EP0841425A2 - Apparatus for changing the bobbin in an embroidering or sewing machine - Google Patents

Apparatus for changing the bobbin in an embroidering or sewing machine Download PDF

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Publication number
EP0841425A2
EP0841425A2 EP97117475A EP97117475A EP0841425A2 EP 0841425 A2 EP0841425 A2 EP 0841425A2 EP 97117475 A EP97117475 A EP 97117475A EP 97117475 A EP97117475 A EP 97117475A EP 0841425 A2 EP0841425 A2 EP 0841425A2
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EP
European Patent Office
Prior art keywords
shaft
carriage
gripper
gripper shaft
bobbin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97117475A
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German (de)
French (fr)
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EP0841425B1 (en
EP0841425A3 (en
Inventor
Ricky Pang Kim Kwang
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Madeira Asia Pte Ltd
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Madeira Asia Pte Ltd
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Publication date
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Publication of EP0841425A2 publication Critical patent/EP0841425A2/en
Publication of EP0841425A3 publication Critical patent/EP0841425A3/en
Application granted granted Critical
Publication of EP0841425B1 publication Critical patent/EP0841425B1/en
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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B59/00—Applications of bobbin-winding or -changing devices; Indicating or control devices associated therewith
    • D05B59/04—Devices for changing the bobbin
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/08—Loop takers, e.g. loopers for lock-stitch sewing machines
    • D05B57/10—Shuttles
    • D05B57/14—Shuttles with rotary hooks
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/30—Driving-gear for loop takers
    • D05B57/36—Driving-gear for loop takers in lock-stitch sewing machines
    • D05B57/38—Shuttle drives

Definitions

  • the invention relates to a device for changing the Bobbin in a driven by a hook shaft Rotary gripper of an industrial embroidery or sewing machine.
  • the bobbin must be used with every embroidery or sewing machine removed from the rotary gripper and by a new bobbin to be replaced either when the bobbin thread used up and therefore the bobbin is empty, or if the Bobbin thread breaks during embroidery or sewing. The It can only be replaced when the machine is at a standstill. The shutdown is usually automatic and will triggered by a bobbin thread monitor or detector. At a typical engine speed of 700 rpm and one Standard bobbin with approx. 100 m thread length is however the bobbin thread is used up after about 45 minutes.
  • the invention is therefore based on the object of a device to change the bobbin to create the the downtime of the machine and the resulting ones Loss of production significantly reduced.
  • this object is achieved by a carriage with at least two aligned parallel to the gripper shaft Coupling shafts, each on their gripper shaft opposite end of the usual, the bobbin containing rotary gripper while carrying the gripper shaft facing end can be coupled to the latter in such a way that the carriage is rectangular when the gripper shaft is at a standstill to this and parallel to the needle plate plane around the Distance of the coupling shafts is reversible.
  • the embroidery or sewing head or each embroidery head assigned at least two rotary grippers, which at the start of production both are equipped with full bobbins.
  • the other The rotary gripper stands still and is in a waiting position. Is now the thread supply of the bobbin in the first rotary hook is exhausted or there is a thread break, so the machine stops. Instead of the empty one Lower thread bobbin of this rotary hook against usual as before replacing a full bobbin is only necessary move the sled until the other, previously waiting Orbital gripper comes into its working position. This The changing process takes less than a second for each head claim. The machine can then be put back in immediately Gear. With the machine running, the empty thread spool of the rotary gripper now in the waiting position without time pressure against a full bobbin exchanged. This change process is repeated every time a bobbin is exhausted.
  • the gripper shaft has a head with a when the Gripper shaft parallel to the sliding direction of the slide oriented transverse groove, and each of the coupling shafts has one Driver with a wedge that can be inserted into the transverse groove.
  • the Transverse groove and / or the wedges insertion chamfers makes possible a safe coupling of the respective coupling shaft with the driving gripper shaft even with tight tolerances between the transverse groove at the end of the gripper shaft and the wedges of the respective coupling shafts.
  • the preferred embodiment here has the advantage, however, of the anti-rotation device for the coupling shafts as a simple, to the direction of displacement Form a parallel slide at the level of the wedges to be able to.
  • the sled is powered by an electric motor Move drive.
  • Rotating are considered or linear standard drives, best combined with an incremental displacement sensor, which ensures that the Carriage in the given position in which the Coupling shaft of the active rotary gripper exactly with the Gripper shaft is aligned, comes to a standstill.
  • an incremental displacement sensor which ensures that the Carriage in the given position in which the Coupling shaft of the active rotary gripper exactly with the Gripper shaft is aligned, comes to a standstill.
  • the proposed changing device is located under the only schematically indicated tabletop 1 e.g. one usual embroidery machine.
  • the device comprises a base plate 2, hanging over columns 3 under the table top 1 is attached. This already allows retrofitting existing machines with the changing device.
  • the changing device itself consists essentially of a carriage 4 in which two parallel to the gripper shaft 5 aligned coupling shafts 6 and 7 are supported by which each at its end facing away from the gripper shaft 5 a rotary gripper 8 or 9 carries.
  • the carriage 4 is on a prismatic guide rail 10 between two end positions movable at right angles to the gripper shaft 5.
  • the End positions are indicated by two schematically indicated microswitches 11 and 12 with from the end faces of the slide 4 actuated feeler levers 11a and 12a determined.
  • A serves to reverse the carriage 4 electromotive drive, which in the exemplary embodiment an electric motor 15 is symbolized by a gear an eccentric 16 between two cams 17 and 18th rotates, which in turn are attached to the end of an arm 19, which is connected to the carriage 4 at its other end is.
  • Fig. 2 the carriage 4 is in its left End position in which the right rotary gripper 9 in its working position stands, in which he over his clutch shaft 7 is coupled to the gripper shaft 5.
  • Fig. 3 shows the Slide 4 during its displacement on the rail 10 in an intermediate position.
  • each of the coupling shafts 6, 7 has a driver 6a or 7a with a wedge 22 or 23 which can be inserted into the transverse groove 21.
  • the wedges 22, 23 are in turn with the indicated chamfers 22a and 23a.

Abstract

The mechanism to exchange the lower thread bobbin in a rotating looper, at an industrial sewing or embroidery machine, has a slide (4) with at least two coupling shafts (6,7) parallel to the looper drive shaft (5), each with a looper (8,9) at the ends away from the looper shaft. The ends towards the looper drive shaft have couplings (21-23) so that the slide, when the looper shaft is at rest, is at right angles to it and parallel to the plane of the needle plate, and can be reversed by the coupling shaft gap.

Description

Die Erfindung betrifft eine Vorrichtung zum Wechseln der Unterfadenspule in einem über eine Greiferwelle angetriebenen Umlaufgreifer einer industriellen Stick- oder Nähmaschine.The invention relates to a device for changing the Bobbin in a driven by a hook shaft Rotary gripper of an industrial embroidery or sewing machine.

Bei jeder Stick- oder Nähmaschine muß bekanntlich die Unterfadenspule aus dem Umlaufgreifer entnommen und durch eine neue Spule ersetzt werden, entweder wenn der Unterfaden verbraucht und mithin die Spule leer ist, oder wenn der Unterfaden während des Stick- oder Nähvorganges bricht. Das Auswechseln kann nur bei stillstehender Maschine erfolgen. Die Stillsetzung erfolgt in der Regel selbsttätig und wird von einem Unterfadenwächter oder -detektor ausgelöst. Bei einer üblichen Maschinendrehzahl von 700 U/min und einer Standardunterfadenspule mit ca. 100 m Fadenlänge ist jedoch der Unterfaden schon nach etwa 45 Minuten verbraucht.As is well known, the bobbin must be used with every embroidery or sewing machine removed from the rotary gripper and by a new bobbin to be replaced either when the bobbin thread used up and therefore the bobbin is empty, or if the Bobbin thread breaks during embroidery or sewing. The It can only be replaced when the machine is at a standstill. The shutdown is usually automatic and will triggered by a bobbin thread monitor or detector. At a typical engine speed of 700 rpm and one Standard bobbin with approx. 100 m thread length is however the bobbin thread is used up after about 45 minutes.

Das nun notwendige Auswechseln der leeren Unterfadenspule bei stillstehender Maschine nimmt zwar bei geschultem Personal nur etwa fünf bis acht Sekunden in Anspruch. Gravierend wirken sich diese Stillstandszeiten indessen bei industriellen Stickmaschinen aus, denn diese haben in der Regel 12 bis 20 gleichzeitig arbeitende Stickköpfe, die sämtlich stillstehen, sobald bei irgendeinem Kopf der Unterfaden ausgeht. Bei einer Maschine mit 20 Köpfen gehen also für das periodisch erforderliche Wechseln sämtlicher Unterfadenspulen je Arbeitsstunde ca. drei Minuten an Produktionszeit verloren. The now necessary replacement of the empty bobbin when the machine is at a standstill with trained personnel takes only about five to eight seconds. Seriously these downtimes have an effect on industrial ones Embroidery machines, because these usually have 12 to 20 simultaneous embroidery heads, all of which stand still, as soon as the bobbin thread runs out on any head. For a machine with 20 heads, this works periodically required changing of all bobbins each Working hours lost about three minutes in production time.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung zum Wechseln der Unterfadenspule zu schaffen, die die Stillstandszeit der Maschine und den dadurch eintretenden Produktionsverlust erheblich vermindert.The invention is therefore based on the object of a device to change the bobbin to create the the downtime of the machine and the resulting ones Loss of production significantly reduced.

Diese Aufgabe ist erfindungsgemäß gelöst durch einen Schlitten mit mindestens zwei parallel zu der Greiferwelle ausgerichtete Kupplungswellen, von denen jede an ihrem der Greiferwelle abgewandten Ende den üblichen, die Unterfadenspule enthaltenden Umlaufgreifer trägt, während ihr der Greiferwelle zugewandtes Ende mit letzterer derart kuppelbar ist, dass der Schlitten bei Stillstand der Greiferwelle rechtwinklig zu dieser und parallel zu der Stichplattenebene um den Abstand der Kupplungswellen reversierend verfahrbar ist.According to the invention, this object is achieved by a carriage with at least two aligned parallel to the gripper shaft Coupling shafts, each on their gripper shaft opposite end of the usual, the bobbin containing rotary gripper while carrying the gripper shaft facing end can be coupled to the latter in such a way that the carriage is rectangular when the gripper shaft is at a standstill to this and parallel to the needle plate plane around the Distance of the coupling shafts is reversible.

Bei der mit der Erfindung vorgeschlagenen Wechselvorrichtung sind also dem Stick- oder Nähkopf bzw. jedem Stickkopf mindestens zwei Umlaufgreifer zugeordnet, die bei Produktionsbeginn beide mit vollen Unterfadenspulen bestückt sind. Von diesen beiden Umlaufgreifern befindet sich jeweils einer in seiner Arbeitsstellung, in der er wie üblich den Unterfaden für den Stick- oder Nähvorgang liefert. Der andere Umlaufgreifer steht still und befindet sich in einer Warteposition. Ist nun der Fadenvorrat der Unterfadenspule in dem ersten Umlaufgreifer erschöpft oder kommt es zu einem Fadenbruch, so bleibt die Maschine stehen. Statt nun die leere Unterfadenspule dieses Umlaufgreifers wie bisher üblich gegen eine volle Unterfadenspule auszuwechseln, wird lediglich der Schlitten so weit verfahren, bis der andere, bisher wartende Umlaufgreifer in seine Arbeitsposition kommt. Dieser Wechselvorgang nimmt für jeden Kopf weniger als eine Sekunde in Anspruch. Anschließend kann die Maschine sofort wieder in Gang gesetzt werden. Bei laufender Maschine wird sodann die leere Fadenspule des nun in Warteposition befindlichen Umlaufgreifers ohne zeitlichen Druck gegen eine volle Fadenspule ausgetauscht. Dieser Wechselvorgang wiederholt sich jedes Mal, wenn eine Unterfadenspule erschöpft ist.In the changing device proposed by the invention are the embroidery or sewing head or each embroidery head assigned at least two rotary grippers, which at the start of production both are equipped with full bobbins. There is one of each of these two rotary grippers in his working position, in which he bobbin thread as usual supplies for embroidery or sewing. The other The rotary gripper stands still and is in a waiting position. Is now the thread supply of the bobbin in the first rotary hook is exhausted or there is a thread break, so the machine stops. Instead of the empty one Lower thread bobbin of this rotary hook against usual as before replacing a full bobbin is only necessary move the sled until the other, previously waiting Orbital gripper comes into its working position. This The changing process takes less than a second for each head claim. The machine can then be put back in immediately Gear. With the machine running, the empty thread spool of the rotary gripper now in the waiting position without time pressure against a full bobbin exchanged. This change process is repeated every time a bobbin is exhausted.

Bei den üblichen Mehrkopf-Stickmaschinen, bei denen meist alle Köpfe das gleiche Muster sticken, empfiehlt es sich, die Unterfadenspulen sämtlicher Köpfe gleichzeitig auszuwechseln, sobald die Unterfadenspule irgendeines Kopfes erschöpft ist, und die Maschine dadurch zum Stillstand kommt. Denn es ist wirtschaftlicher, nach ca. einer Sekunde die gesamte Maschine mit vollen Unterfadenspulen weiterproduzieren zu lassen, als den in dieser Situation in der Regel geringen Unterfadenvorrat auf jeder einzelnen Spule aufzubrauchen und dafür die der Kopfzahl entsprechende Anzahl von Stillstandszeiten der Maschine in Kauf zu nehmen.With the usual multi-head embroidery machines, where mostly all heads embroider the same pattern, it is recommended replace the bobbins of all heads at the same time, once the bobbin of any head is exhausted and the machine comes to a standstill is coming. Because it is more economical after about a second continue to produce the entire machine with full bobbins to leave as the one in this situation in the Usually low bobbin thread supply on each individual bobbin to use up and the one corresponding to the number of heads Accept the number of machine downtimes.

Bei einer bevorzugten Ausführungsform der Wechselvorrichtung hat die Greiferwelle einen Kopf mit einer bei Stillstand der Greiferwelle parallel zur Verschieberichtung des Schlittens orientierten Quernut, und jede der Kupplungswellen hat einen Mitnehmer mit einem in die Quernut einführbaren Keil. Diese Ausführungsform macht sich den Umstand zunutze, dass industrielle Näh- und Stickmaschinen und damit auch deren Greiferwellen nicht in einer beliebigen sondern in einer genau definierten Stellung zum Stillstand kommen.In a preferred embodiment of the changing device the gripper shaft has a head with a when the Gripper shaft parallel to the sliding direction of the slide oriented transverse groove, and each of the coupling shafts has one Driver with a wedge that can be inserted into the transverse groove. This Embodiment takes advantage of the fact that industrial Sewing and embroidery machines and thus their hook shafts not in any one, but in one come to a standstill in a defined position.

Nach einer Weiterbildung dieser Ausführungsform haben die Quernut und/oder die Keile Einführanschrägungen. Dies ermöglicht ein sicheres Kuppeln der jeweiligen Kupplungswelle mit der antreibenden Greiferwelle auch bei engen Toleranzen zwischen der Quernut am Ende der Greiferwelle und den Keilen der jeweiligen Kupplungswellen.According to a further development of this embodiment, the Transverse groove and / or the wedges insertion chamfers. this makes possible a safe coupling of the respective coupling shaft with the driving gripper shaft even with tight tolerances between the transverse groove at the end of the gripper shaft and the wedges of the respective coupling shafts.

Während die Stellung der Greiferwelle bei Stillstand der Maschine, wie gesagt, genau festliegt, besteht die Möglichkeit, dass sich die Kupplungswelle des jeweils in Wartestellung befindlichen Umlaufgreifers z.B. während des Auswechselns der Unterfadenspule unbeabsichtigt aus ihrer für den Kupplungsvorgang erforderlichen Stellung verdreht. Insbesondere bei der zuvor geschilderten, bevorzugten Ausführungsform der Kupplungsvorrichtung ist es daher zweckmäßig, wenn den Kupplungswellen eine in deren ausgekuppelter Stellung wirksame Verdrehsicherung zugeordnet ist.While the position of the gripper shaft when the Machine, as I said, is precisely fixed, there is the possibility that the clutch shaft is in the waiting position rotary gripper located e.g. during the replacement the bobbin unintentionally from its for rotated the position required for the coupling process. Especially in the preferred embodiment described above the coupling device it is therefore expedient if the clutch shafts in their disengaged position effective anti-rotation is assigned.

Statt wie zuvor erwähnt, die Greiferwelle mit einer Quernut und die Kupplungswellen mit Keilen zu versehen, ist auch die umgekehrte Zuordnung möglich. Die hier bevorzugte Ausführungsform hat jedoch den Vorteil, die Verdrehsicherung für die Kupplungswellen als einfache, zur Verschieberichtung des Schlittens parallele Gleitbahn in Höhe der Keile ausbilden zu können.Instead of the gripper shaft with a transverse groove as mentioned before and wedging the clutch shafts is also that reverse assignment possible. The preferred embodiment here has the advantage, however, of the anti-rotation device for the coupling shafts as a simple, to the direction of displacement Form a parallel slide at the level of the wedges to be able to.

Zur ausreichend genauen Führung des Schlittens gibt es verschiedene, dem Fachmann grundsätzlich bekannte Möglichkeiten. Bewährt hat sich für diesen Zweck eine Prismenschiene.There are various ways of guiding the slide with sufficient accuracy, Possibilities known to the person skilled in the art. A prism rail has proven itself for this purpose.

In der Regel wird man den Schlitten über einen elektromotorischen Antrieb verschieben. In Betracht kommen rotierende oder lineare Standardantriebe, am besten kombiniert mit einem inkrementalen Wegaufnehmer, der sicherstellt, dass der Schlitten jeweils in der vorgegebenen Position, in der die Kupplungswelle des aktiven Umlaufgreifers genau mit der Greiferwelle fluchtet, zum Stillstand kommt. Versuche haben jedoch gezeigt, daß auch bereits mit einfachen Endlagenschaltern eine ausreichend genaue Positionierung erzielt werden kann.As a rule, the sled is powered by an electric motor Move drive. Rotating are considered or linear standard drives, best combined with an incremental displacement sensor, which ensures that the Carriage in the given position in which the Coupling shaft of the active rotary gripper exactly with the Gripper shaft is aligned, comes to a standstill. Have attempts however, shown that even with simple limit switches achieved a sufficiently precise positioning can be.

Sinnvollerweise wird der elektromotorische Antrieb des Schlittens mit der Maschinensteuerung so verknüpft, dass er nur bei stillstehender Greiferwelle aktivierbar ist. Bei Mehrkopfmaschinen empfiehlt es sich, die Steuerung so auszulegen, dass der Stillstand der Maschine wegen Fehlens des Unterfadens an einem Kopf wahlweise die Aktivierung nur des diesem Kopf zugeordneten Schlittenantriebs oder die Aktivierung aller Schlittenantriebe gleichzeitig auslöst.The electric motor drive of the Sled linked to the machine control so that it can only be activated when the gripper shaft is stationary. At Multi-head machines, it is recommended to design the control so that the machine has come to a standstill due to the lack of Thread on one head optionally activating only the carriage drive associated with this head or activation of all slide drives triggers at the same time.

Es bietet sich an, den elektromotorischen Antrieb des Schlittens über die elektrische Maschinensteuerung in Verbindung mit dem jedem Stick- oder Nähkopf zugeordneten Unterfadenwächter zu aktivieren.It lends itself to the electric motor drive of the Connected via the electrical machine control with the one assigned to each embroidery or sewing head To activate the bobbin thread monitor.

In der Zeichnung ist eine Wechselvorrichtung nach der Erfindung in einer beispielsweise gewählten Ausführungsform schematisch vereinfacht dargestellt. Es zeigt:

Fig. 1
eine schematische Stirnansicht eines Teils einer Stickmaschine, die mit einer Vorrichtung nach der Erfindung ausgerüstet ist,
Fig. 2
eine Aufsicht entsprechend der Linie II-II in Fig. 1 und
Fig. 3
eine perspektivische Darstellung der Wechselvorrichtung, gesehen in Richtung des Pfeils III in Fig. 1.
In the drawing, a changing device according to the invention is shown schematically simplified in an embodiment selected, for example. It shows:
Fig. 1
1 shows a schematic end view of part of an embroidery machine that is equipped with a device according to the invention,
Fig. 2
a supervision according to the line II-II in Fig. 1 and
Fig. 3
a perspective view of the changing device, seen in the direction of arrow III in Fig. 1st

Die vorgeschlagene Wechselvorrichtung befindet sich unter der nur schematisch angedeuteten Tischplatte 1 z.B. einer üblichen Stickmaschine. Die Vorrichtung umfaßt eine Grundplatte 2, die über Säulen 3 hängend unter der Tischplatte 1 befestigt ist. Dies erlaubt auch eine Nachrüstung bereits vorhandener Maschinen mit der Wechselvorrichtung.The proposed changing device is located under the only schematically indicated tabletop 1 e.g. one usual embroidery machine. The device comprises a base plate 2, hanging over columns 3 under the table top 1 is attached. This already allows retrofitting existing machines with the changing device.

Die Wechselvorrichtung selbst besteht im wesentlichen aus einem Schlitten 4, in dem zwei parallel zu der Greiferwelle 5 ausgerichtete Kupplungswellen 6 und 7 gelagert sind, von denen jede an ihren der Greiferwelle 5 abgewandten Ende einen Umlaufgreifer 8 bzw. 9 trägt. Der Schlitten 4 ist auf einer prismatischen Führungsschiene 10 zwischen zwei Endlagen rechtwinklig zu der Greiferwelle 5 verfahrbar. Die Endlagen sind durch zwei schematisch angedeutete Mikroschalter 11 und 12 mit von den Stirnflächen des Schlittens 4 betätigten Tasthebeln 11a und 12a bestimmt.The changing device itself consists essentially of a carriage 4 in which two parallel to the gripper shaft 5 aligned coupling shafts 6 and 7 are supported by which each at its end facing away from the gripper shaft 5 a rotary gripper 8 or 9 carries. The carriage 4 is on a prismatic guide rail 10 between two end positions movable at right angles to the gripper shaft 5. The End positions are indicated by two schematically indicated microswitches 11 and 12 with from the end faces of the slide 4 actuated feeler levers 11a and 12a determined.

Zum reversierenden Verfahren des Schlittens 4 dient ein elektromotorischer Antrieb, der im Ausführungsbeispiel durch einen Elektromotor 15 symbolisiert ist, der über ein Getriebe eine Exzenterscheibe 16 zwischen zwei Nocken 17 und 18 dreht, die ihrerseits am Ende eines Arms 19 befestigt sind, der an seinem anderen Ende mit dem Schlitten 4 verbunden ist.A serves to reverse the carriage 4 electromotive drive, which in the exemplary embodiment an electric motor 15 is symbolized by a gear an eccentric 16 between two cams 17 and 18th rotates, which in turn are attached to the end of an arm 19, which is connected to the carriage 4 at its other end is.

In Fig. 2 befindet sich der Schlitten 4 in seiner linken Endlage, in der der rechte Umlaufgreifer 9 in seiner Arbeitsposition steht, in welcher er über seine Kupplungswelle 7 mit der Greiferwelle 5 gekuppelt ist. Fig. 3 zeigt den Schlitten 4 während seiner Verschiebung auf der Schiene 10 in einer Zwischenstellung.In Fig. 2 the carriage 4 is in its left End position in which the right rotary gripper 9 in its working position stands, in which he over his clutch shaft 7 is coupled to the gripper shaft 5. Fig. 3 shows the Slide 4 during its displacement on the rail 10 in an intermediate position.

Zur wahlweisen Verbindung mit der einen oder der anderen Kupplungswelle 6 oder 7 der Umlaufgreifer 8 bzw. 9 hat die Greiferwelle 5 einen Kopf 20 mit einer Quernut 21, die bei stillstehender Greiferwelle waagerecht steht. Demgegenüber hat jede der Kupplungswellen 6, 7 einen Mitnehmer 6a bzw. 7a mit einem in die Quernut 21 einführbaren Keil 22 bzw. 23. Die Keile 22, 23 sind ihrerseits mit den angedeuteten Einführschrägen 22a und 23a versehen.For optional connection with one or the other Coupling shaft 6 or 7 of the rotary grippers 8 and 9 respectively Gripper shaft 5 a head 20 with a transverse groove 21, which at stationary gripper shaft is horizontal. In contrast each of the coupling shafts 6, 7 has a driver 6a or 7a with a wedge 22 or 23 which can be inserted into the transverse groove 21. The wedges 22, 23 are in turn with the indicated chamfers 22a and 23a.

Damit sichergestellt ist, dass die Keile 22, 23 auch nach dem Auskuppeln in ihrer für das Wiedereinkuppeln erforderlichen, waagerechten Stellung bleiben, ist parallel zu der Führungsschiene 10 eine Schiene 30 angeordnet, deren in Fig. 3 obere Stirnfläche 31 eine Gleitbahn in Höhe der Keile 22, 23 bildet, die von beiden Seiten bis nahe an die Greiferwelle 5 heranreicht.This ensures that the wedges 22, 23 also after disengaging in their required for re-engaging, horizontal position is parallel to that Guide rail 10 a rail 30 arranged, the one shown in Fig. 3 upper end face 31 a slideway at the level of the wedges 22, 23 forms that from both sides close to the gripper shaft 5 reaches.

Claims (9)

Vorrichtung zum Wechseln der Unterfadenspule in einem über eine Greiferwelle angetriebenen Umlaufgreifer einer industriellen Stick- oder Nähmaschine,
gekennzeichnet durch
einen Schlitten (4) mit mindestens zwei parallel zu der Greiferwelle (5) ausgerichtete Kupplungswellen (6, 7), von denen jede an ihrem der Greiferwelle (5) abgewandten Ende einen Umlaufgreifer (8, 9) trägt während ihr der Greiferwelle (5) zugewandtes Ende mit letzterer derart kuppelbar (21; 22, 23) ist, dass der Schlitten (4) bei Stillstand der Greiferwelle (5) rechtwinklig zu dieser und parallel zur Stichplattenebene (1) um den Abstand der Kupplungswellen (6, 7) reversierend verfahrbar ist.Device for changing the lower thread bobbin in a rotary hook of an industrial embroidery or sewing machine driven by a hook shaft,
marked by
a carriage (4) with at least two coupling shafts (6, 7) aligned parallel to the gripper shaft (5), each of which carries a rotary gripper (8, 9) at its end facing away from the gripper shaft (5) while the gripper shaft (5) The end facing the latter can be coupled (21; 22, 23) in such a way that when the hook shaft (5) is at a standstill, the carriage (4) can be moved at right angles to it and parallel to the throat plate plane (1) by the distance between the coupling shafts (6, 7) is. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Greiferwelle (5) einen Kopf (20) mit einer bei Stillstand der Greiferwelle (5) parallel zur Verschieberichtung des Schlittens (4) orientierten Quernut (21) hat und dass jede der Kupplungswellen (6, 7) einen Mitnehmer mit einem in die Quernut einführbaren Keil (22, 23) hat.Device according to claim 1, characterized in that the gripper shaft (5) has a head (20) with a when the gripper shaft (5) is at a standstill parallel to the direction of displacement of the slide (4) oriented transverse groove (21) and that each of the coupling shafts (6, 7) a driver with an insertable into the transverse groove Wedge (22, 23). Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Quernut (21) und/oder die Keile (22, 23) Einführanschrägungen (22a, 23a) haben.Device according to claim 2, characterized in that the transverse groove (21) and / or the wedges (22, 23) insertion bevels (22a, 23a). Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass den Kupplungswellen (6, 7) eine in deren ausgekuppelter Stellung wirksame Verdrehsicherung (31) zugeordnet ist. Device according to one of claims 1 to 3, characterized characterized in that the coupling shafts (6, 7) a effective anti-rotation lock in its disengaged position (31) is assigned. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Verdrehsicherung aus einer zur Verschieberichtung des Schlittens (4) parallelen Gleitbahn (31) in Höhe der Keile (22, 23) besteht.Device according to claim 4, characterized in that the anti-rotation device from one to the direction of displacement of the slide (4) parallel slideway (31) at the level of the wedges (22, 23). Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Schlitten (4) auf einer Prismenschiene (10) läuft.Device according to one of claims 1 to 5, characterized characterized in that the carriage (4) on a prism rail (10) is running. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Schlitten (4) über einen elektromotorischen Antrieb (15 bis 19) verschiebbar ist.Device according to one of claims 1 to 6, characterized characterized in that the carriage (4) over a Electromotive drive (15 to 19) can be moved is. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass der elektromotorische Antrieb (15 bis 19) nur bei stillstehender Greiferwelle aktivierbar ist.Device according to claim 7, characterized in that the electric motor drive (15 to 19) only at stationary gripper shaft can be activated. Vorrichtung nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass der elektromotorische Antrieb (15 bis 19) des Schlittens über einen Fadenwächter aktivierbar ist.Device according to claim 7 or 8, characterized in that that the electric motor drive (15 to 19) of the carriage can be activated via a thread monitor is.
EP97117475A 1996-11-07 1997-10-09 Apparatus for changing the bobbin in an embroidering or sewing machine Expired - Lifetime EP0841425B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19645979 1996-11-07
DE19645979A DE19645979C1 (en) 1996-11-07 1996-11-07 Device for changing the bobbin of an embroidery or sewing machine

Publications (3)

Publication Number Publication Date
EP0841425A2 true EP0841425A2 (en) 1998-05-13
EP0841425A3 EP0841425A3 (en) 1998-09-09
EP0841425B1 EP0841425B1 (en) 2002-08-21

Family

ID=7810961

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97117475A Expired - Lifetime EP0841425B1 (en) 1996-11-07 1997-10-09 Apparatus for changing the bobbin in an embroidering or sewing machine

Country Status (7)

Country Link
US (1) US5904110A (en)
EP (1) EP0841425B1 (en)
KR (1) KR100343075B1 (en)
CN (1) CN1077623C (en)
DE (2) DE19645979C1 (en)
ES (1) ES2180873T3 (en)
PT (1) PT841425E (en)

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CN110468529A (en) * 2019-09-23 2019-11-19 北京大豪科技股份有限公司 Control method, control device, equipment and the storage medium of rotating shuttle more changing device
BE1027290B1 (en) * 2019-11-04 2020-12-09 T M C Machines Nv CHANGING WIRE COILS

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IT1299993B1 (en) * 1998-04-30 2000-04-04 Resta Srl EQUIPMENT FOR THE AUTOMATIC CHANGE OF SPOOL CAPSULES IN QUILTING MACHINES.
CH696339A5 (en) * 2003-08-08 2007-04-30 Gegauf Fritz Ag Sewing or embroidery machine.
CN101979747A (en) * 2010-11-03 2011-02-23 佛山市启创科技发展有限公司 Automatic bottom line changing device of computer embroidery machine
CN102978851A (en) * 2012-11-02 2013-03-20 中捷大宇机械有限公司 Automatic ground thread changing device for digital control embroidery machine
CN103320994B (en) * 2013-07-02 2014-09-24 江苏万乐复合材料有限公司 Automatic changing device for lower thread in sewing machine
CN103696186B (en) * 2013-12-11 2014-07-30 佛山市启创科技发展有限公司 Shuttle core clamping mechanism used in automatic base line replacing device of embroidery machine
CN104928863B (en) * 2015-06-24 2017-02-22 武汉真优美电脑绣花机有限公司 Ring shuttle split type fixing device
CN107558035A (en) * 2017-09-08 2018-01-09 北京大豪科技股份有限公司 Peg or spindle more exchange device and embroidery machine

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CN110468529A (en) * 2019-09-23 2019-11-19 北京大豪科技股份有限公司 Control method, control device, equipment and the storage medium of rotating shuttle more changing device
BE1027290B1 (en) * 2019-11-04 2020-12-09 T M C Machines Nv CHANGING WIRE COILS

Also Published As

Publication number Publication date
DE19645979C1 (en) 1998-07-23
DE59708008D1 (en) 2002-09-26
KR100343075B1 (en) 2002-08-22
CN1182146A (en) 1998-05-20
US5904110A (en) 1999-05-18
CN1077623C (en) 2002-01-09
EP0841425B1 (en) 2002-08-21
EP0841425A3 (en) 1998-09-09
KR19980042194A (en) 1998-08-17
PT841425E (en) 2002-11-29
ES2180873T3 (en) 2003-02-16

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