DE1660839C

DE1660839C - Sewing unit for sewing darts

Info

Publication number: DE1660839C
Authority: DE
Inventors: Konrad 4800 Bielefeld. B3 If 1-20 Pollmeier
Original assignee: Dürkoppwerke GmbH, 4800 Bielefeld
Publication date: 1971-12-23

Description

XX 22

Die Erfindung betrifft eine Nähunlage, die für die ihren Antrieb von einem unterhalb der Tischplatte 2 rationelle Fertigung von Abnähern in den Zuschnitt- gelagerten Kupplungsmotor erhält und deren Stichteilen von Oberbekleidungsstücken od. dgl. entwickelt bildewerkzeuge bei Stillsetzung der Maschine positioworden ist und die mit einer das Arbeitsstück auf der niert, d. h., in vorbestimmter Stellung angehalten Nähtischplatte an der Stichbildestelle einer Näh- 5 werden. Als Vorschubvorrichtung für -las Arbeitsmaschine vorbeiführenden, dem vorgesehenen Naht- stück findet eine mechanisch bewegte Vorschubverlauf entsprechend geformten, mechanisch beweg- schiene 4 Anwendung, die gerade oder leicht geten Vorschubschiene ausgestattet ist. krümmt sein kann, je nachdem, welchen Verlauf die Die Anfertigung von Abnähernähten erfordert nach zu erzeugende Abnähernaht aufweisen soll. Die Vorder üblichen Arbeitsmethode den Einsatz besonders io schubschiene 4, deren Sohle mit einem griffigen ausgebildeter, geschickter Arbeitskräfte, da von der Material, wie Schaumstoff oder Plüsch, belegt ist, ist einwandfreien Ausführung dieser Nähte der korrekte an einem Schlitten 5 angelenkt, der von einer Schrau-Sitz eines Bekleidungsstückes abhängt. Besonders die benspindel 6 angetrieben in einer Führungsschiene 7 Abnäherspitze muß mit großer Sorgfalt ausgeführt verschiebbar gelagert ist. Ein Druckluftmotor 8 werden, um eine Faltenbildung zu vermeiden. Es sind 15 drückt die Vorschubschiene 4 über einen Winkelauch schon t ölvorrichtungen an Nähanlagen be- hebel 9 auf das zu transportierende Arbeitsstück kannt, welche das Einlegen des Arbeitsstückes und nieder. Gesteuert wird die Nähanlage von einer das Einführen desselben in die Nähmaschine verein- Schaltzentrale 10, die Mittel zur Folgesteuerung der fachen sollen, damit diese Arbeit auch von weniger einzelnen Bewegungsabläufe, welche überwiegend von qualifizierten Arbeitskräften in befriedigender Weise so pneumatischen Servomotoren ausgeübt werden, entbewerkstelligt werden kann. Die bekannten Hilfs- hält.The invention relates to a sewing pad which, for its drive from a below the table top 2 efficient production of darts in the cut-stored clutch motor and their stitch parts of outer clothing od. that is, stopped in a predetermined position Sewing table top at the stitch formation point of a sewing 5. A mechanically moved feed path correspondingly shaped, mechanically moving rail 4, which is equipped with a straight or gently moving feed rail, is used as the feed device for the work machine leading past the intended seam piece. can be curved, depending on the course of the The production of dart seams requires the dart seam to be produced. The front usual working method the use especially io Schubschiene 4, whose sole with a non-slip trained, skilled workers, as the material, such as foam or plush, is covered flawless execution of these seams the correct articulated on a carriage 5, which depends on a screw seat of an item of clothing. The lower spindle 6 in particular is driven in a guide rail 7 Dart point must be carried out with great care so that it can be moved. An air motor 8 to avoid wrinkling. There are 15 pushes the feed rail 4 over an angle also already t oil devices on sewing systems lever 9 on the work piece to be transported knows what the insertion of the workpiece and down. The sewing unit is controlled by one the introduction of the same into the sewing machine- control center 10, the means for sequential control of the should fold so that this work can also be done by less individual movement sequences, which are predominantly of Skilled workers can be exercised in a satisfactory manner so pneumatic servo motors can be rendered redundant. The well-known auxiliary stops.

Vorrichtungen erleichtern zwar das Einlegen eines Wie aus Fig. 1 hervorgeht, ist die Nähmaschine3 Arbeitsstückes, ihre Beschickung erfordert aber im- etwa in der Mitte der rechteckigen Tischplatte 2 mit mer noch zu viel Zeit, so daß sich ihr Einsatz mei- ihrer Hauptachse senkrecht zur langen Seite der stens nicht lohnt. 35 Tischplatte angeordnet. Die Vorschubschiene 4 liegt Der Erfindung liegt die technische Aufgabe zu- etwa parallel zur Tischplattenlängskante und ihre gründe, das Falzen der Arbeitsstücke im Abnäher- Vorschubbewegung verläuft annähernd rechtwinklig bereich sowie das Zured1tlege.1i und Nähen der Ab- zur Nähmaschinenhauptachse, wobei sie im Bereich näher zu mechanisieren, um damit die Voraussetzung der Stichbildestelle mit einem Führungsorgan 11 zufür eine rationelle Arbeitsweise der Nähanlage zu 30 sammenwirkt, welches in die Längsnut 4' der Vorschaffen. Zur^Aufgabenlösung wird erfindungsgemäß schubschiene 4 eingreift. In der gezeichneten Grundbei einer Nähanlage der eingangs beschriebenen Art oder Einlegestellung befindet sich die Vorschubvorgeschlagen, daß vor der Nähtischplatte eine in schiene 4 ^;n der Vorderansicht rechts von der Näh-Richtung auf die Vorschubschiene verschiebbare maschine 3, ihre Bewegungsrichtung beim Transport Falzschiene in einer Ebene angeordnet ist, die zwi- 35 eines Arbeitsstückes verläuft also von rechts nach links, sehen der Ebene der Tischplattenauflagefläche und Vor der Nähtischplatte 2 in der Ebene der Tischder Unterseite der Vorschubschiene in ihrer angeho- plattenauflagefläche, rechts von der Nähmaschine 3, benen Stellung liegt, daß die Falzkante der Falz- ist eine kleinere Tischplatte 12 angeordnet, die eine schiene bezüglich der Vorschubschiene winklig ein- Falzschiene 13 trägt. Diese Tischplatte 12 ruht auf stellbar ist und daß hinter der Vorschubschiene eine 40 zwei Stangen 12', die in Führungen 14, welche an dei auf und ab bewegbare Nadelbarre zum Fixieren des Unterseite der Nähtischplatte 2 angebracht sind, verArbeitsstückes vorgesehen ist, deren Nadeln fluch- schiebbar und. um eine vertikale Achse 15 schwenktend mit schlitzartigen Ausnehmungen an der Falz- bar gelagert sind, so daß die an ihr angebrachte Falzkante der Falzschiene angeordnet sind. Die Falz- schiene 13 winklig zur Vorschubschiene 4 eingestellt schiene ist vorzugsweise an einer mittels einer Servo- 45 werden kann. Die Winkelstellung ist an einer Skala vorrichtung horizontal verschiebbaren und um eine 16 ablesbar. Die Tischplatte 12 kann mittels de? vertikale Achse schwenkbaren Tischplatte ange- Handgriffes 12" verstellt werden, wobei sie um die bracht, deren Winkelstellung zur Vorschubschiene an Achse 15 schwenkt, die zentrisch zur Nadelstangeneiner Skala ahlesbar ist. achse der Nähmaschine 3 verläuft. Der Schwenkbe-Devices facilitate the insertion of a work piece, as can be seen from FIG long side of the least is not worth it. 35 table top arranged. The feed rail 4 is the technical task of the invention is about parallel to the table top longitudinal edge and its reasons, the folding of the work pieces in the dart feed movement runs approximately at right angles as well as the Zured1tlege.1i and sewing the off- to the sewing machine main axis, where they are closer in the area to mechanize, so that the prerequisite of the stitch formation point with a guide member 11 for a rational operation of the sewing system to 30 interacts, which in the longitudinal groove 4 'of the pre-. To solve the problem, slide rail 4 is engaged according to the invention. In the basic drawing of a sewing system of the type or insertion position described at the outset, the feed proposed is that in front of the sewing table top a rail 4 ^; In the front view to the right of the sewing direction on the feed rail movable machine 3, its direction of movement during transport folding rail is arranged in a plane that runs between a work piece so from right to left, see the plane of the table top support surface and in front of the sewing table top 2 In the plane of the table of the underside of the feed rail in its raised-plate support surface, to the right of the sewing machine 3, lies a lower position that the folding edge of the fold is a smaller table top 12 which carries a rail at an angle with respect to the feed rail. This table top 12 rests on is adjustable and that behind the feed rail a 40 two rods 12 ', which are provided in guides 14, which are attached to the needle bar that can be moved up and down for fixing the underside of the sewing table top 2, whose needles curse sliding and. are mounted on the folding bar pivoting about a vertical axis 15 with slot-like recesses, so that the folding edge of the folding rail attached to it are arranged. The folding rail 13 is set at an angle to the feed rail 4. The rail is preferably mounted on a servo 45. The angular position is horizontally displaceable device on a scale and readable by 16. The table top 12 can by means of de? The vertical axis of the swiveling table top can be adjusted by means of the handle 12 ", the angular position of which swivels to the feed rail on the axis 15, which can be read centrally to the needle bar on a scale. The axis of the sewing machine 3 runs.

Um beim Einführen des Arbeitsstückes in die so reich ist durch Anschläge begrenzt. Vorrichtung eine scharfe Umbruchkante zu erzielen, Oberhalb der Nähtischplatte 2, vor der Vorschubist in weiterer Ausbildung der Erfindung vorgesehen, schiene 4, befindet sich ein Falzblech 17, welches aus vor der Vorschubschiene ein Falzblech anzuordnen, einer L-Profilschiene und einem Federblech besteht welches mittels einer Servnvorrichtung gegen Feder· Das Falzblech 17 ist an zwei Armen 18 befestigt, die Wirkung auf die Nähtischplatte so weit absenkbar ist, 5$ auf an der Nähtischplatte 2 angebrachten Blattfederr daß ein Spalt für den Durchtritt der Falzschiene mit 19 ruhen und die untereinander durch einen Quer dem Arbeitsstück verbleibt. ' stab 20 verbunden sind. Die Blattfedern 19 halten da: Ein Ausfuhrungsbeispiel der Erfindung wird nach- Falzblech 17 in einer oberen von der Nähtischplatte 1 folgend an Hand der Zeichnungen näher erläutert. abgehobenen Lage, aus der es mittels eines Druck Es zeigt 60 luftmotors 21 nach unten, auf die Tischplatte zu F i g. I eine schaubildliche Gesamtansicht der Näh* niedergedruckt werden kann. In der unteren Lage da anlage, Falzbleches 17 ist zwischen dem Falzblech und de F i g. 2 eine teilweise Seitenansicht, Tischplattenauflagefläche nur ein enger Spalt vor F i g. 3 eine Detailansicht der Stichbildestellc, handen, durch den die Falzschicne 13 mit einem auf F i g. 4 eine teilweise Vorderansicht und 65 gelegten Arbeitsstück hindurchgeschoben wird. De Fig. S die Abbildungeines Arbeitsstückes. Spalt wird so eng gewählt, daß das Fedcrblech de Auf einer von einem Ständer I getragenen Näh- Falzblcches 17 elastisch auf das Arbeitsblech aufliegt tischplatte 2 ist eine Nähmaschine 3 gelagert, die Die Fulzschiene 13 schiebt bei ihrer VorwärtsbeIn order to insert the workpiece in the so rich is limited by stops. Device to achieve a sharp break edge, Above the sewing table top 2, in front of the feed is provided in a further embodiment of the invention, rail 4, there is a folding plate 17, which consists of a folding plate to be arranged in front of the feed rail, an L-profile rail and a spring plate which is made by means of a serving device against spring The folding plate 17 is attached to two arms 18, the effect on the sewing table top can be lowered so far that a gap for the passage of the folding rail with 19 rests and the one below the other through a Remains across the workpiece. 'rod 20 are connected. The leaf springs 19 hold there: An exemplary embodiment of the invention is explained in more detail after folding sheet 17 in an upper of the sewing table top 1 following with reference to the drawings. lifted position from which it is by means of a pressure It shows 60 air motor 21 down, on the table top to F i g. I a diagrammatic overall view of the sewing * can be printed. In the lower layer there plant, folding plate 17 is between the folding plate and de F i g. FIG. 2 shows a partial side view, the table top support surface only a narrow gap in front of FIG. 3 shows a detailed view of the stitch formation system, through which the folded sheet 13 is connected to a FIG. 4 is a partial front view and 65 placed work piece is pushed through. The figure 5 shows the illustration of a work piece. Gap is chosen so tight that the Fedcrblech de On one carried by a stand I sewing Falzblcches 17 rests elastically on the work sheet table top 2, a sewing machine 3 is mounted, which the Fulzschiene 13 pushes in their Vorwärtsbe

Claims

I 660 839I 660 839

Move the work piece under the folding sheet 17 and on the axis of the angle lever 9, which pushes the lifted feed rail 4 so far forward Gcschiene 4 protrudes, depending on the upstream, one arm of which is connected to a compressed air motor selected angular setting of the folding rail 13, ie, 5 Y) and whose other arm is a corresponding to the desired dart depth. In the strip bar 37 carries. This has the task of piercing the arsenic section of the work piece, after inserting it into a needle bar 23 by means of the folding bar 13 ddn22 and fixing the work piece and from the feed rail 4 on the work piece on the sewing table top 2. Sewing table top 2 has been clamped from the table so that the needles 22 only penetrate into the work piece 12 and the folding rail 13 to aim. The gene is the folding rail 13 in the region of its folding edge stripping rod 37 is actuated when the table 12 is provided with slot-like recesses 13 'which gradually increase in depth with the folding rail 13 in its starting position from left to right. measured Fig. 1 has returned. The stripped This different depth of the recesses 13 'work piece hangs on the front edge of the Länuskante hangs down with the pivoting of the folding rail 13 15 sewing table top 2 and the table top 12 is free for a new work piece opposite the table top 12 to which it is attached , together. By pivoting the folding rail, the operation of the sewing system is as follows: 13 becomes the angle of the dart, and thus its depth Length of the recess 12 ″ in a corresponding angular position 13 ′ of different sizes. Has been placed, placed as an aid

The already mentioned needle bar 23 will be attached to the table top 12 by a stop springs 24 carried, which can be attached to the sewing table top 2, in the form of a suitably cut are brought. The leaf springs 24 hold the needle strip sheet 38. This sheet can be very simple 23 in an upper position in which their needles 22 of 25 by placing permanent magnets 39 on the the sewing table top are lifted off. A compressed air-provided place should be kept. The operating motor 25 pushes the needle bar 23 against the person now pushes slightly against the front edge of the Effect of the leaf springs 24 downwards as soon as the table top 12, creating a contact for the Actuate folding rail 13 has introduced a workpiece. The supply of a compressed air motor is closed, which the Both compressed air motors 21 and 25 are on a table top 12 in the direction of the sewing table top 2 Angle plate 26 attached, which moves on the sewing table and the work piece is screwed under the folding plate 2. sheet 17 and the feed rail 4 through into the

Because the needle bar 23 advances the work piece in the correct position. At the end of the feeder Can only insufficiently fix stitch formation, movement is the needle bar 23 by means of the pressure on the feed rail 4 in the area of the stitch 35 air motor 25 is moved downwards, with its needles Form the sewing machine 3 a presser foot 27 in 22 grasp the workpiece and place it on the sewing table Mounted so that it can be moved in height, fix it by means of a plate 2. Once that's done, move on Compressed air motor 28 the work piece on the stitch itself the table top 12 with the folding rail 13 again plate depressed, regardless of the loading back to the starting position, and as soon as they impact of the feed rail 4. This pusher 40 area of the feed rail 4 has left, will foot 27 is depressed as soon as the fair rail is lowered by means of the compressed air motor 8, dial 13 has introduced a work piece, while the front renders, on the other hand, the compressed air motor 21 the case Slide 4 only lowered onto the work piece sheet 17 and the air motor 25 the needle bar when the folding rail 13 releases into its starting position 23, so that it is supported by the leaf springs 19 sition has decreased. 45 or 24 can be ventilated. The stripping rod 37 strikes

In the normal execution of the darts is now still on the work table 12 earn Dart fold approximately symmetrical to the dart-remaining section of the work piece downwards ironed out. In some cases, however, it is no longer necessary, and at the same time the carriage 5 to cut open the dart, and to this movement to the work piece on the stitch pattern The purpose is to guide the sewing machine 3 past the sewing machine 3 with a conventional 50. With the beginning Edge trimming knife 29 equipped, which selective feed of the work piece is also the can be used wisely. Another type of sewing machine 3 switched on, its mode of operation Dart design as shown in FIG. 5 is controlled by microswitches or photocells light, provides that together with the dart seam during the sewing process the Bedicnungs a band about the thickness of the work piece with 55 people already a new work piece at the table is sewn on. The dart fold is then placed after the plate 12, so that the system immediately wiedei one side and the folded tape can be loaded after the other when sewing is finished The side is ironed over, making the dart a larger det and the feed rail in its starting position Pretending width, as it has returned in some cases. It thus results in an approximate wishes is. For the feeding of this tape is, 60 continuous work process, like F i g. 4 shows an insertion sleeve 31 attached to the throat plate 30 of the sewing machine 3, through the claims: the belt 33 running off a supply roll 32 is guided. The tape is placed on the lower ropes of the ar- 1. Sewing unit for sewing darts in the dei workpiece supplied and at the same time with the cutting 65 pieces of clothing or dei sewn attached to the workpiece. A special same, with a work piece on de Separating knife 34 cuts the tape at the end of a sewing table top at the stitch formation point Operation from. Sewing machine passing, the seam vorhu

appropriately shaped, mechanically moved feed rail, marked by * net. dall in front of the sewing table top (2) one in the direction on the feed rail (4) displaceable folding rail (13) is arranged in a plane, S between the plane of the table top support surface and the underside of the feed rail (4) in its raised position is that the FaIzkantc the folding rail (13) is angularly adjustable with respect to the feed rail (4) and that Behind the feed rail (4) a needle bar (23) that can be moved up and down to fix the work piece is provided, the needles (22) of which are aligned with slot-like recesses (13 ') are arranged on the folding edge of the folding rail (13).

2. Sewing type position according to claim I, characterized in that that the folding rail (13) can be displaced horizontally on one by means of a scrvo device and about a vertical axis (15) ao pivotable table top (12) is attached.

whose angular position to the feed rail (4) can be read on a scale (16).

3. Sewing system according to claims I and 2, characterized in that a folding plate (17) is arranged in front of the feed rail (4), which by means of a servo device (21) against spring action on the sewing table top (2) so far can be lowered so that a gap remains for the seam rail (13) with the workpiece to pass through.

4. Sewing system according to claim 1 to 3, characterized in that between the folding rail (13) and the front edge of the sewing table top (2) a Abstrcifstartge movable in a vertical plane (37) is provided.

5. Sewing system according to claim 1 to 4, characterized in that the feed rail (4) on at its end facing the stitch formation point of the sewing machine (3) a servo device direction (28) on the work piece lowerable presser foot (27) carries.

For this purpose 2 sheets of drawings