EP3133198A1 - Sewing machine and sewing machine module - Google Patents

Sewing machine and sewing machine module Download PDF

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Publication number
EP3133198A1
EP3133198A1 EP16182217.6A EP16182217A EP3133198A1 EP 3133198 A1 EP3133198 A1 EP 3133198A1 EP 16182217 A EP16182217 A EP 16182217A EP 3133198 A1 EP3133198 A1 EP 3133198A1
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EP
European Patent Office
Prior art keywords
guide
sewing machine
transportfußstange
bar
guide component
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
EP16182217.6A
Other languages
German (de)
French (fr)
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EP3133198B1 (en
Inventor
Anke Kleineidam
Christoph Heckner
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 EP3133198A1 publication Critical patent/EP3133198A1/en
Application granted granted Critical
Publication of EP3133198B1 publication Critical patent/EP3133198B1/en
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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D05B29/02—Presser-control devices
    • 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
    • D05B27/04—Work-feeding means with feed dogs having horizontal and vertical movements arranged above the workpieces
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means
    • D05B27/24—Feed-dog lifting and lowering devices
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D05B29/06—Presser feet

Definitions

  • the invention relates to a sewing machine according to the preamble of claim 1.
  • a transport foot bar guide improves the positional stability of the transport foot bar so that, in particular, undesired play movement of the transport foot bar to other components of the sewing machine is avoided. In particular, an undesired rotation of the transport foot to a transport foot axis is avoided.
  • a guide long hole according to claim 2 allows a particularly secure guidance of the transport foot bar.
  • a bolt according to claim 3 provides a stable and inexpensive to manufacture counter-guide component.
  • a slider according to claim 4 allows a low-wear guide of Transportfußstange.
  • the slider may be made of plastic.
  • Another object of the invention is to provide a retrofittable transport foot bar guide.
  • a sewing machine of which in the Fig. 1 a housing 1 is shown, has a stand 2, an arm 3 and a head 4, so that together with a in the Fig. 1 not shown base plate results in a total C-shaped structure of the sewing machine.
  • the needle 7 passes through a stitch hole 8 in a needle plate 9, which forms part of a support plate, not shown, which in turn represents the top of the base plate of the sewing machine.
  • the sewing machine has for holding down and for transporting sewing material during sewing a hold-down device 10, which is divided into a presser foot 11 and a transport foot 12.
  • the presser foot 11 serves to hold down the sewing material during sewing.
  • the transport foot 12 serves for transporting the material along a sewing direction parallel to the longitudinal extension of the needle plate 9.
  • a generally designated 13 fan device To ventilate the hold-down device 10 is a generally designated 13 fan device.
  • This has a fan shaft 14, with the Nähfuß character a first fan shaft rotary lever 15 is rotatably connected.
  • the first fan shaft rotary lever 15 is in turn articulated via a not visible in the drawing in detail connection on the one hand to a Transportfußstange 16 and on the other hand to a presser foot rod 17 of the hold-down device 10.
  • a second fan shaft rotary lever 18 At the first fan shaft rotary lever 15 opposite free end of the fan shaft 14, a second fan shaft rotary lever 18 is rotatably disposed.
  • a contact pin 19 of the second fan shaft rotary lever 18 is pressed against a fan shaft cam 20.
  • Fig. 2 shows a neutral position of the fan device 13, in which the fan shaft cam 20 is oriented so that the contact pin 19 occupies a minimum distance from a motor shaft 21 of a stepping motor 22.
  • the fan shaft cam 20 is rotatably connected to the motor shaft 21.
  • a fan shaft control cam wall 23 of the fan shaft cam 20 against which the abutment pin 19 abuts extends helically about a longitudinal axis of the motor shaft 21.
  • a lifting height adjusting cam 24 is non-rotatably arranged with the motor shaft 21 continues.
  • the cam disks 20, 24 each have a cam disk section which is coaxial to the motor shaft 21 and a spiral cam disk section which adjoins the latter continuously.
  • the Hubtownn-Verstell annoyings rotary lever 28 is rotatably connected to a Hubgetriebewelle 29 of a generally designated 30 Hub Whyn adjustment.
  • the Hubgetriebewelle 29 is connected via a screw jack 31 with a reciprocally driven lifting shaft 32 of the lifting height adjustment device 30 in operative connection.
  • a Hubexzenter 33 which is arranged on the arm shaft 5, the lifting gear 31 influences a lifting height of a transport stroke of the transport foot 12 and the presser foot eleventh
  • the arm shaft 5, the fan shaft 14, the motor shaft 21, the Hubgetriebewelle 29 and the lift shaft 32 are all parallel to each other.
  • the movement of the needle bar 6 includes on the one hand an up and down movement along a longitudinal axis of the needle bar 6 and on the other hand a transport movement in the sewing direction.
  • Transportfußstangen-guide 34 To guide a Axialverlagerung the Transportfußstange 16 is a Transportfußstangen-guide 34 (see. Fig. 4 ).
  • the latter comprises a connected to the needle bar frame 33 guide component 35 in the form of a guide bridge, which in the illustration after Fig. 3 removed, so not shown.
  • the guide bridge 35 is at both ends, ie at remote connection points 36, 37, fixedly connected to the needle bar frame 33 and screwed in the illustrated embodiment.
  • the guide component 35 has a running in the main body slot 38 which extends parallel to the transport bar 16.
  • the guide slot 38 thus extends in the axial direction of the transport foot rod 16.
  • the transport foot rod guide 34 further includes a counter-guide component 39 connected to the transport foot rod 16, which is in direct guide connection with the guide component 35.
  • the counter-guide component 39 comprises a bolt 40 which is fixedly connected to the Transportfußstange 16. Placed on the bolt 40 is an annular slider 41, which is also part of the counter guide component 39.
  • the slider 41 which in the Fig. 3 is not shown, is in the leadership of Transportfußstange 16 on the Fühningskomponente 35, so on an inner wall of the slot 38, at.
  • the slider 41 is made of plastic.
  • the Fig. 3 to 5 show the Transportfußstange 16 in a maximum lowered position in which the counter-guide component 39 is displaced in the guide component 35 maximum downwards.
  • the presser foot rod 17 displaced maximally downwards. This displacement takes place under bias of a compression spring 42 which is connected via a fork-shaped spring piece 43 with the presser foot rod 17 in thrust connection.
  • a Hubverlagerung the Transportfußstange 16 is mediated on the one hand on the fan shaft 14 and on the other hand via the lifting shaft 32.
  • a pull rod 48 serves to transmit a drive for raising and lowering the needle bar 6.
  • the needle bar frame 33 is pivoted about a parallel to the arm shaft pivot axis 49, along which a bearing rod 50 extends, which is axially and radially mounted on the housing 1 of the sewing machine.
  • the 6 and 7 show the transport foot bar guide 34 in a maximum raised position of the transport bar 16.
  • the Jacobsningskomponente 39 is displaced in this maximum raised position maximum upward in the guide component 35. In this position, the compression spring 42 is compressed by the spring piece 43 maximum.
  • the transport foot bar guide 34 effectively prevents the Transportfußstange 16 is undesirably pivoted about its longitudinal axis.
  • the transport foot bar guide 34 can be retrofitted to an existing sewing machine.
  • a sewing machine assembly can be made available as a retrofit kit, which includes the guide bridge 35 and the slider 41. After attaching appropriate connection lugs on the needle bar frame 33 and the bolt 40, these guide components 35, 41 can be mounted and the transport foot bar guide 34 is ready for use.

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

Abstract

Die Erfindung betrifft eine Nähmaschine mit einer Nadelstange (6) zur Haltening einer Nähnadel, mit einem Nadelstangen-Rahmen (33) zur Führung einer Bewegung der Nadelstange (6) und mit einer Transportfußstange (16) zur Halterung eines Transportfußes. Eine Transportfußstangen-Führung (34) dient zur Führung einer Axialverlagerung der TransportfuÀŸstange (16), mit einer mit dem Nadelstangenrahmen (33) verbundenen Fühningskomponente (35), mit einer mit der Transportfußstange (16) verbundenen Gegenführungskomponente (39), die in direkter Führungsverbindung mit der Führungskomponente (35) steht. Es resultiert eine Transportfußstangen-Führung, bei der eine unerwünschte Spiel-Bewegung der Transportfußstange zu anderen Komponenten der Nähmaschine vermieden ist.The invention relates to a sewing machine with a needle bar (6) for holding a sewing needle, with a needle bar frame (33) for guiding a movement of the needle bar (6) and with a Transportfußstange (16) for supporting a transport foot. A transport foot bar guide (34) serves to guide an axial displacement of the transport foot bar (16), to a follower component (35) connected to the needle bar frame (33), to a follower component (39) connected to the transport foot bar (16), in direct guide connection with the guide component (35) stands. The result is a transport foot bar guide, in which an undesirable play movement of the transport bar is avoided to other components of the sewing machine.

Description

Die Erfindung betrifft eine Nähmaschine gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a sewing machine according to the preamble of claim 1.

Eine derartige Nähmaschine ist bekannt aus der EP 2 105 526 B .Such a sewing machine is known from the EP 2 105 526 B ,

Es ist eine Aufgabe der vorliegenden Erfindung, eine Nähmaschine der eingangs genannten Art derart weiterzubilden, dass eine unerwünschte Relativbewegung zwischen Transportkomponenten und gehäusefesten Komponenten der Nähmaschine vermieden ist.It is an object of the present invention, a sewing machine of the type mentioned in such a way that an undesirable relative movement between the transport components and housing-fixed components of the sewing machine is avoided.

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.

Erfindungsgemäß wurde erkannt, dass eine Transportfußstangen-Führung eine Lagestabilität der Transportfußstange so verbessert, dass insbesondere eine unerwünschte Spiel-Bewegung der Transportfußstange zu anderen Komponenten der Nähmaschine vermieden ist. Insbesondere ein unerwünschtes Verdrehen des Transportfußes um eine Transportfußachse ist vermieden.According to the invention, it has been recognized that a transport foot bar guide improves the positional stability of the transport foot bar so that, in particular, undesired play movement of the transport foot bar to other components of the sewing machine is avoided. In particular, an undesired rotation of the transport foot to a transport foot axis is avoided.

Ein Führungslangloch nach Anspruch 2 ermöglicht eine besonders sichere Führung der Transportfußstange.A guide long hole according to claim 2 allows a particularly secure guidance of the transport foot bar.

Ein Bolzen nach Anspruch 3 ergibt eine stabile und in der Herstellung kostengünstige Gegenführungskomponente.A bolt according to claim 3 provides a stable and inexpensive to manufacture counter-guide component.

Ein Gleitstück nach Anspruch 4 ermöglicht eine verschleißarme Führung der Transportfußstange. Das Gleitstück kann aus Kunststoff gefertigt sein.A slider according to claim 4 allows a low-wear guide of Transportfußstange. The slider may be made of plastic.

Eine weitere Aufgabe der Erfindung ist es, eine nachrüstbare Transportfußstangen-Führung zu schaffen.Another object of the invention is to provide a retrofittable transport foot bar guide.

Diese weitere Aufgabe ist erfindungsgemäß gelöst durch eine Nähmaschinen-Baugruppe mit den im Anspruch 5 angegebenen Merkmalen.This further object is achieved by a sewing machine assembly with the features specified in claim 5.

Durch eine solche Nähmaschinen-Baugruppe ist eine Nachrüstmöglichkeit für eine bestehende Nähmaschine gegeben. Die Führungskomponente und die Gegenführungskomponente der Nähmaschinen-Baugruppe können so ausgeführt sein, wie vorstehend im Zusammenhang mit der erfindungsgemäßen Nähmaschine bereits erläutert.By such a sewing machine assembly a retrofit option for an existing sewing machine is given. The guide component and the counterpart component of the sewing machine assembly can be designed as already explained above in connection with the sewing machine according to the invention.

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

Fig. 1
schematisch ein zum Teil gebrochen dargestelltes Gehäuse einer Nähmaschine in einer Rückansicht;
Fig. 2
perspektivisch eine Baugruppe mechanischer Komponenten der Nähmaschine mit einer Lüftereinrichtung zum Lüften einer Niederhalte-Einrichtung der Nähmaschine und einer Hubhöhen-Verstelleinrichtung zur Vorgabe eines Transporthubes der Niederhalte-Einrichtung;
Fig. 3
eine Ansicht auf die Baugruppe gemäß Blickrichtung III in Fig. 2, wobei Antriebskomponenten weggelassen und andere Komponenten, beispielsweise ein Fadenhebel, hinzugefügt sind und wobei eine Führungskomponente einer Transportfußstangen-Führung zur Führung einer Axialverlagerung einer Transportfußstange weggelassen ist, in einer abgesenkten Stellung einer Transportfußstange;
Fig. 4
in einer zu Fig. 3 ähnlichen Ansicht die Baugruppe mit montierten Komponenten der Transportfußstangen-Führung;
Fig. 5
die Baugruppe nach Fig. 4, gesehen aus anderer Blickrichtung;
Fig. 6
in einer zu Fig. 4 ähnlichen Darstellung die Baugruppe mit der Transportfußstange in maximal angehobener, also gelüfteter Stellung; und
Fig. 7
die Baugruppe nach Fig. 6, gesehen aus Blickrichtung nach Fig. 5.
An exemplary embodiment of the invention will be explained in more detail with reference to the drawing. In this show:
Fig. 1
schematically a partially broken housing of a sewing machine in a rear view;
Fig. 2
in perspective, an assembly of mechanical components of the sewing machine with a fan device for releasing a hold-down device of the sewing machine and a lifting height adjustment device for specifying a Transporthubes the hold-down device;
Fig. 3
a view of the assembly according to viewing direction III in Fig. 2 where drive components are omitted and others Components, such as a thread lever, are added and wherein a guide component of a transport foot bar guide is omitted for guiding an axial displacement of a Transportfußstange, in a lowered position of Transportfußstange;
Fig. 4
in one too Fig. 3 similar view of the assembly with mounted components of the transport foot bar guide;
Fig. 5
the module after Fig. 4 , seen from another perspective;
Fig. 6
in one too Fig. 4 similar representation of the assembly with the Transportfußstange in the maximum raised, so ventilated position; and
Fig. 7
the module after Fig. 6 , seen from the direction of Fig. 5 ,

Eine Nähmaschine, von der in der Fig. 1 ein Gehäuse 1 dargestellt ist, hat einen Ständer 2, einen Arm 3 sowie einen Kopf 4, so dass sich zusammen mit einer in der Fig. 1 nicht dargestellten Grundplatte ein insgesamt C-förmiger Aufbau der Nähmaschine ergibt. Eine über einen in der Fig. nicht dargestellten Hauptantrieb angetriebene Armwelle 5 treibt eine Nadelstange 6 mit einer hieran festgelegten Nähnadel 7 auf- und abgehend an. Die Nadel 7 durchtritt dabei ein Stichloch 8 in einer Stichplatte 9, die Teil einer nicht dargestellten Auflageplatte bildet, die wiederum die Oberseite der Grundplatte der Nähmaschine darstellt.A sewing machine, of which in the Fig. 1 a housing 1 is shown, has a stand 2, an arm 3 and a head 4, so that together with a in the Fig. 1 not shown base plate results in a total C-shaped structure of the sewing machine. An arm shaft 5, which is driven via a main drive, not shown in the figure, drives a needle bar 6 with a sewing needle 7 fixed thereto upwards and downwards. The needle 7 passes through a stitch hole 8 in a needle plate 9, which forms part of a support plate, not shown, which in turn represents the top of the base plate of the sewing machine.

Die Nähmaschine hat zum Niederhalten sowie zum Transport von Nähgut während des Nähens eine Niederhalte-Einrichtung 10, der unterteilt ist einen Drückerfuß 11 und einen Transportfuß 12. Der Drückerfuß 11 dient zum Niederhalten des Nähguts während des Nähens. Der Transportfuß 12 dient zum Transportieren des Nähguts längs einer Nährichtung parallel zur Längserstreckung der Stichplatte 9.The sewing machine has for holding down and for transporting sewing material during sewing a hold-down device 10, which is divided into a presser foot 11 and a transport foot 12. The presser foot 11 serves to hold down the sewing material during sewing. The transport foot 12 serves for transporting the material along a sewing direction parallel to the longitudinal extension of the needle plate 9.

Zum Lüften der Niederhalte-Einrichtung 10 dient eine insgesamt mit 13 bezeichnete Lüftereinrichtung. Diese hat eine Lüfterwelle 14, mit der nähfußseitig ein erster Lüfterwellen-Drehhebel 15 drehfest verbunden ist. Der erste Lüfterwellen-Drehhebel 15 ist wiederum über eine in der Zeichnung nicht im Einzelnen sichtbare Verbindung einerseits an einer Transportfußstange 16 und andererseits an einer Drückerfußstange 17 der Niederhalte-Einrichtung 10 angelenkt. An dem dem ersten Lüfterwellen-Drehhebel 15 gegenüberliegenden freien Ende der Lüfterwelle 14 ist ein zweiter Lüfterwellen-Drehhebel 18 drehfest angeordnet. Über eine in der Zeichnung nicht dargestellte Vorspannfeder ist ein Anlagebolzen 19 des zweiten Lüfterwellen-Drehhebels 18 gegen eine Lüfterwellen-Kurvenscheibe 20 gedrückt.To ventilate the hold-down device 10 is a generally designated 13 fan device. This has a fan shaft 14, with the Nähfußseitig a first fan shaft rotary lever 15 is rotatably connected. The first fan shaft rotary lever 15 is in turn articulated via a not visible in the drawing in detail connection on the one hand to a Transportfußstange 16 and on the other hand to a presser foot rod 17 of the hold-down device 10. At the first fan shaft rotary lever 15 opposite free end of the fan shaft 14, a second fan shaft rotary lever 18 is rotatably disposed. About a bias spring, not shown in the drawing, a contact pin 19 of the second fan shaft rotary lever 18 is pressed against a fan shaft cam 20.

Fig. 2 zeigt eine Neutralstellung der Lüftereinrichtung 13, in der die Lüfterwellen-Kurvenscheibe 20 so orientiert ist, dass der Anlagebolzen 19 einen minimalen Abstand zu einer Motorwelle 21 eines Schrittmotors 22 einnimmt. Die Lüfterwellen-Kurvenscheibe 20 ist drehfest mit der Motorwelle 21 verbunden. Eine Lüfterwellen-Steuerkurvenwand 23 der Lüfterwellen-Kurvenscheibe 20, an der der Anlagebolzen 19 anliegt, verläuft um eine Längsachse der Motorwelle 21 spiralförmig. Fig. 2 shows a neutral position of the fan device 13, in which the fan shaft cam 20 is oriented so that the contact pin 19 occupies a minimum distance from a motor shaft 21 of a stepping motor 22. The fan shaft cam 20 is rotatably connected to the motor shaft 21. A fan shaft control cam wall 23 of the fan shaft cam 20 against which the abutment pin 19 abuts extends helically about a longitudinal axis of the motor shaft 21.

Beabstandet zur Lüfterwellen-Kurvenscheibe 20 ist drehfest mit der Motorwelle 21 weiterhin eine Hubhöhen-Verstelleinrichtungs-Kurvenscheibe 24 angeordnet. Die Kurvenscheiben 20, 24 weisen jeweils einen zur Motorwelle 21 koaxialen Kurvenscheibenabschnitt und einen sich hieran stetig anschließenden spiralförmigen Kurvenscheibenabschnitt auf.Spaced to the fan shaft cam 20, a lifting height adjusting cam 24 is non-rotatably arranged with the motor shaft 21 continues. The cam disks 20, 24 each have a cam disk section which is coaxial to the motor shaft 21 and a spiral cam disk section which adjoins the latter continuously.

Über Madenschrauben bzw. Gewindestifte 25, die in der Zeichnung in einer Explosionsdarstellung gezeigt sind, erfolgt eine drehfeste Festlegung der Kurvenscheiben 20, 24 an der Motorwelle 21. Entsprechende Gewindestifte 25 dienen zur Drehbefestigung der verschiedenen anderen Wellenkomponenten der in der Fig. 2 dargestellten Baugruppe. Die beiden Kurvenscheiben 20, 24 sind identisch geformte Bauteile.About grub screws or setscrews 25, which are shown in the drawing in an exploded view, there is a rotationally fixed fixing the cams 20, 24 on the motor shaft 21. Corresponding setscrews 25 are used for the rotational attachment of the various other wave components in the Fig. 2 shown assembly. The two cams 20, 24 are identically shaped components.

An der Hubhöhen-Verstelleinrichtungs-Kurvenscheibe 24 ist über eine nicht in der Zeichnung dargestellte Vorspannfeder vorgespannt ein Anlagebolzen 27 eines Hubhöhen-Verstelleinrichtungs-Drehhebels 28 angelegt.At the lift height Verstellinrichtungs cam 24 is biased by a bias spring not shown in the drawing, a contact pin 27 a Hubhöhen-Verstellinrichtungs rotary lever 28 is applied.

Der Hubhöhen-Verstelleinrichtungs-Drehhebel 28 ist drehfest mit einer Hubgetriebewelle 29 einer insgesamt mit 30 bezeichneten Hubhöhen-Verstelleinrichtung verbunden. Die Hubgetriebewelle 29 steht über ein Hubgetriebe 31 mit einer oszillierend antreibbaren Hubwelle 32 der Hubhöhen-Verstelleinrichtung 30 in Wirkverbindung. Gemeinsam mit einem Hubexzenter 33, der auf der Armwelle 5 angeordnet ist, beeinflusst das Hubgetriebe 31 eine Hubhöhe eines Transporthubes des Transportfußes 12 und des Drückerfußes 11.The Hubhöhen-Verstelleinrichtungs rotary lever 28 is rotatably connected to a Hubgetriebewelle 29 of a generally designated 30 Hubhöhen adjustment. The Hubgetriebewelle 29 is connected via a screw jack 31 with a reciprocally driven lifting shaft 32 of the lifting height adjustment device 30 in operative connection. Together with a Hubexzenter 33, which is arranged on the arm shaft 5, the lifting gear 31 influences a lifting height of a transport stroke of the transport foot 12 and the presser foot eleventh

Die Armwelle 5, die Lüfterwelle 14, die Motorwelle 21, die Hubgetriebewelle 29 und die Hubwelle 32 verlaufen alle parallel zueinander.The arm shaft 5, the fan shaft 14, the motor shaft 21, the Hubgetriebewelle 29 and the lift shaft 32 are all parallel to each other.

Zur Führung einer Bewegung der Nadelstange 6 dient ein Nadelstangenrahmen 33 (vgl. Fig. 3 bis 7). Die Bewegung der Nadelstange 6 beinhaltet einerseits eine auf- und abgehende Bewegung längs einer Längsachse der Nadelstange 6 und andererseits eine Transportbewegung in der Nährichtung.To guide a movement of the needle bar 6 is a needle bar frame 33 (see. Fig. 3 to 7 ). The movement of the needle bar 6 includes on the one hand an up and down movement along a longitudinal axis of the needle bar 6 and on the other hand a transport movement in the sewing direction.

Zur Führung einer Axialverlagerung der Transportfußstange 16 dient eine Transportfußstangen-Führung 34 (vgl. Fig. 4). Letztere umfasst eine mit dem Nadelstangen-Rahmen 33 verbundene Führungskomponente 35 in Form einer Führungsbrücke, die bei der Darstellung nach Fig. 3 abgenommen, also nicht dargestellt ist. Die Führungsbrücke 35 ist an beiden Enden, also an entfernten Verbindungspunkten 36, 37, mit dem Nadelstangenrahmen 33 fest verbunden und bei der dargestellten Ausführung verschraubt.To guide a Axialverlagerung the Transportfußstange 16 is a Transportfußstangen-guide 34 (see. Fig. 4 ). The latter comprises a connected to the needle bar frame 33 guide component 35 in the form of a guide bridge, which in the illustration after Fig. 3 removed, so not shown. The guide bridge 35 is at both ends, ie at remote connection points 36, 37, fixedly connected to the needle bar frame 33 and screwed in the illustrated embodiment.

Die Führungskomponente 35 hat ein in deren Grundkörper ausgeführtes Langloch 38, das sich parallel zur Transportfußstange 16 erstreckt.The guide component 35 has a running in the main body slot 38 which extends parallel to the transport bar 16.

Das Führungslangloch 38 verläuft also in axialer Richtung der Transportfußstange 16. Zur Transportfußstangen-Führung 34 gehört weiterhin eine mit der Transportfußstange 16 verbundene Gegenführungskomponente 39, die in direkter Führungsverbindung mit der Führungskomponente 35 steht.The guide slot 38 thus extends in the axial direction of the transport foot rod 16. The transport foot rod guide 34 further includes a counter-guide component 39 connected to the transport foot rod 16, which is in direct guide connection with the guide component 35.

Die Gegenführungskomponente 39 umfasst einen Bolzen 40, der fest mit der Transportfußstange 16 verbunden ist. Auf den Bolzen 40 aufgesteckt ist ein ringförmiges Gleitstück 41, das ebenfalls Teil der Gegenführungskomponente 39 ist. Das Gleitstück 41, das in der Fig. 3 nicht dargestellt ist, liegt bei der Führung der Transportfußstange 16 an der Fühningskomponente 35, also an einer Innenwand des Langlochs 38, an. Das Gleitstück 41 ist aus Kunststoff.The counter-guide component 39 comprises a bolt 40 which is fixedly connected to the Transportfußstange 16. Placed on the bolt 40 is an annular slider 41, which is also part of the counter guide component 39. The slider 41, which in the Fig. 3 is not shown, is in the leadership of Transportfußstange 16 on the Fühningskomponente 35, so on an inner wall of the slot 38, at. The slider 41 is made of plastic.

Die Fig. 3 bis 5 zeigen die Transportfußstange 16 in einer maximal abgesenkten Position, in der die Gegenführungskomponente 39 in der Führungskomponente 35 maximal nach unten verlagert ist. Gleichzeitig ist in der Stellung nach den Fig. 3 bis 5 auch die Drückerfußstange 17 maximal nach unten verlagert. Diese Verlagerung erfolgt unter Vorspannung einer Druckfeder 42, die über ein gabelförmiges Federstück 43 mit der Drückerfußstange 17 in Schubverbindung steht. Eine Hubverlagerung der Transportfußstange 16 wird vermittelt einerseits über die Lüfterwelle 14 und andererseits über die Hubwelle 32. Hierzu dient eine Hebelverbindung mit einem Übertragungshebel 44, der drehfest mit der Hubwelle 32 verbunden ist und mit einer Zugstange 45, die wiederum auf einen Dreiecks-Hebel 46 wirkt, der über einen weiteren Übertragungshebel 47 über ein Gelenk, dessen Gelenkachse mit einer Längsachse des Bolzens 40 zusammenfällt, mit der Transportfußstange 16 verbunden ist.The Fig. 3 to 5 show the Transportfußstange 16 in a maximum lowered position in which the counter-guide component 39 is displaced in the guide component 35 maximum downwards. At the same time in the position after the Fig. 3 to 5 also the presser foot rod 17 displaced maximally downwards. This displacement takes place under bias of a compression spring 42 which is connected via a fork-shaped spring piece 43 with the presser foot rod 17 in thrust connection. A Hubverlagerung the Transportfußstange 16 is mediated on the one hand on the fan shaft 14 and on the other hand via the lifting shaft 32. For this purpose, a lever connection with a transmission lever 44 which is rotatably connected to the lifting shaft 32 and a tie rod 45, which in turn on a triangle lever 46th acts, which is connected via a further transmission lever 47 via a joint whose hinge axis coincides with a longitudinal axis of the bolt 40 with the Transportfußstange 16.

Eine Zugstange 48 dient zur Übertragung eines Antriebs zum Auf- und Abgehen der Nadelstange 6.A pull rod 48 serves to transmit a drive for raising and lowering the needle bar 6.

Zur Erzeugung einer Transportbewegung der Transportfußstange 16 einerseits und der Nadelstange 6 andererseits dient ein nicht dargestellter Schwingantrieb für den Nadelstangenrahmen 33, der von der Armwelle 5 abgeleitet wird. Der Nadelstangenrahmen 33 wird um eine parallel zur Armwelle verlaufende Schwenkachse 49 geschwenkt, längs der eine Lagerstange 50 verläuft, die axial und radial am Gehäuse 1 der Nähmaschine gelagert ist.To generate a transport movement of the Transportfußstange 16 on the one hand and the needle bar 6 on the other hand serves an unillustrated oscillating drive for the needle bar frame 33, which is derived from the arm shaft 5. The needle bar frame 33 is pivoted about a parallel to the arm shaft pivot axis 49, along which a bearing rod 50 extends, which is axially and radially mounted on the housing 1 of the sewing machine.

Die Fig. 6 und 7 zeigen die Transportfußstangen-Führung 34 in einer maximal angehobenen Stellung der Transportfußstange 16. Die Gegenfühningskomponente 39 ist in dieser maximal angehobenen Stellung maximal nach oben in der Führungskomponente 35 verlagert. In dieser Stellung ist die Druckfeder 42 durch das Federstück 43 maximal komprimiert.The 6 and 7 show the transport foot bar guide 34 in a maximum raised position of the transport bar 16. The Gegenfühningskomponente 39 is displaced in this maximum raised position maximum upward in the guide component 35. In this position, the compression spring 42 is compressed by the spring piece 43 maximum.

Die Transportfußstangen-Führung 34 verhindert wirkungsvoll, dass die Transportfußstange 16 unerwünscht um ihre Längsachse verschwenkt wird.The transport foot bar guide 34 effectively prevents the Transportfußstange 16 is undesirably pivoted about its longitudinal axis.

Die Transportfußstangen-Führung 34 kann bei einer bestehenden Nähmaschine nachgerüstet werden. Hierzu kann als Nachrüstsatz eine Nähmaschinen-Baugruppe zur Verfügung gestellt werden, die die Führungsbrücke 35 und das Gleitstück 41 umfasst. Nach Anbringen entsprechender Verbindungsansätze am Nadelstangenrahmen 33 und des Bolzens 40 können diese Führungskomponenten 35, 41 montiert werden und die Transportfußstangen-Führung 34 ist einsatzbereit.The transport foot bar guide 34 can be retrofitted to an existing sewing machine. For this purpose, a sewing machine assembly can be made available as a retrofit kit, which includes the guide bridge 35 and the slider 41. After attaching appropriate connection lugs on the needle bar frame 33 and the bolt 40, these guide components 35, 41 can be mounted and the transport foot bar guide 34 is ready for use.

Claims (5)

Nähmaschine - mit einer Nadelstange (6) zur Halterung einer Nähnadel (7), - mit einem Nadelstangen-Rahmen (33) zur Führung einer Bewegung der Nadelstange (6), - mit einer Transportfußstange (16) zur Halterung eines Transportfußes (12), - gekennzeichnet durch eine Transportfußstangen-Führung (34) zur Führung einer Axialverlagerung der Transportfußstange (16), -- mit einer mit dem Nadelstangenrahmen (33) verbundenen Führungskomponente (35), -- mit einer mit der Transportfußstange (16) verbundenen Gegenführungskomponente (39), die in direkter Führungsverbindung mit der Führungskomponente (35) steht. sewing machine with a needle bar (6) for holding a sewing needle (7), - With a needle bar frame (33) for guiding a movement of the needle bar (6), - with a Transportfußstange (16) for supporting a transport foot (12), characterized by a transport foot bar guide (34) for guiding an axial displacement of the transport foot bar (16), with a guide component (35) connected to the needle bar frame (33), - With a with the Transportfußstange (16) connected counter guide component (39) which is in direct guide connection with the guide component (35). Nähmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Führungskomponente (35) ein Führungslangloch (38) aufweist, das in axialer Richtung der Transportfußstange (16) verläuft.Sewing machine according to claim 1, characterized in that the guide component (35) has a guide long hole (38) extending in the axial direction of the Transportfußstange (16). Nähmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Gegenführungskomponente (39) einen Bolzen (40) aufweist, der fest mit der Transportfußstange (16) verbunden ist.Sewing machine according to claim 1 or 2, characterized in that the counter guide component (39) has a bolt (40) which is fixedly connected to the Transportfußstange (16). Nähmaschine nach Anspruch 3, dadurch gekennzeichnet, dass die Gegenführungskomponente (39) ein mit dem Bolzen (40) verbundenes Gleitstück (41) aufweist, welches bei der Führung der Transportfußstange (16) an der Führungskomponente (35) anliegt.Sewing machine according to claim 3, characterized in that the counter-guide component (39) has a slider (41) connected to the bolt (40) which rests against the guide component (35) when the transport foot rod (16) is guided. Nähmaschinen-Baugruppe zur Führung einer Axialverlagerung einer Transportfußstange (16) einer Nähmaschine - mit einer mit einem Nadelstangen-Rahmen (33), der zur Führung einer Bewegung einer Nadelstange (6) dient, verbindbaren Führungskomponente (35), - mit einer mit der Transportfußstange (16) verbindbaren Gegenführungskomponente (39), die in direkter Führungsverbindung mit der Führungskomponente (35) steht. Sewing machine assembly for guiding an axial displacement of a Transportfußstange (16) of a sewing machine with a guide component (35) which can be connected to a needle bar frame (33) which serves to guide a movement of a needle bar (6), - With a with the Transportfußstange (16) connectable counter-guide component (39) which is in direct guide connection with the guide component (35).
EP16182217.6A 2015-08-20 2016-08-01 Sewing machine and sewing machine module Active EP3133198B1 (en)

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Application Number Priority Date Filing Date Title
DE202015104412.7U DE202015104412U1 (en) 2015-08-20 2015-08-20 Sewing machine and sewing machine assembly

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EP3133198A1 true EP3133198A1 (en) 2017-02-22
EP3133198B1 EP3133198B1 (en) 2019-05-29

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EP (1) EP3133198B1 (en)
KR (1) KR20170000791U (en)
CN (1) CN205974966U (en)
DE (1) DE202015104412U1 (en)
TW (1) TWM543252U (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046814A1 (en) * 1980-08-22 1982-03-10 Pfaff Industriemaschinen GmbH Feed foot for sewing machine
US4915044A (en) * 1988-06-07 1990-04-10 Ssmc Inc. Cloth presser mechanism with rack and pinion needle rod-drive
JPH07231991A (en) * 1994-02-22 1995-09-05 Tokai Ind Sewing Mach Co Ltd Fabric presser assembly of sewing machine
JPH10305182A (en) * 1997-05-09 1998-11-17 Barudan Co Ltd Cloth presser foot device of sewing machine
DE102008051945A1 (en) * 2007-10-17 2009-05-07 Tokai Kogyo Mishin K.K., Kasugai Pressure foot for sewing machine, includes component with inclined surface designed to push thread into position avoiding contact with sewing needle tip
EP2105526B1 (en) 2008-03-29 2011-07-13 Dürkopp Adler AG Sewing machine
EP2660378A1 (en) * 2012-05-02 2013-11-06 Minerva Boskovice, a.s. Sewing machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19918169A1 (en) * 1999-04-21 2000-10-26 Zsk Stickmasch Gmbh Presser foot on sewing or embroidery machine has interceptor to limit pressure with adjustment for distance relative to needle plate

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046814A1 (en) * 1980-08-22 1982-03-10 Pfaff Industriemaschinen GmbH Feed foot for sewing machine
US4915044A (en) * 1988-06-07 1990-04-10 Ssmc Inc. Cloth presser mechanism with rack and pinion needle rod-drive
JPH07231991A (en) * 1994-02-22 1995-09-05 Tokai Ind Sewing Mach Co Ltd Fabric presser assembly of sewing machine
JPH10305182A (en) * 1997-05-09 1998-11-17 Barudan Co Ltd Cloth presser foot device of sewing machine
DE102008051945A1 (en) * 2007-10-17 2009-05-07 Tokai Kogyo Mishin K.K., Kasugai Pressure foot for sewing machine, includes component with inclined surface designed to push thread into position avoiding contact with sewing needle tip
EP2105526B1 (en) 2008-03-29 2011-07-13 Dürkopp Adler AG Sewing machine
EP2660378A1 (en) * 2012-05-02 2013-11-06 Minerva Boskovice, a.s. Sewing machine

Also Published As

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CN205974966U (en) 2017-02-22
DE202015104412U1 (en) 2016-11-22
KR20170000791U (en) 2017-03-02
EP3133198B1 (en) 2019-05-29
TWM543252U (en) 2017-06-11

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