EP1295977A2 - Embroidery machine, particularly of the Schiffli type - Google Patents

Embroidery machine, particularly of the Schiffli type Download PDF

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Publication number
EP1295977A2
EP1295977A2 EP02405688A EP02405688A EP1295977A2 EP 1295977 A2 EP1295977 A2 EP 1295977A2 EP 02405688 A EP02405688 A EP 02405688A EP 02405688 A EP02405688 A EP 02405688A EP 1295977 A2 EP1295977 A2 EP 1295977A2
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EP
European Patent Office
Prior art keywords
thread
thread roller
shaft
drive
roller
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Granted
Application number
EP02405688A
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German (de)
French (fr)
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EP1295977A3 (en
EP1295977B1 (en
Inventor
Franz Lässer
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Franz Laesser AG
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Franz Laesser AG
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Publication of EP1295977A2 publication Critical patent/EP1295977A2/en
Publication of EP1295977A3 publication Critical patent/EP1295977A3/en
Application granted granted Critical
Publication of EP1295977B1 publication Critical patent/EP1295977B1/en
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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
    • D05C11/08—Thread-tensioning arrangements
    • D05C11/12—Rollers

Definitions

  • the invention relates to an embroidery machine, in particular a ship embroidery machine a variety of needles, a thread roller or one with thread roller rollers coupled thread roller shaft, the front thread from the thread spool over the thread roller or the thread roller roller runs to the needle, one Drive device which to the thread roller or the thread roller shaft Applies torque that the rotation of the thread roller or Thread roller rolls supported by thread tension, in order to avoid the resultant thread tension Limit tension in the front thread, or the thread roller or the Thread roll shaft, controlled by a control unit, drives the one for the stitch to deliver required front thread practically tension-free.
  • the drive device is advantageously below the needle carriage Machine frame arranged.
  • the drive device is there for service work easily accessible, which is not possible due to the limited space in the needle carriage would.
  • An advantageous embodiment provides that the drive train from the Drive device for thread roller or thread roller shaft a drive shaft and includes a transmission. This enables an advantageous, the tight Construction adapted to the space in the area of the thread spools.
  • the drive shaft expediently leads close to the front of the machine past the machine frame. This creates favorable space for the Thread spools created. But it would also be possible to use a drive shaft To drill a hole in the machine frame.
  • the gearbox can be used End of the drive shaft arranged bevel gear, which in a bevel gear engages which is arranged on the thread roller or the thread roller shaft. at the bevel gear arranged on the thread roller shaft can be the same Acting bevel gear, which also serves to drive a thread roller.
  • the transmission includes one at the end of the Drive shaft arranged gear that meshes with a gear on a Shaft sits, on which a bevel gear is arranged, which engages in a bevel gear, which is arranged on the thread roller or the thread roller shaft.
  • Shuttle embroidery machines have a variety of embroidery sites, each of which embroidering point of embroidery leads the front thread from the bobbin to the needle.
  • Fig. 1 only three of the many thread roller rollers 13 can be seen, over which the front thread to be led.
  • FIG. 3 shows how the front thread 11, also called needle thread, of the bobbin 12 over the thread roller 13 to the small thread conductor 14 and from there is guided over the large thread guide 15 to the needle 16.
  • the reference number 17 is the so-called needle carriage arranged on the machine frame 19 referred to, which contains these embroidery organs.
  • a ship embroidery machine has a large number of embroidery points. So there are also a large number of thread spools 12, thread roller rollers 13, needles 16, etc. available. When you turn on the embroidery point, the thread roller 13, too Called thread brake, via the bevel gears 40, 36 with the thread roller shaft 33 coupled, as described for example in EP 0 911 437.
  • the drive device 25 is preferably one which to the thread roller shaft 33 applies a torque which causes the rotation of the Thread roller rollers 13 supports when thread tension occurs on this. Since the Front threads 11 are wound around the thread roller rollers 13, these are at Occurrence of tension on the front threads turned, so that the thread roller shaft 33 is rotated. As Fig.1 shows, are at the ends of the Thread roller shaft 33, the thread roller brake 38 is arranged.
  • the shaft 33 will therefore often referred to as a brake shaft.
  • the drive device 25 has a motor 35 and a differential gear 27.
  • the shaft 29 can be driven by means of the differential gear 27.
  • the shaft 29 is the power transmission via a freewheel hub 28 to the gear 30. This engages in the gear 31, which sits on a shaft 32 on the other End of the bevel gear 34 is arranged.
  • the bevel gear 34 meshes with the bevel gear 36, that sits on the thread roller shaft 33. With this gearbox you can Drive device 25 a supporting torque to the thread roller shaft 33 create and so the emergence of an excessive tension in the needle threads 11 to avoid.
  • the design of the drive device 25 can in principle be as shown in FIG EP 0 795 638 is described, so that for more details on this Reference can be made.
  • Drive device 25 from the motor 35 and the differential gear 27.
  • Der Motor 35 drives a pulley 41 via a toothed belt (not shown), which is connected to the gear 45.
  • the gear 45 is the first Sun gear of the differential gear.
  • the planet gears 47 consist of two Gears 48,49, which are firmly connected.
  • the gear 48 is with the first sun gear 45 and gear 49 meshing with second sun gear 51, which is connected to the shaft 29.
  • the shaft 29 via the gears 30,31,34 and 36 supporting torque to the thread roller shaft 33.
  • This Transmission takes place approximately in the middle of the thread roller shaft 33.
  • the Drive device 25 generated torque assisted drive the Thread roller shaft 33 counter to the braking force of the thread brakes 38, which at the Ends of the thread roller shaft 33 are arranged. That on the thread roller shaft 33 Supporting torque exerted can be applied with the brake 53, of the type shown in FIG the brake shoes 52 can be seen more or less adjusted.
  • the Freewheel hub 28 also enables thread roller shaft 33 to move further or thread roller by thread pull alone if none of the drive device 25 supporting torque more on the thread roller shaft 33 or thread roller is transmitted.
  • the embroidery machine has a multiplicity of needles 16, to which the needle thread 11 from the thread spools 12 runs over the thread roller 13. If thread tension arises, so causes the tension arising in the threads 11 to rotate Thread roll rollers 13. These act on the bevel gears 40 Thread roller shaft 33 distributed bevel gears 36 and rotate them. This Rotational movement is supported by a torque of the drive device 25. This is expediently designed so that the delivered torque alone is not sufficient to rotate the thread roller shaft 33, so that only one rotation takes place when the thread is sufficiently strong.
  • the supportive Torque is applied approximately in the middle of the thread roller shaft 33.

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

Abstract

A shuttle-operated embroidery assembly has numerous needles (16) to which the thread (11) feeds from spools (12) via rollers (13). Thread tension drives the rollers and the conical wheels (36) distributed along the roller shaft (33) via a first set of conical wheels (40). The shaft (33) rotation is supported by a drive unit (25), the torque esp. being applied at approx. the shaft (33) mid-point. The drive unit (25) is located beneath the needle carriage (17) on the machine frame (19). The drive train from the drive unit (25) to the shaft (33) incorporates a drive shaft (29) and a gear (30, 31, 34, 36). The drive shaft (29) is located on the front of and passes through a hole in the machine frame. The gear unit has a first conical gear wheel which engages with a second conical gear wheel, which is arranged on the thread roller or thread roller shaft.

Description

Die Erfindung betrifft eine Stickmaschine, insbesondere Schifflistickmaschine, mit einer Vielzahl von Nadeln, einer Fadenwalze oder einer mit Fadenwalzenrollen gekuppelten Fadenwalzenwelle, wobei der Vorderfaden von der Fadenspule über die Fadenwalze oder die Fadenwalzenrolle zur Nadel verläuft, einer Antriebsvorrichtung, welche an die Fadenwalze oder die Fadenwalzenwelle ein Drehmoment anlegt, welches die Drehung der Fadenwalze bzw. der Fadenwalzenrollen bei Fadenzug unterstützt, um die bei Fadenzug entstehende Spannung im Vorderfaden zu begrenzen, oder die Fadenwalze oder die Fadenwalzenwelle, gesteuert durch eine Steuereinheit, antreibt, um den für den Stich benötigten Vorderfaden praktisch spannungsfrei zu liefern.The invention relates to an embroidery machine, in particular a ship embroidery machine a variety of needles, a thread roller or one with thread roller rollers coupled thread roller shaft, the front thread from the thread spool over the thread roller or the thread roller roller runs to the needle, one Drive device which to the thread roller or the thread roller shaft Applies torque that the rotation of the thread roller or Thread roller rolls supported by thread tension, in order to avoid the resultant thread tension Limit tension in the front thread, or the thread roller or the Thread roll shaft, controlled by a control unit, drives the one for the stitch to deliver required front thread practically tension-free.

Im Werk von Schoener, Spitzen, Enzyklopädie der Spitzentechniken, Leipzig 1980, wird ab Seite 308 die Entwicklung und die Funktion der Stickmaschinen beschrieben. Bezüglich der Schiffchenstickmaschinen wird ausdrücklich erwähnt, dass alle für die Stichbildung erforderlichen Bewegungselemente, wie das Einstechen und Zurückgehen der Nadeln, das Durchschwingen der Schiffchen, das Zuleiten, Anziehen oder Bremsen des Vorderfadens, das Andrücken des Stickbodens im Moment der Stichbildung sowie das Verschieben des Stickbodens ihre besonderen Mechanismen haben, die durch eigene Steuerungseinrichtungen betrieben werden. Es sind dies (Seite 312):

  • 1. der Nadelantrieb,
  • 2. der Schiffchenantrieb,
  • 3. die Antriebe für die beiden Fadenleiter,
  • 4. der Stoffdrückerantrieb und
  • 5. die Gattersteuerung.
    • In the work of Schoener, Spitzen, Encyclopedia of Lace Technologies, Leipzig 1980, the development and function of the embroidery machines is described from page 308 onwards. With regard to shuttle embroidery machines, it is expressly mentioned that all movement elements required for stitch formation, such as inserting and retracting the needles, swinging through the shuttle, feeding, tightening or braking the front thread, pressing the embroidery base at the moment of stitch formation and moving the embroidery base have their special mechanisms that are operated by their own control devices. These are (page 312):
  • 1. the needle drive,
  • 2. the shuttle drive,
  • 3. the drives for the two thread conductors,
  • 4. the presser drive and
  • 5. the gate control.

    • Es folgt dann ab Seite 320 eine Beschreibung des Stichbildungsvorgangs, wobei ersichtlich ist, dass die Vorderfäden über die Fadenwalze verlaufen. Die Vorderfäden aller Stickstellen sind also um die Fadenwalze geschlungen. Wird somit beim Sticken Vorderfaden benötigt, so entsteht Spannung in den Vorderfäden, welche die Fadenwalze in Drehung versetzt. Eine mit der Fadenwalze gekoppelte Fadenwalzenbremse sorgt dafür, dass die Walze nicht weiterdreht, wenn der Zug an den Vorderfäden aufhört, und ermöglicht für die Stichbildung die nötige Vorderfadenspannung.A description of the stitch formation process follows from page 320, whereby it can be seen that the front threads run over the thread roller. The front threads all embroidery points are wrapped around the thread roller. So when embroidering Front thread needed, so tension in the front threads arises, which the Thread roller set in rotation. One coupled to the thread roller Thread roller brake ensures that the roller does not continue to turn when the train is on stops the front threads, and enables the necessary for stitch formation Front thread tension.

    Wenn aber nur mit wenigen Stickstellen gestickt wird, muss die Fadenwalze durch wenige Fäden in Bewegung versetzt werden, wobei in diesen Fäden eine hohe Spannung entstehen kann, die zum Reissen von Fäden und/oder Brechen von Nadeln führt. In Erkenntnis dieses Problems ist bereits im Jahre 1922 in der GB 177 317 vorgeschlagen worden, die Fadenwalze bei jedem Stich durch einen Antriebsmechanismus positiv anzutreiben. Ein entsprechender Vorschlag findet sich auch in der EP 0 666 351. In beiden Fällen wird die Fadenwalze an einem ihrer Enden angetrieben. Statt die Fadenwalze positiv anzutreiben, sieht die EP 0 795 638 vor, die durch Fadenzug verursachte Drehung der Fadenwalze durch ein Drehmoment, das allein nicht ausreicht die Fadenwalze entgegen der Bremskraft der Fadenwalzenbremse anzutreiben, zu unterstützen. Dieses Verfahren ist unter der Bezeichnung "Servofeed" bekannt.But if you only embroider with a few embroidery points, the thread roller must pass through few threads are set in motion, a high one in these threads Tension can arise, causing tearing and / or breaking of threads Leads needles. Recognizing this problem in 1922 GB 177 317 has proposed the thread roller with each stitch by one Drive mechanism to drive positive. A corresponding proposal can be found also in EP 0 666 351. In both cases, the thread roller is at one of its ends driven. Instead of driving the thread roller positively, EP 0 795 638 provides that rotation of the thread roll caused by thread tension by a torque which the thread roller alone is not sufficient against the braking force of the To drive the thread roller brake. This procedure is under the Designation "Servofeed" known.

    Wie beispielsweise in der EP 0 601 343 ausgeführt wird, ist bei bekannten Grossstickmaschinen ein Hauptmotor mit einer Hauptantriebswelle angeordnet. Auf dieser Hauptantriebswelle sind Kurvenscheiben für die verschiedenen Stickwerkzeug-Antriebe befestigt. Durch Kurvenscheiben werden die für die verschiedenen Stickwerkzeuge benötigten Bewegungen auf mehrere, sich längs der ganzen Maschine erstreckende Wellen übertragen, welche ihrerseits die entsprechenden Stickwerkzeuge an den vielen Stickstellen zu ihrer linearen Hin- und Herbewegung antreiben. Es wird erwähnt, dass bei Längen der Grossstickmaschinen von zehn bis zwanzig Meter es sehr schwierig wird, oszillierende Wellen von dieser Länge bei höheren Drehzahlen dynamisch zu beherrschen. Die Verdrehung dieser langen Wellen und ihre Torsionsschwingungen führen zu einer Verzerrung der an den Stickwerkzeugen geforderten Bewegung und zu einer zeitlichen Phasenverschiebung zwischen linkem und rechtem Teil der Maschine. Bei Drehzahlen über zweihundert Umdrehungen pro Minute wird dies zu einem drehzahlbegrenzenden Faktor für Grossstickmaschinen. Um diese technische Drehzahlbegrenzung nach oben zu verschieben, wird dann in der EP 0 601 343 vorgeschlagen, die Antriebe für die Nadeln und die dazugehörenden Stickwerkzeuge, nämlich Fadenleiter, Bohrer und Schiffchen, etwa auf halber Länge der Stickmaschine vorzusehen. Bereits 1982 war dies aber auch schon bei der Stickmaschine Zangs 117 R verwirklicht worden, wie dies der Broschüre "117 R Zangs-Schiffli-Sticktronic" zu entnehmen ist. In beiden Fällen wurden aber solche Antriebe nur für oszillierende, d.h. abwechslungsweise in entgegengesetzten Drehrichtungen bewegten Wellen für die Stickwerkzeuge vorgesehen, nicht aber für den Fadenwalzenantrieb oder die Fadenwalzenunterstützung, die nur in einer Drehrichtung erfolgen.As is described, for example, in EP 0 601 343, is known in the prior art Large embroidery machines arranged a main motor with a main drive shaft. On this main drive shaft are cams for the various Embroidery tool drives attached. Cam discs are used for the Different embroidery tools require movements on several, along the entire shaft extending waves, which in turn the corresponding embroidery tools at the many embroidery points for their linear back and forth Drive movement. It is mentioned that for lengths of large embroidery machines from ten to twenty meters it becomes very difficult to oscillate waves from this Mastering length dynamically at higher speeds. The twisting of this long waves and their torsional vibrations lead to a distortion of the the required movement and at a time Phase shift between the left and right part of the machine. at Speeds above two hundred revolutions per minute become one speed limiting factor for large embroidery machines. To this technical In EP 0 601 343, the speed limit is then shifted upwards proposed the drives for the needles and the associated Embroidery tools, namely thread guides, drills and boats, about half the length the embroidery machine. But this was already the case at 1982 Zangs 117 R embroidery machine has been realized as described in the brochure "117 R Zangs-Schiffli-Sticktronic "can be seen. In both cases, however, such Drives only for oscillating, i.e. alternately in opposite Direction of rotation provided shafts for the embroidery tools, but not for the thread roller drive or the thread roller support that only in one Direction of rotation.

    Es ist Aufgabe der vorliegenden Erfindung, eine Stickmaschine relativ grosser Länge zu bauen, die bei noch höheren Tourenzahlen als bisher in der Lage ist, Stickereien von hervorragender Qualität zu erzeugen.It is an object of the present invention to provide an embroidery machine of relatively great length to build, which is capable of embroidery at even higher speeds than before of excellent quality.

    Erfindungsgemäss wird dies bei einer Stickmaschine der eingangs erwähnten Gattung dadurch erreicht, dass der Antrieb etwa in der Mitte der Fadenwalze bzw. der Fadenwalzenwelle erfolgt.According to the invention, this is the case with an embroidery machine mentioned at the beginning Genre achieved in that the drive approximately in the middle of the thread roller or the thread roller shaft takes place.

    Es hat sich gezeigt, dass bei Stickmaschinen, bei denen ein unterstützendes Drehmoment an die Fadenwalze oder die Fadenwalzenwelle angelegt wird, dies zu einem gleichmässigen Stickbild über die ganze Maschinenlänge führt. Dies war insofern überraschend, als gegen das Ende der Fadenlieferung hin kein unterstützendes Drehmoment mehr wirksam ist und die Drehbewegung der Fadenwalze oder der Fadenwalzenrollen allein durch Fadenzug erfolgt, der von der Gesamtheit der über die ganze Maschinenlänge verteilten Fäden ausgeübt wird.It has been shown that in embroidery machines where a supportive Torque is applied to the thread roller or the thread roller shaft, this too uniform embroidery pattern over the entire length of the machine. This was surprising in that no towards the end of the thread delivery supporting torque is more effective and the rotational movement of the Thread roller or the thread roller rollers is done solely by thread tension, by the All threads distributed over the entire length of the machine are exercised.

    Die Antriebsvorrichtung ist vorteilhaft unterhalb des Nadelwagens am Maschinengestell angeordnet. Die Antriebsvorrichtung ist dort für Servicearbeiten gut zugänglich, was bei den engen Platzverhältnissen im Nadelwagen nicht möglich wäre.The drive device is advantageously below the needle carriage Machine frame arranged. The drive device is there for service work easily accessible, which is not possible due to the limited space in the needle carriage would.

    Eine vorteilhafte Ausführungsform sieht vor, dass der Antriebsstrang von der Antriebsvorrichtung zur Fadenwalze oder Fadenwalzenwelle eine Antriebswelle und ein Getriebe umfasst. Dies ermöglicht eine vorteilhafte, den engen Platzverhältnissen im Bereich der Fadenspulen angepasste Konstruktion. An advantageous embodiment provides that the drive train from the Drive device for thread roller or thread roller shaft a drive shaft and includes a transmission. This enables an advantageous, the tight Construction adapted to the space in the area of the thread spools.

    Zweckmässigerweise führt die Antriebswelle auf der Vorderseite der Maschine nahe am Maschinengestell vorbei. Dadurch werden günstige Platzverhältnisse für die Fadenspulen geschaffen. Es wäre aber auch möglich, die Antriebswelle durch eine Bohrung im Maschinengestell zu führen. In diesem Fall kann das Getriebe ein beim Ende der Antriebswelle angeordnetes Kegelrad aufweisen, das in ein Kegelrad eingreift, welches an der Fadenwalze oder der Fadenwalzenwelle angeordnet ist. Bei dem an der Fadenwalzenwelle angeordnetem Kegelrad kann es sich um das gleiche Kegelrad handeln, das auch dem Antrieb einer Fadenwalzenrolle dient.The drive shaft expediently leads close to the front of the machine past the machine frame. This creates favorable space for the Thread spools created. But it would also be possible to use a drive shaft To drill a hole in the machine frame. In this case, the gearbox can be used End of the drive shaft arranged bevel gear, which in a bevel gear engages which is arranged on the thread roller or the thread roller shaft. at the bevel gear arranged on the thread roller shaft can be the same Acting bevel gear, which also serves to drive a thread roller.

    Bei einem vorteilhaften Ausführungsbeispiel umfasst das Getriebe ein beim Ende der Antriebswelle angeordnetes Zahnrad, das in ein Zahnrad eingreift, das auf einer Welle sitzt, auf der ein Kegelrad angeordnet ist, welches in ein Kegelrad eingreift, das an der Fadenwalze oder der Fadenwalzenwelle angeordnet ist.In an advantageous embodiment, the transmission includes one at the end of the Drive shaft arranged gear that meshes with a gear on a Shaft sits, on which a bevel gear is arranged, which engages in a bevel gear, which is arranged on the thread roller or the thread roller shaft.

    Mit den beschriebenen und weiteren Massnahmen, z.B. der Reduktion von bewegten Massen konnte in den letzten Jahren die technische Drehzahlenbegrenzung auch bei langen Maschinen weiter nach oben verschoben werden, oder anders ausgedrückt, auch bei relativ hohen Maschinengeschwindigkeiten ein zufriedenstellendes Stickbild erzielt werden.With the described and other measures, e.g. the reduction of moving In recent years, the technical speed limit has also been able to mass long machines are moved further up, or in other words, a satisfactory even at relatively high machine speeds Embroidery picture can be achieved.

    Ein Ausführungsbeispiel wird nun unter Bezugnahme auf die Zeichnung beschrieben. Es zeigt.

    Fig. 1
    den Antriebsstrang zum Anlegen eines unterstützenden Drehmoments an die Fadenwalzenwelle,
    Fig. 2
    eine Teilansicht aus einem anderen Blickwinkel,
    Fig. 3
    einen Querschnitt durch die Stickmaschine,
    Fig. 4
    einen vergrösserten Ausschnitt aus Figur 2,
    An embodiment will now be described with reference to the drawing. It shows.
    Fig. 1
    the drive train for applying a supporting torque to the thread roll shaft,
    Fig. 2
    a partial view from a different angle,
    Fig. 3
    a cross section through the embroidery machine,
    Fig. 4
    3 shows an enlarged detail from FIG. 2,

    Schiffchenstickmaschinen weisen eine Vielzahl von Stickstellen auf, wobei bei jeder stickenden Stickstelle der Vorderfaden von der Fadenspule zur Nadel führt. In Fig. 1 sind nur drei der vielen Fadenwalzenrollen 13 ersichtlich, über die der Vorderfaden geführt wird.Shuttle embroidery machines have a variety of embroidery sites, each of which embroidering point of embroidery leads the front thread from the bobbin to the needle. In Fig. 1 only three of the many thread roller rollers 13 can be seen, over which the front thread to be led.

    Aus Figur 3 ist ersichtlich, wie der Vorderfaden 11, auch Nadelfaden genannt, von der Fadenspule 12 über die Fadenwalzenrolle 13 zum kleinen Fadenleiter 14 und von dort über den grossen Fadenleiter 15 zur Nadel 16 geführt wird. Mit der Bezugsziffer 17 ist der auf dem Maschinengestell 19 angeordnete sogenannte Nadelwagen bezeichnet, der diese Stickorgane enthält.FIG. 3 shows how the front thread 11, also called needle thread, of the bobbin 12 over the thread roller 13 to the small thread conductor 14 and from there is guided over the large thread guide 15 to the needle 16. With the reference number 17 is the so-called needle carriage arranged on the machine frame 19 referred to, which contains these embroidery organs.

    Eine Schifflistickmaschine weist eine Vielzahl von Stickstellen auf. Es sind somit auch eine Vielzahl von Fadenspulen 12, Fadenwalzenrollen 13, Nadeln 16, usw. vorhanden. Beim Einschalten der Stickstelle wird die Fadenwalzenrolle 13, auch Fadenbremse genannt, über die Kegelräder 40,36 mit der Fadenwalzenwelle 33 gekoppelt, wie dies beispielsweise in EP 0 911 437 beschrieben wird.A ship embroidery machine has a large number of embroidery points. So there are also a large number of thread spools 12, thread roller rollers 13, needles 16, etc. available. When you turn on the embroidery point, the thread roller 13, too Called thread brake, via the bevel gears 40, 36 with the thread roller shaft 33 coupled, as described for example in EP 0 911 437.

    Bei der Antriebsvorrichtung 25 handelt es sich vorzugsweise um eine solche, welche an die Fadenwalzenwelle 33 ein Drehmoment anlegt, welches die Drehung der Fadenwalzenrollen 13 unterstützt, wenn an diesen Fadenzug auftritt. Da die Vorderfäden 11 um die Fadenwalzenrollen 13 geschlungen sind, werden diese bei Auftreten von Zug an den Vorderfäden gedreht, so dass auch die Fadenwalzenwelle 33 in Drehung versetzt wird. Wie Fig.1 zeigt, sind an den Enden der Fadenwalzenwelle 33 die Fadenwalzenbremse 38 angeordnet. Die Welle 33 wird daher oft auch als Bremswelle bezeichnet.The drive device 25 is preferably one which to the thread roller shaft 33 applies a torque which causes the rotation of the Thread roller rollers 13 supports when thread tension occurs on this. Since the Front threads 11 are wound around the thread roller rollers 13, these are at Occurrence of tension on the front threads turned, so that the thread roller shaft 33 is rotated. As Fig.1 shows, are at the ends of the Thread roller shaft 33, the thread roller brake 38 is arranged. The shaft 33 will therefore often referred to as a brake shaft.

    Die Antriebsvorrichtung 25 weist einen Motor 35 und ein Differenzialgetriebe 27 auf. Mittels des Differentialgetriebes 27 kann die Welle 29 angetrieben werden. Von der Welle 29 erfolgt die Kraftübertragung über eine Freilaufnabe 28 auf das Zahnrad 30. Dieses greift in das Zahnrad 31 ein, das auf einer Welle 32 sitzt, an deren anderem Ende das Kegelrad 34 angeordnet ist. Das Kegelrad 34 greift in das Kegelrad 36 ein, das auf der Fadenwalzenwelle 33 sitzt. Mit diesem Getriebe kann somit die Antriebsvorrichtung 25 ein unterstützendes Drehmoment an die Fadenwalzenwelle 33 anlegen und so das Entstehen einer übermässigen Spannung in den Nadelfäden 11 zu vermeiden. The drive device 25 has a motor 35 and a differential gear 27. The shaft 29 can be driven by means of the differential gear 27. Of the The shaft 29 is the power transmission via a freewheel hub 28 to the gear 30. This engages in the gear 31, which sits on a shaft 32 on the other End of the bevel gear 34 is arranged. The bevel gear 34 meshes with the bevel gear 36, that sits on the thread roller shaft 33. With this gearbox you can Drive device 25 a supporting torque to the thread roller shaft 33 create and so the emergence of an excessive tension in the needle threads 11 to avoid.

    Die Ausbildung der Antriebsvorrichtung 25 kann grundsätzlich so sein, wie dies in der EP 0 795 638 beschrieben wird, so dass für nähere Angaben auf diese Druckschrift verwiesen werden kann. Im wesentlichen besteht die Antriebsvorrichtung 25 aus dem Motor 35 und dem Differentialgetriebe 27. Der Motor 35 treibt über einen Zahnriemen (nicht dargestellt) eine Riemenscheibe 41 an, welche mit dem Zahnrad 45 verbunden ist. Das Zahnrad 45 stellt das erste Sonnenrad des Differentialgetriebes dar. Die Planetenräder 47 bestehen aus zwei Zahnrädern 48,49, die fest miteinander verbunden sind. Das Zahnrad 48 ist mit dem ersten Sonnenrad 45 und das Zahnrad 49 mit dem zweiten Sonnenrad 51 im Eingriff, welches mit der Welle 29 verbunden ist. Wie insbesondere aus den Figuren 1 und 2 ersichtlich ist, kann die Welle 29 über die Zahnräder 30,31,34 und 36 ein unterstützendes Drehmoment an die Fadenwalzenwelle 33 übertragen. Diese Uebertragung erfolgt etwa in der Mitte der Fadenwalzenwelle 33. Beim Auftreten von Zug an den Nadelfäden 11 erfolgt somit eine durch das von der Antriebsvorrichtung 25 erzeugte Drehmoment unterstützter Antrieb der Fadenwalzenwelle 33 entgegen der Bremskraft der Fadenbremsen 38, die an den Enden der Fadenwalzenwelle 33 angeordnet sind. Das auf die Fadenwalzenwelle 33 ausgeübte unterstützende Drehmoment kann mit der Bremse 53, von der in Figur 3 die Bremsbacken 52 ersichtlich sind mehr oder weniger stark eingestellt werden. Die Freilaufnabe 28 ermöglicht auch eine Weiterbewegung der Fadenwalzenwelle 33 oder Fadenwalze durch Fadenzug allein, wenn von der Antriebsvorrichtung 25 kein unterstützendes Drehmoment mehr auf die Fadenwalzenwelle 33 oder Fadenwalze übertragen wird.The design of the drive device 25 can in principle be as shown in FIG EP 0 795 638 is described, so that for more details on this Reference can be made. Essentially, there is Drive device 25 from the motor 35 and the differential gear 27. Der Motor 35 drives a pulley 41 via a toothed belt (not shown), which is connected to the gear 45. The gear 45 is the first Sun gear of the differential gear. The planet gears 47 consist of two Gears 48,49, which are firmly connected. The gear 48 is with the first sun gear 45 and gear 49 meshing with second sun gear 51, which is connected to the shaft 29. As in particular from FIGS. 1 and 2 can be seen, the shaft 29 via the gears 30,31,34 and 36 supporting torque to the thread roller shaft 33. This Transmission takes place approximately in the middle of the thread roller shaft 33. When it occurs of pull on the needle threads 11 thus takes place by the of the Drive device 25 generated torque assisted drive the Thread roller shaft 33 counter to the braking force of the thread brakes 38, which at the Ends of the thread roller shaft 33 are arranged. That on the thread roller shaft 33 Supporting torque exerted can be applied with the brake 53, of the type shown in FIG the brake shoes 52 can be seen more or less adjusted. The Freewheel hub 28 also enables thread roller shaft 33 to move further or thread roller by thread pull alone if none of the drive device 25 supporting torque more on the thread roller shaft 33 or thread roller is transmitted.

    Es sind verschiedene Aenderungen möglich, ohne vom Erfindungsgedanken abzuweichen. So ist es möglich, statt Fadenwalzenrollen 13 eine Fadenwalze zu verwenden, die sich anstelle der Welle 33 über die Länge der Maschine erstreckt.Various changes are possible without the inventive concept departing. It is thus possible to use a thread roller instead of thread roller rollers 13 use, which extends instead of the shaft 33 over the length of the machine.

    Des weiteren wäre es möglich, die Welle 29 durch Bohrungen im Maschinengestell schräg zum Kegelrad 36 zu führen und dort mit einem Kegelrad 34 in Eingriff zu bringen. Dies hätte den Vorteil, dass die Zahnräder 30 und 31 erspart werden könnten.Furthermore, it would be possible to shaft 29 through holes in the machine frame to lead obliquely to the bevel gear 36 and there in engagement with a bevel gear 34 bring. This would have the advantage that the gears 30 and 31 are saved could.

    Weiter wäre es auch möglich, die Fadenwalzenwelle 33 oder die Fadenwalze durch einen von der Steuereinheit gesteuerten Motor anzutreiben, um eine aktive Fadenlieferung vorzunehmen, wie dies beispielsweise durch GB 177 317 oder die EP 0 666 351 vorgeschlagen wird. Dabei würden aber auch die Nachteile einer solchen Vorrichtung in Kauf genommen werden, die darin bestehen, dass die auf den Stickboden aufzubringende Fadenmenge nicht genau berechnet werden kann, was zu einer losen oder straffen Stickerei führen kann.It would also be possible to pass the thread roller shaft 33 or the thread roller to drive a motor controlled by the control unit to an active one Thread delivery to carry out, as for example by GB 177 317 or the EP 0 666 351 is proposed. This would also have the disadvantages of such Device to be accepted, which consist in that on the The amount of thread to be embroidered cannot be calculated exactly what can lead to loose or tight embroidery.

    Zusammenfassend kann folgendes festgehalten werden:In summary, the following can be stated:

    Die Stickmaschine besitzt eine Vielzahl von Nadeln 16, zu denen der Nadelfaden 11 von den Fadenspulen 12 über die Fadenwalzenrolle 13 läuft. Entsteht Fadenzug, so bewirkt die in den Fäden 11 entstehende Spannung eine Drehung der Fadenwalzenrollen 13. Diese wirken über die Kegelräder 40 auf die Fadenwalzenwelle 33 verteilte Kegelräder 36 ein und drehen diese. Diese Drehbewegung wird durch ein Drehmoment der Antriebsvorrichtung 25 unterstützt. Diese ist zweckmässigerweise so ausgebildet, dass das gelieferte Drehmoment allein nicht ausreicht, die Fadenwalzenwelle 33 zu drehen, so dass eine Drehung nur erfolgt, wenn ein ausreichend starker Fadenzug vorliegt. Das unterstützende Drehmoment wird etwa in der Mitte der Fadenwalzenwelle 33 angelegt.The embroidery machine has a multiplicity of needles 16, to which the needle thread 11 from the thread spools 12 runs over the thread roller 13. If thread tension arises, so causes the tension arising in the threads 11 to rotate Thread roll rollers 13. These act on the bevel gears 40 Thread roller shaft 33 distributed bevel gears 36 and rotate them. This Rotational movement is supported by a torque of the drive device 25. This is expediently designed so that the delivered torque alone is not sufficient to rotate the thread roller shaft 33, so that only one rotation takes place when the thread is sufficiently strong. The supportive Torque is applied approximately in the middle of the thread roller shaft 33.

    Claims (10)

    Stickmaschine, insbesondere Schifflistickmaschine, mit einer Vielzahl von Nadeln (16), einer Fadenwalze oder einer mit Fadenwalzenrollen (13) gekuppelten Fadenwalzenwelle (33), wobei der Vorderfaden (11) von der Fadenspule (12) über die Fadenwalze oder die Fadenwalzenrolle (13) zur Nadel (16) verläuft, einer Antriebsvorrichtung (25), welche an die Fadenwalze oder die Fadenwalzenwelle (33) ein Drehmoment anlegt, welches die Drehung der Fadenwalze bzw. der Fadenwalzenrollen (13) bei Fadenzug unterstützt, um die bei Fadenzug entstehende Spannung im Vorderfaden zu begrenzen, oder die Fadenwalze oder die Fadenwalzenwelle (33), gesteuert durch eine Steuereinheit, antreibt, um den für den Stich benötigten Vorderfaden (11) praktisch spannungsfrei zu liefern, dadurch gekennzeichnet, dass der Antrieb etwa in der Mitte der Fadenwalze bzw. der Fadenwalzenwelle (33) erfolgt.Embroidery machine, in particular a ship embroidery machine, with a plurality of needles (16), a thread roller or a thread roller shaft (33) coupled with thread roller rollers (13), the front thread (11) from the thread spool (12) via the thread roller or the thread roller roller (13) runs to the needle (16), a drive device (25), which applies a torque to the thread roller or the thread roller shaft (33), which supports the rotation of the thread roller or the thread roller rollers (13) when the thread is pulled in order to counteract the tension in the thread tension Limit front thread, or drives the thread roller or the thread roller shaft (33), controlled by a control unit, in order to supply the front thread (11) required for the stitch practically tension-free, characterized in that the drive is approximately in the middle of the thread roller or the thread roller shaft (33). Stickmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Antriebsvorrichtung (25) unterhalb des Nadelwagens (17) am Maschinengestell (19) angeordnet ist.Embroidery machine according to claim 1, characterized in that the drive device (25) is arranged below the needle carriage (17) on the machine frame (19). Stickmaschine nach Anspruch 2, dadurch gekennzeichnet, dass der Antriebsstrang von der Antriebsvorrichtung (25) zur Fadenwalze oder Fadenwalzenwelle (33) eine Antriebswelle (29) und ein Getriebe (30,31,34,36) umfasst.Embroidery machine according to claim 2, characterized in that the drive train from the drive device (25) to the thread roller or thread roller shaft (33) comprises a drive shaft (29) and a gear (30,31,34,36). Stickmaschine nach Anspruch 3, dadurch gekennzeichnet, dass die Antriebswelle (29) auf der Vorderseite der Maschine nahe am Maschinengestell (19) vorbeiführt.Embroidery machine according to claim 3, characterized in that the drive shaft (29) on the front of the machine passes close to the machine frame (19). Stickmaschine nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass die Antriebswelle (29) durch eine Bohrung im Maschinengestell (19) führt.Embroidery machine according to claim 3 or 4, characterized in that the drive shaft (29) passes through a bore in the machine frame (19). Stickmaschine nach Anspruch 5, dadurch gekennzeichnet, dass das Getriebe bei beim Ende der Antriebswelle angeordnetes Kegelrad aufweist, das in ein Kegelrad eingreift, an der Fadenwalze oder der Fadenwalzenwelle angeordnet ist.Embroidery machine according to claim 5, characterized in that the gear at the end of the drive shaft arranged bevel gear, which engages in a bevel gear, is arranged on the thread roller or the thread roller shaft. Stickmaschine nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass das Getriebe ein beim Ende der Antriebswelle (29) angeordnetes Zahnrad (30) umfasst, das in ein Zahnrad (31) eingreift, das auf einer Welle (32) sitzt, auf der ein Kegelrad (34) angeordnet ist, welches in ein Kegelrad (36) eingreift, das an der Fadenwalze oder der Fadenwalzenwelle (33) angeordnet ist.Embroidery machine according to claim 3 or 4, characterized in that the gear comprises a gear (30) which is arranged at the end of the drive shaft (29) and which engages in a gear (31) which sits on a shaft (32) on which a bevel gear (34) is arranged, which engages in a bevel gear (36) which is arranged on the thread roller or the thread roller shaft (33). Stickmaschine nach Anspruch 7, dadurch gekennzeichnet, dass eine Freilaufnabe (28) zwischen Antriebsvorrichtung (25) und Fadenwalze oder Fadenwalzenwelle (33) angeordnet ist, um eine Weiterbewegung der Fadenwalze oder Fadenwalzenwelle (33) durch Fadenzug allein zu ermöglichen.Embroidery machine according to claim 7, characterized in that a free-wheeling hub (28) is arranged between the drive device (25) and the thread roller or thread roller shaft (33) in order to enable the thread roller or thread roller shaft (33) to move further by thread tension alone. Stickmaschine nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass an beiden Enden der Fadenwalze oder Fadenwalzenwelle (33) eine Fadenwalzenbremse angeordnet ist.Embroidery machine according to one of claims 1 to 8, characterized in that a thread roller brake is arranged at both ends of the thread roller or thread roller shaft (33). Stickmaschine nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Antriebsvorrichtung (25), ein Differentialgetriebe (27) mit einer Bremsvorrichtung (53) aufweist.Embroidery machine according to one of claims 1 to 9, characterized in that the drive device (25) has a differential gear (27) with a braking device (53).
    EP02405688A 2001-09-19 2002-08-13 Embroidery machine, particularly of the Schiffli type Expired - Lifetime EP1295977B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    CH17252001 2001-09-19
    CH17252001 2001-09-19

    Publications (3)

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    EP1295977A2 true EP1295977A2 (en) 2003-03-26
    EP1295977A3 EP1295977A3 (en) 2005-01-26
    EP1295977B1 EP1295977B1 (en) 2008-01-02

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    ID=4566045

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP02405688A Expired - Lifetime EP1295977B1 (en) 2001-09-19 2002-08-13 Embroidery machine, particularly of the Schiffli type

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    EP (1) EP1295977B1 (en)
    AT (1) ATE382727T1 (en)
    DE (1) DE50211447D1 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2021174853A1 (en) * 2020-03-05 2021-09-10 苏州索布机器人有限公司 Embroidery machine for spinning and weaving

    Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB177317A (en) * 1921-01-26 1922-03-30 Lionel Stephen Disney A new or improved thread control and thread feeding mechanism for embroidery and like machines
    EP0795638A1 (en) * 1996-03-15 1997-09-17 Franz Lässer AG Method and apparatus for forming the stitch in a Schiffli embroidery machine
    EP0906982A2 (en) * 1997-10-03 1999-04-07 Hiraoka Kogyo Co. Ltd. Embroidery/lace machine
    EP1209273A2 (en) * 2000-11-21 2002-05-29 Franz Lässer AG Stitch forming process for an embroidery machine and embroidery machine for performing said process

    Patent Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB177317A (en) * 1921-01-26 1922-03-30 Lionel Stephen Disney A new or improved thread control and thread feeding mechanism for embroidery and like machines
    EP0795638A1 (en) * 1996-03-15 1997-09-17 Franz Lässer AG Method and apparatus for forming the stitch in a Schiffli embroidery machine
    EP0906982A2 (en) * 1997-10-03 1999-04-07 Hiraoka Kogyo Co. Ltd. Embroidery/lace machine
    EP1209273A2 (en) * 2000-11-21 2002-05-29 Franz Lässer AG Stitch forming process for an embroidery machine and embroidery machine for performing said process

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2021174853A1 (en) * 2020-03-05 2021-09-10 苏州索布机器人有限公司 Embroidery machine for spinning and weaving

    Also Published As

    Publication number Publication date
    ATE382727T1 (en) 2008-01-15
    EP1295977A3 (en) 2005-01-26
    EP1295977B1 (en) 2008-01-02
    DE50211447D1 (en) 2008-02-14

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