EP2733246A1 - Sewing machine - Google Patents

Sewing machine Download PDF

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Publication number
EP2733246A1
EP2733246A1 EP13189715.9A EP13189715A EP2733246A1 EP 2733246 A1 EP2733246 A1 EP 2733246A1 EP 13189715 A EP13189715 A EP 13189715A EP 2733246 A1 EP2733246 A1 EP 2733246A1
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EP
European Patent Office
Prior art keywords
sewing machine
support plate
thread
upper thread
machine according
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
EP13189715.9A
Other languages
German (de)
French (fr)
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EP2733246B1 (en
Inventor
Christoph Heckner
Jakob Harder
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
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Publication date
Application filed by Duerkopp Adler AG filed Critical Duerkopp Adler AG
Publication of EP2733246A1 publication Critical patent/EP2733246A1/en
Application granted granted Critical
Publication of EP2733246B1 publication Critical patent/EP2733246B1/en
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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B47/00—Needle-thread tensioning devices; Applications of tensometers
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B73/00—Casings
    • D05B73/02—Upper casings

Definitions

  • the invention relates to a sewing machine with a support plate which carries components of a needle thread tensioning device.
  • Such a sewing machine is known from the DE 10 2011 005 198 A1 and the DE 10 2007 039 596 A1 .
  • the DE 103 12 602 A1 discloses a sewing machine with a support plate, which also carries components of a needle thread tensioning device in addition to operating components.
  • Other sewing machines are known from the DE 103 44 982 A1 and the DE 10 2009 047 534 A1 ,
  • the one-piece support plate according to the invention can be prefabricated and preassembled together with the sewing machine components carried thereby, which helps to reduce both manufacturing and assembly costs.
  • the support plate can then for example also be equipped differently.
  • Such a support plate can be carried out in one piece in accordance with different models of sewing machines in the same way, so in particular represent a platform for the various sewing machine models, which is then equipped differently. This reduces the manufacturing costs.
  • the position setting device according to claim 7 can be designed as an electronic handwheel.
  • the lighting device according to claim 8 may be an apron lighting.
  • a connector according to claim 12 in turn facilitates mounting of the support plate.
  • the supply lines can be electrical supply lines and / or signal lines and / or pneumatic lines.
  • a sewing machine 1 has an upper arm 2, a vertical stand 3 and a lower housing, which is commonly referred to as a base plate 4.
  • the sewing machine 1 is designed for sewing heavy or durable material, eg. As leather or plastic plates.
  • the components 2 to 4, which form a housing of the sewing machine, are in the Fig. 1 only as far as their contours are concerned.
  • an arm shaft 5 is rotatable on a schematically in the Fig. 1 indicated frame 5a stored.
  • One of these arm shaft bearings is arranged in the region of a stator-side arm shaft end and another of the arm shaft bearings in the region of an opposite arm shaft end in a head 6 of the sewing machine 1.
  • About the arm shaft 5 and a crank mechanism 8 is a vertically mounted in the head 6 needle bar 9 vertically up and down driven, which carries a needle 10 at its lower end.
  • a barell gripper 11 is reciprocated in the base plate 4 about a gripper pivot axis 12 of a gripper rocker shaft 13 to and fro.
  • the Barell gripper 11 is also referred to as a Barell shuttle.
  • the gripper pivot axis 12 extends horizontally and parallel to the arm shaft 5.
  • the Barell gripper 11 cooperates with the sewing needle 10 for stitch and seam formation in the fabric.
  • the barell gripper 11 and the sewing needle 10 represent stitching tools of the sewing machine 1. Instead of a barell gripper, another type of gripper can also be used.
  • the oscillating drive of the barell gripper 11 takes place via a gripper drive 14.
  • the gripper drive 14 has a drive unit 15 for generating a transmission oscillation movement about a transmission oscillation axis 17.
  • the transmission oscillating axis 17 runs parallel to the shafts 5 and 13.
  • the drive unit 15 has a connecting rod 18.
  • a rod end of the connecting rod 18 is designed as a rod eye 19, which is in driving connection with the drive shaft 5 via an eccentric unit.
  • the other rod end of the connecting rod 18 is also formed as a rod eye and communicates with a transmission wheel 22 via an axial / radial bearing 23 in transmission connection.
  • the transmission wheel 22 is pivotally mounted about the transmission oscillating axis 17 on a bearing bush 23a.
  • crank rod 18 is in transmission communication with the transmission wheel 22 for swinging it back and forth about the transmission vibration axis 17.
  • a traction means 25 of a traction mechanism 26 of the gripper drive 14 is guided.
  • the traction means 25 is designed as a toothed belt. This meshes with an outer toothing on the outer circumference of the Transmissionsrades 22nd
  • the traction mechanism 26 is used to transmit the transmission oscillatory movement of the transmission wheel 22 about the transmission oscillation axis 17 in a drive-oscillating movement of the gripper rocker shaft thirteenth
  • the gripper body of the barell gripper 11 moves synchronously with the needle 10 and takes a needle thread loop which is passed through the fabric with the needle 10 and knots this by the upper thread during the movement of the gripper body to a Gripper housing is guided around and knotted.
  • the support plate 27 For supporting components of the sewing machine 1 is a fixed in the region of the head 6 on the housing, one-piece support plate 27.
  • the support plate 27 carries, inter alia, components for guiding an upper thread 28 (see Fig. 5 ).
  • these are an upper thread guide eye 29, two upper thread tensioning devices 30, 31, a Fadenanzugsfeder 32, another upper thread guide eye 33 in the upper thread path in front of a thread lever 34, another upper thread guide eye 35 in the upper thread path after the thread lever 34th , an upper thread clamp 36 and two more upper thread guide eyelets 37, 38 in the upper thread path after the upper thread clamp 36th
  • the support plate 27 carries components of the upper thread tensioning devices 30, 31, namely actuators for opening and closing of clamping components the clamping devices 30, 31, wherein these actuators may be designed as a pneumatic cylinder.
  • the voltage components can be tension discs.
  • the tension discs are in the Fig. 3 shown at 38a.
  • the support plate 27 further contributes to the mechanical release of the clamping devices 30, 31 a pivoting plate which can be pivoted between the tension discs 38 a.
  • the Fig. 2 facing away from the support plate 27 has cable guides that can be designed as cable ducts in which both cable and pneumatic lines of the sewing machine 1 can be mounted.
  • the support plate 27 may be connected via a plug connection with a corresponding counter-body on the housing of the sewing machine 1. Towards the plug connection of the support plate 27, all the supply lines required for the operation of the components carried by the support plate 27 can then be guided. A counter-plug connection on the housing then ensures the connection of the components carried by the support plate 27 via the supply line connections connected thereto.
  • the thread lever 34 guides the upper thread 28.
  • the thread lever 34 is synchronized with the stitch forming tools 10, 11 displaceable between a top dead center and a bottom dead center displaced.
  • the position "thread lever top dead center” is in the Fig. 6 shown.
  • the support plate 27 carries a thread lever protection body 39, which is an integral part of the support plate 27.
  • the Fig. 2 and 5 show two versions of the thread lever protection body 39.
  • the thread lever protective body 39 In the execution according to Fig. 5 is the thread lever protective body 39 exclusively formed as extending perpendicular to the housing shell projection plate whose outer contour is adapted to a path of movement of the thread lever 34.
  • the thread lever protection body 39 In the execution after Fig. 2 the thread lever protection body 39 additionally has a front cover 40 which covers the path of movement of the thread lever 34 on the front side, ie towards the operator.
  • the thread lever protection body 39 may have a threading groove for facilitating threading of the upper thread 28 in the region of the thread lever 34.
  • the support plate 27 carries sewing machine controls on the one hand in the form of a multi-button control panel 41 with a total of six control buttons 42 and on the other hand in the form of a control button 43, the function can be pre-assigned.
  • the support plate 27 carries a winding device 44 for winding a yarn package.
  • the support plate 27 carries a position setting device 45 in the form of a setting wheel for setting the position of a relative position of the stitch forming tools 10, 11, that is, for preselecting a rotational position of the arm shaft fifth
  • the support plate 27 carries a lighting device 46, which in the Fig. 2 is shown schematically.
  • the illumination device 46 serves to illuminate a section of a sewing field. This may be a sewing apron which represents a sewing field area in front of a puncture area of the needle 10 into a sewing material.
  • the support plate 27 carries a thread path presetting device 47 for influencing a length of upper thread path between the upper thread guide eye 33 as upstream in the upper thread path upstream of the thread lever 34 upper thread guide component and the thread lever 34 itself.
  • the thread path preselection device 47 will be described in more detail below.
  • the thread path presetting device 47 ensures that, for a given material thickness of the sewing material in the loop formation, the upper thread 28 runs with the correct tension over the gripper.
  • the support plate 27 carries all the yarn guide components of the sewing machine 1 from the upstream in the upper thread path abtrag researchen upper thread tensioning device 30, 31 to the thread lever 34. Furthermore, the support plate 27 carries all yarn guide components of the sewing machine 1 in the upper thread path from the thread lever 34 to the sewing needle 10th
  • the upper thread path of the upper thread 28 between the upper thread guide eye 29 and the upper thread guide eye 38 is indicated by way marks 47a on the support plate 27. These way marks 47a are designed by raised or recessed executed in the support plate 27 markings. The way marks 47a facilitate threading of the upper thread 28 along the upper thread path.
  • the thread path presetting means 47 has a protrusion member arranged such that the upper thread 28 is formed between the upper thread guide eye 33, which is an upstream upper thread guiding component in the upper thread path in front of the thread lever 34, and the thread lever 34 is made of a main upper thread guiding plane runs out.
  • This main upper thread guide plane is defined by the upper thread guide loop 33, by the thread lever 34 and by the upper thread guide eye 35 as a downstream upper thread guide component in the upper thread path after the thread lever 34.
  • the main upper thread guide plane extends approximately parallel to the plane of the Fig. 2 ,
  • the projection element of the thread path presetting device 47 is designed as a bracket 48.
  • This bracket extends transversely to the upper thread run between the upper thread guide eye 33 and the thread lever 34.
  • the supernatant member 48 also, comparable to the thread lever protection body 39 in the embodiment according to Fig. 5 , be formed as a bridge body.
  • the bracket 48 has a convex strap portion 49 that defines a region of large overhang of the protrusion member 48 over the main needle thread guide plane.
  • the convex bracket portion 49 is executed in the illustrated embodiment as a rounded kink portion of the bracket 48.
  • Both ends 50, 51 of the bracket 48 are fixed to the housing of the sewing machine, namely on the support plate 27.
  • a mounted in the upper position 50 of the bracket 48 is about a pivot axis 52 (see Fig. 2 ), which extends parallel to the arm 2, mounted in a pivot-fixing bearing 53 of the support plate 27.
  • In the region of this end 50 of the bracket 48 is bent by 90 ° with respect to its other main extension parallel to a face plate portion 54 of the head 6.
  • the bracket 48 is adjustably mounted on the housing of the sewing machine, namely on the support plate 27.
  • the bracket 48 is again at 90 ° bent, with an end bracket section up to the strap end 51 perpendicular to the plane of the Fig. 2 extends.
  • the adjustability is vivid in the Fig. 3 and 4 shown in two different relative positions of the end 51 of the bracket 48.
  • the bracket 48 has at the adjustable end 51 in the illustrated embodiment a total of four locking marks, which are designed as mounted in the adjustable strap end 51 locking grooves 55, 56, 57 and 58.
  • the locking grooves 55 to 58 cooperate with a counter body in the form of a spring 59 of the support plate 27 for specifying the respective relative position of the adjustable strap end 51 to the housing.
  • Fig. 3 shows the position in which the counter body 59 cooperates with the farthest from the adjustable strap end 51 arranged locking groove 58.
  • Fig. 4 shows the relative position of the adjustable strap end 51 to the support plate 27, in which the counter body 59 with the bracket end 51 next adjacent locking groove 55 cooperates.
  • this relative position of the bracket 48 and in particular the convex bracket portion 49 has the largest projection to the support plate 27 and thus also to the main upper thread guide level.
  • the counter body 59 with the intermediate locking grooves 56 or 57 can be correspondingly projections of the convex ironing section 49 on the main upper thread guide plane produce, between the maximum supernatant to Fig. 4 and the minimum supernatant Fig. 3 lie.
  • the supernatant position of the bracket 48 is set on the adjustable strap end 51.
  • a large threadless plays a role especially in thick sewing material to be sewn.
  • the Fig. 5 to 9 illustrate the function of the thread path presetting device 47.
  • Fig. 5 shows an arm shaft position "0 °" at which the needle 10 is at top dead center of its travel.
  • the thread lever 34 is in the Armwellenposition after Fig. 5 On the way up.
  • Fig. 6 shows the Armwellenposition "60 °" with the thread lever 34 at top dead center.
  • the upper thread 28 is stretched between the Fadenanzugsfeder 32 and the thread lever 34, in particular between the upper thread guide eye 33 and the thread lever 34, and is located on the bracket 48 in a region between the convex bracket portion 49 and the pivotable end 50 at.
  • Fig. 7 shows the Armwellenposition "160 °", in which the thread lever 34 is from top dead center on the way down. Accordingly, the upper thread 28 in the thread path between the upper thread guide eye 33 and the thread lever 34 is no longer tensioned, but loose. This is also called “threadless”.
  • the thread path presetting device 47 ensures that the loose upper thread 28 between the upper thread guide eye 33 and the thread lever 34 has a defined course.
  • the upper thread 28 is on the bracket 48 in turn between the convex bracket portion 49 and the pivotable end 50 at.
  • Fig. 8 shows the Armwellenposition "220 °", in which the thread lever 34 is on its further way down and is approximately at the level of the convex ironing portion 49.
  • the upper thread 28, which is now even more loose than the Armwellenposition after Fig. 7 abuts on the bracket 48 in the region of the convex bracket portion 49.
  • the shape of the bracket 48 forces here a defined course of the upper thread 28 between the upper thread guide eye 33 and the thread lever 34. It is in the arm shaft positions between the positions of the Fig. 7 and 8th in particular prevents an uncontrollably large upper thread loop forms.
  • Fig. 9 shows the Armwellenposition "270 °", in which the thread lever 34 is in the region of its bottom dead center.
  • the upper thread 28 is now on the bracket 48 in the area between the convex bracket portion 49 and the adjustable strap end 51 at.
  • Another supernatant element on the type of supernatant element which has been described above in connection with the thread path presetting device 47 can be arranged in the upper thread path after the thread lever 34.
  • the two supernatant elements so for example, the bracket 48 and another supernatant element, which may also be designed in the form of a bracket or a solid or hollow body, be disposed on both sides of the thread lever 34 and adjacent thereto.

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

Abstract

The machine has a needle formation tool that is provided with a needle bar which holds a needle. An integrated support plate is fixed to the housing and is provided to support the components of sewing machine. The support plate is provided to support the needle-thread-eyelet components in the needle-thread path from the thread lever to the needle. The support plate is provided to support the needle thread tension apparatus.

Description

Die Erfindung betrifft eine Nähmaschine mit einer Tragplatte, die Komponenten einer Oberfaden-Spanneinrichtung trägt.The invention relates to a sewing machine with a support plate which carries components of a needle thread tensioning device.

Eine derartige Nähmaschine ist bekannt aus der DE 10 2011 005 198 A1 und der DE 10 2007 039 596 A1 . Die DE 103 12 602 A1 offenbart eine Nähmaschine mit einer Tragplatte, die neben Bedienungskomponenten auch Komponenten einer Oberfaden-Spanneinrichtung trägt. Weitere Nähmaschinen sind bekannt aus der DE 103 44 982 A1 und der DE 10 2009 047 534 A1 .Such a sewing machine is known from the DE 10 2011 005 198 A1 and the DE 10 2007 039 596 A1 , The DE 103 12 602 A1 discloses a sewing machine with a support plate, which also carries components of a needle thread tensioning device in addition to operating components. Other sewing machines are known from the DE 103 44 982 A1 and the DE 10 2009 047 534 A1 ,

Es ist eine Aufgabe der vorliegenden Erfindung, eine Fertigung sowie eine Montage der Nähmaschine zur vereinfachen.It is an object of the present invention to simplify manufacture and assembly of the sewing machine.

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 claim 1.

Die erfindungsgemäße, einstückige Tragplatte kann mitsamt den hiervon getragenen Nähmaschinenkomponenten vorgefertigt und vormontiert werden, was sowohl einen Fertigungs- als auch einen Montageaufwand verringern hilft. Je nach Ausstattung der Nähmaschine kann die Tragplatte dann beispielsweise auch unterschiedlich bestückt werden. Eine derartige Tragplatte kann entsprechend für verschiedene Nähmaschinenmodelle in gleicher Weise einstückig ausgeführt sein, also insbesondere ein Plattform für die verschiedenen Nähmaschinenmodelle darstellen, die dann unterschiedlich bestückt wird. Dies reduziert die Fertigungskosten.The one-piece support plate according to the invention can be prefabricated and preassembled together with the sewing machine components carried thereby, which helps to reduce both manufacturing and assembly costs. Depending on the equipment of the sewing machine, the support plate can then for example also be equipped differently. Such a support plate can be carried out in one piece in accordance with different models of sewing machines in the same way, so in particular represent a platform for the various sewing machine models, which is then equipped differently. This reduces the manufacturing costs.

Ausführungen der Tragplatte nach den Ansprüchen 2 bis 11 haben sich als besonders vorteilhaft herausgestellt. Es resultiert je nach Ausführung ein entsprechend mehrere Funktionen in sich vereinigendes Tragplatten-Modul. Die Positionsvorgabeeinrichtung nach Anspruch 7 kann als elektronisches Handrad ausgeführt sein. Bei der Beleuchtungseinrichtung nach Anspruch 8 kann es sich um eine Vorfeld-Beleuchtung handeln. Eine Steckverbindung nach Anspruch 12 erleichtert wiederum eine Montage der Tragplatte. Bei den Versorgungsleitungen kann es sich um elektrische Versorgungsleitungen und/oder um Signalleitungen und/oder um Pneumatikleitungen handeln.Designs of the support plate according to claims 2 to 11 have been found to be particularly advantageous. Depending on the design, a correspondingly a number of functions result in a combined support plate module. The position setting device according to claim 7 can be designed as an electronic handwheel. The lighting device according to claim 8 may be an apron lighting. A connector according to claim 12 in turn facilitates mounting of the support plate. The supply lines can be electrical supply lines and / or signal lines and / or pneumatic lines.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung näher erläutert. In dieser zeigen:

Fig. 1
perspektivisch eine bedienerseitige Ansicht einer Nähmaschine zum Vernähen von schwerem bzw. widerstandsfähigem Nähgut, wobei auch teilweise innenliegende Details einer Maschinenmechanik wiedergegeben sind;
Fig. 2
einen Ausschnitt einer Seitenansicht der Nähmaschine nach Fig. 1 im Bereich eines Nähmaschinenkopfes am Ende eines Arms der Nähmaschine;
Fig. 3
einen unterbrochenen Schnitt gemäß Linie III-III in Fig. 2;
Fig. 4
in einer zu Fig. 3 ähnlichen Darstellung eine Fadenweg-Vorgabeeinrichtung der Nähmaschine in Form eines Draht-Bügels im Vergleich zur Stellung nach Fig. 3 in einer anderen Relativposition eines Bügelendes zu einem Gehäuse der Nähmaschine; und
Fig. 5 bis 9
eine perspektivische Ansicht des Nähmaschinenkopfes in verschiedenen Armwellenposition zur Verdeutlichtung einer Funktion der Fadenweg-Vorgabeeinrichtung.
An embodiment of the invention will be explained in more detail with reference to the drawing. In this show:
Fig. 1
in perspective, a user-side view of a sewing machine for sewing heavy or durable fabric, which also partially internal details of a machine mechanism are shown;
Fig. 2
a section of a side view of the sewing machine after Fig. 1 in the area of a sewing machine head at the end of an arm of the sewing machine;
Fig. 3
a broken section along line III-III in Fig. 2 ;
Fig. 4
in one too Fig. 3 similar representation of a thread path-setting device of the sewing machine in the form of a wire strap in comparison to the position after Fig. 3 in another Relative position of a strap end to a housing of the sewing machine; and
Fig. 5 to 9
a perspective view of the sewing machine head in different Armwellenposition to illustrate a function of the thread path setting device.

Eine Nähmaschine 1 hat einen oberen Arm 2, einen vertikalen Ständer 3 und ein unteres Gehäuse, das üblicherweise als Grundplatte 4 bezeichnet ist. Die Nähmaschine 1 ist ausgelegt zum Vernähen von schwerem bzw. widerstandsfähigem Nähgut, z. B. von Leder oder von Kunststoffplatten. Die Komponenten 2 bis 4, die ein Gehäuse der Nähmaschine bilden, sind in der Fig. 1 lediglich, was ihre Konturen angeht, angedeutet.A sewing machine 1 has an upper arm 2, a vertical stand 3 and a lower housing, which is commonly referred to as a base plate 4. The sewing machine 1 is designed for sewing heavy or durable material, eg. As leather or plastic plates. The components 2 to 4, which form a housing of the sewing machine, are in the Fig. 1 only as far as their contours are concerned.

Im Arm 2 ist eine Armwelle 5 drehbar an einem schematisch in der Fig. 1 angedeuteten Rahmen 5a gelagert. Eines dieser Armwellenlager ist im Bereich eines ständerseitigen Armwellenendes und ein anderes der Armwellenlager im Bereich eines gegenüberliegenden Armwellenendes in einem Kopf 6 der Nähmaschine 1 angeordnet. Der Antrieb der Armwelle 5 und damit auch der wesentlichen Nähkomponenten der Nähmaschine 1 erfolgt über einen schematisch in der Fig. 1 angedeuteten Hochleistungsmotor 7. Über die Armwelle 5 und einen Kurbeltrieb 8 ist eine im Kopf 6 vertikal gelagerte Nadelstange 9 vertikal auf- und abgehend antreibbar, die an ihrem unteren Ende eine Nadel 10 trägt.In the arm 2, an arm shaft 5 is rotatable on a schematically in the Fig. 1 indicated frame 5a stored. One of these arm shaft bearings is arranged in the region of a stator-side arm shaft end and another of the arm shaft bearings in the region of an opposite arm shaft end in a head 6 of the sewing machine 1. The drive of the arm shaft 5 and thus also the essential sewing components of the sewing machine 1 via a schematic in the Fig. 1 indicated high-power motor 7. About the arm shaft 5 and a crank mechanism 8 is a vertically mounted in the head 6 needle bar 9 vertically up and down driven, which carries a needle 10 at its lower end.

Unterhalb der Nadelstange 9 ist in der Grundplatte 4 ein Barell-Greifer 11 um eine Greifer-Schwingachse 12 einer Greifer-Schwingwelle 13 hin- und her schwingend angetrieben. Der Barell-Greifer 11 wird auch als Barell-Schiffchen bezeichnet. Die Greifer-Schwingachse 12 verläuft horizontal und parallel zur Armwelle 5. Der Barell-Greifer 11 wirkt mit der Nähnadel 10 zur Stich- und Nahtbildung im Nähgut zusammen. Der Barell-Greifer 11 und die Nähnadel 10 stellen Stichbildungswerkzeuge der Nähmaschine 1 dar. Anstelle eines Barell-Greifers kann auch ein anderer Greifertyp zum Einsatz kommen.Below the needle bar 9, a barell gripper 11 is reciprocated in the base plate 4 about a gripper pivot axis 12 of a gripper rocker shaft 13 to and fro. The Barell gripper 11 is also referred to as a Barell shuttle. The gripper pivot axis 12 extends horizontally and parallel to the arm shaft 5. The Barell gripper 11 cooperates with the sewing needle 10 for stitch and seam formation in the fabric. The barell gripper 11 and the sewing needle 10 represent stitching tools of the sewing machine 1. Instead of a barell gripper, another type of gripper can also be used.

Der Schwingantrieb des Barell-Greifers 11 erfolgt über einen Greiferantrieb 14. Der Greiferantrieb 14 hat eine Antriebseinheit 15 zur Erzeugung einer Transmissions-Schwingbewegung um eine Transmissions-Schwingachse 17.The oscillating drive of the barell gripper 11 takes place via a gripper drive 14. The gripper drive 14 has a drive unit 15 for generating a transmission oscillation movement about a transmission oscillation axis 17.

Die Transmissions-Schwingachse 17 verläuft parallel zu den Wellen 5 und 13.The transmission oscillating axis 17 runs parallel to the shafts 5 and 13.

Als umlaufende Antriebswelle der Antriebseinheit 15 dient die Armwelle 5. Weiterhin hat die Antriebseinheit 15 eine Kurbelstange 18. Ein Stangenende der Kurbelstange 18 ist als Stangenauge 19 ausgebildet, welches über eine Exzentereinheit mit der Antriebswelle 5 in Antriebsverbindung steht. Das andere Stangenende der Kurbelstange 18 ist ebenfalls als Stangenauge ausgebildet und steht mit einem Transmissionsrad 22 über ein Axial-/Radiallager 23 in Transmissionsverbindung. Das Transmissionsrad 22 ist schwenkbar um die Transmissions-Schwingachse 17 an einer Lagerbuchse 23a gelagert.Furthermore, the drive unit 15 has a connecting rod 18. A rod end of the connecting rod 18 is designed as a rod eye 19, which is in driving connection with the drive shaft 5 via an eccentric unit. The other rod end of the connecting rod 18 is also formed as a rod eye and communicates with a transmission wheel 22 via an axial / radial bearing 23 in transmission connection. The transmission wheel 22 is pivotally mounted about the transmission oscillating axis 17 on a bearing bush 23a.

Die Kurbelstange 18 steht mit dem Transmissionsrad 22 zum Hin- und Herschwenken von diesem um die Transmissions-Schwingachse 17 in Transmissionsverbindung.The crank rod 18 is in transmission communication with the transmission wheel 22 for swinging it back and forth about the transmission vibration axis 17.

Über einen Außenumfang des Transmissionsrades 22 ist ein Zugmittel 25 eines Zugmittelgetriebes 26 des Greiferantriebs 14 geführt. Das Zugmittel 25 ist als Zahnriemen ausgeführt. Dieser kämmt mit einer Außenverzahnung am Außenumfang des Transmissionsrades 22.Over an outer circumference of the transmission wheel 22, a traction means 25 of a traction mechanism 26 of the gripper drive 14 is guided. The traction means 25 is designed as a toothed belt. This meshes with an outer toothing on the outer circumference of the Transmissionsrades 22nd

Das Zugmittelgetriebe 26 dient zur Übertragung der Transmissions-Schwingbewegung des Transmissionsrades 22 um die Transmissions-Schwingachse 17 in eine Antriebs-Schwingbewegung der Greifer-Schwingwelle 13.The traction mechanism 26 is used to transmit the transmission oscillatory movement of the transmission wheel 22 about the transmission oscillation axis 17 in a drive-oscillating movement of the gripper rocker shaft thirteenth

Zur Stich- und Nahtbildung bewegt sich der Greiferkörper des Barell-Greifers 11 synchron mit der Nadel 10 und ergreift eine Oberfaden-Schlinge, die mit der Nadel 10 durch das Nähgut hindurchgeführt wird und verknotet diese, indem der Oberfaden während der Bewegung des Greiferkörpers um ein Greifergehäuse herumgeführt und verknotet wird.For stitch and seam formation, the gripper body of the barell gripper 11 moves synchronously with the needle 10 and takes a needle thread loop which is passed through the fabric with the needle 10 and knots this by the upper thread during the movement of the gripper body to a Gripper housing is guided around and knotted.

Zum Tragen von Komponenten der Nähmaschine 1 dient eine im Bereich des Kopfes 6 am Gehäuse festgelegte, einstückige Tragplatte 27. Die Tragplatte 27 trägt unter anderem Komponenten zur Führung eines Oberfadens 28 (vergleiche Fig. 5). Im Weg des Oberfadens 28 sind dies eine Oberfaden-Führungsöse 29, zwei Oberfaden-Spanneinrichtungen 30, 31, eine Fadenanzugsfeder 32, eine weitere Oberfaden-Führungsöse 33 im Oberfadenweg vor einem Fadenhebel 34, eine weitere Oberfaden-Führungsöse 35 im Oberfadenweg nach dem Fadenhebel 34, eine Oberfadenklemme 36 und zwei weitere Oberfaden-Führungsösen 37, 38 im Oberfadenweg nach der Oberfadenklemme 36.For supporting components of the sewing machine 1 is a fixed in the region of the head 6 on the housing, one-piece support plate 27. The support plate 27 carries, inter alia, components for guiding an upper thread 28 (see Fig. 5 ). In the way of the upper thread 28, these are an upper thread guide eye 29, two upper thread tensioning devices 30, 31, a Fadenanzugsfeder 32, another upper thread guide eye 33 in the upper thread path in front of a thread lever 34, another upper thread guide eye 35 in the upper thread path after the thread lever 34th , an upper thread clamp 36 and two more upper thread guide eyelets 37, 38 in the upper thread path after the upper thread clamp 36th

Die Tragplatte 27 trägt Komponenten der Oberfaden-Spanneinrichtungen 30, 31, nämlich Stellglieder zum Öffnen und Schließen von Spannkomponenten der Spanneinrichtungen 30, 31, wobei diese Stellglieder als Pneumatikzylinder ausgeführt sein können. Bei den Spannungskomponenten kann es sich um Spannungsscheiben handeln. Die Spannungsscheiben sind in der Fig. 3 bei 38a dargestellt. Die Tragplatte 27 trägt weiterhin zur mechanischen Auslösung der Spanneinrichtungen 30, 31 ein schwenkbares Blech, das zwischen die Spannungsscheiben 38a geschwenkt werden kann.The support plate 27 carries components of the upper thread tensioning devices 30, 31, namely actuators for opening and closing of clamping components the clamping devices 30, 31, wherein these actuators may be designed as a pneumatic cylinder. The voltage components can be tension discs. The tension discs are in the Fig. 3 shown at 38a. The support plate 27 further contributes to the mechanical release of the clamping devices 30, 31 a pivoting plate which can be pivoted between the tension discs 38 a.

Auf einer vom Betrachter zum Beispiel der Fig. 2 abgewandten Seite hat die Tragplatte 27 Kabelführungen, die als Kabelkanäle ausgeführt sein können, in denen sowohl Kabel als auch Pneumatikleitungen der Nähmaschine 1 montiert sein können.On one of the viewer for example the Fig. 2 facing away from the support plate 27 has cable guides that can be designed as cable ducts in which both cable and pneumatic lines of the sewing machine 1 can be mounted.

Die Tragplatte 27 kann über eine Steckverbindung mit einem entsprechenden Gegenkörper am Gehäuse der Nähmaschine 1 verbunden sein. Hin zur Steckverbindung der Tragplatte 27 können dann alle zum Betrieb der von der Tragplatte 27 getragenen Komponenten erforderlichen Versorgungsleitungen geführt sein. Eine Gegen-Steckverbindung am Gehäuse stellt über sich hieran anschließende Versorgungs-Leitungsverbindungen dann den Anschluss der von der Tragplatte 27 getragenen Komponenten sicher.The support plate 27 may be connected via a plug connection with a corresponding counter-body on the housing of the sewing machine 1. Towards the plug connection of the support plate 27, all the supply lines required for the operation of the components carried by the support plate 27 can then be guided. A counter-plug connection on the housing then ensures the connection of the components carried by the support plate 27 via the supply line connections connected thereto.

Der Fadenhebel 34 führt den Oberfaden 28. Der Fadenhebel 34 ist synchronisiert zu den Stichbildungswerkzeugen 10, 11 angetrieben zwischen einem oberen Totpunkt und einem unteren Totpunkt verlagerbar. Die Position "Fadenhebel oberer Totpunkt" ist in der Fig. 6 dargestellt.The thread lever 34 guides the upper thread 28. The thread lever 34 is synchronized with the stitch forming tools 10, 11 displaceable between a top dead center and a bottom dead center displaced. The position "thread lever top dead center" is in the Fig. 6 shown.

Neben diesen Komponenten trägt die Tragplatte 27 einen Fadenhebel-Schutzkörper 39, der einen integrierten Bestandteil der Tragplatte 27 darstellt. Die Fig. 2 und 5 zeigen zwei Ausführungen des Fadenhebel-Schutzkörpers 39. Bei der Ausführung nach Fig. 5 ist der Fadenhebel-Schutzkörper 39 ausschließlich als sich senkrecht zum Gehäusemantel erstreckende Überstandsplatte ausgebildet, deren Außenkontur an einen Bewegungsweg des Fadenhebels 34 angepasst ist. Bei der Ausführung nach Fig. 2 hat der Fadenhebel-Schutzkörper 39 zusätzlich noch eine Frontabdeckung 40, die den Bewegungsweg des Fadenhebels 34 stirnseitig, also zur Bedienperson hin, abdeckt.In addition to these components, the support plate 27 carries a thread lever protection body 39, which is an integral part of the support plate 27. The Fig. 2 and 5 show two versions of the thread lever protection body 39. In the execution according to Fig. 5 is the thread lever protective body 39 exclusively formed as extending perpendicular to the housing shell projection plate whose outer contour is adapted to a path of movement of the thread lever 34. In the execution after Fig. 2 the thread lever protection body 39 additionally has a front cover 40 which covers the path of movement of the thread lever 34 on the front side, ie towards the operator.

Der Fadenhebel-Schutzkörper 39 kann eine Einfädelnut zur Erleichterung eines Einfädelns des Oberfadens 28 im Bereich des Fadenhebels 34 aufweisen.The thread lever protection body 39 may have a threading groove for facilitating threading of the upper thread 28 in the region of the thread lever 34.

Weiterhin trägt die Tragplatte 27 Nähmaschinen-Bedienelemente einerseits in Form eines Mehrtasten-Bedienfeldes 41 mit insgesamt sechs Bedientasten 42 und andererseits in Form eines Bedientasters 43, dessen Funktion vorbelegt werden kann.Furthermore, the support plate 27 carries sewing machine controls on the one hand in the form of a multi-button control panel 41 with a total of six control buttons 42 and on the other hand in the form of a control button 43, the function can be pre-assigned.

Weiterhin trägt die Tragplatte 27 eine Spuleinrichtung 44 zum Aufspulen einer Garnspule.Furthermore, the support plate 27 carries a winding device 44 for winding a yarn package.

Weiterhin trägt die Tragplatte 27 eine Positionsvorgabeeinrichtung 45 in Form eines Stellrades zur Positionsvorgabe einer Relativposition der Stichbildungswerkzeuge 10, 11, also zur Vorwahl einer Drehposition der Armwelle 5.Furthermore, the support plate 27 carries a position setting device 45 in the form of a setting wheel for setting the position of a relative position of the stitch forming tools 10, 11, that is, for preselecting a rotational position of the arm shaft fifth

Weiterhin trägt die Tragplatte 27 eine Beleuchtungseinrichtung 46, die in der Fig. 2 schematisch dargestellt ist. Die Beleuchtungseinrichtung 46 dient zur Beleuchtung eines Abschnitts eines Nähfeldes. Hierbei kann es sich um ein Näh-Vorfeld handeln, welches einen Nähfeldbereich vor einem Einstichbereich der Nadel 10 in ein Nähgut darstellt.Furthermore, the support plate 27 carries a lighting device 46, which in the Fig. 2 is shown schematically. The illumination device 46 serves to illuminate a section of a sewing field. This may be a sewing apron which represents a sewing field area in front of a puncture area of the needle 10 into a sewing material.

Schließlich trägt die Tragplatte 27 eine Fadenweg-Vorgabeeinrichtung 47 zur Beeinflussung einer Länge eines Oberfadenweges zwischen der Oberfaden-Führungsöse 33 als im Oberfadenweg vor dem Fadenhebel 34 vorgelagerten Oberfaden-Führungskomponente und dem Fadenhebel 34 selbst. Die Fadenweg-Vorgabeeinrichtung 47 wird nachfolgend noch näher beschrieben. Die Fadenweg-Vorgabeeinrichtung 47 stellt sicher, dass bei einer gegebenen Materialstärke des Nähguts bei der Schlingenbildung der Oberfaden 28 mit korrekter Spannung über den Greifer läuft.Finally, the support plate 27 carries a thread path presetting device 47 for influencing a length of upper thread path between the upper thread guide eye 33 as upstream in the upper thread path upstream of the thread lever 34 upper thread guide component and the thread lever 34 itself. The thread path preselection device 47 will be described in more detail below. The thread path presetting device 47 ensures that, for a given material thickness of the sewing material in the loop formation, the upper thread 28 runs with the correct tension over the gripper.

Die Tragplatte 27 trägt alle Fadenführungskomponenten der Nähmaschine 1 von der im Oberfadenweg vorgelagerten tragplattenseitigen Oberfaden-Spanneinrichtung 30, 31 bis zum Fadenhebel 34. Weiterhin trägt die Tragplatte 27 alle Fadenführungskomponenten der Nähmaschine 1 im Oberfadenweg vom Fadenhebel 34 bis zur Nähnadel 10.The support plate 27 carries all the yarn guide components of the sewing machine 1 from the upstream in the upper thread path abtragseitigen upper thread tensioning device 30, 31 to the thread lever 34. Furthermore, the support plate 27 carries all yarn guide components of the sewing machine 1 in the upper thread path from the thread lever 34 to the sewing needle 10th

Der Oberfadenweg des Oberfadens 28 zwischen der Oberfaden-Führungsöse 29 und der Oberfaden-Führungsöse 38 ist durch Wegmarken 47a auf der Tragplatte 27 vorgezeichnet. Diese Wegmarken 47a sind durch erhaben oder vertieft in der Tragplatte 27 ausgeführte Markierungen gestaltet. Die Wegmarken 47a erleichtern ein Einfädeln des Oberfadens 28 längs des Oberfadenweges.The upper thread path of the upper thread 28 between the upper thread guide eye 29 and the upper thread guide eye 38 is indicated by way marks 47a on the support plate 27. These way marks 47a are designed by raised or recessed executed in the support plate 27 markings. The way marks 47a facilitate threading of the upper thread 28 along the upper thread path.

Die Fadenweg-Vorgabeeinrichtung 47 hat ein Überstandselement, dass so angeordnet ist, dass der Oberfaden 28 zwischen der Oberfaden-Führungsöse 33, die eine vorgelagerte Oberfaden-Führungskomponente im Oberfadenweg vor dem Fadenhebel 34 darstellt, und dem Fadenhebel 34 aus einer Haupt-Oberfaden-Führungsebene herausläuft. Diese Haupt-Oberfaden-Führungsebene ist definiert durch die Oberfaden-Führungsöse 33, durch den Fadenhebel 34 und durch die Oberfaden-Führungsöse 35 als nachgelagerte Oberfaden-Führungskomponente im Oberfadenweg nach dem Fadenhebel 34. Die Haupt-Oberfaden-Führungsebene verläuft in etwa parallel zur Zeichenebene der Fig. 2.The thread path presetting means 47 has a protrusion member arranged such that the upper thread 28 is formed between the upper thread guide eye 33, which is an upstream upper thread guiding component in the upper thread path in front of the thread lever 34, and the thread lever 34 is made of a main upper thread guiding plane runs out. This main upper thread guide plane is defined by the upper thread guide loop 33, by the thread lever 34 and by the upper thread guide eye 35 as a downstream upper thread guide component in the upper thread path after the thread lever 34. The main upper thread guide plane extends approximately parallel to the plane of the Fig. 2 ,

Das Überstandselement der Fadenweg-Vorgabeeinrichtung 47 ist als Bügel 48 ausgeführt. Dieser Bügel erstreckt sich quer zum Oberfadenlauf zwischen der Oberfaden-Führungsöse 33 und dem Fadenhebel 34. Alternativ zu einem Bügel kann das Überstandselement 48 auch, vergleichbar wie der Fadenhebel-Schutzkörper 39 in der Ausführung nach Fig. 5, als Stegkörper gebildet sein.The projection element of the thread path presetting device 47 is designed as a bracket 48. This bracket extends transversely to the upper thread run between the upper thread guide eye 33 and the thread lever 34. As an alternative to a bracket, the supernatant member 48 also, comparable to the thread lever protection body 39 in the embodiment according to Fig. 5 , be formed as a bridge body.

Der Bügel 48 hat einen konvexen Bügelabschnitt 49, der einen Bereich großen Überstandes des Überstandselements 48 über die Haupt-Oberfaden-Führungsebene vorgibt. Der konvexe Bügelabschnitt 49 ist bei der dargestellten Ausführung als abgerundeter Knickabschnitt des Bügels 48 ausgeführt.The bracket 48 has a convex strap portion 49 that defines a region of large overhang of the protrusion member 48 over the main needle thread guide plane. The convex bracket portion 49 is executed in the illustrated embodiment as a rounded kink portion of the bracket 48.

Beide Enden 50, 51 des Bügels 48 sind am Gehäuse der Nähmaschine, nämlich an der Tragplatte 27, fixiert. Ein in montierter Stellung oberes Ende 50 des Bügels 48 ist um eine Schwenkachse 52 (vergleiche Fig. 2), die sich parallel zum Arm 2 erstreckt, in einem Schwenk-Fixierlager 53 der Tragplatte 27 gelagert. Im Bereich dieses Endes 50 ist der Bügel 48 um 90° gegenüber seiner sonstigen Haupterstreckung parallel zu einem Stirnplattenabschnitt 54 des Kopfes 6 abgeknickt.Both ends 50, 51 of the bracket 48 are fixed to the housing of the sewing machine, namely on the support plate 27. A mounted in the upper position 50 of the bracket 48 is about a pivot axis 52 (see Fig. 2 ), which extends parallel to the arm 2, mounted in a pivot-fixing bearing 53 of the support plate 27. In the region of this end 50 of the bracket 48 is bent by 90 ° with respect to its other main extension parallel to a face plate portion 54 of the head 6.

Am anderen, in montierter Position unteren Ende 51 ist der Bügel 48 verstellbar am Gehäuse der Nähmaschine, nämlich an der Tragplatte 27, angebracht. Im Bereich des Bügelendes 51 ist der Bügel 48 wiederum um 90° abgebogen, wobei sich ein endseitiger Bügelabschnitt bis zum Bügelende 51 hin senkrecht zur Zeichenebene der Fig. 2 erstreckt.At the other, in the mounted position lower end 51, the bracket 48 is adjustably mounted on the housing of the sewing machine, namely on the support plate 27. In the region of the strap end 51, the bracket 48 is again at 90 ° bent, with an end bracket section up to the strap end 51 perpendicular to the plane of the Fig. 2 extends.

Die Verstellbarkeit ist anschaulich in den Fig. 3 und 4 in zwei unterschiedlichen Relativpositionen des Endes 51 des Bügels 48 gezeigt. Der Bügel 48 hat am verstellbaren Ende 51 bei der dargestellten Ausführung insgesamt vier Rastmarken, die als im verstellbaren Bügelende 51 angebrachte Rastnuten 55, 56, 57 und 58 ausgeführt sind. Die Rastnuten 55 bis 58 wirken mit einem Gegenkörper in Form einer Feder 59 der Tragplatte 27 zur Vorgabe der jeweiligen Relativposition des verstellbaren Bügelendes 51 zum Gehäuse zusammen. Fig. 3 zeigt die Position bei der der Gegenkörper 59 mit der am weitesten vom verstellbaren Bügelende 51 entfernt angeordneten Rastnut 58 zusammenwirkt.The adjustability is vivid in the Fig. 3 and 4 shown in two different relative positions of the end 51 of the bracket 48. The bracket 48 has at the adjustable end 51 in the illustrated embodiment a total of four locking marks, which are designed as mounted in the adjustable strap end 51 locking grooves 55, 56, 57 and 58. The locking grooves 55 to 58 cooperate with a counter body in the form of a spring 59 of the support plate 27 for specifying the respective relative position of the adjustable strap end 51 to the housing. Fig. 3 shows the position in which the counter body 59 cooperates with the farthest from the adjustable strap end 51 arranged locking groove 58.

Die Relativposition nach Fig. 3 führt dazu, dass der konvexe Bügelabschnitt 49 vergleichsweise nahe an die Tragplatte 27 heranrückt, dass also der Überstand des konvexen Bügelabschnitts 49 über die Tragplatte und damit auch über die Haupt-Oberfaden-Führungsebene minimiert ist.The relative position after Fig. 3 causes the convex bracket portion 49 comparatively close to the support plate 27 zoom, so that the supernatant of the convex bracket portion 49 is minimized on the support plate and thus also on the main upper thread guide level.

Fig. 4 zeigt die Relativposition des verstellbaren Bügelendes 51 zur Tragplatte 27, bei der der Gegenkörper 59 mit der dem Bügelende 51 nächst benachbarten Rastnut 55 zusammenwirkt. In dieser Relativposition hat der Bügel 48 und insbesondere der konvexe Bügelabschnitt 49 den größten Überstand zur Tragplatte 27 und damit auch zur Haupt-Oberfaden-Führungsebene. Durch Zusammenwirken des Gegenkörpers 59 mit dem zwischenliegenden Rastnuten 56 oder 57 lassen sich entsprechend Überstände des konvexen Bügelabschnitts 49 über die Haupt-Oberfaden-Führungsebene erzeugen, die zwischen dem maximalen Überstand nach Fig. 4 und dem minimalen Überstand nach Fig. 3 liegen. Je nachdem, wie viel Fadenlose erzeugt wird, wird die Überstands-Position des Bügels 48 am verstellbaren Bügelende 51 eingestellt. Eine große Fadenlose spielt insbesondere bei dickem zu vernähenden Nähgut eine Rolle. Fig. 4 shows the relative position of the adjustable strap end 51 to the support plate 27, in which the counter body 59 with the bracket end 51 next adjacent locking groove 55 cooperates. In this relative position of the bracket 48 and in particular the convex bracket portion 49 has the largest projection to the support plate 27 and thus also to the main upper thread guide level. By interaction of the counter body 59 with the intermediate locking grooves 56 or 57 can be correspondingly projections of the convex ironing section 49 on the main upper thread guide plane produce, between the maximum supernatant to Fig. 4 and the minimum supernatant Fig. 3 lie. Depending on how a lot of threadless is generated, the supernatant position of the bracket 48 is set on the adjustable strap end 51. A large threadless plays a role especially in thick sewing material to be sewn.

Im Verlauf zwischen dem konvexen Bügelabschnitt 49 und dem um 90° abgebogenen Ende 51 hat der Bügel 48 abschnittsweise einen gekrümmten Verlauf, um einen Mindestabstand zur Fadenanzugsfeder 32 einzuhalten.In the course between the convex bracket portion 49 and the bent by 90 ° end 51 of the bracket 48 has sections a curved course to maintain a minimum distance to Fadenanzugsfeder 32.

Die Fig. 5 bis 9 verdeutlichen die Funktion der Fadenweg-Vorgabeeinrichtung 47.The Fig. 5 to 9 illustrate the function of the thread path presetting device 47.

Fig. 5 zeigt eine Armwellenposition "0°", bei der die Nadel 10 am oberen Totpunkt ihres Bewegungsweges ist. Der Fadenhebel 34 ist in der Armwellenposition nach Fig. 5 auf dem Weg nach oben. Fig. 5 shows an arm shaft position "0 °" at which the needle 10 is at top dead center of its travel. The thread lever 34 is in the Armwellenposition after Fig. 5 On the way up.

Fig. 6 zeigt die Armwellenposition "60°" mit dem Fadenhebel 34 am oberen Totpunkt. Der Oberfaden 28 ist zwischen der Fadenanzugsfeder 32 und dem Fadenhebel 34, insbesondere zwischen der Oberfaden-Führungsöse 33 und dem Fadenhebel 34, gespannt und liegt am Bügel 48 in einem Bereich zwischen dem konvexen Bügelabschnitt 49 und dem schwenkbaren Ende 50 an. Fig. 6 shows the Armwellenposition "60 °" with the thread lever 34 at top dead center. The upper thread 28 is stretched between the Fadenanzugsfeder 32 and the thread lever 34, in particular between the upper thread guide eye 33 and the thread lever 34, and is located on the bracket 48 in a region between the convex bracket portion 49 and the pivotable end 50 at.

Fig. 7 zeigt die Armwellenposition "160°", in der der Fadenhebel 34 vom oberen Totpunkt aus auf dem Weg nach unten ist. Entsprechend ist der Oberfaden 28 im Fadenweg zwischen der Oberfaden-Führungsöse 33 und dem Fadenhebel 34 nicht mehr gespannt, sondern locker. Dies wird auch als "Fadenlose" bezeichnet. Die Fadenweg-Vorgabeeinrichtung 47 sorgt dafür, dass der lose Oberfaden 28 zwischen der Oberfaden-Führungsöse 33 und dem Fadenhebel 34 einen definierten Verlauf hat. Der Oberfaden 28 liegt am Bügel 48 wiederum zwischen dem konvexen Bügelabschnitt 49 und dem schwenkbaren Ende 50 an. Fig. 7 shows the Armwellenposition "160 °", in which the thread lever 34 is from top dead center on the way down. Accordingly, the upper thread 28 in the thread path between the upper thread guide eye 33 and the thread lever 34 is no longer tensioned, but loose. This is also called "threadless". The thread path presetting device 47 ensures that the loose upper thread 28 between the upper thread guide eye 33 and the thread lever 34 has a defined course. The upper thread 28 is on the bracket 48 in turn between the convex bracket portion 49 and the pivotable end 50 at.

Fig. 8 zeigt die Armwellenposition "220°", bei der der Fadenhebel 34 auf seinem weiteren Weg nach unten ist und in etwa auf Höhe des konvexen Bügelabschnitts 49 liegt. Der Oberfaden 28, der jetzt noch weiter lose ist als bei der Armwellenposition nach Fig. 7, liegt am Bügel 48 im Bereich des konvexen Bügelabschnitts 49 an. Die Form des Bügels 48 erzwingt auch hier einen definierten Verlauf des Oberfadens 28 zwischen der Oberfaden-Führungsöse 33 und dem Fadenhebel 34. Es ist im Bereich der Armwellenpositionen zwischen den Stellungen nach den Fig. 7 und 8 insbesondere verhindert, dass sich eine unkontrolliert große Oberfadenschlaufe bildet. Fig. 8 shows the Armwellenposition "220 °", in which the thread lever 34 is on its further way down and is approximately at the level of the convex ironing portion 49. The upper thread 28, which is now even more loose than the Armwellenposition after Fig. 7 , abuts on the bracket 48 in the region of the convex bracket portion 49. The shape of the bracket 48 forces here a defined course of the upper thread 28 between the upper thread guide eye 33 and the thread lever 34. It is in the arm shaft positions between the positions of the Fig. 7 and 8th in particular prevents an uncontrollably large upper thread loop forms.

Fig. 9 zeigt die Armwellenposition "270°", in der der Fadenhebel 34 im Bereich seines unteren Totpunktes liegt. Der Oberfaden 28 liegt nun am Bügel 48 im Bereich zwischen dem konvexen Bügelabschnitt 49 und dem verstellbaren Bügelende 51 an. Fig. 9 shows the Armwellenposition "270 °", in which the thread lever 34 is in the region of its bottom dead center. The upper thread 28 is now on the bracket 48 in the area between the convex bracket portion 49 and the adjustable strap end 51 at.

Ein weiteres Überstandselement nach Art des Überstandselements, das vorstehend im Zusammenhang mit der Fadenweg-Vorgabeeinrichtung 47 beschrieben wurde, kann im Oberfadenweg nach dem Fadenhebel 34 angeordnet sein. Insbesondere können die beiden Überstandselemente, also beispielsweise der Bügel 48 und ein weiteres Überstandselement, das ebenfalls in Form eines Bügels oder eines Voll- oder Hohlkörpers gestaltet sein kann, beiderseits des Fadenhebels 34 und zu diesem benachbart angeordnet sein.Another supernatant element on the type of supernatant element which has been described above in connection with the thread path presetting device 47 can be arranged in the upper thread path after the thread lever 34. In particular, the two supernatant elements, so for example, the bracket 48 and another supernatant element, which may also be designed in the form of a bracket or a solid or hollow body, be disposed on both sides of the thread lever 34 and adjacent thereto.

Claims (12)

Nähmaschine (1) - mit einem Gehäuse (2, 3, 4), - mit Stichbildungswerkzeugen (10, 11) zur Nahtbildung einschließlich einer Nadelstange (9) zur Halterung einer Nähnadel (10), - mit einer am Gehäuse (2 bis 4) festgelegten, einstückigen Tragplatte (27) zum Tragen von Komponenten der Nähmaschine (1), - wobei die Tragplatte (27) mindestens die nachfolgenden Komponenten trägt: -- eine Oberfaden-Führungskomponente (35, 36, 37, 38) im Oberfadenweg nach einem Fadenhebel (34), -- mindestens eine Oberfaden-Spanneinrichtung (30, 31). Sewing machine (1) with a housing (2, 3, 4), - with stitch forming tools (10, 11) for seam formation including a needle bar (9) for holding a sewing needle (10), with a one-piece support plate (27) fixed to the housing (2 to 4) for supporting components of the sewing machine (1), - wherein the support plate (27) carries at least the following components: - An upper thread guide component (35, 36, 37, 38) in the upper thread path after a thread lever (34), - At least one upper thread tensioning device (30, 31). Nähmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Tragplatte (27) mindestens eine Oberfadenklemme (36) trägt.Sewing machine according to claim 1, characterized in that the support plate (27) carries at least one upper thread clamp (36). Nähmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Tragplatte (27) eine Fadenanzugsfeder (32) trägt.Sewing machine according to claim 1 or 2, characterized in that the support plate (27) carries a Fadenanzugsfeder (32). Nähmaschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass ein Fadenhebel-Schutzkörper (39) einen integrierten Bestandteil der Tragplatte (27) darstellt.Sewing machine according to one of claims 1 to 3, characterized in that a thread lever protection body (39) is an integrated part of the support plate (27). Nähmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Tragplatte (27) Nähmaschinen-Bedienelemente (41, 43) trägt.Sewing machine according to one of claims 1 to 4, characterized in that the support plate (27) wearing sewing machine controls (41, 43). Nähmaschine nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Tragplatte (27) eine Spuleinrichtung (44) trägt.Sewing machine according to one of claims 1 to 5, characterized in that the support plate (27) carries a winding device (44). Nähmaschine nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Tragplatte (27) eine Positionsvorgabeeinrichtung (45) für die Stichbildungswerkzeuge (10, 11) trägt.Sewing machine according to one of claims 1 to 6, characterized in that the support plate (27) carries a position setting device (45) for the stitch forming tools (10, 11). Nähmaschine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Tragplatte (27) eine Beleuchtungseinrichtung (46) für zumindest einen Abschnitt eines Nähfeldes trägt.Sewing machine according to one of claims 1 to 7, characterized in that the support plate (27) carries a lighting device (46) for at least a portion of a sewing field. Nähmaschine nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Tragplatte (27) eine Fadenweg-Vorgabeeinrichtung (47) trägt, die die Länge eines Oberfadenweges zwischen einer im Fadenweg vor dem Fadenhebel (34) vorgelagerten Oberfaden-Führungskomponente (33) und dem Fadenhebel (34) beeinflusst.Sewing machine according to one of claims 1 to 8, characterized in that the support plate (27) carries a thread path presetting device (47), the length of a Oberfadenweges between in the thread path in front of the thread lever (34) upstream upper thread guide component (33) and the thread lever (34) influenced. Nähmaschine nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Tragplatte (27) alle Fadenführungskomponenten (29, 30, 31, 32, 33) der Nähmaschine (1) im Fadenweg von einer im Oberfadenweg vorgelagerten tragplattenseitigen Oberfaden-Spanneinrichtung bis zum Fadenhebel (34) trägt.Sewing machine according to one of claims 1 to 9, characterized in that the support plate (27) all yarn guide components (29, 30, 31, 32, 33) of the sewing machine (1) in the yarn path of a upstream in the upper thread path contractor side upper thread tensioning device to the thread lever (34) bears. Nähmaschine nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Tragplatte (27) alle Fadenführungskomponenten (35, 36, 37, 38) im Fadenweg vom Fadenhebel (34) bis zur Nähnadel (10) trägt.Sewing machine according to one of claims 1 to 10, characterized in that the support plate (27) carries all yarn guide components (35, 36, 37, 38) in the thread path from the thread lever (34) to the sewing needle (10). Nähmaschine nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die Tragplatte (27) über eine Versorgungsleitungen verbindende Steckverbindung mit einer gehäuseseitigen Gegen-Steckverbindung verbunden ist.Sewing machine according to one of claims 1 to 11, characterized in that the support plate (27) is connected via a supply line connecting plug connection with a housing-side counter-plug connection.
EP13189715.9A 2012-11-19 2013-10-22 Sewing machine Active EP2733246B1 (en)

Applications Claiming Priority (1)

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DE202012011059.4U DE202012011059U1 (en) 2012-11-19 2012-11-19 sewing machine

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JP (1) JP3188637U (en)
KR (1) KR200487883Y1 (en)
CN (1) CN203625654U (en)
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TW (1) TWM487321U (en)

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Publication number Priority date Publication date Assignee Title
DE102015005298A1 (en) * 2015-04-27 2016-10-27 PFAFF lndustriesysteme und Maschinen GmbH Multi-needle chain stitch sewing machine
DE202015102172U1 (en) * 2015-04-30 2016-08-04 Dürkopp Adler AG sewing machine
DE102018207426A1 (en) * 2018-05-14 2019-11-14 Dürkopp Adler AG Thread tensioning device for a machine

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EP0939159A1 (en) * 1998-02-27 1999-09-01 Fritz Gegauf Ag Bernina-Nähmaschinenfabrik Sewing machine with an adjustable head unit
US20030184994A1 (en) * 2002-03-28 2003-10-02 Brother Kogyo Kabushiki Kaisha Sewing machine with illuminating led lamp
DE10312602A1 (en) 2003-03-21 2004-09-30 Dürkopp Adler AG sewing machine
DE10344982A1 (en) 2003-09-27 2005-04-21 Duerkopp Adler Ag Thread tensioning device for a sewing machine
EP2028311A2 (en) * 2007-08-22 2009-02-25 Dürkopp Adler Aktiengesellschaft Sewing machine and method for sewing a beginning of a seam with such a sewing machine
DE102007039596A1 (en) 2007-08-22 2009-02-26 Dürkopp Adler AG Sewing machine and method for sewing a seam beginning with such a sewing machine
DE102009048794A1 (en) * 2009-10-08 2011-04-14 CHEE SIANG INDUSTRIAL CO., LTD., Wugu Thread drawing device for sewing machine, has thread tension-primary control device arranged on base plate, thread tension-secondary control device arranged on base plate, and thread drawing-electromagnet provided on side of base plate
DE102009047534A1 (en) 2009-12-04 2011-06-09 Dürkopp Adler AG sewing machine
DE202010007269U1 (en) * 2010-05-26 2011-09-23 Dürkopp Adler AG sewing machine
DE102011005198A1 (en) 2011-03-07 2012-09-13 Dürkopp Adler AG Sewing machine and method for sewing a seam beginning with such a sewing machine

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TWM487321U (en) 2014-10-01
KR200487883Y1 (en) 2018-11-16
EP2733246B1 (en) 2015-03-04
CN203625654U (en) 2014-06-04
DE202012011059U1 (en) 2014-02-20
KR20140003172U (en) 2014-05-28
JP3188637U (en) 2014-01-30

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