DE275477C

DE275477C -

Info

Publication number: DE275477C
Application number: DENDAT275477D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

- JVl 275477 -KLASSE 52 b. GRUPPE - JVl 275477 - CLASS 52 b. GROUP

Für diese Anmeldung ist bei der Prüfung gemäß dem Unionsvertrage vomFor this registration, the examination according to the Union Treaty of

20. März 1883March 20, 1883

14. Dezember 1900 auf Grund der Anmeldung in Großbritannien vom 19. Juli 1911 anerkannt.Recognized on December 14, 1900 on the basis of registration in Great Britain on July 19, 1911.

die Prioritätthe priority

Die Erfindung betrifft einen Automaten zum Antrieb von Pantographen für Stickmaschinen und bezweckt, eine derartige Vorrichtung möglichst einfach auszubilden. Dies S wird dadurch erreicht, daß auf einer Tragplatte zwei einen rechten Winkel miteinander bildende Paare von sich ununterbrochen drehenden, parallelen Wellen angeordnet sind, mit welchen die angetriebenen, sich in rechtem Winkel zueinander bewegenden und dadurch den Pantographen verstellenden Teile selbsttätig mit Verwendung einer bekannten kontaktmachenden Jacquardkarte elektromagnetisch gekuppelt werden können. Dies erfolgt vorzugsweise dadurch, daß die vier im Rechteck auf der Tragplatte angeordneten Wellen durch Kegelräder auf Drehung verbunden sind und Hülsen tragen, die mustergemäß mit den Wellen kuppelbar sind und ihre Bewegung paarweise auf einen auf den Hülsen verschiebbaren Rahmen und auf einen auf diesem gleitbaren Schieber übertragen.The invention relates to a machine for driving pantographs for embroidery machines and aims to make such a device as simple as possible. This S is achieved that on a support plate two pairs of continuously rotating, forming a right angle parallel shafts are arranged, with which the driven, in right Angle to each other moving and thereby the pantograph adjusting parts automatically with the use of a known contact making jacquard card electromagnetically can be coupled. This is preferably done by placing the four in a rectangle Shafts arranged on the support plate are connected to rotation by bevel gears and carry sleeves that conform to the pattern can be coupled to the shafts and their movement is slidable in pairs on one on the sleeves Frame and transferred to a slider on this slide.

Es sind bereits Vorrichtungen bekannt geworden, die ebenfalls mittels zweier in rechtem Winkel zueinander beweglicher Teile den Fahrstift eines Pantographen unter Überwachung durch eine Jacquardkarte selbsttätig antreiben. Aber die bekannten Einrichtungen benötigen zwischen einer solchen Karte und den sich senkrecht in bezug aufeinander be-35 Devices have already become known which also automatically drive the driving pin of a pantograph by means of two parts that are movable at right angles to one another, monitored by a jacquard card. But the known devices require between such a card and vertically with respect to each loading 35

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wegenden und den Pantographenfahrstift verstellenden Schiebern oder Rahmen einen verwickelten Mechanismus. Diese bekannten Einrichtungen sind daher schwer versendbar und aufstellbar und sind sehr kostspielig. Demgegenüber zeichnet sich der Automat nach der Erfindung durch große Einfachheit aus, da alle zur Verstellung des Pantographen erforderlichen Teile auf einer gemeinsamen Tragplatte angeordnet sind, so daß die Vorrichtung eine in sich geschlossene, leicht versendbare und billige Vorrichtung darstellt.Because of the end and the pantograph driving pin adjusting slides or frames an intricate one Mechanism. These known devices are therefore difficult to ship and set up and are very expensive. In contrast the automat according to the invention is characterized by great simplicity, since all necessary for adjusting the pantograph Parts are arranged on a common support plate, so that the device is a self-contained, easily dispatchable and represents cheap device.

Die Erfindung ist nicht auf den Antrieb von Pantographen beschränkt, sondern überhaupt auf solche Vorrichtungen anwendbar, wo es sich darum handelt, irgendeinen Teil, z. B. eine Spitze, in einer vorgeschriebenen geradlinigen oder kurvenförmigen Bahn zu führen; nur der Einfachheit halber soll im.folgenden von Pantographen allein gesprochen werden. The invention is not limited to the drive of pantographs, but rather generally applicable to such devices where it is a question of removing any part, e.g. B. a tip, in a prescribed guide straight or curved path; for the sake of simplicity, the following be spoken of by pantographs alone.

Auf der Zeichnung veranschaulichtIllustrated on the drawing

Fig. ι einen Grundriß einer solchen Antriebsvorrichtung, Fig. Ι a plan view of such a drive device,

Fig. 2 einen Schnitt nach der Linie 2-2 in Fig. i, in der Pfeilrichtung gesehen, undFIG. 2 shows a section along the line 2-2 in FIG. I, seen in the direction of the arrow, and FIG

Fig. 3 in größerem Maßstabe einen die Kupplungen steuernden Streifen.3 shows, on a larger scale, a strip controlling the clutches.

Bei der dargestellten Ausführungsform sind vier Hauptantriebswellen A₁ A¹, A², A^s inIn the embodiment shown, four main drive shafts A _1, A ¹ , A ² , A ^{s are} in

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Claims

Bearings B are provided which carry bevel gears C at their ends. These wheels intermesh in pairs so that when one of the shafts is rotated, the others rotate with it. Sleeves D, D ¹ , D ² , D ^{3 are} loosely rotatably mounted on the shafts and secured against displacement in their longitudinal direction by collars, neck rings or other stops. Between each wave and hers

ίο sleeve are switched on for the embroidery machine drive known electromagnetic clutches E , which can be engaged and disengaged in the manner described below depending on the desired movement.

At each end of the sleeves D ¹ and D ³ , chain wheels F ¹ and F ^{3 are} keyed; Similar chain wheels F and F ² are provided for the sleeves D and D ² . Each of these chain wheels F and F ² is carried by a sleeve G which is mounted on the associated sleeve that it can be moved on it, but cannot rotate against the sleeve; The easiest way to do this is by means of a spring wedge provided in the sleeve G , which is guided in a groove G ^{1 in} the sleeve. Between the sleeves D and D ² there extends a transverse frame H with forked or annular ends which can grip over the sleeves D and D ² and slide on them. These frame ends encompass the sleeves G in such a way that with each movement of the frame parallel to the sleeves D and D ² , the sleeves G with the chain wheels F and F ² are displaced by the same amount on the sleeves D and D ^2.

A slide H ^{1 is} mounted on the transverse frame H , on which a chain running over the chain wheels F and F ² engages with its ends at H ² (FIG. 2). The chains J ¹ running over the sprockets F ¹ and F ³ are fastened to lugs of the frame H at H ^ or are connected to this frame in some other way.

One of the main shafts, e.g. B. A, can be connected directly or through a transmission gear to a motor, which is not shown in the drawing, and also an electrical contact drum K is mounted on a shaft, expediently also A. Each of the electromagnetic clutches E is connected by means of a pole terminal to one of the four contact fingers K ¹ , which can engage the contact drum K , while the other pole terminals are connected to a common line leading to a battery K ² and the circuit to the other pole of this battery and the contact K ³ , which is in permanent electrical connection with the drum K made of conductive material, is closed. Between the fingers K ¹ and the contact drum K, a paper strip is in a known manner passed provided with slit-shaped openings L (Fig. 3) is provided, which lie in the path of the contact fingers K ^1, so that depending on the length and location of these Slots one or the other of the clutches E can be engaged for a certain period of time, as is known when driving embroidery frames. By virtue of the device described above, the slide H ^{1 can be moved} in any desired path, both in a straight line and in a curve.

For use in an embroidery machine, the slide H ¹ carries a projection H ³ which can be connected to one arm of a pantograph, the latter being connected to the embroidery frame that carries the fabric to be embroidered. This is of course only an example application, because the new device can also be used for other machines that require such movements.

Sponsorship τ claim:

Electrical machine for driving pantographs for embroidery machines, characterized in that two pairs of parallel, continuously rotating shafts (A ¹ , A ³ , A, A ² ) which form a right angle with each other are arranged on a support plate and are connected to each other by bevel gears are connected to rotation and ^{carry freely rotatable sleeves (D 1} , Z) ³ , D, D ² ) , which can be coupled to the shafts according to the pattern by electromagnetic clutches (F.), so that one pair of sleeves (D ¹ , D ³ ) its movement on a sliding frame (H) that can be moved on the other pair of sleeves ^{(D, D 2} ^{) and the other pair of sleeves (D, D 2} ) transfers its movement to a slide (H ¹ ) that can be slid on the sliding frame (H) and to which the pantograph arm is hinged.

1 sheet of drawings.