EP0345448A1 - Sewing apparatus - Google Patents

Sewing apparatus Download PDF

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Publication number
EP0345448A1
EP0345448A1 EP19890107276 EP89107276A EP0345448A1 EP 0345448 A1 EP0345448 A1 EP 0345448A1 EP 19890107276 EP19890107276 EP 19890107276 EP 89107276 A EP89107276 A EP 89107276A EP 0345448 A1 EP0345448 A1 EP 0345448A1
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EP
European Patent Office
Prior art keywords
sewing machine
support arm
sewing
column
carriage
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.)
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Application number
EP19890107276
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German (de)
French (fr)
Inventor
Alfons Beisler
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Beisler GmbH
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Beisler GmbH
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Filing date
Publication date
Application filed by Beisler GmbH filed Critical Beisler GmbH
Publication of EP0345448A1 publication Critical patent/EP0345448A1/en
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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B75/00—Frames, stands, tables, or other furniture adapted to carry sewing machines

Definitions

  • the invention relates to a sewing device with a sewing machine, which is adjustably mounted on a base frame in two mutually perpendicular directions.
  • the sewing machine is mounted displaceably on a crossbar to its longitudinal direction.
  • the crossbar is movably supported on its two longitudinal ends on two rails which run perpendicular to the longitudinal direction of the crossbar.
  • the sewing machine can thus be moved in the plane spanned by the two directions of movement.
  • the sewing machine is pivotally mounted on the cross-beam about an axis running through the needle axis, so that it can always adjust tangentially to the curvature of a seam to be sewn.
  • a disadvantage of this arrangement is that only the space between the rails is available for the workpiece and the devices holding the workpiece, the distance between the rails being fixed.
  • the sewing device can essentially only be used for one purpose. Any other task also requires a redesign of the frame supporting the sewing machine. For each new task, therefore, a special production is required, which drives up the price for such sewing devices considerably.
  • the invention has for its object to provide a sewing device of the type mentioned, which with relatively minor and easy to carry out adaptation measures for different purposes, i.e. can be used for differently shaped workpieces and different seam courses.
  • the sewing machine is arranged at one end of a horizontal support arm which is slidably guided on a vertical column parallel to its longitudinal direction, and that the column is on a carriage which is perpendicular to the direction of displacement of the support arm on the base frame is guided.
  • the arrangement of the sewing machine according to the invention has the advantage that the sewing machine is completely freely accessible from one side.
  • Workpiece holders of any shape and size can be installed or inserted between the support arm and the base frame supporting the column.
  • the sewing machine can sew up to a distance measured from the sewing material edge, which is predetermined by the clear opening of the sewing machine housing, with any course and any direction Sew the device by moving the column along the workpiece or adjusting the support arm on the column.
  • the same unit consisting of the base frame, the column, the support arm and the sewing machine can be expanded to different machines by adding different workpiece holders.
  • the versatility of the sewing device according to the invention can be significantly increased if the sewing machine is rotatably mounted on the support arm about an axis of rotation extending through the needle axis.
  • a rotatable mounting of the sewing machine about an axis running through the needle axis is already known from DD-PS 53 544.
  • the sewing machine can only be pivoted there by a limited angle with respect to the crossbar. Swiveling beyond this angle is precluded by the mounting of the sewing machine which enables the movement on the crossbar. Thanks to the arrangement of the sewing machine according to the invention at the free end of the support arm, there is nothing that could hinder the rotatability of the sewing machine, so that it can possibly be rotated through 360 °.
  • the machine can, for example, always be set so that it moves around all the edges of a workpiece without it having to be moved, provided that the workpiece does not protrude beyond the range of movement of the sewing machine, which is predetermined by the displacement path of the column and the displacement path of the support arm.
  • the sewing machine is provided with a cutting device which has a knife which is arranged directly next to the needle and can be actuated synchronously with it.
  • the sewing device shown in Figure 1 comprises a base frame 10 with an essentially rectangular frame 12 which rests on feet 14.
  • the frame 12 carries two to each other parallel rails 16, on which a carriage 18 is slidably guided by means of suitable bearings, not shown.
  • the carriage is driven by means of a motor 20 fastened to the underside of the carriage, the drive pinion 22 of which meshes with a rack 24 arranged on the frame 12 and directed parallel to the rails 16.
  • the carriage 18 carries a column 26 consisting of a rectangular profile.
  • guide rods 30 are arranged between side flanges 28 and parallel to the column 26, on which a support carriage 34 is guided in a vertically adjustable manner by means of guide bushings 32 (FIG. 2) .
  • the vertical adjustment of the slide 34 takes place with the aid of a working cylinder 36 which is supported on a column 38 fixed to the column.
  • a dovetail guide 42 On the support carriage 34 there is an elongated support arm 40 in the direction of the double arrow B, i.e. guided horizontally displaceably perpendicular to the direction of displacement of the carriage 18, the guidance being able to take place in any suitable manner and is only symbolically indicated in FIG. 2 by a dovetail guide 42.
  • the adjustment of the support arm in the direction of the double arrow B takes place with the aid of a motor 44 fastened to the support slide 34, the drive pinion 46 of which meshes with a rack 48 directed at the support arm 40 and parallel to its longitudinal direction.
  • the support arm 40 carries at its one free end a sewing machine which is attached to the support arm 40 with its upper side hanging.
  • a workpiece support 54 is also fastened to the base frame 10 by means of a support 52.
  • the workpiece support 54 contains a slot 56 which is intended for the passage of the needle and corresponds to the course of the seam. This slot serves only for the passage of the needle, not for guiding the sewing machine. However, this carries on the needle plate a projection 58 which faces the needle and engages in the slot 56 during the sewing process in order to prevent the fabric part to be sewn from being pressed into the slot 56 by the needle.
  • it In order to bring the sewing machine 50 into the sewing position in the present example, it must first be adjusted in the direction of the workpiece support 54 and then raised slightly so that the projection 58 dips into the slot 56.
  • the movement of the sewing machine 50 along the slot 56 then takes place by a displacement of the carriage 18 on the rails 16 on the one hand and a displacement of the support arm 40 on the column 26 on the other hand. Both movements are controlled by an electronic control device 58 schematically indicated in FIG. 1.
  • the unit consisting of the base frame 10, the column 26, the support arm 40 and the sewing machine 50 can be combined with workpiece holders or workpiece supports of any size and shape. In this way, a basic unit is obtained which can be varied without great effort according to the special customer requirements.
  • FIG. 4 A modified embodiment is shown in FIG. 4, for example, the same parts being provided with the same reference numerals.
  • the embodiment shown in Figure 4 differs from the embodiment 1 in that the sewing machine 50 is rotatably mounted on the free end of the support arm 40 about an axis extending through the needle axis.
  • the stub shaft 60 which carries the sewing machine 50 and is supported in the support arm 40, is fastened to the top of the sewing machine housing and carries at its free end a gear wheel 62 which meshes with the drive pinion 64 of an electric motor 66, which in turn is connected to the support arm 40 via a holder 68 is attached.
  • the sewing machine 50 can thus be rotated through 360 ° if necessary. This makes it possible, for example, to first sew on a workpiece by moving the carriage 18 parallel to an edge of the workpiece and then, after rotation of the sewing machine 50 about its axis, by sewing the support arm 40 to sew along another edge of the workpiece.
  • the sewing machine 50 also carries a cutting device 70, indicated only schematically, with a knife 72, which can be moved up and down synchronously with the needle 76 of the sewing machine via a parallelogram linkage 74 and thus cuts through the workpiece to be sewn parallel to the sewn seam .
  • the knife 72 is raised so that it does not hinder the rotation of the sewing machine about the needle axis. This ensures a parallel cut at a defined distance from the seam without any further work.
  • FIG. 4 also shows, as an exemplary embodiment, a workpiece carrier 78 with a plurality of workpiece support surfaces 80, which is arranged on the base frame 10 so as to be rotatable about a vertical axis 82.
  • the workpiece carrier 78 can also have more than the two workpiece support surfaces 80 shown contain. This arrangement not only makes it possible to avoid the idle times required by placing, aligning and clamping the workpieces, but also under certain circumstances allows the workpieces to be fed and removed automatically, since space is now also available to set up appropriate feed or discharge devices who do not hinder the sewing device itself.

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

Abstract

In a sewing apparatus with a sewing machine (50) mounted on a base stand (10) so as to be adjustable in two mutually perpendicular directions, the sewing machine is arranged at one end of a horizontal supporting arm (40) which is guided displaceably on a vertical column (26) in parallel with its longitudinal direction, the column (26) standing on a slide (18) which is guided on the base stand (10) so as to be displaceable perpendicularly relative to the direction of displacement of the supporting arm (40). <IMAGE>

Description

Die Erfindung betrifft eine Nähvorrichtung mit einer Näh­maschine, die auf einem Grundgestell in zwei zueinander senkrechten Richtungen verstellbar gelagert ist.The invention relates to a sewing device with a sewing machine, which is adjustably mounted on a base frame in two mutually perpendicular directions.

Bei einer aus der DD-PS 53 544 bekannten Nähvorrichtung der vorstehend genannten Art ist die Nähmaschine an einer Quer­traverse zu deren Längsrichtung verschiebbar gelagert. Die Quertraverse ist an ihren beiden Längsenden auf zwei Schie­nen verfahrbar gelagert, die senkrecht zur Längsrichtung der Quertraverse verlaufen. Somit kann die Nähmaschine in der von den beiden Bewegungsrichtungen aufgespannten Ebene be­wegt werden. Gleichzeitig ist die Nähmaschine um eine durch die Nadelachse verlaufende Achse schwenkbar an der Quertra­verse gelagert, so daß sie sich immer tangential zur Krümmung einer zu nähenden Naht einstellen kann.In a sewing device of the aforementioned type known from DD-PS 53 544, the sewing machine is mounted displaceably on a crossbar to its longitudinal direction. The crossbar is movably supported on its two longitudinal ends on two rails which run perpendicular to the longitudinal direction of the crossbar. The sewing machine can thus be moved in the plane spanned by the two directions of movement. At the same time, the sewing machine is pivotally mounted on the cross-beam about an axis running through the needle axis, so that it can always adjust tangentially to the curvature of a seam to be sewn.

Nachteilig an dieser Anordnung ist, daß für das Werkstück und die das Werkstück haltenden Einrichtungen nur der Platz zwischen den Schienen zur Verfügung steht, wobei der Ab­stand der Schienen festliegt. Dadurch ist die Nähvorrichtung im wesentlichen nur für einen Zweck zu gebrauchen. Jede andere Aufgabe erfordert auch eine Neugestaltung des die Nähmaschine tragenden Gestells. Somit ist für jede neue Aufgabe eine Spezialanfertigung erforderlich, die den Preis für derartige Nähvorrichtungen erheblich in die Höhe treibt.A disadvantage of this arrangement is that only the space between the rails is available for the workpiece and the devices holding the workpiece, the distance between the rails being fixed. As a result, the sewing device can essentially only be used for one purpose. Any other task also requires a redesign of the frame supporting the sewing machine. For each new task, therefore, a special production is required, which drives up the price for such sewing devices considerably.

Der Erfindung liegt die Aufgabe zugrunde, eine Nähvorrich­tung der eingangs genannten Art anzugeben, die mit relativ geringfügigen und auf einfache Weise durchzuführenden An­passungsmaßnahmen für unterschiedliche Zwecke, d.h. für unterschiedlich geformte Werkstücke und unterschiedliche Nahtverläufe einsetzbar ist.The invention has for its object to provide a sewing device of the type mentioned, which with relatively minor and easy to carry out adaptation measures for different purposes, i.e. can be used for differently shaped workpieces and different seam courses.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Nähmaschine an einem Ende eines horizontalen Tragarms ange­ordnet ist, der an einer vertikalen Säule parallel zu seiner Längsrichtung verschiebbar geführt ist, und daß die Säule auf einem Schlitten steht, der senkrecht zur Verschieberich­tung des Tragarms an dem Grundgestell verschiebbar geführt ist.This object is achieved in that the sewing machine is arranged at one end of a horizontal support arm which is slidably guided on a vertical column parallel to its longitudinal direction, and that the column is on a carriage which is perpendicular to the direction of displacement of the support arm on the base frame is guided.

Die erfindungsgemäße Anordnung der Nähmaschine hat den Vor­zug, daß die Nähmaschine von einer Seite her vollkommen frei zugänglich ist. Zwischen dem Tragarm und dem die Säule tra­genden Grundgestell können Werkstückhalter beliebiger Form und Größe eingebaut oder eingeschoben werden. Die Nähmaschine kann bis zu einer vom Nähgutrand gemessenen Entfernung, die durch die lichte Öffnung des Nähmaschinengehäuses vorgege­ben ist, Nähte mit beliebigem Verlauf und beliebiger Rich­ tung nähen, in dem die Säule am Werkstück entlanggefahren bzw. der Tragarm an der Säule verstellt wird. Die gleiche aus dem Grundgestell, der Säule, dem Tragarm und der Näh­maschine bestehende Einheit kann durch Hinzufügen unter­schiedlicher Werkstückhalter zu unterschiedlichen Automaten ausgebaut werden.The arrangement of the sewing machine according to the invention has the advantage that the sewing machine is completely freely accessible from one side. Workpiece holders of any shape and size can be installed or inserted between the support arm and the base frame supporting the column. The sewing machine can sew up to a distance measured from the sewing material edge, which is predetermined by the clear opening of the sewing machine housing, with any course and any direction Sew the device by moving the column along the workpiece or adjusting the support arm on the column. The same unit consisting of the base frame, the column, the support arm and the sewing machine can be expanded to different machines by adding different workpiece holders.

Die vielseitige Verwendbarkeit der erfindungsgemäßen Näh­vorrichtung kann noch erheblich gesteigert werden, wenn die Nähmaschine an dem Tragarm um eine durch die Nadelachse ver­laufende Drehachse drehbar gelagert ist. Eine drehbare Lagerung der Nähmaschine um eine durch die Nadelachse ver­laufende Achse ist zwar auch bereits aus der DD-PS 53 544 bekannt. Jedoch ist dort die Nähmaschine nur um einen be­grenzten Winkel gegenüber der Quertraverse verschwenkbar. Eine Verschwenkbarkeit über diesen Winkel hinaus ist durch die die Verschiebung an der Traverse ermöglichende Lagerung der Nähmaschine ausgeschlossen. Dank der erfindungsgemäßen Anordnung der Nähmaschine an dem freien Ende des Tragarmes gibt es nichts, was die Drehbarkeit der Nähmaschine behin­dern könnte, so daß diese ggf. um 360° drehbar ist. Dadurch kann die Maschine beispielsweise stets so eingestellt wer­den, daß sie sämtliche Kanten eines Werkstückes umfährt, ohne daß dieses bewegt zu werden braucht, vorausgesetzt, daß das Werkstück nicht über den vom Verschiebeweg der Säule und vom Verschiebeweg des Tragarmes vorgegeben Bewe­gungsbereich der Nähmaschine hinausragt.The versatility of the sewing device according to the invention can be significantly increased if the sewing machine is rotatably mounted on the support arm about an axis of rotation extending through the needle axis. A rotatable mounting of the sewing machine about an axis running through the needle axis is already known from DD-PS 53 544. However, the sewing machine can only be pivoted there by a limited angle with respect to the crossbar. Swiveling beyond this angle is precluded by the mounting of the sewing machine which enables the movement on the crossbar. Thanks to the arrangement of the sewing machine according to the invention at the free end of the support arm, there is nothing that could hinder the rotatability of the sewing machine, so that it can possibly be rotated through 360 °. As a result, the machine can, for example, always be set so that it moves around all the edges of a workpiece without it having to be moved, provided that the workpiece does not protrude beyond the range of movement of the sewing machine, which is predetermined by the displacement path of the column and the displacement path of the support arm.

Gemäß einer besonders vorteilhaften Ausführungsform ist die Nähmaschine mit einer Schneidevorrichtung versehen, die ein unmittelbar neben der Nadel angeordnetes und synchrom mit dieser betätigbares Messer aufweist. Dadurch, daß die Nähmaschine stets in der gewünschten Nahtrichtung einge­ stellt werden kann, ist es nun auch möglich, parallel zur Naht das Werkstück zu schneiden. Damit entfällt nicht nur ein eigener Beschneidungsvorgang, sondern es ist damit auch ein exakter Abstand der Naht von dem geschnittenen Rand ge­währleistet.According to a particularly advantageous embodiment, the sewing machine is provided with a cutting device which has a knife which is arranged directly next to the needle and can be actuated synchronously with it. The fact that the sewing machine is always in the desired direction of sewing can be set, it is now also possible to cut the workpiece parallel to the seam. This not only eliminates the need for a separate trimming process, but also ensures that the seam is precisely spaced from the cut edge.

Weitere Merkmale und Vorteile der erfindungsgemäßen Nähvor­richtung ergeben sich aus den weiteren Unteransprüchen und der folgenden Beschreibung, welche in Verbindung mit den beigefügten Zeichnungen die Erfindung anhand von Aus­führungsbeispielen erläutert. Es zeigen:

  • Fig. 1 eine teilweise schematische Seitenansicht der erfindungsgemäßen Nähvorrichtung mit einer fest am Tragarm angeordneten Nähmaschine,
  • Fig. 2 eine teilweise schematische Ansicht der in Figur 1 dargestellten Vorrichtung in Richtung des Pfeiles A in Figur 1,
  • Fig. 3 eine Draufsicht auf einen Teil der Werkstück­auflage der in Figur 1 dargestellten Nähvor­richtung und
  • Fig. 4 eine der Figur 1 entsprechende Ansicht einer angewandelten Ausführungsform der erfindungs­gemäßen Nähvorrichtung mit drehbar gelagerter Nähmaschine.
Further features and advantages of the sewing device according to the invention result from the further subclaims and the following description, which explains the invention with reference to exemplary embodiments in conjunction with the accompanying drawings. Show it:
  • 1 is a partially schematic side view of the sewing device according to the invention with a sewing machine fixed to the support arm,
  • 2 is a partially schematic view of the device shown in Figure 1 in the direction of arrow A in Figure 1,
  • Fig. 3 is a plan view of part of the workpiece support of the sewing device shown in Figure 1 and
  • Fig. 4 is a view corresponding to Figure 1 of a modified embodiment of the sewing device according to the invention with rotatably mounted sewing machine.

Die in Figur 1 dargestellte Nähvorrichtung umfaßt ein Grund­gestell 10 mit einem im wesentlichen rechteckigen Rahmen 12, der auf Füßen 14 ruht. Der Rahmen 12 trägt zwei zueinander parallele Schienen 16, auf denen ein Schlitten 18 mittels geeigneter, nicht dargestellter Lager verschiebbar geführt ist. Der Antrieb des Schlittens erfolgt mit Hilfe eines an der Schlittenunterseite befestigten Motors 20, dessen Antriebsritzel 22 mit einer an dem Rahmen 12 angeordneten und parallel zu den Schienen 16 gerichteten Zahnstange 24 kämmt.The sewing device shown in Figure 1 comprises a base frame 10 with an essentially rectangular frame 12 which rests on feet 14. The frame 12 carries two to each other parallel rails 16, on which a carriage 18 is slidably guided by means of suitable bearings, not shown. The carriage is driven by means of a motor 20 fastened to the underside of the carriage, the drive pinion 22 of which meshes with a rack 24 arranged on the frame 12 and directed parallel to the rails 16.

Der Schlitten 18 trägt eine aus einem Reckteckprofil be­stehende Säule 26. Am oberen Ende der Säule 26 sind zwi­schen seitlichen Flanschen 28 parallel zur Säule 26 gerich­tete Führungsstangen 30 angeordnet, an denen mit Hilfe von Führungsbuchsen 32 (Figur 2) ein Trägerschlitten 34 verti­kal verstellbar geführt ist. Die Vertikalverstellung des Schlittens 34 erfolgt mit Hilfe eines Arbeitszylinders 36, der sich an einer säulenfesten Stütze 38 abstützt.The carriage 18 carries a column 26 consisting of a rectangular profile. At the upper end of the column 26, guide rods 30 are arranged between side flanges 28 and parallel to the column 26, on which a support carriage 34 is guided in a vertically adjustable manner by means of guide bushings 32 (FIG. 2) . The vertical adjustment of the slide 34 takes place with the aid of a working cylinder 36 which is supported on a column 38 fixed to the column.

An dem Trägerschlitten 34 ist ein langgestreckter Tragarm 40 in Richtung des Doppelpfeiles B, d.h. senkrecht zur Verschieberichtung des Schlittens 18 horizontal verschieb­bar geführt, wobei die Führung in beliebiger geeigneter Weise erfolgen kann und in Figur 2 nur symbolisch durch eine Schwalbenschwanzführung 42 angedeutet ist. Die Ver­stellung des Tragarmes in Richtung des Doppelpfeiles B erfolgt mit Hilfe eines an dem Trägerschlitten 34 befestig­ten Motors 44, dessen Antriebsritzel 46 mit einer an dem Tragarm 40 und parallel zu dessen Längsrichtung gerichteter Zahnstange 48 kämmt.On the support carriage 34 there is an elongated support arm 40 in the direction of the double arrow B, i.e. guided horizontally displaceably perpendicular to the direction of displacement of the carriage 18, the guidance being able to take place in any suitable manner and is only symbolically indicated in FIG. 2 by a dovetail guide 42. The adjustment of the support arm in the direction of the double arrow B takes place with the aid of a motor 44 fastened to the support slide 34, the drive pinion 46 of which meshes with a rack 48 directed at the support arm 40 and parallel to its longitudinal direction.

Der Tragarm 40 trägt an seinem einen freien Ende eine Näh­maschine, die mit ihrer Gehäuseoberseite hängend an dem Tragarm 40 befestigt ist.The support arm 40 carries at its one free end a sewing machine which is attached to the support arm 40 with its upper side hanging.

An dem Grundgestell 10 ist ferner mittels einer Stütze 52 eine Werkstückauflage 54 befestigt. Die Werkstückauflage 54 enthält eine zum Druchtritt der Nadel bestimmten, dem Naht­verlauf entsprechenden Schlitz 56. Dieser Schlitz dient nur dem Durchtritt der Nadel, nicht dagegen der Führung der Näh­maschine. Diese trägt jedoch an der Stichplatte einen der Nadel zugewandten Vorsprung 58, der beim Nähvorgang in den Schlitz 56 eingreift, um zu verhindern, daß das zu nähende Stoffteil von der Nadel in den Schlitz 56 hineingedrückt wird. Um die Nähmaschine 50 im vorliegenden Beispiel in die Nähposition zu bringen, muß sie also zunächst in Richtung auf die Werkstückauflage 54 verstellt und anschließend geringfügig angehoben werden, so daß der Vorsprung 58 in den Schlitz 56 eintaucht. Die Bewegung der Nähmaschine 50 entlang dem Schlitz 56 erfolgt dann durch eine Verschiebung des Schlittens 18 auf den Schienen 16 einerseits und eine Verschiebung des Tragarms 40 an der Säule 26 andererseits. Beide Bewegungen werden durch eine in der Figur 1 schema­tisch angedeutete elektronische Steuervorrichtung 58 ge­steuert.A workpiece support 54 is also fastened to the base frame 10 by means of a support 52. The workpiece support 54 contains a slot 56 which is intended for the passage of the needle and corresponds to the course of the seam. This slot serves only for the passage of the needle, not for guiding the sewing machine. However, this carries on the needle plate a projection 58 which faces the needle and engages in the slot 56 during the sewing process in order to prevent the fabric part to be sewn from being pressed into the slot 56 by the needle. In order to bring the sewing machine 50 into the sewing position in the present example, it must first be adjusted in the direction of the workpiece support 54 and then raised slightly so that the projection 58 dips into the slot 56. The movement of the sewing machine 50 along the slot 56 then takes place by a displacement of the carriage 18 on the rails 16 on the one hand and a displacement of the support arm 40 on the column 26 on the other hand. Both movements are controlled by an electronic control device 58 schematically indicated in FIG. 1.

Aus der bisherigen Beschreibung erkennt man, daß die aus dem Grundgestell 10, der Säule 26, dem Tragarm 40 und der Näh­maschine 50 bestehende Einheit mit Werkstückhalterungen oder Werkstückauflagen beliebiger Größe und Gestalt kombi­niert werden kann. Man erhält auf diese Weise eine Grundein­heit, die entsprechend den speziellen Kundenwünschen ohne großen Aufwand variiert werden kann.From the previous description it can be seen that the unit consisting of the base frame 10, the column 26, the support arm 40 and the sewing machine 50 can be combined with workpiece holders or workpiece supports of any size and shape. In this way, a basic unit is obtained which can be varied without great effort according to the special customer requirements.

Eine abgewandelte Ausführungsform ist beispielsweise in Figur 4 dargestellt, wobei gleiche Teile mit den gleichen Bezugszeichen versehen sind. Die in Figur 4 dargestellte Ausführungsform unterscheidet sich von der Ausführungsform gemäß Figur 1 dadurch, daß die Nähmaschine 50 an dem freien Ende des Tragarms 40 um eine durch die Nadelachse verlau­fende Achse drehbar gelagert ist. Der die Nähmaschine 50 tragende und in dem Tragarm 40 gelagerte Wellenstumpf 60 ist an der Oberseite des Nähmaschinengehäuses befestigt und trägt an seinem freien Ende ein Zahnrad 62, das mit dem Antriebsritzel 64 eines Elektromotors 66 kämmt, der seinerseits über eine Halterung 68 an dem Tragarm 40 be­festigt ist. Damit kann die Nähmaschine 50 ggf. um 360° gedreht werden. Das ermöglicht es, beispielsweise an einem Werkstück zunächst durch Verfahren des Schlittens 18 paral­lel zu einem Rand des Werkstückes zu nähen und anschließend nach einer Drehung der Nähmaschine 50 um ihre Achse durch Verschiebung des Tragarmes 40 entlang einer weiteren Kante des Werkstückes zu nähen.A modified embodiment is shown in FIG. 4, for example, the same parts being provided with the same reference numerals. The embodiment shown in Figure 4 differs from the embodiment 1 in that the sewing machine 50 is rotatably mounted on the free end of the support arm 40 about an axis extending through the needle axis. The stub shaft 60, which carries the sewing machine 50 and is supported in the support arm 40, is fastened to the top of the sewing machine housing and carries at its free end a gear wheel 62 which meshes with the drive pinion 64 of an electric motor 66, which in turn is connected to the support arm 40 via a holder 68 is attached. The sewing machine 50 can thus be rotated through 360 ° if necessary. This makes it possible, for example, to first sew on a workpiece by moving the carriage 18 parallel to an edge of the workpiece and then, after rotation of the sewing machine 50 about its axis, by sewing the support arm 40 to sew along another edge of the workpiece.

Die Nähmaschine 50 trägt bei der Ausführungsform gemäß Figur 4 ferner eine nur schematisch angedeutete Schneide­vorrichtung 70 mit einem Messer 72, das über ein Parallelo­grammgestänge 74 synchron mit der Nadel 76 der Nähmaschine auf und ab bewegbar ist und damit parallel zur genähten Naht das zu nähende Werkstück durchtrennt. Bei einer Drehung der Nähmaschine wird das Messer 72 angehoben, so daß es die Drehung der Nähmaschine um die Nadelachse nicht behindert. Damit ist ein nahtparalleler Schnitt in einem definierten Abstand von der Naht ohne einen weiteren Arbeitsvorgang ge­währleistet.In the embodiment according to FIG. 4, the sewing machine 50 also carries a cutting device 70, indicated only schematically, with a knife 72, which can be moved up and down synchronously with the needle 76 of the sewing machine via a parallelogram linkage 74 and thus cuts through the workpiece to be sewn parallel to the sewn seam . When the sewing machine rotates, the knife 72 is raised so that it does not hinder the rotation of the sewing machine about the needle axis. This ensures a parallel cut at a defined distance from the seam without any further work.

In Figur 4 ist als Ausführungsbeispiel auch ein Werkstück­träger 78 mit mehreren Werkstückauflageflächen 80 darge­stellt, der um eine vertikale Achse 82 drehbar an dem Grund­gestell 10 angeordnet ist. Der Werkstückträger 78 kann auch mehr als die dargestellten zwei Werkstückauflageflächen 80 enthalten. Diese Anordnung ermöglicht es nicht nur, die durch das Auflegen, Ausrichten und Klemmen der Werkstücken benötigen Totzeiten zu vermeiden, sondern erlaubt auch unter Umständen ein automatischen Zuführen und Abführen der Werk­stücke, da nunmehr auch Platz vorhanden ist, um entsprechende Zuführ- oder Abführeinrichtungen aufbauen zu können, die die Nähvorrichtung selbst nicht behindern.FIG. 4 also shows, as an exemplary embodiment, a workpiece carrier 78 with a plurality of workpiece support surfaces 80, which is arranged on the base frame 10 so as to be rotatable about a vertical axis 82. The workpiece carrier 78 can also have more than the two workpiece support surfaces 80 shown contain. This arrangement not only makes it possible to avoid the idle times required by placing, aligning and clamping the workpieces, but also under certain circumstances allows the workpieces to be fed and removed automatically, since space is now also available to set up appropriate feed or discharge devices who do not hinder the sewing device itself.

Claims (7)

1. Nähvorrichtung mit einer Nähmaschine (50), die auf einem Grundgestell (10) in zwei zueinander senkrechten Rich­tungen verstellbar gelagert ist, dadurch gekenn­zeichnet, daß die Nähmaschine (50) an einem Ende eines horizontalen Tragarms (40) angeordnet ist, der an einer vertikalen Säule (26) parallel zu seiner Längsrich­tung verschiebbar geführt ist, und daß die Säule (26) auf einem Schlitten (18) steht, der senkrecht zur Ver­schieberichtung des Tragarmes (40) an dem Grundgestell (10) verschiebbar geführt ist.1. Sewing device with a sewing machine (50) which is adjustably mounted on a base frame (10) in two mutually perpendicular directions, characterized in that the sewing machine (50) is arranged at one end of a horizontal support arm (40) which on a vertical column (26) is slidably guided parallel to its longitudinal direction, and that the column (26) stands on a carriage (18) which is slidably guided perpendicular to the direction of displacement of the support arm (40) on the base frame (10). 2. Nähvorrichtung nach Anspruch 1, dadurch gekenn­zeichnet, daß die Nähmaschine (50) an dem Trag­arm (40) um eine durch die Nadelachse verlaufende Achse drehbar gelagert ist.2. Sewing device according to claim 1, characterized in that the sewing machine (50) on the support arm (40) is rotatably mounted about an axis extending through the needle axis. 3. Nähmaschine nach Anspruch 2, dadurch gekenn­zeichnet, daß die Nähmaschine (50) mit einer an ihrer Gehäuseoberseite ansetzenden Welle (60) am Tragarm (40) drehbar aufgehängt ist.3. Sewing machine according to claim 2, characterized in that the sewing machine (50) is rotatably suspended on the support arm (40) with a shaft (60) which attaches to the top of its housing. 4. Nähvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Tragarm (40) an einem Schlitten (34) geführt ist, der seinerseits an der Säule (26) vertikal verstellbar geführt ist.4. Sewing device according to one of claims 1 to 3, characterized in that the support arm (40) is guided on a carriage (34) which in turn is guided vertically adjustable on the column (26). 5. Vorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die Nähmaschine (50) eine Schneidevorrichtung (70) mit einem unmittelbar neben der Nadel (76) angeordneten und synchron mit dieser betätigbaren Messer (72) aufweist.5. Device according to one of claims 2 to 4, characterized in that the sewing machine (50) has a cutting device (70) with a directly adjacent to the needle (76) and synchronously operable with this knife (72). 6. Nähvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Antrieb für die Verstellung des Tragarmes (40) relativ zu Säule (26) einen säulenfesten Motor (44) umfaßt, dessen Antriebs­ritzel (46) mit einer am Tragarm (40) angeordneten Zah­stange (48) kämmt.6. Sewing device according to one of claims 1 to 5, characterized in that the drive for the adjustment of the support arm (40) relative to column (26) comprises a column-fixed motor (44), the drive pinion (46) with one on the support arm (40 ) arranged rack (48) combs. 7. Nähvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Antrieb für die Verstellung der Säule (26) relatiy zum Grundgestell (10) einen schlittenfesten Motor (20) umfaßt, dessen Antriebs­ritzel (22) mit einer gestellfesten Zahnstange (24) kämmt.7. Sewing device according to one of claims 1 to 6, characterized in that the drive for the adjustment of the column (26) relative to the base frame (10) comprises a carriage-fixed motor (20), the drive pinion (22) with a rack (24 ) combs.
EP19890107276 1988-06-06 1989-04-21 Sewing apparatus Withdrawn EP0345448A1 (en)

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DE8807354U DE8807354U1 (en) 1988-06-06 1988-06-06 Sewing device
DE8807354U 1988-06-06

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD53544A (en) *
GB209696A (en) * 1922-12-02 1924-01-17 Union Special Machine Co Improvements in sewing machines
US3097461A (en) * 1963-07-16 Figure
US3691968A (en) * 1970-07-20 1972-09-19 Raymond D Schnepf Sack closing and sewing machine
DE3016676A1 (en) * 1980-04-30 1981-11-05 Pfaff Industriemaschinen Gmbh, 6750 Kaiserslautern FACILITIES FOR SIMULTANEOUSLY SEAMLING TWO SEALING MATERIALS

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD53544A (en) *
US3097461A (en) * 1963-07-16 Figure
GB209696A (en) * 1922-12-02 1924-01-17 Union Special Machine Co Improvements in sewing machines
US3691968A (en) * 1970-07-20 1972-09-19 Raymond D Schnepf Sack closing and sewing machine
DE3016676A1 (en) * 1980-04-30 1981-11-05 Pfaff Industriemaschinen Gmbh, 6750 Kaiserslautern FACILITIES FOR SIMULTANEOUSLY SEAMLING TWO SEALING MATERIALS

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