EP2025790A2 - Transporter for transporting sewing material while operating a sewing machine - Google Patents

Transporter for transporting sewing material while operating a sewing machine Download PDF

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Publication number
EP2025790A2
EP2025790A2 EP08013805A EP08013805A EP2025790A2 EP 2025790 A2 EP2025790 A2 EP 2025790A2 EP 08013805 A EP08013805 A EP 08013805A EP 08013805 A EP08013805 A EP 08013805A EP 2025790 A2 EP2025790 A2 EP 2025790A2
Authority
EP
European Patent Office
Prior art keywords
transport section
throat plate
base body
transporter
needle
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
EP08013805A
Other languages
German (de)
French (fr)
Other versions
EP2025790B1 (en
EP2025790A3 (en
Inventor
Johann Enns
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
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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 EP2025790A2 publication Critical patent/EP2025790A2/en
Publication of EP2025790A3 publication Critical patent/EP2025790A3/en
Application granted granted Critical
Publication of EP2025790B1 publication Critical patent/EP2025790B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means
    • D05B27/02—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
    • 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 edge contour of the carrier is configured edge-free.
  • the needle thread loop or loop forming in the 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.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

Transport unit (17) comprises a transport section (28a) having an edge contour which verges into an edge contour of a base body. An independent claim is also included for a sewing machine with the above transport unit. Preferred Features: An edge contour transition element is formed by a bar between the transport section and the base body and has a width which corresponds to the width of the transport section when the transport unit is mounted.

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.

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 in the 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 claim 6 correspond to those which have been explained above with reference to the conveyor according to the invention.

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.
Embodiments of the invention will be explained in more detail with reference to the drawing. In this show:
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 head 5. In the arm 4, 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

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 Fig. 3 zeigt, nur dass in der Fig. 3 untere Stichloch 18 genutzt, also von der Nähnadel 10 durchtreten wird. Der Transporteur 17 ist über ein unterhalb der Grundplatte 2 angetriebenes Schub- und Hubgetriebe angetrieben.On the base plate 2, 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.

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 support plate 14, 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. In this, 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.

Fig. 2 und 3 zeigen den Stichbildungsbereich der Nähmaschine 1 stärker im Detail. Dargestellt ist die Situation, nachdem die Nähnadel 10 aus dem Stichloch 18 heraus wieder in Richtung auf den oberen Totpunkt zu zurückgezogen ist. Der Nadelfaden 13 bildet unterhalb des Stichlochs 18 eine Nadelfadenschlaufe 26, die bei der anschließenden Verknotung mit einem Unterfaden 27 verknotet wird. Letzterer wird dem Stichbildungsbereich von einem im Greiferkörper 20 untergebrachten Spulen- bzw. Fadenwickelgehäuse 27a zugeführt. 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 bis 6 zeigen den Transporteur 17 im Detail. Dieser hat zwei obere Transportabschnitte 28, 28a mit jeweils einer beiderseits der Stichlöcher 18, 18a sägezahnartig geriffelten Oberfläche zum reibschlüssigen Zusammenwirken mit dem Nähgut 15. Der Transportabschnitt 28 führt in der Stoffschieber-Öffnung 16, also in der Stichplatten-Ausnehmung eine Transportbewegung, gesteuert vom Schub- und Hubgetriebe aus. 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.

Entsprechend der Unterteilung des Transporteurs 17 mit zwei Stichlöchern 18, 18a hat der Transporteur 17 nach den Figuren 2 bis 6 die zwei quer zur Nährichtung N nebeneinander liegendenden Transportabschnitte 28, 28a. Zwischen diesen ist in der Stichplatte 14 ein die Stoffschieber-Öffnung 16 in zwei Teilöffnungen 16, 16a für die Transportabschnitte 28, 28a unterteilender Steg 30 angeordnet.According to the subdivision of the conveyor 17 with two tap holes 18, 18 a of the conveyor 17 has after FIGS. 2 to 6 the two transverse to the sewing direction N adjacent transport sections 28, 28a. Between these, the feed gate opening 16 in the throat plate 14 in two partial openings 16, 16a for the transport sections 28, 28a dividing web 30 is arranged.

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 main body 29, 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.

Der Aufsicht nach Fig. 5 ist zu entnehmen, dass eine Randkontur 32 der Transportabschnitte 28, 28a in eine Randkontur 33 des Grundkörpers 29 in einer Aufsicht des Transporteurs 17, also gesehen bei montiertem Transporteur 17 in Projektion auf eine Stichplattenebene 34, kantenfrei übergeht. Für diesen kantenfreien Übergang sorgt ein Randkontur-Übergangselement 35 zwischen den Randkonturen 32 der Transportabschnitte 28, 28a und dem Grundkörper 29, welches durch einen Übergangssteg gebildet ist. Die Breite des Übergangsstegs 35 entspricht, wie der Aufsicht nach Fig. 5, also einer Projektion des Transporteurs 17 auf die Stichplattenebene 34 zu entnehmen ist, am Übergang zum Grundkörper 29 der Breite des Grundkörpers 29 und am Übergang zu den Transportabschnitten 28, 28a der Gesamtbreite dieser Transportabschnitte 28, 28a. Zwischen diesen Übergängen hat das Übergangselement 35 eine sich linear ändernde Breite. Senkrecht zur Stichplatteneben 34 hat das Übergangselement 35, also der Steg, eine Stärke 36, die, gemessen jeweils am Übergang zu den Transportabschnitten 28, 28a einerseits und zum Grundkörper 29 andererseits, geringer ist als die Stärke der Transportabschnitte 28, 28a einerseits und des Grundkörpers 29 andererseits.The supervision after Fig. 5 It can be seen that an edge contour 32 of the transport sections 28, 28a into an edge contour 33 of the base body 29 in a plan view of the conveyor 17, so seen when mounted transporter 17 in projection on a throat plate level 34, passes without edges. For this edge-free transition provides an edge contour transition element 35 between the edge contours 32 of the transport sections 28, 28a and the base body 29, which is formed by a transition bar. The width of the transition bar 35 corresponds, as the supervision to Fig. 5 Thus, a projection of the conveyor 17 can be seen on the throat plate level 34, at the transition to the main body 29 of the width of the base body 29 and at the transition to the transport sections 28, 28a of the total width of these transport sections 28, 28a. Between these transitions, the transition element 35 has a linearly varying width. Perpendicular For Stichplatteneben 34, 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.

Bei der Zweinadel-Ausführung nach den Fig. 2 bis 6 geht die Randkontur 32 der Transportabschnitte 28, 28a in die Randkontur 33 der Grundkörpers 29 in der Projektion gemäß Fig. 5 auf die Stichplattenebene 34, auf beiden Seiten des Transporteurs 17 kantenfrei über. Der kantenfreie Übergang durch das Randkontur-Übergangselement 35 sorgt dafür, dass die Nadelfadenschlaufe 26 sich unter keinen Umständen um einen der Transportabschnitte 28, 28a, bei der nach Fig. 3 dargestellten Verwendung der Nähmaschine um den Transportabschnitt 28, unerwünscht wickeln und somit zu einer Betriebsstörung der Nähmaschine 1 führen kann. Die Nadelschlaufe 26 gleitet längs der Randkonturen 32, 33 und längs des Randkontur-Übergangselements 35, ohne dass hier eine Kante einen Widerstand entgegensetzt, also ohne dass der Nadelfaden 13 an einem Vorsprung des Transporteurs 17 hängen bleibt.In the two-needle version after the Fig. 2 to 6 the edge contour 32 of the transport sections 28, 28a in the edge contour 33 of the base body 29 in the projection according to Fig. 5 on the throat plate level 34, on both sides of the conveyor 17 edge over. 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 bis 9 zeigen eine weitere Ausführung eines Transporteurs 37, ausgebildet zum ausschließlichen Einsatz in einer Einnadel-Nähmaschine. Komponenten und Funktionen, die denjenigen entsprechen, die vorstehend unter Bezugnahme auf die Fig. 1 bis 6 erläutert wurden, tragen die gleichen Bezugsziffern und werden nicht noch einmal im Einzelnen erläutert. 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.

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 Fig. 8 rechts dargestellten Seite des Transporteurs 37 in Kontakt. Daher liegt das Randkontur-Übergangselement 35 auf dieser Seite vor, wobei das Randkontur-Übergangselement 35 für einen entsprechenden kantenfreien Übergang zwischen der Randkontur 32 des Transportabschnitts 28 und der Randkontur 33 des Grundkörpers 29 sorgt. Auch das Übergangselement 35 ist als Steg ausgebildet, der zwischen den Übergängen zum Transportabschnitt 28 einerseits und zum Grundkörper 29 andererseits eine sich linear ändernde Breite hat.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. Also, 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.

Claims (6)

Transporteur (17; 37) zum Transport von Nähgut (15) während des Betriebs einer Nähmaschine (1) - mit mindestens einem Transportabschnitt (28, 28a; 28), welcher zum reibschlüssigen Zusammenwirken mit dem Nähgut (15) und zum Ausführen einer Transportbewegung in einer Stichplatten-Ausnehmung (16) einer Stichplatte (14) ausgeführt ist, - mit einem Grundkörper (29), über den der Transportabschnitt (28, 28a; 28) fest mit einem Transporteur-Träger (29a) verbunden ist,
dadurch gekennzeichnet, dass - eine Randkontur (32) des Transportabschnitts (28, 28a; 28) in eine Randkontur (33) des Grundkörpers (29), gesehen bei montiertem Transporteur (17; 37) in einer Projektion auf eine Stichplattenebene (34), kantenfrei übergeht. Feed dog (17; 37) for transporting sewing material (15) during operation of a sewing machine (1) - having at least one transport section (28, 28a, 28), which is designed for frictional engagement with the fabric (15) and for carrying out a transport movement in a throat plate recess (16) of a throat plate (14), - With a base body (29) via which the transport section (28, 28 a, 28) is fixedly connected to a feed carrier (29 a),
characterized in that - An edge contour (32) of the transport section (28, 28 a, 28) in an edge contour (33) of the base body (29), as seen in mounted transporter (17, 37) in a projection on a throat plate level (34) passes without edges. Transporteur nach Anspruch 1, dadurch gekennzeichnet, dass ein Randkontur-Übergangselement (35) zwischen dem Transportabschnitt (28, 28a; 28) und dem Grundkörper (29) durch einen Steg gebildet ist, dessen Breite, gesehen bei montiertem Transporteur (17; 37) in einer Projektion auf eine Stichplattenebene (34), am Übergang zum Grundkörper (29) der Breite des Grundkörpers (29) und am Übergang zum Transportabschnitt (28, 28a; 28) der Breite des Transportabschnitts (28, 28a; 28) entspricht.A conveyor according to claim 1, characterized in that an edge contour transition element (35) between the transport section (28, 28a; 28) and the base body (29) is formed by a web whose width, seen at mounted transporter (17; 37) in a projection onto a throat plate plane (34), at the transition to the base body (29) the width of the base body (29) and at the transition to the transport section (28, 28a; 28) corresponds to the width of the transport section (28, 28a; Transporteur nach Anspruch 2, dadurch gekennzeichnet, dass das Übergangselement (35) zwischen den Übergängen eine sich linear ändernde Breite hat.A conveyor according to claim 2, characterized in that the transition element (35) has a linearly varying width between the transitions. Transporteur nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, dass der Steg (35) senkrecht zur Stichplattenebene (34) eine Stärke aufweist, die, jeweils am Übergang, geringer ist als die Stärke des Transportabschnitts (28, 28a; 28) und des Grundkörpers (29).Transporter according to one of claims 2 or 3, characterized in that the web (35) perpendicular to the throat plate plane (34) has a thickness which, at the transition, is less than the thickness of the transport section (28, 28a, 28) and Basic body (29). Transporteur nach einem der Ansprüche 1 bis 4, gekennzeichnet durch einen Transportabschnitt (28, 28a) mit zwei nebeneinander liegenden Transportabschnitt-Untereinheiten (28, 28a) zum Einsatz in einer Zwei-Nadel-Nähmaschine, wobei die Randkontur (32) des Transportabschnitts (28, 28a) in eine Randkontur (33) des Grundkörpers (29), gesehen bei montiertem Transporteur (37) in einer Projektion auf eine Stichplattenebene (34), auf beiden Seiten des Transporteurs (37) kantenfrei übergeht.Feed dog according to one of claims 1 to 4, characterized by a transport section (28, 28a) with two adjacent transport section subunits (28, 28a) for use in a two-needle sewing machine, wherein the edge contour (32) of the transport section (28 , 28a) in an edge contour (33) of the base body (29), as seen in mounted transporter (37) in a projection on a throat plate level (34) on both sides of the conveyor (37) passes over edges. Nähmaschine - mit einer Stichplatte (14) mit einer Stichplatten-Ausnehmung (16), - mit einer oberhalb der Stichplatte (14) auf und ab gehend angetriebenen Nadelstange (9) mit einer hieran anbringbaren Nähnadel (10), - mit einem zum Ausführen einer Transportbewegung in der Stichplatten-Ausnehmung (16) angeordneten Transporteur (17; 37) nach einem der Ansprüche 1 bis 5. sewing machine with a throat plate (14) with a throat plate recess (16), - with a above the needle plate (14) up and down driven needle bar (9) with an attachable thereto sewing needle (10), - With a for carrying out a transport movement in the throat plate recess (16) arranged transporter (17, 37) according to one of claims 1 to 5.
EP08013805.0A 2007-08-17 2008-08-01 Transporter for transporting sewing material while operating a sewing machine Active EP2025790B1 (en)

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 true EP2025790A2 (en) 2009-02-18
EP2025790A3 EP2025790A3 (en) 2011-10-19
EP2025790B1 EP2025790B1 (en) 2015-03-04

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ID=40122466

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EP08013805.0A Active EP2025790B1 (en) 2007-08-17 2008-08-01 Transporter for transporting sewing material while operating a sewing machine

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EP (1) EP2025790B1 (en)
JP (1) JP2009045460A (en)
KR (1) KR101424287B1 (en)
CN (1) CN101368319B (en)
DE (1) DE202007011553U1 (en)

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WO2022129332A1 (en) 2020-12-16 2022-06-23 Jt International Sa Heat not burn filament system

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Publication number Priority date Publication date Assignee Title
EP2405518B1 (en) 2009-03-04 2014-10-01 Lg Chem, Ltd. Electrolyte comprising an amide compound, and an electrochemical element comprising 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

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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
DE10002456A1 (en) 1999-01-21 2000-08-10 Juki Kk Sewing machine fabric advance system has fabric push units operated through a switch from the drive to give them a horizontal and vertical movement component to prevent fabric pulling between the seams

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US5979346A (en) * 1998-03-12 1999-11-09 Rodriguez; Rosty Automatic stitching apparatus
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

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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
DE10002456A1 (en) 1999-01-21 2000-08-10 Juki Kk Sewing machine fabric advance system has fabric push units operated through a switch from the drive to give them a horizontal and vertical movement component to prevent fabric pulling between the seams

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022129332A1 (en) 2020-12-16 2022-06-23 Jt International Sa Heat not burn filament system

Also Published As

Publication number Publication date
KR101424287B1 (en) 2014-07-31
DE202007011553U1 (en) 2008-12-24
CN101368319A (en) 2009-02-18
KR20090018583A (en) 2009-02-20
CN101368319B (en) 2013-06-05
JP2009045460A (en) 2009-03-05
EP2025790B1 (en) 2015-03-04
EP2025790A3 (en) 2011-10-19

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