EP0540893A1 - Stranding machine for cables, particularly of larger diameter with alternating twist direction - Google Patents

Stranding machine for cables, particularly of larger diameter with alternating twist direction Download PDF

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Publication number
EP0540893A1
EP0540893A1 EP92117165A EP92117165A EP0540893A1 EP 0540893 A1 EP0540893 A1 EP 0540893A1 EP 92117165 A EP92117165 A EP 92117165A EP 92117165 A EP92117165 A EP 92117165A EP 0540893 A1 EP0540893 A1 EP 0540893A1
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EP
European Patent Office
Prior art keywords
pressure
rail
collets
drive chains
length
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
EP92117165A
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German (de)
French (fr)
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EP0540893B1 (en
Inventor
Michele Dipl.-Ing. Dipalma
Harry Dipl.-Ing. Staschewski
Ernst Dipl.-Ing. Hoffmann
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Kabelmetal Electro GmbH
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Kabelmetal Electro GmbH
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Publication of EP0540893A1 publication Critical patent/EP0540893A1/en
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    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B3/00—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material
    • D07B3/005—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material with alternating twist directions
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/02—Machine details; Auxiliary devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/02—Stranding-up
    • H01B13/0235—Stranding-up by a twisting device situated between a pay-off device and a take-up device
    • H01B13/0264—Stranding-up by a twisting device situated between a pay-off device and a take-up device being rollers, pulleys, drums or belts

Definitions

  • the present invention relates to a device for stranding strand-shaped material, in particular a larger cross-section with a changing direction of lay (SZ), consisting of a rotor rotating with an alternating direction of rotation and / or speed with two drive chains for the material, which run opposite one another and run parallel to the rotor axis along an endless path Comprehensive, along a predetermined distance, determined by a pressure rail and then released again.
  • SZ changing direction of lay
  • Devices of the generic type have been known for a long time (1-1553), they give the possibility of also stranding wires of larger cross sections, such as are necessary for the transmission and distribution of electrical energy, to form a cable core according to the SZ stranding method previously only used in communication cable wires .
  • the individual cores are combined to form a bundle or bundle, held by the collets of the device and stranded during the holding along a certain distance by rotating the rotor with changing direction and / or speed.
  • the stranded cores are released at the end of the defined path (storage path) by means of return springs assigned to each half of the collet.
  • the invention has for its object to find a way that ensures the safety of lifting the collets following the distance under the pressure rail regardless of the respective manufacturing speed and ensures that the synchronism of the collets along the predetermined path of movement is ensured.
  • This object is achieved according to the invention in that the collets are positively guided along the endless path outside of the path in addition to attachment to the drive chains.
  • This positive guidance applies to all collets in the same way, so that impossibilities in the reliability of each return spring assigned to the individual collets are eliminated from the outset.
  • the positive guidance ensures synchronism of the collet pairs, this synchronism is also not adversely affected by higher rotational speeds of the rotor.
  • the positive guidance itself can be of any design to the other structure of the device, but it has proven to be particularly advantageous in the implementation of the invention if the positive guidance consists of a profile rail into which a support roller engages. A migration of this support roller along the positive guidance is excluded, the support roller is only released within the distance determined by the pressure rail, ie during clamping or when the collets become effective.
  • the collets consist of an outer carriage part and an inner slide part that is movable relative to this
  • the support rollers expediently act non-positively on the respective slide part.
  • the support roller leaves the positive guide, the pressure rail and pressure roller become effective, so that the slide part of each collet including the associated support roller is moved in the direction of the goods by the pressure roller pressure-loaded by the pressure rail and there after the goods have been gripped, the transport is longitudinal the specified distance can be carried out.
  • the pressure rail takes effect after the support roller is released from the profile rail and before it is re-engaged.
  • the invention provides that for the management of the Carriage part surrounding carriage part serves a track that is extended on both sides over the length of the pressure rail in the axial direction.
  • the extension is expediently dimensioned so that the carriage part is guided over its length by the rollers until the pressure roller takes effect. This prevents tilting or tipping of the collet from the outset, especially in the transition area of positive guidance that is sensitive to malfunctions and the collet becomes effective. In this context, it has also proven to be beneficial if four rollers arranged symmetrically to the running rail are attached to guide the collet.
  • the collets are fastened to the drive chains on at least two chain links.
  • a particularly advantageous solution is obtained if, for reasons of symmetry, three links of the drive chains are used for mounting. It will be useful to use additional outer plates to fasten the collets, which also serve for lateral stabilization of the collets suspended on the drive chains.
  • each collet half is assigned a pressure roller, which acts on the slide part of the collet under pressure from the pressure rail.
  • a pressure roller acts on the slide part of the collet under pressure from the pressure rail.
  • an adaptation of the respective contact pressure of the collets to the material is often unavoidable.
  • the length of the pressure guide means that the length of the pressure rail has at least three pairs of collets acting on the material under pressure at the same time.
  • FIG. 1 shows a generic stranding device 1 as part of an entire system.
  • This essentially consists of a rotor 4 rotatably mounted within the brackets 2 and 3.
  • This rotor 4 is driven by the motor 5 with alternating direction of rotation, a drive with different speeds It is also possible to achieve the stranding effect.
  • the good gripping collet halves are denoted by 6, they are driven by chains 7 to which they are attached.
  • the drive wheels 8, driven by drive motors provided in the rotor guide the chains 7 on a closed path; by moving in the direction of the arrow, the collet halves 6, as shown at 9, are brought together to form a collet 14 encompassing the material.
  • the movement of the collet halves 6 in the direction of the arrow takes place simultaneously with the rotation of the rotor 4 in the circumferential direction.
  • the material to be stranded for example the wires 10 of an electrical power cable, are drawn off from supplies not shown and fed to the stranding point 12 via so-called roller guide devices 11.
  • roller guide devices 11 By means of the subsequent tape winder 13, strapping is applied to the stranded bundle before it runs into the rotating collet trigger 1.
  • the stranded material 15 is guided in the stretched state and can then be wound onto supply spools, not shown.
  • the collets are additionally guided by a positive guide in addition to the attachment to the two drive forces 7.
  • a positive guide in addition to the attachment to the two drive forces 7.
  • FIG. 2 shows a positive guidance for the collet halves 6 in the form of, for example, a U-shaped profile rail 16 adapted to the drive chain shape.
  • This profile rail 16 ends in the region of the pressure rail 17, by means of which the pressure roller 18 assigned to each collet half 6 in Arrow direction is moved.
  • the pressure roller 18 guided along the pressure rail 17 is passed through at the end of the pressure rail 17 the shape of which is relieved, the profile rail 16 takes up the collet half 6 again.
  • the running rail 19 is arranged, it takes over the guiding of the guide rollers 20 and 21 which are arranged in pairs and which are arranged on the outer carriage part of each collet half 6.
  • this running rail 19 is extended beyond the length of the pressure rail 17. The extension of this running rail 19 is selected so that at the beginning of the pressure when the pressure roller 18 strikes the pressure rail 17, as shown, each collet half 6 is already securely supported on the running rail 19 via both pairs of rollers 20 and 21. This ensures a smooth transition from the positive guidance to the pressure-sensitive guidance and vice versa, from the pressure-sensitive guidance back to the positive guidance.
  • the positive guidance can be realized by a profile rail which is U-shaped in cross section, this embodiment is shown in FIG. 3.
  • the support roller 22 protrudes into the profile rail 16 and is attached to the carrier 23, which is non-positively connected to the slide part 24 connected is.
  • the rail 16 is shown in dashed lines in the embodiment, d. H. this rail is not effective at the moment because the pressure roller 18 is under the influence of the pressure rail 17, which means that the slide part 24 is pressed against the strand-like material 9.
  • a second half of the collet grips the goods 9 from the other side, so that the frictional connection between the goods and the stranding device is established.
  • FIG 3 also illustrates the connection of the outer carriage part 25 with the drive chain 7, with the Vibration-resistant and tilt-free attachment an outer link 26 is used, which is advantageously attached to three chain links by means of protruding bolts 27.
  • the bolt connection 28 serves to connect the outer plate 26 to the outer carriage part 25.
  • rollers 20 and 21 are also provided to ensure tilt-free synchronism, which roll when the pair of collet halves 6 are brought together on the running rail 19.
  • FIG. 4 shows a side view of the collet constructed in accordance with the invention.
  • the pairs of rollers 20 and 21 are fastened to the outer carriage part 25 symmetrically to one another and on both sides of the running rail, not shown.
  • the outer plates 26 arranged on both sides of the chain are used, which are non-positively connected to the chain by means of continuous chain bolts 27 and to the outer carriage part by means of fastening bolts 28.
  • the bracket 23, non-positively connected to the slide part carries at its upper end the support roller 22 which engages in the operating state in the profile rail serving as a positive guide.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ropes Or Cables (AREA)
  • Basic Packing Technique (AREA)

Abstract

In order to strand material (15) in the form of strands, especially having a relatively large cross-section and having an alternating twist direction (SZ), a device (1) is used which consists of a rotor (4) which rotates with a changing rotation direction and/or rotation speed and has two drive chains (7) for the material (15), which are guided parallel to the rotor axis along an endless track and are located opposite one another. Said material is surrounded by clamping tongs (14) along a predetermined movement path which is defined by a pressure rail (17), is guided and is subsequently released again. The clamping tongs (14) are in this case positively guided along the endless track, outside the movement path, in addition to the mounting on the drive chains (7).

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zum Verseilen von strangförmigem Gut insbesondere größeren Querschnittes mit wechselnder Schlagrichtung (SZ), bestehend aus einem mit wechselnder Drehrichtung und/oder Drehzahl umlaufenden Rotor mit zwei parallel zur Rotorachse längs einer endlosen Bahn geführten, einander gegenüberliegenden Antriebsketten für das Gut umfassende, längs einer vorgegebenen, durch eine Druckschiene bestimmten Wegstrecke führende und anschließend wieder freigebende Spannzangen.The present invention relates to a device for stranding strand-shaped material, in particular a larger cross-section with a changing direction of lay (SZ), consisting of a rotor rotating with an alternating direction of rotation and / or speed with two drive chains for the material, which run opposite one another and run parallel to the rotor axis along an endless path Comprehensive, along a predetermined distance, determined by a pressure rail and then released again.

Vorrichtungen der gattungsgemäßen Art sind seit langem bekannt (1-1553), sie geben die Möglichkeit, auch Adern größerer Querschnitte, wie sie zur Übertragung und Verteilung elektrischer Energie notwendig sind, zu einer Kabelseele nach dem bisher lediglich bei Nachrichtenkabeladern eingesetzten SZ-Verseilverfahren zu verseilen. Die einzelnen Adern werden hierbei zu einem Bund oder Bündel zusammengefaßt, von den Spannzangen der Vorrichtung gehalten und während des Haltens längs einer bestimmten Strecke durch Drehung des Rotors mit wechselnder Schlagrichtung und/oder Drehzahl verseilt. Die Freigabe der verseilten Adern am Ende der definierten Wegstrecke (Speicherstrecke) erfolgt mittels jeder Spannzangenhälfte zugeordneter Rückholfedern. Da die Sicherheit des Abhebens der Spannzangen und damit die Sicherheit der Freigabe des verseilten Gutes von der Zuverlässigkeit der Federn abhängig ist, besteht bisweilen Gefahr, daß durch ein Klemmen der Spannzangen der Gleichlauf längs der vorgegebenen Kettenbahnen gestört ist. Diese Gefahr besteht insbesondere dann, wenn man zu höheren Fertigungsgeschwindigkeiten übergeht und die hierbei auftretenden Fliehkräfte wirksam werden.Devices of the generic type have been known for a long time (1-1553), they give the possibility of also stranding wires of larger cross sections, such as are necessary for the transmission and distribution of electrical energy, to form a cable core according to the SZ stranding method previously only used in communication cable wires . The individual cores are combined to form a bundle or bundle, held by the collets of the device and stranded during the holding along a certain distance by rotating the rotor with changing direction and / or speed. The stranded cores are released at the end of the defined path (storage path) by means of return springs assigned to each half of the collet. Since the safety of lifting the collets and thus the safety of releasing the stranded goods depends on the reliability of the springs sometimes there is a risk that the synchronism along the specified chain tracks is disturbed by a clamping of the collets. This danger arises, in particular, if one moves to higher production speeds and the centrifugal forces that occur become effective.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine Möglichkeit zu finden, die die Sicherheit des Abhebens der Spannzangen in Anschluß an die Wegstrecke unter der Druckschiene unabhängig von der jeweiligen Fertigungsgeschwindigkeit gewährleistet und dafür sorgt, daß der Gleichlauf der Spannzangen längs der vorgegebenen Bewegungsbahn sichergestellt ist.Based on this prior art, the invention has for its object to find a way that ensures the safety of lifting the collets following the distance under the pressure rail regardless of the respective manufacturing speed and ensures that the synchronism of the collets along the predetermined path of movement is ensured.

Gelöst wird diese Aufgabe gemäß der Erfindung dadurch, daß die Spannzangen außerhalb der Wegstrecke zusätzlich zur Befestigung an den Antriebsketten längs der endlosen Bahn zwangsgeführt sind. Diese Zwangsführung gilt für alle Spannzangen in gleicher Weise, so daß Unwegbarkeiten in der Zuverlässigkeit jeder der einzelnen Spannzangen zugeordneten Rückholfedern von vornherein ausgeschaltet sind. Die Zwangsführung sichert einen Gleichlauf der Spannzangenpaare, dieser Gleichlauf wird auch nicht durch höhere Umlaufgeschwindigkeiten des Rotors nachteilig beeinträchtigt.This object is achieved according to the invention in that the collets are positively guided along the endless path outside of the path in addition to attachment to the drive chains. This positive guidance applies to all collets in the same way, so that impossibilities in the reliability of each return spring assigned to the individual collets are eliminated from the outset. The positive guidance ensures synchronism of the collet pairs, this synchronism is also not adversely affected by higher rotational speeds of the rotor.

Die Zwangsführung selbst kann dem sonstigen Aufbau der Vorrichtung beliebig ausgeführt sein, als besonders vorteilhaft hat es sich jedoch in Durchführung der Erfindung erwiesen, wenn die Zwangsführung aus einer Profilschiene besteht, in die eine Stützrolle eingreift. Ein Auswandern dieser Stützrolle längs der Zwangsführung ist ausgeschlossen, freigegeben wird die Stützrolle erst innerhalb der durch die Druckschiene bestimmten Wegstrecke, d. h. während des Klemmens oder des Wirksamwerdens der Spannzangen.The positive guidance itself can be of any design to the other structure of the device, but it has proven to be particularly advantageous in the implementation of the invention if the positive guidance consists of a profile rail into which a support roller engages. A migration of this support roller along the positive guidance is excluded, the support roller is only released within the distance determined by the pressure rail, ie during clamping or when the collets become effective.

Bestehen, wie es die Regel ist, die Spannzangen aus einem äußeren Wagenteil und einem gegenüber diesem bewegbaren inneren Schlittenteil, dann wirken die Stützrollen zweckmäßig kraftschlüssig auf den jeweiligen Schlittenteil ein. Für die Vorrichtung nach der Erfindung bedeutet dies, daß beim Einlaufen der Stützrolle in die Zwangsführung am Ende der Druckschiene und damit Entlastung der Druckrolle der Schlittenteil angehoben und schließlich die gesamte Spannzange auf der vorgegebenen Kettenbahn zum Eingangspunkt zurückgeführt wird.If, as is the rule, the collets consist of an outer carriage part and an inner slide part that is movable relative to this, the support rollers expediently act non-positively on the respective slide part. For the device according to the invention, this means that when the support roller enters the positive guide at the end of the pressure rail and thus the pressure roller is relieved, the slide part is raised and finally the entire collet is returned to the entry point on the specified chain track.

An dieser Stelle (Eingangspunkt) verläßt die Stützrolle die Zwangsführung, Druckschiene und Druckrolle werden wirksam, so daß der Schlittenteil jeder Spannzange einschließlich der zugehörigen Stützrolle durch die von der Druckschiene druckbelastete Druckrolle in Richtung auf das Gut bewegt und dort nach Umgreifen des Gutes der Transport längs der vorgegebenen Wegstrecke durchgeführt werden kann. Bei diesem Verfahrensablauf ist wesentlich, daß die Druckschiene nach der Freigabe der Stützrolle aus der Profilschiene und vor dem erneuten Eingriff in diese wirksam wird.At this point (entry point), the support roller leaves the positive guide, the pressure rail and pressure roller become effective, so that the slide part of each collet including the associated support roller is moved in the direction of the goods by the pressure roller pressure-loaded by the pressure rail and there after the goods have been gripped, the transport is longitudinal the specified distance can be carried out. In this process it is essential that the pressure rail takes effect after the support roller is released from the profile rail and before it is re-engaged.

Für das zu verseilende Gut kommt es darauf an, daß die Spannzangen gleichmäßig greifen und während des Führens auch nicht verkanten, um Beschädigungen des Gutes zu vermeiden. Praktiziert wurde deshalb bisher eine Führung jeder einzelnen Spannzangen in der Weise, daß der den Schlittenteil umgebende Wagenteil mit Hilfe von Rollenanordnungen auf einer Laufschiene geführt ist. Ein schnellerer Umlauf des Rotors und damit verbunden höhere Fliehkräfte haben jedoch gezeigt, daß die bisherige Führung des Wagenteiles nicht ausreichend ist, da es immer wieder zu einem Verkanten oder Kippen der Spannzange kommen kann. Um hier Abhilfe zu schaffen, sieht die Erfindung vor, daß zur Führung des den Schlittenteil umgebenden Wagenteiles eine Laufschiene dient, die beidseitig über die Länge der Druckschiene in Achsrichtung hinaus verlängert ist. Dabei ist zweckmäßig die Verlängerung so bemessen, daß der Wagenteil bis zum Wirksamwerden der Druckrolle über seine Länge von den Laufrollen geführt ist. Damit ist ein Verkanten oder Kippen der Spannzange gerade im gegen Störungen empfindlichen Übergangsbereich von Zwangsführung und Wirksamwerden der Spannzangen von vornherein ausgeschaltet. Als förderlich hat es sich in diesem Zusammenhang auch erwiesen, wenn zur Führung der Spannzange vier symmetrisch zur Laufschiene angeordnete Laufrollen angebracht werden.For the material to be stranded, it is important that the collets grip evenly and do not tilt during guiding to avoid damage to the material. It has therefore been practiced so far to guide each individual collet in such a way that the carriage part surrounding the slide part is guided on a running rail with the aid of roller arrangements. However, a faster rotation of the rotor and the associated higher centrifugal forces have shown that the previous guidance of the carriage part is not sufficient, since the collet can always tilt or tilt. In order to remedy this, the invention provides that for the management of the Carriage part surrounding carriage part serves a track that is extended on both sides over the length of the pressure rail in the axial direction. The extension is expediently dimensioned so that the carriage part is guided over its length by the rollers until the pressure roller takes effect. This prevents tilting or tipping of the collet from the outset, especially in the transition area of positive guidance that is sensitive to malfunctions and the collet becomes effective. In this context, it has also proven to be beneficial if four rollers arranged symmetrically to the running rail are attached to guide the collet.

Für den Gleichlauf der Spannzangen auf den vorgeschriebenen Bahnen ist es auch förderlich, wenn nach einem weiteren Erfindungsgedanken die Spannzangen an den Antriebsketten an mindestens zwei Kettengliedern befestigt sind. Eine besonders vorteilhafte Lösung ergibt sich dann, wenn aus Symmetriegründen drei Glieder der Antriebsketten zur Halterung herangezogen werden. Dabei wird man zweckmäßig zur Befestigung der Spannzangen zusätzliche Außenlaschen verwenden, die gleichzeitig für eine seitliche Stabilisierung der an den Antriebsketten aufgehängten Spannzangen dienen.For the synchronism of the collets on the prescribed tracks, it is also beneficial if, according to a further inventive idea, the collets are fastened to the drive chains on at least two chain links. A particularly advantageous solution is obtained if, for reasons of symmetry, three links of the drive chains are used for mounting. It will be useful to use additional outer plates to fasten the collets, which also serve for lateral stabilization of the collets suspended on the drive chains.

Die Anpreßkraft der Spannzangen ergibt sich dadurch, daß jeder Spannzangenhälfte eine Druckrolle zugeordnet ist, die von der Druckschiene aus druckbelastet auf das Schlittenteil der Spannzange einwirkt. Abhängig von dem Durchmesser des zu verseilenden Gutes, von der Empfindlichkeit seiner Oberfläche gegen Druckbelastung und dergl. ist eine Anpassung des jeweiligen Anpreßdruckes der Spannzangen an das Gut oft unumgänglich. In diesem Zusammenhang hat es sich in Durchführung der Erfindung als zweckmäßig erwiesen, wenn die Anpreßkraft der Druckrollen über eine zentrale Verstellung der Lageänderung der Druckschiene vorgenommen wird.The pressing force of the collets results from the fact that each collet half is assigned a pressure roller, which acts on the slide part of the collet under pressure from the pressure rail. Depending on the diameter of the material to be stranded, on the sensitivity of its surface to pressure loads and the like, an adaptation of the respective contact pressure of the collets to the material is often unavoidable. In this context, it has proven to be useful in carrying out the invention if the pressure force of the pressure rollers via a central Adjustment of the change in position of the pressure rail is made.

Bei Vorrichtungen der gattungsgemäßen Art werden jeweils zwei Spannzangenhälften an der Stelle des Einwirkens auf das Gut von zwei gegenüberliegenden Seiten über dem Gut zusammengeführt. Demnach kommt es also hierbei nicht nur auf den Gleichlauf eines Kettenantriebes an, vielmehr ist der Gleichlauf beider Kettenantriebe zu berücksichtigen, wenn das Gut ohne Schaden von den beidseitig herangeführten Spannzangen umschlossen werden soll. Um das zu erreichen, sind die Antriebsmotoren über Kegelradgetriebe miteinander verbunden. Anstelle eines Kegelradgetriebes können zu dem gleichen Zweck aber auch Stirnradgetriebe oder Kettenantriebe verwendet werden.In the case of devices of the generic type, two halves of the collet are brought together at the point of action on the goods from two opposite sides above the goods. Accordingly, it is not only a question of the synchronism of a chain drive, rather the synchronism of both chain drives must be taken into account if the material is to be enclosed by the collets brought in on both sides without damage. To achieve this, the drive motors are connected to each other via bevel gear. Instead of a bevel gear, spur gears or chain drives can also be used for the same purpose.

Für die problemlose Verseilung der Adern eines elektrischen Starkstromkabels, beispielsweise mit gleicher Schlaglänge und gleichmäßigem Verseilverlauf, kommt es auch darauf an, daß das Gut während des Durchlaufens der vorgegebenen Strecke unter der Druckschiene im gestreckten Zustand geführt wird. Zu diesem Zweck hat es sich als vorteilhaft erwiesen, wenn durch die Länge der Zwangsführung die Länge der Druckschiene mindestens drei Spannzangenpaare gleichzeitig druckbelastet auf das Gut einwirken.For the problem-free stranding of the wires of an electrical power cable, for example with the same lay length and even stranding course, it is also important that the material is guided in the stretched state under the pressure rail while passing through the predetermined distance. For this purpose, it has proven to be advantageous if the length of the pressure guide means that the length of the pressure rail has at least three pairs of collets acting on the material under pressure at the same time.

Die Erfindung sei anhand der in den Figuren 1 bis 4 dargestellten Ausführungsbeispiele näher erläutert.The invention will be explained in more detail with reference to the exemplary embodiments shown in FIGS. 1 to 4.

Die Figur 1 zeigt als Bestandteil einer gesamten Anlage eine gattungsgemäße Verseilvorrichtung 1. Diese besteht im wesentlichen aus einem innerhalb der Böcke 2 und 3 drehbar gelagerten Rotor 4. Dieser Rotor 4 wird durch den Motor 5 mit wechselnder Drehrichtung angetrieben, ein Antrieb mit unterschiedlicher Drehzahl zur Erreichung des Verseileffektes ist ebenfalls möglich. Die das Gut greifenden Spannzangenhälften sind mit 6 bezeichnet, sie werden angetrieben von Ketten 7, an denen sie befestigt sind. Die Antriebsräder 8, angetrieben von im Rotor vorgesehenen Antriebsmotoren, führen die Ketten 7 auf einer geschlossenen Bahn, durch Bewegung in Pfeilrichtung werden die Spannzangenhälften 6, wie bei 9 dargestellt, zu einer das Gut umfassenden Spannzange 14 zusammengeführt. Die Bewegung der Spannzangenhälften 6 in Pfeilrichtung erfolgt gleichzeitig mit dem Umlauf des Rotors 4 in Umfangsrichtung.FIG. 1 shows a generic stranding device 1 as part of an entire system. This essentially consists of a rotor 4 rotatably mounted within the brackets 2 and 3. This rotor 4 is driven by the motor 5 with alternating direction of rotation, a drive with different speeds It is also possible to achieve the stranding effect. The good gripping collet halves are denoted by 6, they are driven by chains 7 to which they are attached. The drive wheels 8, driven by drive motors provided in the rotor, guide the chains 7 on a closed path; by moving in the direction of the arrow, the collet halves 6, as shown at 9, are brought together to form a collet 14 encompassing the material. The movement of the collet halves 6 in the direction of the arrow takes place simultaneously with the rotation of the rotor 4 in the circumferential direction.

Das zu verseilende Gut, beispielsweise die Adern 10 eines elektrischen Starkstromkabels, werden von nicht dargestellten Vorräten abgezogen und über sogenannte Rollenführungsgeräte 11 dem Verseilpunkt 12 zugeführt. Mittels des anschließenden Bandwicklers 13 wird eine Bebänderung auf das verseilte Bündel aufgebracht, bevor es in den rotierenden Spannzangenabzug 1 einläuft. Hier wird das verseilte Gut 15 im gestreckten Zustand geführt und kann anschließend auf nicht dargestellte Vorratsspulen aufgewickelt werden.The material to be stranded, for example the wires 10 of an electrical power cable, are drawn off from supplies not shown and fed to the stranding point 12 via so-called roller guide devices 11. By means of the subsequent tape winder 13, strapping is applied to the stranded bundle before it runs into the rotating collet trigger 1. Here the stranded material 15 is guided in the stretched state and can then be wound onto supply spools, not shown.

Um einen von der Drehzahl des Rotors 4 unabhängigen Gleichlauf der Spannzangenhälften 6 sicherzustellen und dafür zu sorgen, daß nach dem Zusammenführen diese Spannzangen auch wieder störungsfrei auseinandergeführt werden können, sind die Spannzangen neben der Befestigung an den beiden Antriebskräften 7 zusätzlich durch eine Zwangsführung geführt. Verdeutlicht wird diese Maßnahme in der Figur 2. Sie zeigt eine Zwangsführung für die Spannzangenhälften 6 in Form einer der Antriebskettenform angepaßten beispielsweise U-förmigen Profilschiene 16. Diese Profilschiene 16 endet im Bereich der Druckschiene 17, mittels der die jeder Spannzangenhälfte 6 zugeordneten Druckrolle 18 in Pfeilrichtung bewegt wird. Entsprechend wird die an der Druckschiene 17 entlang geführte Druckrolle 18 am Ende der Druckschiene 17 durch deren Formgebung wieder entlastet, die Profilschiene 16 nimmt die Spannzangenhälfte 6 wieder auf. Unterhalb der Druckschiene 17 ist die Laufschiene 19 angeordnet, sie übernimmt die Führung der paarweise gegenüber angeordneten Führungsrollen 20 und 21, die am äißeren Wagenteil jeder Spannzangenhälfte 6 angeordnet sind. Um Ein- und Auslauf jeder Spannzangenhälfte gleichförmig und kippfrei zu gestalten, ist diese Laufschiene 19 über die Länge der Druckschiene 17 hinaus verlängert. Die Verlängerung dieser Laufschiene 19 ist so gewählt, daß zu Beginn der Druckausübung beim Auftreffen der Druckrolle 18 auf die Druckschiene 17, wie dargestellt, jede Spannzangenhälfte 6 bereits über beide Rollenpaare 20 und 21 sicher auf der Laufschiene 19 abgestützt ist. Damit ist ein gleichmäßiger Übergang von der Zwangsführung in die druckbehaftete Führung und umgekehrt, von der druckbehafteten Führung zurück in die Zwangsführung gegeben.In order to ensure a synchronism of the collet halves 6 which is independent of the speed of the rotor 4 and to ensure that these collets can be separated again after the merging without interference, the collets are additionally guided by a positive guide in addition to the attachment to the two drive forces 7. This measure is illustrated in FIG. 2. It shows a positive guidance for the collet halves 6 in the form of, for example, a U-shaped profile rail 16 adapted to the drive chain shape. This profile rail 16 ends in the region of the pressure rail 17, by means of which the pressure roller 18 assigned to each collet half 6 in Arrow direction is moved. Accordingly, the pressure roller 18 guided along the pressure rail 17 is passed through at the end of the pressure rail 17 the shape of which is relieved, the profile rail 16 takes up the collet half 6 again. Below the pressure rail 17, the running rail 19 is arranged, it takes over the guiding of the guide rollers 20 and 21 which are arranged in pairs and which are arranged on the outer carriage part of each collet half 6. In order to make the inlet and outlet of each collet half uniform and tilt-free, this running rail 19 is extended beyond the length of the pressure rail 17. The extension of this running rail 19 is selected so that at the beginning of the pressure when the pressure roller 18 strikes the pressure rail 17, as shown, each collet half 6 is already securely supported on the running rail 19 via both pairs of rollers 20 and 21. This ensures a smooth transition from the positive guidance to the pressure-sensitive guidance and vice versa, from the pressure-sensitive guidance back to the positive guidance.

Die Zwangsführung läßt sich, wie bereits erläutert, durch eine im Querschnitt U-förmige Profilschiene verwirklichen, diese Ausführungsform zeigt die Figur 3. In die Profilschiene 16 ragt die Stützrolle 22 hinein, sie ist an dem Träger 23 angelängt, der kraftschlüssig mit dem Schlittenteil 24 verbunden ist. Die Profilschiene 16 ist im Ausführungsbeispiel gestrichelt dargestellt, d. h. diese Profilschiene ist im Augenblick nicht wirksam, weil die Druckrolle 18 unter dem Einfluß der Druckschiene 17 steht, was bedeutet, daß der Schlittenteil 24 gegen das strangförmige Gut 9 gepreßt wird. Spiegelbildlich hierzu greift von der anderen Seite dann eine zweite Spannzangenhälfte auf das Gut 9 über, so daß der Kraftschluß zwischen dem Gut und der Verseilvorrichtung hergestellt ist.As already explained, the positive guidance can be realized by a profile rail which is U-shaped in cross section, this embodiment is shown in FIG. 3. The support roller 22 protrudes into the profile rail 16 and is attached to the carrier 23, which is non-positively connected to the slide part 24 connected is. The rail 16 is shown in dashed lines in the embodiment, d. H. this rail is not effective at the moment because the pressure roller 18 is under the influence of the pressure rail 17, which means that the slide part 24 is pressed against the strand-like material 9. As a mirror image of this, a second half of the collet grips the goods 9 from the other side, so that the frictional connection between the goods and the stranding device is established.

Die Figur 3 verdeutlicht auch die Verbindung des äußeren Wagenteiles 25 mit der Antriebskette 7, wobei zur schwingungsfesten und kippfreien Befestigung eine Außenlasche 26 verwendet wird, die vorteilhaft an drei Kettengliedern mittels überstehender Bolzen 27 befestigt ist. Zur Verbindung der Außenlasche 26 mit dem äußeren Wagenteil 25 dient die Bolzenverbindung 28.Figure 3 also illustrates the connection of the outer carriage part 25 with the drive chain 7, with the Vibration-resistant and tilt-free attachment an outer link 26 is used, which is advantageously attached to three chain links by means of protruding bolts 27. The bolt connection 28 serves to connect the outer plate 26 to the outer carriage part 25.

Am äußeren Wagen 25 sind ferner zur Gewährleistung eines kippfreien Gleichlaufes vier Laufrollen 20 bzw. 21 vorgesehen, die beim Zusammenführen der paarweisen Spannzangenhälften 6 auf der Laufschiene 19 abrollen.On the outer carriage 25, four rollers 20 and 21 are also provided to ensure tilt-free synchronism, which roll when the pair of collet halves 6 are brought together on the running rail 19.

Eine Seitenansicht der gemäß der Erfindung aufgebauten Spannzange zeigt die Figur 4. Symmetrisch zueinander und beidseitig der nicht dargestellten Laufschiene sind die Laufrollenpaare 20 und 21 am äußeren Wagenteil 25 befestigt. Zur kippfreien Verbindung des äußeren Wagenteiles mit der Antriebskette dienen die beidseitig der Kette angeordneten Außenlaschen 26, die mittels durchgehender Kettenbolzen 27 kraftschlüssig mit der Kette und mittels Befestigungsbolzen 28 kraftschlüssig mit dem äußeren Wagenteil verbunden sind. Die Halterung 23, kraftschlüssig verbunden mit dem Schlittenteil, trägt an seinem oberen Ende die Stützrolle 22, die im Betriebszustand in die als Zwangsführung dienende Profilschiene eingreift.FIG. 4 shows a side view of the collet constructed in accordance with the invention. The pairs of rollers 20 and 21 are fastened to the outer carriage part 25 symmetrically to one another and on both sides of the running rail, not shown. For the tilt-free connection of the outer carriage part to the drive chain, the outer plates 26 arranged on both sides of the chain are used, which are non-positively connected to the chain by means of continuous chain bolts 27 and to the outer carriage part by means of fastening bolts 28. The bracket 23, non-positively connected to the slide part, carries at its upper end the support roller 22 which engages in the operating state in the profile rail serving as a positive guide.

Claims (13)

Vorrichtung zum Verseilen von strangförmigem Gut insbesondere größeren Querschnittes mit wechselnder Schlagrichtung (SZ), bestehend aus einem mit wechselnder Drehrichtung und/oder Drehzahl umlaufenden Rotor mit zwei parallel zur Rotorachse längs einer endlosen Bahn geführten, einander gegenüberliegenden Antriebsketten für das Gut umfassende, längs einer vorgegebenen, durch eine Druckschiene bestimmten Wegstrecke führende und anschließend wieder freigebende Spannzangen, dadurch gekennzeichnet, daß die Spannzangen außerhalb der Wegstrecke zusätzlich zur Befestigung an den Antriebsketten längs der endlosen Bahn zwangsgeführt sind.Device for stranding strand-like material, in particular a larger cross-section with a changing direction of lay (SZ), consisting of a rotor rotating with an alternating direction of rotation and / or speed with two drive chains for the material comprising an opposing chain running parallel to the rotor axis along an endless path, along a predetermined length Collets leading through a pressure rail and then releasing them again, characterized in that the collets outside the path are additionally guided along the endless path for attachment to the drive chains. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Zwangsführung aus einer Profilschiene besteht, in die eine Stützrolle eingreift.Apparatus according to claim 1, characterized in that the positive guide consists of a profile rail into which a support roller engages. Vorrichtung nach Anspruch 2 mit Spannzangen, die aus einem äußeren Wagen- und einem gegenüber diesen bewegbaren inneren Schlittenteil bestehen, dadurch gekennzeichnet, daß die Stützrollen kraftschlüssig auf den jeweiligen Schlittenteil einwirken.Apparatus according to claim 2 with collets which consist of an outer carriage part and an inner slide part which is movable relative to the latter, characterized in that the support rollers act non-positively on the respective slide part. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß der Schlittenteil jeder Spannzange einschließlich der zugehörigen Stützrolle außerhalb der Zwangsführung durch eine von der Druckschiene druckbelastete Druckrolle in Richtung auf das Gut bewegbar ist.Apparatus according to claim 3, characterized in that the slide part of each collet including the associated support roller outside the positive guidance can be moved in the direction of the goods by a pressure roller which is loaded by the pressure rail. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Druckschiene nach der Freigabe der Stützrolle aus der Profilschiene und vor dem erneuten Eingriff in diese wirksam ist.Apparatus according to claim 4, characterized in that the pressure rail is effective after the support roller is released from the profile rail and before it is re-engaged. Vorrichtung nach Anspruch 3 oder einem der folgenden, dadurch gekennzeichnet, daß zur Führung des den Schlittenteil umgebenden Wagenteiles eine Laufschiene dient, die beidseitig über die Länge der Druckschiene in Achsrichtung hinaus verlängert ist.Apparatus according to claim 3 or one of the following, characterized in that a guide rail is used to guide the carriage part surrounding the carriage part, which is extended on both sides over the length of the pressure rail in the axial direction. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Verlängerung so bemessen ist, daß der Wagenteil bis zum Wirksamwerden der Druckrolle über seine Länge von den Laufrollen geführt ist.Apparatus according to claim 6, characterized in that the extension is dimensioned so that the carriage part is guided over its length by the rollers until the pressure roller takes effect. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß zur Führung vier symmetrisch zur Laufschiene angeordnete Laufrollen dienen.Apparatus according to claim 7, characterized in that four rollers arranged symmetrically to the running rail serve for guiding. Vorrichtung nach Anspruch 1 oder einem der folgenden, dadurch gekennzeichnet, daß die Spannzangen an den Antriebsketten an mindestens zwei Kettengliedern befestigt sind.Apparatus according to claim 1 or one of the following, characterized in that the collets are fastened to the drive chains on at least two chain links. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß zur Befestigung der Spannzangen zusätzliche Außenlaschen vorgesehen sind.Apparatus according to claim 9, characterized in that additional outer plates are provided for fastening the collets. Vorrichtung nach Anspruch 1 oder einem der folgenden, gekennzeichnet durch eine zentrale Verstellung der Anpreßkraft der Druckrollen mittels Lageänderung der Druckschiene.Device according to claim 1 or one of the following, characterized by a central adjustment of the contact pressure of the pressure rollers by changing the position of the pressure rail. Vorrichtung nach Anspruch 1 oder einem der folgenden, dadurch gekennzeichnet, daß zum Gleichlauf der Antriebsketten die Antriebsmotoren über Kegelrad- oder Stirnradgetriebe verbunden sind.Apparatus according to claim 1 or one of the following, characterized in that the drive motors are connected via bevel gear or spur gear for synchronizing the drive chains. Vorrichtung nach Anspruch 1 oder einem der folgenden, dadurch gekennzeichnet, daß durch die Länge der Zwangsführung und die Länge der Druckschiene mindestens drei Spannzangenpaare gleichzeitig druckbelastet auf das Gut einwirken.Apparatus according to claim 1 or one of the following, characterized in that at least three pairs of collets act on the material under pressure at the same time due to the length of the positive guide and the length of the pressure rail.
EP92117165A 1991-11-04 1992-10-08 Stranding machine for cables, particularly of larger diameter with alternating twist direction Expired - Lifetime EP0540893B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4136266A DE4136266A1 (en) 1991-11-04 1991-11-04 DEVICE FOR STRINGING STRAND-SHAPED GOODS, IN PARTICULAR LARGER CROSS-SECTIONS WITH ALTERNATING PUNCHING DIRECTION
DE4136266 1991-11-04

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EP0540893A1 true EP0540893A1 (en) 1993-05-12
EP0540893B1 EP0540893B1 (en) 1996-01-03

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JP (1) JPH05321176A (en)
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AU657807B2 (en) 1995-03-23
JPH05321176A (en) 1993-12-07
ZA928514B (en) 1994-02-07
DE59204909D1 (en) 1996-02-15
AU2811092A (en) 1993-05-06
US5414988A (en) 1995-05-16
DE4136266A1 (en) 1993-05-06
RU2084573C1 (en) 1997-07-20
DK0540893T3 (en) 1996-05-06
CA2082020A1 (en) 1993-05-05
EP0540893B1 (en) 1996-01-03

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