EP2022880A1 - Needle holder - Google Patents

Abstract

A needle-receiver (2) has a seat that accommodates a needle end (7). A needle clamp (8) is connected to the needle-receiver. The clamp moves between a clamping position and a release position. A movable clamp holder moves between a fixing position, in which it holds the needle clamp in the clamping position, and a release position, in which it releases the needle clamp. The fixer slides or moves away from the needle clamp or to the needle-receiver.

Description

The invention relates to a needle holder which is suitable for needles in general and in particular for embroidery needles, such as Schifflinnadeln.

Embroidery machines, in particular large embroidery machines, are provided with needle bars which carry at their ends in each case a tensioning device for a needle. The needles are also referred to as embroidery needles or Schifflinnadeln. The needle bars are moved axially reciprocatingly to perform an embroidering process to repeatedly pierce the needle through a textile.

It often happens that needles are to be changed.

The GB 387 073 proposes to grasp the needles held on a bar in a turret, which can be converted into, for example, four index positions. If one of the four needles held on the turret breaks, the turret can be rotated 90 degrees to bring a new needle into position. On the turret, the needles are held by a clamping claw, which can be tightened or loosened by means of a fastening screw.

Moreover, from the DE-OS 1 927 498 a needle holder known in which a plurality of needles are pivotally supported. These can be transferred to either resting or working position. This allows different colored threads to be selected.

It is an object of the invention to provide a way of attaching needles to needle bars, by a simple and fast needle change is made possible.

• Die erfindungsgemäße Nadelhalterung weist ein Nadelaufnahmeteil mit einem Nadelklemmteil und einem Fixierelement auf, mittels dessen das Nadelklemmteil in einer Klemmposition fixierbar ist. Die Nadelhalterung ist in Verlängerung an einer Nadelstange angebracht. Sie kann auch einstückig, nahtlos mit dieser verbunden sein. Das Fixierelement wird zum Fixieren des Nadelklemmteils auf dieses geschoben und zum Freigeben desselben von diesem weg bewegt. So kann die Nadel auf besonders einfache Weise mit einem sehr einfachen Handgriff an der Nadelstange befestigt und ebenso einfach von dieser wieder gelöst werden. Die Richtung zum Einlegen bzw. zum Entnehmen der Nadel ist quer zur Längsrichtung der Nadel bzw. der Nadelstange möglich. Somit wird der Nadelwechsel durch Gegenstände die sich vor der Nadelspitze befinden nicht beeinflusst Der zum Nadelwechsel notwendige erforderliche manuelle Aufwand ist deshalb sehr gering. Andererseits ist die Nadel sicher an der Nadelstange gehalten.
• Das Nadelaufnahmeteil der Nadelhalterung bzw. der Nadelstange weist als Sitz zur Aufnahme der Nadel vorzugsweise eine längliche rinnenartige Ausnehmung auf, die an ein Ende der Nadel angepasst ist. Dieses auch als "Kolben" bezeichnete Ende der Nadel bildet einen Halteabschnitt. In der rinnenartigen Ausnehmung kann ein Querstift oder eine Querrippe angeordnet sein. Diesem Stift oder dieser Rippe kann eine in dem Ende der Nadel vorgesehene Kerbe zugeordnet sein. Es können jedoch auch Nadeln, gemäß dem Stand der Technik, mit abgeflachtem Kolben bzw. Ende, wie sie heute in großer Anzahl in der Textilindustrie eingesetzt werden, in eine solche Nadelhalterung eingesetzt werden. Sie ist somit rückwärts kompatibel.
• Das Nadelklemmteil ist vorzugsweise als Spannklappe ausgebildet, die auf das Ende der Nadel hin und von diesem weg schwenkbar gelagert ist. Das Ende bzw. der Kolben der Nadel ist an einer Seite von dem Nadelaufnahmeteil aufgenommen. Seine andere Seite wird von dem Nadelklemmteil, beispielsweise in Form der Spannklappe, gefasst. In gespanntem Zustand wird die Spannklappe bzw. das Nadelklemmteil radial gegen den Kolben der Nadel gedrückt, wodurch die Nadel ihrerseits in das Nadelaufnahmeteil gedrückt und somit festgeklemmt wird. Diese Klemmstellung wird durch das Fixierelement gesichert. Wird das Fixierelement hingegen gelöst, kann die Spannklappe von dem Kolben der Nadel weg geklappt werden. Sie gibt somit von dem den Kolben umgebenden zylindrischen Raumbereich eine Hälfte frei. Mit anderen Worten, das Nadelklemmteil wird beim Festklemmen des Endes der Nadel in einen Raum hinein bewegt, der zu dem Ende der Nadel radial oberhalb des Sitzes derselben liegt. Beim Freigeben wird das Nadelklemmteil, d.h. die Spannklappe aus diesem Raumbereich heraus bewegt. Die Sticknadel kann somit aus der Nadelhalterung leicht entnommen werden. Eine neue Nadel kann einfach in die Nadelhalterung eingelegt werden. Es ist nicht erforderlich, diese axial in irgendwelche Öffnungen einzufädeln oder einzupassen.
• Vorzugsweise ergänzen sich das Nadelklemmteil und das Nadelaufnahmeteil gemeinsam im Wesentlichen zu einer zylindrischen Außenkontur, wenn sich das Nadelklemmelement, z.B. die Spannklappe, in Klemmstellung befindet. Dies ermöglicht einen schlanken Aufbau und andererseits auch ein einfaches Fixieren des Nadelklemmteils in Spannposition. Dies gilt unabhängig davon, ob die Spannklappe um eine Schwenkachse schwenkbar ist, die quer zu der Nadellängsrichtung und etwa parallel zu einer Trennfläche zwischen dem Nadelaufnahmeteil und dem Nadelklemmteil oder um eine Schwenkachse schwenkbar ist, die parallel zu der Nadelachse orientiert ist. In beiden Fällen kann das Fixierelement einfach über die gebildete zylindrische Außenkontur geschoben werden, um das Nadelklemmteil in Klemmstellung zu sichern.
• Dieses Verschieben des Fixierelements erfolgt vorzugsweise im Rahmen einer Schwenkbewegung. Beispielsweise ist das Fixierelement als Rasthebel ausgebildet, der von der Seite her über das Nadelklemmteil geschoben wird. Das Fixierelement kann dabei in einer Ausführungsform an dem Nadelaufnahmeteil schwenkbar gelagert sein. Die Schwenkachse ist beispielsweise parallel zu der Nadel orientiert. Es ist auch möglich, das Fixierelement um das Nadelaufnahmeteil herum um eine konzentrisch zu der Mittelachse der Nadel liegende Drehachse drehbar zu lagern. Alternativ kann das Fixierelement auch schwenkbar an dem Nadelklemmteil gelagert sein, um in Klemmstellung mit dem Nadelaufnahmeteil verrastet zu werden.
• Das Fixierelement kann durch wenigstens ein Rastmittel in einer Fixierstellung festgehalten werden. Beispielsweise kann das Fixierelement dazu aus einem etwas elastischen Kunststoff ausgebildet sein, der dem Fixierelement eine Nachgiebigkeit bzw. Federwirkung verleiht. In Form eines schwenkbar gelagerten Hebels mit einer Ausnehmung kann dieser Hebel so auf das Nadelklemmteil hin geschwenkt werden, dass er mit seiner Ausnehmung an dem Nadelklemmteil einrastet und dieses zugleich gegen den Kolben der Nadel spannt.
• Es sind unter Anwendung der genannten Prinzipien zahlreiche Abwandlungen möglich. Außerdem ist es möglich, die genannten Merkmale in nahezu beliebiger Kombination miteinander anzuwenden. Die Merkmale können dabei sowohl einzeln als auch in beliebiger Kombination oder Teilkombination Anwendung finden.
• Die nachfolgende Beschreibung beschränkt sich auf mehrere Ausführungsbeispiele der Erfindung zur Erläuterung wesentlicher Elemente derselben, sowie sonstiger Gegebenheiten. Die Zeichnung offenbart weitere Details und ist ergänzend heranzuziehen. Es zeigen:
  • Figur 1 eine erste Variante einer Nadelhalterung mit Nadelschnellspannung in perspektivischer Darstellung in geöffnetem Zustand.
  • Figur 2 die Nadelhalterung nach Figur 1 in gespanntem Zustand,
  • Figur 3 das Nadelaufnahmeteil und das Nadelklemmteil der Nadelhalterung nach Figur 1 und 2 in ausschnittsweiser Seitenansicht,
  • Figur 4 einen Kolben einer Nadel zusammen mit einem Querstift, der zu dem Nadelaufnahmeteil nach Figur 3 gehört, in Seitenansicht,
  • Figur 5 eine zweite Variante einer Nadelhalterung mit zwei Fixierelementen in perspektivischer Darstellung in geöffnetem Zustand,
  • Figur 6 die Nadelhalterung nach Figur 5 in gespanntem Zustand,
  • Figur 7 eine dritte Variante der Nadelhalterung in fest gespanntem Zustand in perspektivischer Darstellung,
  • Figur 8 die Nadelhalterung nach Figur 7 in geöffnetem Zustand in perspektivischer Darstellung,
  • Figur 9 eine vierte Variante der Nadelhalterung in geschlossenem Zustand in perspektivischer Darstellung,
  • Figur 10 eine fünfte Variante der Nadelhalterung in geöffnetem Zustand in perspektivischer Darstellung,
  • Figur 11 die Nadelhalterung nach Figur 10 in geschlossenem Zustand in perspektivischer Darstellung,
  • Figur 12 eine sechste Variante der erfindungsgemäßen Nadelhalterung in perspektivischem Zustand und
  • Figur 13 eine siebte Variante der erfindungsgemäßen Nadelhalterung in perspektivischer Darstellung.

This object is achieved with a needle holder according to claim 1:

• The needle holder according to the invention has a needle receiving part with a needle clamping part and a fixing element, by means of which the needle clamping part can be fixed in a clamping position. The needle holder is mounted in extension on a needle bar. It can also be integrally, seamlessly connected to it. The fixing is pushed to fix the needle clamping part on this and moved to release the same of this. Thus, the needle can be attached in a particularly simple manner with a very simple handle on the needle bar and just as easily released from this again. The direction for inserting or for removing the needle is transverse to the longitudinal direction of the needle or the needle bar possible. Thus, the needle change is not affected by objects that are located in front of the needle tip The necessary manual effort required for needle change is therefore very low. On the other hand, the needle is securely held on the needle bar.
• The needle receiving part of the needle holder or the needle bar preferably has, as a seat for receiving the needle, an elongate groove-like recess which is adapted to one end of the needle. This also called "piston" end of the needle forms a holding portion. In the groove-like recess, a transverse pin or a transverse rib can be arranged. This pin or rib may be associated with a notch provided in the end of the needle. However, it can also needles, according to the prior art, flattened with Piston or end, as they are used today in large numbers in the textile industry, are used in such a needle holder. It is thus backwards compatible.
• The needle clamping part is preferably designed as a clamping flap, which is pivotally mounted on the end of the needle and away from it. The end of the needle is received on one side by the needle receiving part. Its other side is caught by the needle clamping part, for example in the form of the clamping flap. In the tensioned state, the clamping flap or the needle clamping part is pressed radially against the piston of the needle, whereby the needle is in turn pressed into the needle receiving part and thus clamped. This clamping position is secured by the fixing. On the other hand, if the fixing element is released, the clamping flap can be folded away from the piston of the needle. It thus releases one half of the cylindrical space surrounding the piston. In other words, upon clamping the end of the needle, the needle clamp member is moved into a space radially above the seat of the needle to the end of the needle. When releasing the needle clamp, ie the clamping flap is moved out of this space area. The embroidery needle can thus be easily removed from the needle holder. A new needle can simply be inserted into the needle holder. It is not necessary to thread or fit these axially into any openings.
• Preferably, the needle clamping part and the needle receiving part complement each other substantially to a cylindrical outer contour when the needle clamping element, eg the clamping flap, is in the clamping position. This allows a slim design and on the other hand, a simple fixing of the needle clamp in clamping position. This applies regardless of whether the clamping flap about a pivot axis is pivotable, which is transverse to the needle longitudinal direction and approximately parallel to a parting surface between the needle receiving part and the needle clamping part or pivotable about a pivot axis which is oriented parallel to the needle axis. In both cases, the fixing element can be easily pushed over the formed cylindrical outer contour to secure the needle clamp in clamping position.
• This displacement of the fixing element is preferably carried out in the context of a pivoting movement. For example, the fixing element is designed as a latching lever which is pushed from the side over the needle clamping part. In this case, the fixing element can be pivotably mounted on the needle receiving part in one embodiment. The pivot axis is oriented, for example, parallel to the needle. It is also possible to rotatably support the fixing element around the needle receiving part about a rotation axis concentric with the central axis of the needle. Alternatively, the fixing element may also be pivotally mounted on the needle clamping part to be locked in the clamping position with the needle receiving part.
• The fixing element can be held by at least one locking means in a fixing position. For example, the fixing element may be formed from a somewhat elastic plastic, which gives the fixing a resilience or spring action. In the form of a pivotally mounted lever with a recess of this lever can be pivoted so on the needle clamping part that it engages with its recess on the needle clamping part and this simultaneously clamped against the piston of the needle.
• Numerous modifications are possible using the above principles. In addition, it is possible to apply the features mentioned in almost any combination with each other. The features can be both individually and as well find application in any combination or sub-combination.
• The following description is limited to several embodiments of the invention for explaining essential elements thereof, as well as other conditions. The drawing reveals more details and is complementary. Show it:
  • FIG. 1 a first variant of a needle holder with fast needle tension in a perspective view in the open state.
  • FIG. 2 the needle holder after FIG. 1 in a stretched state,
  • FIG. 3 the needle receiving part and the needle clamping part of the needle holder after FIGS. 1 and 2 in a sectional side view,
  • FIG. 4 a plunger of a needle together with a transverse pin following the needle receiving part FIG. 3 heard, in side view,
  • FIG. 5 a second variant of a needle holder with two fixing elements in a perspective view in the open state,
  • FIG. 6 the needle holder after FIG. 5 in a stretched state,
  • FIG. 7 a third variant of the needle holder in tight tensioned state in perspective view,
  • FIG. 8 the needle holder after FIG. 7 in open State in perspective,
  • FIG. 9 a fourth variant of the needle holder in the closed state in perspective view,
  • FIG. 10 a fifth variant of the needle holder in the open state in a perspective view,
  • FIG. 11 the needle holder after FIG. 10 in closed state in perspective,
  • FIG. 12 a sixth variant of the needle holder according to the invention in a perspective state and
  • FIG. 13 a seventh variant of the needle holder according to the invention in a perspective view.

In FIG. 1 a needle holder 1 according to the invention is illustrated, which is designed as a quick-clamping holder. It has a needle receiving part 2, which is adapted for attachment to a needle bar. For this purpose, the needle receiving part 2 is provided at one end with a pin 3. From this, the remaining body 4 of the needle receiving part 2 extends away. The body 4 has at its end opposite the pin 3 approximately in the form of a longitudinally divided half-cylinder, which has a substantially longitudinally extending, preferably flat surface 5. This is penetrated by a groove-like recess which forms a seat 6 for receiving the end 7 of a needle. This end 7 ("piston") is used for storage or attachment of the needle. The needle is for example an embroidery needle.

The seat 6 is associated with a needle clamping part 8, which is designed as a pivotable jaw. It has a semi-cylindrical shape and turns the preferably flat surface 5 to a preferably flat surface 9 too. The surface 9 may, if necessary, be provided with a groove or other recesses. In the present embodiment, the end 7 of the needle is flattened, with the flattened side facing the surface 9. Incidentally, the needle clamping part 8 is substantially semi-cylindrical, wherein it has an extension 10 at one end, which serves for the pivotable mounting of the clamping part 8 on the body 4. The extension 10 protrudes into a corresponding recess of the body 4 and is held there by a transverse pin not further illustrated. This sits in a corresponding transverse bore 11 and defines a pivot axis 12 for the clamping part 8. Thereby, the clamping member 8 can be pivoted to the end 7 of the needle and away from it. The pivot axis 12 is preferably oriented transversely to a longitudinal central axis 13 of the needle. In addition, the pivot axis 12 is preferably oriented parallel to the surface 5. FIG. 1 illustrates the needle clamp 8 in a release position. In this release position, an acute opening angle of at least 45 degrees, preferably at least 75 degrees, is formed between the surface 9 of the needle clamping part 8 and the surface 5 of the body 4. As a result, the needle with the end 7 can be easily removed from its seat 6. This is done with unfolded clamping part 8 with completely free lying seat.

To the needle holder 1 also includes a fixing member 14 which is formed in the present embodiment by a locking lever 15. This is preferably pivotally mounted on the needle receiving part 2 about a pivot axis 16, e.g. is determined by a pin 17 which extends through an opening of the locking lever 15. The pin 17 and the pivot axis 16 preferably extend parallel to the longitudinal center axis 13 defined by the seat 6 and thus transversely to the pivot axis 12.

The locking lever 15 consists for example of a somewhat resilient plastic. It is provided with an opening or recess 18 which follows approximately the cylindrical contour which define the needle receiving part 2 and the needle clamping part 8 together when the needle clamping part 8, as FIG. 2 shows, in clamping position. The contour of the recess 18 follows the contour of the cylinder up to a nose 19, with which the locking lever 15, the needle clamping part 8 engages over and clamped against the end 7 of the needle.

The lever 15 is seated with a bearing end 20 on the pin 17 and has lying opposite a handle end 21 which serves as a handle to the lever 15 from his in FIG. 1 illustrated release position in the in FIG. 2 illustrated to transfer fixation position. At the locking lever 15 may also be a yarn guide 22 is held in the form of an eyelet. For this purpose, in particular the away from the recess 18 is suitable pointing rear side of the locking lever 15. The yarn guide 22 may be formed by a bolted sheet metal bent part.

The locking lever 15 is also preferably secured with a locking ring 23 on the pin 17.

In some embodiments, the locking lever 15, as mentioned, completely made of a slightly elastic plastic and thus even provide the required for the locking effect spring action with respect to the radial direction of the pin 17. It is also possible, the locking lever 15 of a rigid material, such as metal, form and provide in the region of its recess 18 elastic means, for example in the form of spring-mounted tongues or other elements, elastic liners or the like. In addition, it is possible to store the pin 17 elastically or to arrange between the pin 17 and the bearing end 20 an elastic bush or similar elastic means. All of these measures and other appropriate measures are suitable to enable the nose 19 a resilient deflection when it is pushed over the rounded outer side of the needle clamping part 8.

FIG. 3 illustrates the needle holder 1, omitting the locking lever 15 in side view in the closed state. As can be seen, the end 7 of the needle between the needle clamp 8 and the needle receiving part 2 is clamped. The positioning of the end 7 will, as FIG. 4 determined by a pin 24 which engages in a notch 25 of the piston or end 7 of the needle. The pin 24 is at least approximately parallel to a seated in the transverse bore 11 pin 26 which forms the hinge joint for the needle clamping part 8. The pin 24 passes through the trough or trough-shaped seat. 6

• Zum Wechseln der Nadel wird der Rasthebel 15, wie Figur 1 veranschaulicht, in eine Freigabestellung überführt, indem er von dem Nadelklemmteil 8 weg geschwenkt wird. Dieses ist nun frei beweglich und kann von der Nadel bzw. ihrem Ende 7 weg geschwenkt werden. Das Nadelklemmteil 8 gibt somit einen bezüglich der Längsmittelachse 13 halbzylindrischen Raum zumindest weitgehend, vorzugsweise vollständig frei, so dass die Nadel in dem Sitz 6 offen zu Tage liegt. Sie kann z.B. von Hand entnommen werden und bei Bedarf wieder in den Sitz eingesetzt oder durch eine andere Nadel ersetzt werden. Dabei ist die Entnahmerichtung der Nadel quer zur Längsrichtung der Nadel. Zum Festspannen derselben wird das Nadelklemmteil 8 aus der in Figur 1 veranschaulichten Freigabestellung auf das Ende 7 der Nadel gelegt. Das Klemmteil befindet sich somit schon in Klemmstellung, wobei es die Nadel noch nicht hält. Dazu wird der Rasthebel 15 in einer Schwenkbewegung über das Nadelklemmteil 8 geschoben, wie es Figur 2 zeigt. Aufgrund des angepassten Durchmessers der Ausnehmung 18 sowie der Flexibilität bzw. Elastizität des Rasthebels 15 wird das Klemmelement 8 gegen das Ende 7 gedrückt und somit in Klemmstellung fixiert. Der Rasthebel 15 bildet somit ein Fixierelement für das Klemmteil 8.
• Die Nadelhalterung bildet einen Schnellspannhalter, der mit besonders einfachen und wenigen Handgriffen geöffnet und geschlossen werden kann, so dass der Nadelwechsel besonders einfach ist.
• Figur 5 veranschaulicht eine abgewandelte Ausführungsform der Nadelhalterung 1. Im Unterschied zu der vorigen Beschreibung trägt der Zapfen 17 zwei gegensinnig schwenkbare Rasthebel 15a, 15b, die von einander gegenüber liegenden Seiten her über das Nadelklemmteil 8 geschoben werden können. Ansonsten gilt die vorige Beschreibung unter Zugrundelegung gleicher Bezugszeichen entsprechend, wobei lediglich die die Rasthebel 15a, 15b betreffenden Details zur Unterscheidung mit Buchstabenindice versehen sind. Die Klemmhebel 15a, 15b bilden, wie insbesondere Figur 6 zeigt, gemeinsam ein Fixierelement für das Nadelklemmteil 8. Die Griffenden 21a, 21b können in Fixierstellung miteinander fluchten oder, wie dargestellt, versetzt angeordnet sein.
• Bei den vorigen Ausführungsformen des Nadelhalters ist das Fixierelement an den Nadelaufnahmeteil 2 bzw. dem Körper 4 gelagert, der vorzugsweise einstückig, nahtlos mit dem Nadelaufnahmeteil verbunden ist. Es ist aber, wie die Figuren 7 und 8 zeigen, auch möglich, das Fixierelement an dem Nadelklemmteil 8 zu lagern. Dazu ist das Nadelklemmteil 8 das an seiner Außenseite wiederum vorzugsweise eine zylindrisch gewölbte Fläche aufweisen kann (aber nicht muss) mit einem Fortsatz 27 versehen, von dem sich ein Zapfen 28 parallel zu der Längsmittelachse eines Zylinders erstreckt, der von dem Nadelaufnahmeteil 2 und dem Nadelklemmteil 8 definiert wird. Auf dem Zapfen 28 kann als Fixierelement wiederum ein Rasthebel 29 sitzen, der zur Aufnahme des Zapfens 28 eine entsprechende Öffnung 30 aufweist. Der Rasthebel 29 weist ein hakenförmiges Ende 31 auf, das den Nadelsitz untergreifen kann. An seinem gegenüber liegenden Ende kann es mit einer Einrichtung zur Fadenführung 32 versehen sein.
• Die Betätigung erfolgt wie aus den Figuren 7 und 8 ersichtlich. Wird das hakenförmige Ende 31 unter das Nadelaufnahmeteil 2 geschoben, bildet der äußerste Abschnitt des Endes 31 eine Nase 19, die den Rasthebel 29 in dieser Position verrastet. Gleichzeitig wird das Nadelklemmteil 8 gegen das Nadelaufnahmeteil 2 gespannt. Wird das Ende 31 hingegen durch entsprechende Verschwenkung des Rasthebels 29 von dem Nadelaufnahmeteil 2 weg bewegt, ist das Nadelklemmteil 8 entspannt. Es kann nun in Offenstellung geklappt werden. Dies funktioniert mit einem Nadelklemmteil 8, das, wie die Figuren 1 und 2 zeigen, um eine quer zu der Nadel liegende Schwenkachse 12 schwenkbar ist. Es funktioniert auch bei Ausführungsformen, bei denen das Nadelklemmteil 8, wie insbesondere Figur 8 zeigt, um eine Schwenkachse 12a bewegbar ist, die parallel zu der Längserstreckung des Sitzes 6 und somit der ergänzend in Figur 8 angedeuteten Längsmittelachse 13 orientiert ist. Ansonsten gilt die vorige Beschreibung, insbesondere auch hinsichtlich des Stifts 24 entsprechend.

The needle holder 1 described so far operates as follows:

• To change the needle, the locking lever 15, as FIG. 1 illustrated, transferred to a release position by being pivoted away from the needle clamp 8. This is now freely movable and can be pivoted away from the needle or its end 7. The needle clamping part 8 thus gives at least largely, preferably completely, a half-cylindrical space with respect to the longitudinal central axis 13, so that the needle in the seat 6 is exposed to the surface. For example, it can be removed by hand and reinserted into the seat as needed or replaced with another needle. The removal direction of the needle is transverse to the longitudinal direction of the needle. For tightening the same, the needle clamping part 8 of the in FIG. 1 illustrated release position placed on the end 7 of the needle. The clamping part is thus already in clamping position, where it still does not hold the needle. For this purpose, the locking lever 15 is pushed in a pivoting movement over the needle clamping part 8, as it FIG. 2 shows. Due to the adapted diameter of the recess 18 and the flexibility or elasticity of the locking lever 15, the clamping element 8 is pressed against the end 7 and thus fixed in the clamping position. The locking lever 15 thus forms a fixing element for the clamping part. 8
• The needle holder forms a quick-release holder, which can be opened and closed with particularly simple and few handles, so that the needle change is particularly simple.
• FIG. 5 illustrates a modified embodiment of the needle holder 1. In contrast to the previous description, the pin 17 carries two oppositely pivotable locking lever 15 a, 15 b, the opposing sides can be pushed over the needle clamp 8. Otherwise, the previous description applies based on the same reference numerals, wherein only the details of the locking lever 15a, 15b details are provided for distinguishing with Buchstindice. The clamping levers 15a, 15b form, in particular FIG. 6 shows, together a fixing element for the needle clamping part 8. The handle ends 21a, 21b can be aligned with each other in the fixing position or, as shown, arranged offset.
• In the previous embodiments of the needle holder, the fixing element is mounted on the needle receiving part 2 and the body 4, which is preferably integrally, seamlessly connected to the needle receiving part. But it is like that FIGS. 7 and 8th show, also possible to store the fixing element on the needle clamping part 8. For this purpose, the needle clamping part 8 which on its outside again preferably (but not necessarily) may have a projection 27 from which a pin 28 extends parallel to the longitudinal central axis of a cylinder, that of the needle receiving part 2 and the needle clamping part 8 is defined. On the pin 28 can in turn a locking lever 29 sit as a fixing, which has a corresponding opening 30 for receiving the pin 28. The locking lever 29 has a hook-shaped end 31 which can engage under the needle seat. At its opposite end, it may be provided with means for thread guide 32.
• The operation takes place as from the FIGS. 7 and 8th seen. If the hook-shaped end 31 is pushed under the needle receiving part 2, the outermost portion of the end 31 forms a nose 19 which locks the locking lever 29 in this position. At the same time, the needle clamping part 8 is clamped against the needle receiving part 2. If the end 31, however, by corresponding pivoting of the locking lever 29 of the needle receiving part Moved away 2, the needle clamp 8 is relaxed. It can now be worked in open position. This works with a needle clamp 8, which, like the Figures 1 and 2 show, about a transverse to the needle pivot axis 12 is pivotable. It also works in embodiments in which the needle clamping part 8, in particular FIG. 8 shows, about a pivot axis 12a is movable parallel to the longitudinal extent of the seat 6 and thus the complementary in FIG. 8 indicated longitudinal center axis 13 is oriented. Otherwise, the previous description applies, in particular also with regard to the pin 24 accordingly.

A further modified embodiment of the invention illustrated FIG. 9 , This is based essentially on the embodiment according to the Figures 1 and 2 , to the description of which reference is made by reference to the same reference numerals. However, differences lie in the design of the fixing element, which is not designed here as a detent lever but as a clamping lever 33. This is provided in place with a detent with a pivotally mounted eccentric 34. The eccentric clamp 34 is formed by a clamping cam 35 which is pivotally mounted on the clamping lever 33 and is preferably arranged at the outermost end or edge of its recess 18. It replaces the (latching) lug 19. A pin 36 extending radially away from the clamping cam 35 serves as a lever for clamping and releasing the clamping cam 35.

Another possible modification show the FIGS. 10 and 11 , This embodiment utilizes similar principles to the embodiments described herein. However, unlike the above embodiments, it is particularly suitable for direct installation in a needle bar 37 while according to the above-described concept, the needle holder 1 is provided as a needle bar attachment.

The needle bar 37 thus forms according to FIGS. 10 and 11 their own needle holder 1 ', for which their needle end is designed accordingly. In the end of the needle bar, a longitudinal groove is inserted so that the end of the needle bar 37 forms the needle receiving part 2 'with the seat 6'. The end 7 of the needle can be inserted into this seat 6 '. In the groove forming the seat 6 ', the needle clamping part 8' is designed in the form of a tongue or finger, which is pivotably mounted in the groove and can be folded into the groove. The needle clamp 8 'is dimensioned so that it protrudes slightly beyond the outer circumference of the end of the needle bar 37 when it is in the clamping position, ie in the groove. Its back edges are how FIG. 11 can recognize, provided with chamfers 38, 39, ie bevelled so that a fixing member smoothly over the needle clamping part 8 'and its share, which protrudes beyond the outer circumference of the needle bar 37, can be pushed to fix a needle.

Around the end of the needle bar 37, ie around the needle receiving part 2 ', a flat groove 40 is formed around which a fixing element is seated. This is formed here by a rotary body 41 which sits with an opening on the needle receiving part 2 'in the groove 40 and thereby engages the needle receiving part 2'. However, the edge of the opening of the rotary body 41 is not closed continuously. Rather, the edge has a passage 42 which can serve as a passage for the needle clamping part 8 '. FIG. 10 illustrates the release position and FIG. 11 the clamping position. In the clamping position, the rotary body 41 is pushed over the needle clamping part 8 'such that it clamps it against the end 7 of the needle. For movement of the clamp body 41, a handle 43 connected to it can serve. Otherwise, the previous description is based on the same reference numerals in addition accordingly.

Further modifications are possible. For example, the rotary body 41 may be formed rounded on its outside, such as FIG. 12 otherwise, the description of the embodiments according to FIG FIGS. 10 and 11 applies accordingly.

The rotary body 41 may e.g. made of plastic or even from another less compliant material, such as a metal. It is adapted to bias the needle clamp 8 'against the end 7 of the needle as it is slipped over the outer back surface of the needle clamp 8' by being rotated about the longitudinal center axis 13. This thus forms an axis of rotation for the rotary body 41.

The rotary body 41 may also be formed as a slender C-clip, such as FIG. 13 shows. This is slightly resilient in the radial direction and presses in clamping position the needle clamping part 8 'against the end 7 of the needle. If the rotary body 41 is rotated away from the needle clamping part 8 ', it releases it. It can be analogous to FIG. 10 be folded out of the groove, whereby the needle is released.

In a further embodiment, not shown, the rotary body 41 is formed as a slender sleeve, which is moved to clamp the needle clamping part 8 'in the needle longitudinal direction on the needle clamping part 8'. For this purpose, the groove 40 is wider in the axial direction, so that the displacement of the rotary body and the sliding body 41 is possible. To release the needle clamping part 8 ', the sliding body 41 is shifted in the direction of the needle bar 37 so far that the needle clamping part 8' can be opened.

All embodiments described above have in common that a however movable, in particular pivotally mounted needle clamping part 8, 8 'by a fixing 14 is secured in clamping position, wherein the fixing element 14 is rotatably or pivotally mounted about a pivot axis 16 or 13, which coincides with the longitudinal central axis of the needle or is oriented parallel thereto. This makes a simple and quick handling possible.

A quick-clamping holder for a sewing needle, embroidery needle or the like has a needle holder 2, on which a needle clamping part 8 is preferably pivotally mounted. For clamping and fixing the needle clamping part 8 in the clamping position, a fixing element 14 is provided which is pivotally or rotatably mounted with respect to a longitudinal central axis 13 of the needle and thus pushed onto the needle clamping part 8 and can be pushed down by this. The operation is simple and safe.

reference numeral

1, 1 '

needle holder

2, 2 '

Needle receiving part

3

spigot

4

body

5

area

6, 6 '

Seat

7

The End

8, 8 '

Needle clamping part

9

area

10

extension

11

cross hole

12 (a)

swivel axis

13

Central longitudinal axis

14

fixing

15 (a, b)

locking lever

16

swivel axis

17

spigot

18

recess

19

nose

20

Bearing end

21 (a, b)

Handle end

22

thread guides

23

circlip

24

pen

25

score

26

pen

27

extension

28

spigot

29

locking lever

30

opening

31

The End

32

Device for thread guide

33

clamping lever

34

Eccentric

35

tightening cams

36

pen

37

needle bar

38, 39

chamfers

40

groove

41

rotating body

42

passage

43

Handle

Claims (10)

Needle holder (1), in particular for shipping needles,
a needle receiving part (2) having a seat (6) adapted to receive one end (7) of a needle,
a needle clamping part (8) connected to the needle receiving part (2) and movable between a clamping position and a release position,
with at least one fixing element (14) which is movable between a fixing position in which it holds the needle clamping part (8) in the clamping position and a release position in which it releases the needle clamping part (8),
wherein the fixing member (14) is pushed onto the needle clamping part (8) or the needle receiving part (2) for fixing the needle clamping part (8) and moved away from the needle receiving part (2) for releasing the needle clamping part (8). Needle holder according to claim 1, characterized in that the needle receiving part (2) as a seat (6) has an elongated groove-like recess. Needle holder according to claim 2, characterized in that in the groove-like recess a transversely arranged pin (24) or a transverse rib is arranged. Needle holder according to claim 1, characterized in that the needle clamping part (8) on the needle receiving part (2) is rotatably or pivotally mounted. Needle holder according to claim 1, characterized in that the needle clamping part (8) when clamping the end (7) of the needle is moved into a space which is radially to the end (7) of the needle and above the seat (6) thereof, and the needle clamping part (8) is moved out of this spatial area when it is released. Needle holder according to claim 1, characterized in that the needle clamping part (8) and the needle receiving part (2) complement each other substantially to a cylindrical outer contour when the needle clamping element (8) is in the clamping position. Needle holder according to claim 1, characterized in that the pivot axis (12) of the needle clamping part (8) is oriented transversely to the needle and parallel to a parting surface (5) between the needle clamping part (8) and the needle receiving part (2). Needle holder according to claim 1, characterized in that the pivot axis (12a) of the needle clamping part (8) is oriented parallel to the longitudinal center axis (13) of the needle. Needle holder according to claim 1, characterized in that the fixing element (14) about a pivot or rotation axis (16, 13) is pivotally mounted or rotatably oriented parallel or concentric with a longitudinal center axis (13) of the needle. Needle holder according to claim 1, characterized in that the fixing element (14) at least one locking means (19) is assigned to hold the fixing element (14) in the fixing position.

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