DE650940C

DE650940C - Process for the production of link tube chains

Info

Publication number: DE650940C
Application number: DEG87631D
Authority: DE
Original assignee: Individual
Current assignee: Individual
Priority date: 1934-03-14
Filing date: 1934-03-14
Publication date: 1937-10-04

Description

Die Erfindung betrifft ein Verfahren zur Herstellung einer Gliederrohrkette, die nach der in der Zeichnung dargestellten beispielsweisen Ausführungsform aus einer Anzahl von kurzen, auf beiden Seiten verschieden weiten nahtlosen Rohrstücken besteht, von denen ein jedes mit seinem engeren Teil 1 auf ein Stück in das weitere Teil 2 des nächsten Rohrstücks eingeschoben ist, wobei ein jedes Rohrstück am Ende des engeren Teils bei 3 etwas nach außen aufgebördelt und am Ende des weiteren Teils bei 4 derart eingezogen ist, daß das aufgebördelte Ende des engen Teils von dem eingezogenen Ende des weiten Teils des nächsten Rohrstücks umfaßt wird, so daß die beiden Rohrstücke nicht mehr auseinandergezogen werden können. Bei dieser Verbindungsweise bleibt der Verbindungsstelle zwischen je zwei Rohrstücken eine derartige Beweglichkeit sowohl im Sinne einer Verschiebung der Rohrstücke ineinander als auch im Sinne einer Krümmung der sich aus der Aneinanderreihung der einzelnen Rohrstücke ergebenden Kette erhalten, daß die letztere sowohl einen hohen Grad von Biegsamkeit als auch eine hohe Anpassungsfähigkeit in der Längsrichtung besitzt.The invention relates to a method for producing a link pipe chain, which according to the exemplary embodiment shown in the drawing from a number consists of short pieces of seamless pipe of different widths on both sides, of each with its narrower part 1 on one piece in the further part 2 of the next Pipe section is inserted, each pipe section at the end of the narrower part at 3 is slightly flared outwards and is drawn in at the end of the further part at 4 in such a way that that the flared end of the narrow part from the necked end of the wide part of the next pipe section is included so that the two pipe sections are no longer pulled apart can be. With this type of connection, the connection point remains between every two pieces of pipe such mobility both in the sense of a displacement the pipe pieces into each other as well as in the sense of a curvature resulting from the stringing together the chain resulting from the individual pieces of pipe obtained that the latter has a high degree of flexibility as well as also has a high adaptability in the longitudinal direction.

Erfindungsgemäß erfolgt die Herstellung dieser Gliederrohrkette auf die folgende Weise:According to the invention, this link pipe chain is produced in the following way:

Zunächst wird, wie aus Fig. 1 der Zeichnung ersichtlich, aus dem einen Endstück eines nahtlosen Rohrs 5 mittels entsprechend profilierter Drückwerkzeuge ein Einzelglied des Gliederrohres durch Einschnüren so herausgeformt, daß dabei an dem eingeschnürten Teil ι auch die am freien Ende des engeren Teils des Einzelgliedes benötigte Aufbördelung bei. 3 bereits vorgebildet ist. Nach Entfernung der Drückwerkzeuge wird alsdann gemäß Fig. 2 ein bereits fertiggestelltes Einzelglied oder Endglied eines Rohrstückes etwas in das weite Teil des aus dem Rohr 5 herausgeformten und mit diesem-noch fest verbundenen weiteren Einzelgliedes hineingeschoben. Alsdann wird gemäß Fig. 3 vermittels eines Drückwerkzeuges das übergreifende Ende des weiteren Teils des am Rohr 5 noch festsitzenden Einzelgliedes bei 4 derart nach innen eingezogen, daß es das nach außen aufgebogene Ende 3 des eingeschobenen eingeschnürten Teils ι des fertigen Gliedes ziemlich eng umfaßt. First, as can be seen from Fig. 1 of the drawing, from the one end piece a seamless tube 5 by means of correspondingly profiled pressing tools a single link of the link tube formed by constriction so that it constricted at the Part ι also the flanging required at the free end of the narrower part of the individual link at. 3 is already prepared. After removing the spinning tools, then according to Fig. 2 shows an already completed individual link or end link of a piece of pipe somewhat in the large part of the formed from the tube 5 and still firmly connected to this another single link pushed in. Then according to FIG. 3 by means of a Pressing tool the overlapping end of the other part of the still stuck on the pipe 5 Single link at 4 drawn inwards in such a way that it is bent outwards The end 3 of the inserted constricted part ι of the finished link is fairly tight.

Hierauf wird gemäß Fig. 4 das bis dahin an dem Rohr 5 sitzende Gliedstück bei 6 unmittelbar hinter der aus der Figur ersiehtliehen Aufbiegung 3 des Randes seines dem Mutterrohr zugekehrten engeren Teils abgestochen. Thereupon, according to FIG. 4, the link piece at 6 which had been seated on the tube 5 until then behind the bend 3 of the edge of his demliehen seen from the figure The narrower part facing the mother tube was cut off.

Nunmehr kann der vorbeschriebene Vorgang von neuem erfolgen.The process described above can now be carried out anew.

Da die beschriebenen Einzeloperationen bei geeigneter Anordnung der zu ihrer Durchführung verwendeten Vorrichtung rein mechanisch und in rascher Folge hintereinander durchgeführt werden können und eine Einzelbehandlung der hergestellten Einzelglieder unter Unterbrechung des laufenden Arbeitsvorgangs nicht nötig ist, können mit der ver-Since the described individual operations with a suitable arrangement of the for their implementation The device used can be carried out purely mechanically and in rapid succession and a single treatment of the individual links produced with interruption of the ongoing work process is not necessary, you can use the

Claims

Applied facility very great achievements can be achieved in a very short time, thereby reducing the Production is extremely cheap.

Of course, the individual pieces produced according to the invention can Giederrohr.-; chain apart from the one in Figs. ι to 4 only b.feft: for example the shape shown, apart from the retraction of the edge of the wide Part and the curvature of the edge of the inserted narrower part, any other Have shapes such as B. in a longer embodiment the shape shown in Fig. 5, whereby, albeit of course with a corresponding reduction in flexibility, the Manufacturing is still cheaper.

The described design and type of connection of the individual pieces of the link pipe chain According to the invention, voi everything also has the advantage that it is the continuous Manufacture from a seamless tube permitted.

Link tubes or metal hoses are already known in which individual seamless short pipe sections of different widths on both sides connected to one another in this way 'are * that each of these pipe pieces with its narrower part inserted into the further slightly curved part of the next pipe section and between these two parts arranged conaxially to one another an annular, on the two end faces limited by metal rings seal made of suitable

* soft material is turned on.

With these sectional tubes, the connection is made between two consecutive ones Pipe pieces only by means of the aforementioned seal in contrast to the object of the invention, in which a connection secured against pulling action through the overlapping of the edge of the large part of each pipe section over the bent up Edge of the inserted narrow part of the next piece of pipe is secured, whereby at the same time apart from a displaceability of the individual pipe pieces against each other in the longitudinal direction a significantly greater flexibility due to the stringing together "Hollow chain" formed by this tubular piece is achieved. The manufacture of the aforementioned known articulated tubes is also significantly more expensive because they are not, like the Production of the link pipe chains according to the invention, in one go from one continuous in accordance with the severed items, processed in the manner described above.

• processed pipe can be done, but on the insertion of the sealing rings in a special Procedure is instructed.

Chains have also already been described been with individual links, which consist of a hollow sphere with an opening and this opposite with a tubular flared slightly outward at the free end Approach are provided, with the tubular extension of each link in the ■ corresponding to its outer diameter - ■ JOpening of the spherical part of the adjoining The limb protrudes and through the bulge secured at its free end from slipping out of the opening of the hollow ball is. The flanging should be done after the introduction of the tubular extension piece into the opening of the adjoining hollow sphere. How this is done should be, but has not been specified.

Another suggestion is to introduce an extension to the aforementioned Kind with flared end in the hollow spherical part of an abutting one Chain link can be achieved in that the individual consists of a hollow ball with the aforementioned extension piece Chain links by putting together what were originally punched out of flat parts and hemispherical or semi-cylindrical pressed pieces are formed, what "but has the consequence that these chain links have butt joints.

Compared to this on a whole series of complicated work processes and the application Procedure instructed by butt jointed links is the procedure according to the present invention characterized in that it, starting from a joint and seamless pipe, the task of bringing in the enlarged end of the narrow Neck piece of each tubular chain link into the further piece of the subsequent one The limb loosens in the much simpler way described, resulting in a much nicer one Appearance of the finished chain, the manufacturing cost can be significantly reduced. The link pipe chains according to the invention can be produced in any length and with very small diameters e.g. for the Manufacture of jewelry, necklaces, bracelets and the like, e.g. B. made of precious metal, as well as with larger diameters for use for technical purposes of various types and from any material.

Claim to patent:

Process for the production of GHederrohrketten from short seamless, at pipe sections of different widths on both sides, in which each pipe section with its narrower part, which is flanged outwards at the end, into the further part of the subsequent pipe section protrudes, characterized in that the

seamless pipe (5) at a desired distance from the pipe end to smaller Diameter (1) than the pipe inside diameter, constricts, on it the front one consisting of a wide (2) and a constricted part (1) Piece of the pipe at the connection point (6) on the main pipe so that an outward flange (3) on the parting

end of the constricted pipe section remains, then the constricted Part (1) of the cut piece of pipe with its flared end (3) in pushes in the main pipe and its end (4) until it comes to rest against it Part inward flared, and these operations are repeated in the same order.

1 sheet of drawings

CLOSE. PRINTED IN THE REICH PRINTING COMPANY