DE167911C

DE167911C -

Info

Publication number: DE167911C
Application number: DENDAT167911D
Authority: DE

Description

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KAISERLICHEIMPERIAL

PATENTAMT.PATENT OFFICE.

KLASSE Te. CLASS Te.

Bei der Herstellung von Nähnadeln werden bekanntlich zunächst Doppelnadeln hergestellt, wie sie in Fig. ι der beiliegenden Zeichnung veranschaulicht sind, und bei denen je zwei Nähnadeln α durch einen Bart b vorläufig noch zusammengehalten werden. Diese Doppelnadeln werden in der Regel in größerer Anzahl gleichmäßig auf Drähte aufgereiht, um gemeinsam auf der Schleifmaschine bearbeitet werden zu können. Das Aufreihen der Doppelnadeln erfolgte bisher regelmäßig von Hand, welche Arbeit mühsam und zeitraubend war.In the manufacture of suture needles double needles are known to be produced first as ι in Fig. The accompanying drawings are illustrated, and in which in each case two needles α by a beard b provisionally be held together. These double needles are usually lined up evenly in larger numbers on wires so that they can be processed together on the grinding machine. The stringing of the double needles was previously done regularly by hand, which work was tedious and time-consuming.

Die vorliegende Erfindung sucht nun die Aufgabe zu lösen, die Doppelnadeln auf maschinellem Wege auf Drähte aufzureihen und hierdurch zum Schleifen vorzubereiten. Im wesentlichen wird dieser Zweck dadurch erreicht,· daß die Doppelnadeln von zwei Richtgabeln aufgenommen werden, welche parallel zur Längsrichtung der Nadeln beweglich sind, worauf die Richtgabeln zusammengeführt werden und dadurch die öhre der Nadeln zum Zwecke des Aufreihens in eine gerade Richtung bringen, so daß nunmehr ein Hindurchstecken von Draht durch sämtliche Öhre ermöglicht ist.The present invention seeks to solve the problem of the double needles by machine to line up on wires and thereby prepare for grinding. This purpose is essentially achieved in that the double needles of two Alignment forks are added, which are movable parallel to the longitudinal direction of the needles are, whereupon the alignment forks are brought together and thereby the eye bring the needles in a straight direction for the purpose of stringing so that now a passing of wire through all eyes is made possible.

Eine in solcher Weise arbeitende Vorrichtung zum Aufreihen von Doppelnadeln ist in den Fig. 2 bis 7 der beiliegenden Zeichnung in einer Ausführungsform dargestellt, und zwar zeigen die Fig. 2, 3 und 5 die Seitenansicht, die Fig. 4 und 7 dagegen die Vorderansicht der Vorrichtung bei verschiedenen Stellungen; in Fig. 6 endlich ist die Oberansicht der Vorrichtung in vergrößertem Maßstabe teilweise dargestellt.A device operating in such a way for stringing double needles is shown in FIG FIGS. 2 to 7 of the accompanying drawings shown in one embodiment, and 2, 3 and 5 show the side view, but FIGS. 4 and 7 show the front view the device in different positions; in Fig. 6, finally, is the top view the device partially shown on an enlarged scale.

Die Doppelnadeln a, welche gemäß Fig. 1 noch mit den Barten b versehen sind, werden zunächst zwischen Führungsbacken c und d gebracht (Fig. 2). Die obere Backe d ist gegenüber der unteren um den Gelenkpunkt e aufklappbar. Die untere Backe c, welche an der Platte \ befestigt ist, ist einerseits am oberen Ende des Bockes f mittels der Bolzen g ⁴S gelagert und ruht andererseits bei der in Fig. 2 gezeichneten Stellung lose auf der Stütze h auf. Der Bock f und die Stütze h sind auf der gemeinsamen Platte i befestigt, die in der Grundplatte k mittels Schwalben-Schwanzführung beweglich ist.The double needles a, which are still provided with the bits b according to FIG. 1, are first brought between guide jaws c and d (FIG. 2). The upper jaw d can be opened opposite the lower jaw around the hinge point e . The lower jaw c, which is attached to the plate \ , is on the one hand mounted on the upper end of the bracket f by means of the bolts g ⁴ S and on the other hand rests loosely on the support h in the position shown in FIG. The bracket f and the support h are attached to the common plate i , which is movable in the base plate k by means of a swallow tail guide.

Nachdem die Doppelnadeln α bei hochgeklappter Backe d zunächst ziemlich ungeordnet auf die Backe c aufgelegt sind, bewegt man die ganze Vorrichtung durch Bewegen der ^⁵ Stütze h in kurzen Stoßen hin und her, um auf diese Weise durch Schütteln die Doppelnadeln annähernd gleichmäßig auf der Backe c zu verteilen. Hierauf klappt man die Backe d abwärts. Durch die zwischen beiden Führungsbacken eingespannte Feder Z werden die Backen c d nunmehr geschlossen gehalten.After the double needles α are initially placed on the jaw c in a rather disorderly manner with the jaw d folded up, the entire device is moved ^{back and forth in short strokes by moving the ^ 5} support h in order to shake the double needles almost evenly on the jaw c to distribute. Then you fold the jaw d downwards. The jaws cd are now held closed by the spring Z clamped between the two guide jaws.

Die Führungsbacken c d werden jetzt durch Drehung um die Bolzen g in die in den Fig. 3 und 4 gezeichnete lotrechte Stellung aufwärts gedreht. Hierbei kommen sie genau senkrecht über die darunter befindlichen Richtgabeln m zu liegen, derart, daß der Spalt der Führungsbacken und derjenige der Richtgabeln genau in einer VerlängerungThe guide jaws c d are now rotated upwards into the vertical position shown in FIGS. 3 and 4 by rotation about the bolts g. Here they come to lie exactly vertically above the alignment forks m below them, in such a way that the gap between the guide jaws and that of the alignment forks are exactly in an extension

Claims

lie. When the guide jaws are turned upwards, the springs η clamped on the plate% of the guide jaws are tightened in such a way that they press against the lowermost double needles and thereby initially prevent the latter from sinking prematurely and obliquely. As can be seen from Fig. 3 and 4, both the guide jaws and the directional forks consist of two pairs of rails that come to lie exactly perpendicularly one above the other. The exact superimposition is also ensured by the engaging lugs 0 (Fig. 3). Since the guide jaws and the straightening forks now form a whole, the double needles can be pushed down into the straightening forks m (FIG. 5), the springs η compressing somewhat and resting against the side of the needles. The latter lie closely on top of each other, with all of the beards lying approximately horizontally or at least not deviating significantly from the horizontal position, since the protruding beards of the needles align themselves approximately in the same way due to the tight overlap of the needles (Fig. 4). At the lower end of the guide jaws c d a counting device is also attached, which consists of the troughs ρ located on the forks c and the springs q mounted on the forks d. The latter overlap the troughs ρ in such a way that the excess double needles, which could no longer get into the straightening forks when sliding downwards, are taken back again by the springs q when the guide jaws c d are now folded down. In the straightening forks m, there can only be space for a very specific number of double needles, while the excess needles are kept within the guide jaws for the next operation of the machine. (The springs η alone could not cause the excess needles to be taken back, since they do not rest precisely on the gap, but possibly a little higher or lower on the needles.) After the guide jaws cd have been rotated back into the position shown in dotted lines in FIG. the directional forks are now squeezed horizontally m. The directional forks m are namely attached to the plates r, which are guided horizontally on the trestles / (Fig. 5 and 7). The plates r are gripped by the levers s mounted on the brackets f by means of the articulated rods t and can in this way be pushed in and out by moving the levers s (cf. FIGS. 4 and 7). When the straightening forks m move inwards, the latter come into contact with the disordered double whiskers b of the needles (FIGS. 6 and 7), clamp them between them and cause them to be straightened so that now all ears u are perpendicular to one another in one direction. This makes it possible to insert running wire or also specially prepared wires ν (FIG. 7) through all eyes of the double needles without hindrance. The double needles lined up in this way can easily be lifted out of the straightening forks after pulling the levers s apart in order to get to the grinding machine for further processing. Of course, the structural facilities of the machine could also be other than those described. For example, without using special guide jaws c and d, the double needles could be brought immediately between suitably arranged straightening forks and straightening the double beards of the needles by pressing the latter together. Godfather ϊ-Αν Proverbs:

1. A device for stringing double needles, characterized in that the double needles are received by two straightening forks fm) , which are movable parallel to the longitudinal direction of the needles, whereupon the straightening forks (m) are brought together and the beards of the double needles clamp between them and thereby the Bring the eye of the needles in a straight direction for stringing.

2. Device for lining up double needles according to claim 1, characterized in that hinged guide jaws (cd) are arranged at the upper end of the straightening forks, between which the disordered double needles are evenly distributed by shaking, whereupon the guide jaws (cd) in the vertical position upwards rotated so that the needles can be pushed into the alignment forks (m) below.

3. A device for stringing double needles according to claim 1, characterized in that when the guide jaws (cd) are rotated upward, the springs (n) attached to the latter are tensed and in this case lie against the lowermost double needle, so that the premature and oblique downward sinking Double needles is prevented.

4. Device for lining up double needles according to claim i, characterized in that counting springs (q) are attached to the lower end of the guide jaws (cd) which take back the excess double needles when the guide jaws are folded down.

5. Device for stringing vpn double needles according to claim 1, characterized in that the whole device is movable in a slide guide (ik) in order to shake the double needles by to and fro movement of the same and thereby be able to distribute them evenly.

1 sheet of drawings.