007011553U DE202007011553U1 (en) | 2007-08-17 | 2007-08-17 | Transporter for the transport of sewing material during the operation of a sewing machine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2025790A2 EP2025790A2 (en) | 2009-02-18 |
EP2025790A3 EP2025790A3 (en) | 2011-10-19 |
EP2025790B1 true EP2025790B1 (en) | 2015-03-04 |
Family
ID=40122466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08013805.0A Active EP2025790B1 (en) | 2007-08-17 | 2008-08-01 | Transporter for transporting sewing material while operating a sewing machine |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2025790B1 (en) |
JP (1) | JP2009045460A (en) |
KR (1) | KR101424287B1 (en) |
CN (1) | CN101368319B (en) |
DE (1) | DE202007011553U1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5296215B2 (en) | 2009-03-04 | 2013-09-25 | エルジー・ケム・リミテッド | ELECTROLYTE CONTAINING AMIDE COMPOUND AND ELECTROCHEMICAL DEVICE HAVING THE SAME |
JP5522981B2 (en) * | 2009-06-18 | 2014-06-18 | 日本発條株式会社 | Lower feed mechanism of sewing device and sewing device |
WO2022129332A1 (en) | 2020-12-16 | 2022-06-23 | Jt International Sa | Heat not burn filament system |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE77872C (en) * | J. L. FOLLETT, New-York, V. St. A | Knife slide drive for sewing machines with swinging hook | ||
US1329636A (en) * | 1915-12-27 | 1920-02-03 | Albert D Smith | Feed for sewing-machines |
US1543945A (en) * | 1921-04-19 | 1925-06-30 | Union Special Machine Co | Feeding mechanism for sewing machines |
FR973974A (en) * | 1948-09-07 | 1951-02-16 | Advanced sewing machine feed system | |
US3467039A (en) * | 1967-11-20 | 1969-09-16 | Singer Co | Work feeding mechanisms for sewing machines |
CN2349226Y (en) * | 1998-02-09 | 1999-11-17 | 卢金荣 | Feeding mechanism for sewing machine |
US5979346A (en) * | 1998-03-12 | 1999-11-09 | Rodriguez; Rosty | Automatic stitching apparatus |
JP4261698B2 (en) * | 1999-01-21 | 2009-04-30 | Juki株式会社 | Sewing machine cloth feed mechanism |
JP2004174120A (en) * | 2002-11-29 | 2004-06-24 | Juki Corp | Feeding device of sewing machine |
DE102005029955A1 (en) * | 2005-06-28 | 2007-01-04 | Dürkopp Adler AG | sewing machine |
-
2007
- 2007-08-17 DE DE202007011553U patent/DE202007011553U1/en not_active Expired - Lifetime
-
2008
- 2008-08-01 EP EP08013805.0A patent/EP2025790B1/en active Active
- 2008-08-13 JP JP2008208519A patent/JP2009045460A/en active Pending
- 2008-08-14 KR KR1020080079913A patent/KR101424287B1/en active IP Right Grant
- 2008-08-14 CN CN200810129878XA patent/CN101368319B/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP2025790A2 (en) | 2009-02-18 |
DE202007011553U1 (en) | 2008-12-24 |
JP2009045460A (en) | 2009-03-05 |
CN101368319A (en) | 2009-02-18 |
KR101424287B1 (en) | 2014-07-31 |
CN101368319B (en) | 2013-06-05 |
EP2025790A3 (en) | 2011-10-19 |
KR20090018583A (en) | 2009-02-20 |
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