EP1847337B1 - Drive arangement for a rotor of a straightening machine for straightening of wire - Google Patents

Drive arangement for a rotor of a straightening machine for straightening of wire Download PDF

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Publication number
EP1847337B1
EP1847337B1 EP06008192A EP06008192A EP1847337B1 EP 1847337 B1 EP1847337 B1 EP 1847337B1 EP 06008192 A EP06008192 A EP 06008192A EP 06008192 A EP06008192 A EP 06008192A EP 1847337 B1 EP1847337 B1 EP 1847337B1
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EP
European Patent Office
Prior art keywords
straightening
rotor
shaft
driving
drive
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EP06008192A
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German (de)
French (fr)
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EP1847337A1 (en
Inventor
Helmut Lengerer
Eugen Henselmann
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Wafios AG
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Wafios AG
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Priority to DE502006001133T priority Critical patent/DE502006001133D1/en
Priority to AT06008192T priority patent/ATE401150T1/en
Priority to EP06008192A priority patent/EP1847337B1/en
Publication of EP1847337A1 publication Critical patent/EP1847337A1/en
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Publication of EP1847337B1 publication Critical patent/EP1847337B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire
    • B21F1/02—Straightening
    • B21F1/023—Straightening in a device rotating about the wire axis

Definitions

  • the invention relates to a drive arrangement for a mounted in a housing straightening rotor straightening machine for straightening wire, wherein the straightening rotor is rotatably driven by a drive means at high speed about its longitudinal axis and inlet and outlet side mounted in the housing and the outlet side has a stub shaft, which projects beyond the local bearing and is driven by a hollow shaft electric motor with an internal drive rotor seated on it.
  • the supplied wire withdrawn from the coil is continuously conveyed through a straightening rotor which rotates about its longitudinal axis at a very high speed and which is provided with radially offset straightening jaws. During the pass, the wire is bent in all directions, to then obtain a straight wire rod without residual stresses.
  • the straightening rotor is usually driven by means of a drive located in the machine housing via a belt drive, with very high speeds (up in the range of about 9 000 - 10 000 U / min.) Should be achieved.
  • Such drives are z. B. from the EP-A1-0 620 058 , of the EP-B1-0313769 , of the UK B1-711991 or the DE-A1-10 2005 010 632 known.
  • the invention is intended to remedy the situation while still allowing a space-saving arrangement of the drive for the straightening rotor a problem-free, cost-effective and also quickly feasible replacement of the outlet side bearing of the straightening rotor.
  • the invention provides a solution is first created in which the drive rotor of the hollow shaft electric motor occurring very large torques (in the order of about 35 Nm) at very high speeds (up to over 10,000 rev / min.) As a result of shrinking on a Drive sleeve can safely transmit to this, without causing the risk of detachment of rotor windings occurs at these high speeds.
  • the inventive measures is in a simple, but very effective way previously in the known, shrunk onto the stub shaft drive rotor of the electric motor existing problem of inaccessibility of the outlet side of the camp Straightening rotor solved and thus easy replacement of this camp, when required, while maintaining only a very small footprint for the drive device allows.
  • An advantageous embodiment of the invention consists in the fact that the drive sleeve on the stub shaft of the straightening rotor by means of a radially effective clamping device rotatably connected thereto, which is particularly preferably used as a clamping device a double-disc clamping set, ie a clamping set with two mutually braced ring clamping elements.
  • a clamping device a double-disc clamping set, ie a clamping set with two mutually braced ring clamping elements.
  • the clamping set can be provided both at the front (ie at the drive sleeve on the motor input side) or at the rear (at the drive sleeve on the motor output side) or also at the front as well as at the rear (ie in the form of two such clamping sets).
  • the use of a double-cone clamping set over which very considerable radial clamping forces can be applied without difficulty is particularly advantageous.
  • the drive sleeve can be made of any suitable material, but is preferably made of steel. Also in the ring tension elements of such a double-disc clamping set are preferably steel discs.
  • a further preferred embodiment of the invention is also the fact that the drive sleeve is axially clamped against a suitably arranged on the stub shaft of the straightening rotor shaft shoulder, such as by means of a stub axially aufschraubbaren stub nut, more preferably between the drive sleeve and stub shaft a feather key to ensure the torsional strength is interposed.
  • the drive sleeve on the stub shaft of the straightening rotor can be releasably braced in any other suitable manner, such as by using suitable clamping wedges o. ⁇ .
  • any suitable for the required large torques and very high speeds electric motor can be used.
  • a synchronous motor or an asynchronous motor is provided as a hollow shaft electric motor.
  • Fig. 1 is shown in an oblique view from the front above a straightening machine 10 with unfolded cover 12. The latter is attached to a machine frame 14 hinged.
  • the straightening machine 10 serves to straighten a wire 16 fed in the direction Z and has a plurality of draw-in modules 18, two of which (seen in the wire conveying direction Z) are mounted in front of and one behind a straightening unit 20 in the illustrated embodiment.
  • the straightening unit 20 has a housing 22 in which a straightening rotor 24 rotating at high speed is mounted, which in turn is driven via a hollow-shaft electric motor 26 in the form of a synchronous motor.
  • the hollow shaft electric motor 26 is mounted concentrically to the longitudinal axis of the straightening rotor 24, (viewed in the wire conveying direction Z) directly behind a rear side wall 28 of the housing 22, in the output side (not shown in detail in the figures) bearing for the Straightening rotor 24 is arranged, which is also mounted on the input side in a local side wall 30 of the housing 22 by means of a (not shown in detail) bearing.
  • straightening rotor 24 itself can be provided with several, at a distance one behind the other in its longitudinal direction, radially offset and radially adjustable straightening jaws provided against the longitudinal axis is not intended here Be discussed in more detail, because it may be any suitable and known Richtrotor design, such as such. B. from the EP-B1-0313769 or even the EP-A1-0 620 058 can be taken by way of example.
  • FIG. 3 which shows the outlet-side end of the straightening rotor 24 and, in section, the hollow-shaft electric motor 26 mounted there in a further enlarged, further detailed representation, the attachment of the latter to the straightening unit 20 is shown in detail:
  • the hollow-shaft electric motor 26 comprises a motor housing 32 screwed to the rear sidewall 28 of the straightening rotor housing 22 (seen in the wire conveying direction Z), only one screw fastening point 34 being indicated.
  • a heat sink 36 and a drive stator 38 are mounted rotatably.
  • the cooling body 36 is constantly supplied with a suitable cooling liquid (water), wherein via a (in Fig. 3 not shown) drain a cooling circuit is ensured by the hollow shaft electric motor 26 is constantly cooled and thus overheating of the same can be prevented.
  • a suitable cooling liquid water
  • the drive rotor 42 of the hollow-shaft electric motor 26 is shrunk onto a drive sleeve 44, resulting in an extremely strong and firm connection between the two parts.
  • the hollow shaft electric motor 26 is attached with its shrunk onto the drive sleeve 44 drive rotor 42 for mounting on a stub shaft 46 of the straightening rotor 24.
  • this stub shaft 46 of the straightening rotor 24 is located on the side wall 28 of the Richtrotorgephases 22, which is opposite the straightening rotor 24, and protrudes, so that from there the hollow shaft electric motor 26 can be pushed easily with the drive sleeve 24 for mounting.
  • the double-cone clamping set 50 used consists of two steel disks 52 axially offset at a small distance from one another (cf. Fig. 3 ) on their radially inner end surfaces on their facing sides in the direction of the other Steel disc away each have a decreasing in diameter conical surface 54.
  • these roof-shaped against each other employed conical surfaces 54 they run axially against a complementary to the conical surfaces 54 conical outer surface of a between the steel discs 52 and the drive sleeve 44 intermediate clamping ring 56.
  • the two steel discs 52 by corresponding clamping means 58 (in Fig.
  • the hollow shaft electric motor 26 is closed by means of the rotor cover 48 with a flange and a clamping ring 62 to the outside.
  • an outlet bushing 64 is still provided for wire guide.
  • the wire 16 is withdrawn from the feed module 18 from a coil (not shown) and fed to the straightening unit 20.
  • the wire 16 is conveyed through the rotating straightening rotor 24, thereby bent in all directions and thus straightened.
  • the wire 16 passes through the coaxially mounted hollow-shaft electric motor 26, wherein after this once again provided feed module 18 has the function to pull the wire 16 from the straightening rotor 24.
  • the wire 16 may be further processed or further transported in a suitable manner.

Abstract

Drive arrangement comprises a hollow shaft electric motor (26) with a drive motor (42) shrunk onto a drive sleeve (44) which is detachedly fixed onto the shaft end (46) of the rotor (24) of a straightening machine.

Description

Die Erfindung bezieht sich auf eine Antriebsanordnung für einen in einem Gehäuse gelagerten Richtrotor einer Richtmaschine zum Geraderichten von Draht, wobei der Richtrotor von einer Antriebseinrichtung mit hoher Drehzahl um seine Längsachse rotierend antreibbar sowie einlauf- und auslaufseitig im Gehäuse gelagert ist und auslaufseitig einen Wellenstumpf aufweist, der über das dortige Lager vorsteht und von einem auf ihm sitzenden Hohlwellen-Elektromotor mit innenliegendem Antriebsrotor angetrieben wird.The invention relates to a drive arrangement for a mounted in a housing straightening rotor straightening machine for straightening wire, wherein the straightening rotor is rotatably driven by a drive means at high speed about its longitudinal axis and inlet and outlet side mounted in the housing and the outlet side has a stub shaft, which projects beyond the local bearing and is driven by a hollow shaft electric motor with an internal drive rotor seated on it.

In Drahtrichtmaschinen wird der zugeführte, vom Coil abgezogene Draht kontinuierlich durch einen mit sehr hoher Drehzahl um seine Längsachse rotierenden Richtrotor befördert, der mit radial versetzten Richtbacken versehen ist. Beim Durchlauf wird der Draht in alle Richtungen gebogen, um anschließend einen geraden Drahtstab ohne Eigenspannungen zu erhalten.In wire straightening machines, the supplied wire withdrawn from the coil is continuously conveyed through a straightening rotor which rotates about its longitudinal axis at a very high speed and which is provided with radially offset straightening jaws. During the pass, the wire is bent in all directions, to then obtain a straight wire rod without residual stresses.

Bei herkömmlichen Richtmaschinen wird der Richtrotor üblicherweise mittels eines im Maschinengehäuse liegenden Antriebs über einen Riementrieb angetrieben, wobei sehr hohe Drehzahlen (bis in dem Bereich von etwa 9 000 - 10 000 U/min.) erreicht werden sollen. Solche Antriebe sind z. B. aus der EP-A1-0 620 058 , der EP-B1-0 313 769 , der GB-B1-711991 oder der DE-A1-10 2005 010 632 bekannt.In conventional leveling machines, the straightening rotor is usually driven by means of a drive located in the machine housing via a belt drive, with very high speeds (up in the range of about 9 000 - 10 000 U / min.) Should be achieved. Such drives are z. B. from the EP-A1-0 620 058 , of the EP-B1-0313769 , of the UK B1-711991 or the DE-A1-10 2005 010 632 known.

Die hohen Drehzahlen der eingesetzten Richtrotoren führen jedoch wegen der auftretenden Kräfte und Temperaturen zu sehr großen Lagerbelastungen und es findet auch eine laufende Verschmutzung der Lager statt, weshalb diese Lager eingangs- und ausgangsseitig des Richtrotors immer wieder ausgewechselt werden müssen. Dies ist bei solchen Riemenantrieben ohne weiteres durchführbar. Jedoch benötigt die bekannte Antriebsanordnung einen vergleichsweise großen Raumbedarf wegen der getrennten Anordnung des Antriebsmotors und des erforderlichen Riementriebs.However, the high speeds of the straightening rotors used lead because of the forces and temperatures to very large bearing loads and there is also an ongoing contamination of the bearings instead, which is why these bearings input and output side of the straightening rotor must be replaced again and again. This is readily feasible in such belt drives. However, the known drive arrangement requires a comparatively large amount of space because of the separate arrangement of the drive motor and the required belt drive.

Kürzlich wurde im Markt eine weitere Antriebsanordnung für solche Richtrotoren bekannt, bei welcher der Antriebsmotor in Form eines Hohlwellen-Synchronmotors mit innenliegendem Antrieb direkt auf einem auslaufseitigen Wellenstumpf des Richtrotors sitzt, wobei er auf diesen aufgeschrumpft ist. Damit läßt sich eine deutlich kompaktere Bauweise erreichen, wobei sich hier jedoch das Problem zeigte, daß es relativ häufig zu einem Maschinenausfall kommt, weil das auslaufseitige Lager des Richtrotors infolge des aufgeschrumpften Antriebsmotors nicht mehr zugänglich ist und nicht ausgewechselt werden kann. Wenn also dieses Lager verschmutzt ist, muß der ganze Richtrotor mit dem aufgeschrumpften Antrieb ausgewechselt werden, was außerordentlich aufwendig ist.Recently, a further drive arrangement for such straightening rotors has been known in the market, in which the drive motor in the form of a hollow shaft synchronous motor with internal drive sits directly on an outlet side stub shaft of the straightening rotor, being shrunk onto it. This can achieve a much more compact design, but here the problem was that it is relatively common to a machine failure, because the outlet side bearing of the straightening rotor is no longer accessible due to the shrunk-drive motor and can not be replaced. So if this camp is dirty, the entire straightening rotor must be replaced with the shrunk drive, which is extremely expensive.

Hier soll nun die Erfindung Abhilfe schaffen und unter Beibehaltung einer raumsparenden Anordnung des Antriebs für den Richtrotor dennoch ein problemfreies, kostengünstiges und auch rasch durchführbares Auswechseln des auslaufseitigen Lagers des Richtrotors ermöglichen.Here, the invention is intended to remedy the situation while still allowing a space-saving arrangement of the drive for the straightening rotor a problem-free, cost-effective and also quickly feasible replacement of the outlet side bearing of the straightening rotor.

Erfindungsgemäß wird dies bei einer Antriebsanordnung der eingangs genannten Art dadurch erreicht, daß der Antriebsrotor des Hohlwellen-Elektromotors auf eine Antriebshülse aufgeschrumpft ist, die ihrerseits auf den Wellenstumpf des Richtrotors aufschiebbar und drehfest an diesem lösbar befestigbar ist.According to the invention this is achieved in a drive arrangement of the type mentioned in that the drive rotor of the hollow shaft electric motor is shrunk onto a drive sleeve, which in turn pushed onto the stub shaft of the straightening rotor and rotationally fixed to this releasably fastened.

Durch die Erfindung ist zunächst eine Lösung geschaffen, bei welcher der Antriebsrotor des Hohlwellen-Elektromotors die auftretenden sehr großen Drehmomente (in einer Größenordnung von ca. 35 Nm) bei sehr hohen Drehzahlen (bis über 10.000 U/min.) infolge des Aufschrumpfens auf eine Antriebshülse sicher an diese übertragen kann, ohne daß dabei die Gefahr eines Ablösens von Rotorwicklungen bei diesen hohen Drehzahlen auftritt. Dadurch, daß bei der Erfindung jedoch der Antriebsrotor nicht mehr direkt auf den Wellenstumpf aufgeschrumpft wird, sondern auf die Antriebshülse als einem eigenen, vom Wellenstumpf getrennten Element, besteht nun die Möglichkeit, durch anschließendes Aufschieben der Antriebshülse auf den Wellenstumpf des Richtrotors und durch eine drehfeste, aber lösbare Verbindung derselben an diesem die Antriebsleistung des Elektromotors sicher auf den Richtrotor zu übertragen, wobei der Hohlwellen-Elektromotor auch problemfrei zum Auswechseln des auslaufseitigen Lagers des Richtrotors von dessen Wellenstumpf wieder abgenommen werden kann.The invention provides a solution is first created in which the drive rotor of the hollow shaft electric motor occurring very large torques (in the order of about 35 Nm) at very high speeds (up to over 10,000 rev / min.) As a result of shrinking on a Drive sleeve can safely transmit to this, without causing the risk of detachment of rotor windings occurs at these high speeds. The fact that in the invention, however, the drive rotor is no longer shrunk directly onto the stub shaft, but on the drive sleeve as its own, separated from the stub shaft element, it is now possible by subsequent sliding of the drive sleeve on the stub shaft of the straightening rotor and by a non-rotatable but detachable connection of the same to this to transmit the drive power of the electric motor safely to the straightening rotor, the hollow shaft electric motor can also be easily removed again for replacing the outlet side bearing of the straightening rotor of the stub shaft.

Durch die erfindungsgemäßen Maßnahmen wird in einfacher, aber sehr wirkungsvoller Weise das bisher bei dem bekannten, auf dem Wellenstumpf aufgeschrumpften Antriebsrotor des Elektromotors bestehende Problem der Unzugänglichkeit des auslaufseitigen Lagers des Richtrotors gelöst und damit ein leichtes Auswechseln dieses Lager, sobald erforderlich, bei gleichzeitiger Beibehaltung eines nur sehr geringen Platzbedarfes für die Antriebseinrichtung ermöglicht.The inventive measures is in a simple, but very effective way previously in the known, shrunk onto the stub shaft drive rotor of the electric motor existing problem of inaccessibility of the outlet side of the camp Straightening rotor solved and thus easy replacement of this camp, when required, while maintaining only a very small footprint for the drive device allows.

Eine vorteilhafte Ausgestaltung der Erfindung besteht nun darin, daß die Antriebshülse auf dem Wellenstumpf des Richtrotors mittels einer radial wirksamen Spanneinrichtung drehfest mit diesem verbunden wird, wobei besonders bevorzugt als Spanneinrichtung ein Doppelscheiben-Spannsatz, also ein Spannsatz mit zwei gegeneinander verspannbaren Ringspannelementen, eingesetzt wird. Der Vorteil eines solchen Spannsatzes besteht insbesondere auch darin, daß keine genau plazierte Montage dieses Spannsatzes erforderlich ist, weil er an irgendeiner Stelle des vom Antriebsrotor axial vorstehenden Abschnitts der Antriebshülse angebracht werden kann. Der Spannsatz kann sowohl vorne (also an der Antriebshülse motoreingangsseitig) oder hinten (an der Antriebshülse motorausgangsseitig) oder auch sowohl vorne, wie auch hinten (also in Form von zwei solchen Spannsätzen) vorgesehen sein. Ganz besonders vorteilhaft ist jedoch die Verwendung eines Doppelkegel-Spannsatzes, über den ganz erhebliche radiale Spannkräfte ohne Schwierigkeiten aufgebracht werden können.An advantageous embodiment of the invention consists in the fact that the drive sleeve on the stub shaft of the straightening rotor by means of a radially effective clamping device rotatably connected thereto, which is particularly preferably used as a clamping device a double-disc clamping set, ie a clamping set with two mutually braced ring clamping elements. The advantage of such a clamping set is in particular that no exactly placed assembly of this clamping set is required because it can be attached at any point of the drive rotor axially projecting portion of the drive sleeve. The clamping set can be provided both at the front (ie at the drive sleeve on the motor input side) or at the rear (at the drive sleeve on the motor output side) or also at the front as well as at the rear (ie in the form of two such clamping sets). However, the use of a double-cone clamping set over which very considerable radial clamping forces can be applied without difficulty is particularly advantageous.

Die Antriebshülse kann aus jedem geeigneten Material gefertigt werden, besteht jedoch vorzugsweise aus Stahl. Auch bei den Ringspannelementen eines solchen Doppelscheiben-Spannsatzes handelt es sich bevorzugt um Stahlscheiben.The drive sleeve can be made of any suitable material, but is preferably made of steel. Also in the ring tension elements of such a double-disc clamping set are preferably steel discs.

Eine weiter bevorzugte Ausgestaltung der Erfindung besteht auch darin, daß die Antriebshülse axial gegen einen geeignet am Wellenstumpf des Richtrotors angeordneten Wellenabsatz drehfest verspannt ist, etwa mittels einer auf den Wellenstumpf axial aufschraubbaren Spannmutter, wobei besonders bevorzugt zwischen Antriebshülse und Wellenstumpf eine Passfeder zur Sicherstellung der Drehfestigkeit zwischengeschaltet ist.A further preferred embodiment of the invention is also the fact that the drive sleeve is axially clamped against a suitably arranged on the stub shaft of the straightening rotor shaft shoulder, such as by means of a stub axially aufschraubbaren stub nut, more preferably between the drive sleeve and stub shaft a feather key to ensure the torsional strength is interposed.

Es versteht sich aber von selbst, daß die Antriebshülse auf dem Wellenstumpf des Richtrotors auch in jeder anderen geeigneten Weise lösbar verspannt werden kann, etwa auch durch Einsatz geeigneter Spannkeile o. ä.However, it goes without saying that the drive sleeve on the stub shaft of the straightening rotor can be releasably braced in any other suitable manner, such as by using suitable clamping wedges o. Ä.

Als Hohlwellen-Elektromotor kann jeder für die erforderlichen großen Drehmomente und die sehr hohen Drehzahlen geeignete Elektromotor eingesetzt werden. Besonders bevorzugt wird jedoch als Hohlwellen-Elektromotor ein Synchronmotor oder ein Asynchron-Motor vorgesehen.As a hollow shaft electric motor, any suitable for the required large torques and very high speeds electric motor can be used. Particularly preferred, however, a synchronous motor or an asynchronous motor is provided as a hollow shaft electric motor.

Die Erfindung wird nachfolgend anhand der Zeichnungen im Prinzip beispielshalber noch näher erläutert. Es zeigen:

  • Fig. 1 eine perspektivische Ansicht (von schräg oben) auf eine Drahtrichtmaschine mit aufgeklappter Abdeckhaube;
  • Fig. 2 eine perspektivische Darstellung der Richteinheit aus der Richtmaschine von Fig. 1, sowie
  • Fig. 3 eine vergrößerte Detaildarstellung aus Fig. 2, die den Endabschnitt des Richtrotors mit angeflanschtem Antriebsmotor zeigt, wobei letzterer im Schnitt (entlang Schnittlage III-III in Fig. 2) dargestellt ist.
The invention will now be explained in more detail by way of example with reference to the drawings in principle. Show it:
  • Fig. 1 a perspective view (obliquely from above) on a wire straightener with unfolded cover;
  • Fig. 2 a perspective view of the straightening unit of the straightening machine of Fig. 1 , such as
  • Fig. 3 an enlarged detail Fig. 2 showing the end portion of the straightening rotor with flanged drive motor, the latter in section (along cutting position III-III in Fig. 2 ) is shown.

In Fig. 1 ist in Schrägansicht von vorne oben eine Richtmaschine 10 mit aufgeklappter Abdeckhaube 12 gezeigt. Letztere ist an einem Maschinengestell 14 verklappbar angebracht.In Fig. 1 is shown in an oblique view from the front above a straightening machine 10 with unfolded cover 12. The latter is attached to a machine frame 14 hinged.

Die Richtmaschine 10 dient zum Geraderichten eines in Richtung Z zugeführten Drahtes 16 und weist mehrere Einzugsmodule 18 auf, von denen in der dargestellten Ausführungsform zwei (in Drahtförderrichtung Z gesehen) vor und eine hinter einer Richteinheit 20 angebracht sind.The straightening machine 10 serves to straighten a wire 16 fed in the direction Z and has a plurality of draw-in modules 18, two of which (seen in the wire conveying direction Z) are mounted in front of and one behind a straightening unit 20 in the illustrated embodiment.

Diese Richteinheit 20 ist als Einzelheit in Fig. 2 vergrößert dargestellt:This straightening unit 20 is shown enlarged as a detail in FIG. 2:

Die Richteinheit 20 weist ein Gehäuse 22 auf, in dem ein mit hoher Geschwindigkeit rotierender Richtrotor 24 gelagert ist, der seinerseits über einen Hohlwellen-Elektromotor 26 in Form eines Synchronmotors angetrieben wird.The straightening unit 20 has a housing 22 in which a straightening rotor 24 rotating at high speed is mounted, which in turn is driven via a hollow-shaft electric motor 26 in the form of a synchronous motor.

Wie die Fig. 1 und 2 zeigen, ist der Hohlwellen-Elektromotor 26 konzentrisch zur Längsachse des Richtrotors 24 angebracht, und zwar (in Drahtförderrichtung Z gesehen) direkt hinter einer hinteren Seitenwand 28 des Gehäuses 22, in der ausgangsseitig ein (in den Figuren im einzelnen nicht dargestelltes) Lager für den Richtrotor 24 angeordnet ist, der eingangsseitig in einer dortigen Seitenwand 30 des Gehäuses 22 ebenfalls mittels eines (nicht im einzelnen dargestellten) Lagers gelagert ist.As the Fig. 1 and 2 show, the hollow shaft electric motor 26 is mounted concentrically to the longitudinal axis of the straightening rotor 24, (viewed in the wire conveying direction Z) directly behind a rear side wall 28 of the housing 22, in the output side (not shown in detail in the figures) bearing for the Straightening rotor 24 is arranged, which is also mounted on the input side in a local side wall 30 of the housing 22 by means of a (not shown in detail) bearing.

Von einer näheren Beschreibung des Aufbaus des Richtrotors 24 selbst kann man der mit mehreren, im Abstand hintereinander in seiner Längsrichtung angebrachten, gegen die Längsachse radial versetzten und radial verstellbaren Richtbacken versehen ist, soll hier nicht näher eingegangen werden, weil es sich dabei um jede geeignete und bekannte Richtrotor-Gestaltung handeln kann, wie eine solche z. B. aus der EP-B1-0 313 769 oder auch der EP-A1-0 620 058 beispielshalber entnommen werden kann.Of a more detailed description of the structure of the straightening rotor 24 itself can be provided with several, at a distance one behind the other in its longitudinal direction, radially offset and radially adjustable straightening jaws provided against the longitudinal axis is not intended here Be discussed in more detail, because it may be any suitable and known Richtrotor design, such as such. B. from the EP-B1-0313769 or even the EP-A1-0 620 058 can be taken by way of example.

In Fig. 3, die in nochmals vergrößerter, weiterer Detaildarstellung das auslaufseitige Ende des Richtrotors 24 und dazu, im Schnitt, den dort angebrachten Hohlwellen-Elektromotor 26 zeigt, ist das Anbringen des letzteren an der Richteinheit 20 im einzelnen dargestellt:In Fig. 3 which shows the outlet-side end of the straightening rotor 24 and, in section, the hollow-shaft electric motor 26 mounted there in a further enlarged, further detailed representation, the attachment of the latter to the straightening unit 20 is shown in detail:

Der Hohlwellen-Elektromotor 26 umfaßt dabei ein an die (in Drahtförderrichtung Z gesehen) hintere Seitenwand 28 des Richtrotorgehäuses 22 angeschraubtes Motorgehäuse 32, wobei nur eine Schraubbefestigungsstelle 34 angedeutet ist.The hollow-shaft electric motor 26 comprises a motor housing 32 screwed to the rear sidewall 28 of the straightening rotor housing 22 (seen in the wire conveying direction Z), only one screw fastening point 34 being indicated.

In dem Motorgehäuse 32 sind ein Kühlkörper 36 und ein Antriebsstator 38 drehfest angebracht.In the motor housing 32, a heat sink 36 and a drive stator 38 are mounted rotatably.

Über einen Anschluß 40 wird der Kühlköper 36 ständig mit einer geeigneten Kühlflüssigkeit (Wasser) versorgt, wobei über einen (in Fig. 3 nicht dargestellten) Abfluß ein Kühlkreislauf sichergestellt ist, durch den der Hohlwellen-Elektromotor 26 ständig gekühlt und damit ein Überhitzen desselben verhindert werden kann.Via a terminal 40, the cooling body 36 is constantly supplied with a suitable cooling liquid (water), wherein via a (in Fig. 3 not shown) drain a cooling circuit is ensured by the hollow shaft electric motor 26 is constantly cooled and thus overheating of the same can be prevented.

Der Antriebsrotor 42 des Hohlwellen-Elektromotors 26 ist auf eine Antriebshülse 44 aufgeschrumpft, wodurch eine außerordentlich starke und feste Verbindung zwischen beiden Teilen entsteht. Der Hohlwellen-Elektromotor 26 wird mit seinem auf die Antriebshülse 44 aufgeschrumpften Antriebsrotor 42 zur Montage auf einen Wellenstumpf 46 des Richtrotors 24 aufgesteckt. Wie Fig. 3 zeigt, liegt dieser Wellenstumpf 46 des Richtrotors 24 auf der Seite der Seitenwand 28 des Richtrotorgehäuses 22, die dem Richtrotor 24 gegenüber liegt, und steht vor, so daß von dorther der Hohlwellen-Elektromotor 26 mit der Antriebshülse 24 unschwer zur Montage aufgeschoben werden kann.The drive rotor 42 of the hollow-shaft electric motor 26 is shrunk onto a drive sleeve 44, resulting in an extremely strong and firm connection between the two parts. The hollow shaft electric motor 26 is attached with its shrunk onto the drive sleeve 44 drive rotor 42 for mounting on a stub shaft 46 of the straightening rotor 24. As Fig. 3 shows, this stub shaft 46 of the straightening rotor 24 is located on the side wall 28 of the Richtrotorgehäuses 22, which is opposite the straightening rotor 24, and protrudes, so that from there the hollow shaft electric motor 26 can be pushed easily with the drive sleeve 24 for mounting.

Bei der in Fig. 3 gezeigten Ausführungsform wird nach dem Aufschieben des Hohlwellen-Elektromotors 26 und der Befestigung dessen Gehäuses an der Seitenwand 28 bei abgenommenem Motordeckel 48 die Antriebshülse 44 an ihrer axial über den Antriebsrotor 42 auf dessen der Seitenwand 28 gegenüberliegenden Seite vorstehenden Abschnitt mittels eines Doppelscheiben-Spannsatzes in Form eines Doppelkegel-Spannsatzes 50 radial und drehfest auf dem Wellenstumpf 46 fixiert.At the in Fig. 3 shown embodiment after pushing the hollow shaft electric motor 26 and the attachment of the housing on the side wall 28 with the motor cover 48, the drive sleeve 44 on its axially beyond the drive rotor 42 on the side wall 28 opposite side projecting portion by means of a double-disc clamping set in the form a double cone clamping set 50 radially and rotationally fixed on the stub shaft 46.

Dabei besteht der eingesetzte Doppelkegel-Spannsatz 50 aus zwei axial in einem kleinen Abstand zueinander versetzten Stahlscheiben 52 (vgl. Fig. 3), die auf ihren radial innen liegenden Endflächen an ihren einander zugewandten Seiten in Richtung von der anderen Stahlscheibe weg jeweils eine sich in ihrem Durchmesser verringernde Kegelfläche 54 aufweisen. Mit diesen dachförmig gegeneinander angestellten Kegelflächen 54 laufen sie axial jeweils gegen eine zu den Kegelflächen 54 komplementär angeordnete kegelförmige Außenfläche eines zwischen den Stahlscheiben 52 und der Antriebshülse 44 zwischengeschalteten Spannringes 56. Werden die beiden Stahlscheiben 52 durch entsprechende Spannmittel 58 (die in Fig. 3 nur prinzipiell angedeutet sind) in Axialrichtung des Wellenstumpfes 46 gegeneinander verspannt, dann wird durch ihre beiden Kegelflächen 54, welche gegen die komplementär geneigten, zugeordneten Außen-Umfangsflächen-Abschnitte des Spannringes 56 anlaufen, dieser axial zusammengedrückt und die erwünschte axiale Druckspannung damit auf die Antriebshülse 44 ausgeübt. Mit solchen Doppelkegelspannsätzen können so starke Andruckkräfte aufgebracht werden, daß ein sicherer, drehfester Sitz der Antriebshülse 44 auf dem Wellenstumpf 46 problemfrei erreicht werden kann. Falls gewünscht, könnte die Antriebshülse 44 auch auf ihrer der in Fig. 3 gezeigten Lage des Doppelkegelspannsatzes 50 gegenüberliegenden Seite mit einem solchen Spannsatz gegen den Wellenstumpf 46 verspannt werden oder es könnte auch gleichermaßen dort noch ein zusätzlicher solcher Spannsatz angebracht werden. In diesem Fall wäre es lediglich erforderlich, daß dann die Antriebshülse 44 sich auf der gegenüberliegenden Seite auch noch über die dortige Endfläche des Antriebsrotors 42 hinaus axial erstreckt.In this case, the double-cone clamping set 50 used consists of two steel disks 52 axially offset at a small distance from one another (cf. Fig. 3 ) on their radially inner end surfaces on their facing sides in the direction of the other Steel disc away each have a decreasing in diameter conical surface 54. With these roof-shaped against each other employed conical surfaces 54 they run axially against a complementary to the conical surfaces 54 conical outer surface of a between the steel discs 52 and the drive sleeve 44 intermediate clamping ring 56. The two steel discs 52 by corresponding clamping means 58 (in Fig. 3 are indicated only in principle) in the axial direction of the stub shaft 46 against each other, then by its two conical surfaces 54 which run against the complementary inclined, associated outer peripheral surface portions of the clamping ring 56, this axially compressed and the desired axial compressive stress thus on the drive sleeve 44 exercised. With such double cone clamping sets so strong pressure forces can be applied so that a secure, rotationally fixed seat of the drive sleeve 44 can be achieved on the stub shaft 46 problem-free. If desired, the drive sleeve 44 could also on its in Fig. 3 shown position of the double cone clamping set 50 opposite side with such a clamping set against the stub shaft 46 are braced or it could also be equally there still an additional such clamping set attached. In this case, it would only be necessary for the drive sleeve 44 to extend axially beyond the end surface of the drive rotor 42 on the opposite side.

Es versteht sich von selbst, daß (wie in Fig. 3 nicht im einzelnen erkennbar) natürlich zwischen Antriebsstator 38 und dem Antriebsrotor 42 ein Luftspalt 60 vorliegt.It goes without saying that (as in Fig. 3 not shown in detail) of course between the drive stator 38 and the drive rotor 42, an air gap 60 is present.

Der Hohlwellen-Elektromotor 26 wird mittels des Rotordeckels 48 mit einem Flansch und einem Spannring 62 nach außen abgeschlossen. Zusätzlich ist noch eine Auslaufbuchse 64 zur Drahtführung vorgesehen.The hollow shaft electric motor 26 is closed by means of the rotor cover 48 with a flange and a clamping ring 62 to the outside. In addition, an outlet bushing 64 is still provided for wire guide.

Die Funktion der Richtmaschine aus den Fig. 1 bis 3 ist wie folgt:The function of the leveler from the Fig. 1 to 3 is as follows:

Der Draht 16 wird von dem Einzugsmodulen 18 von einem (nicht gezeigten) Coil abgezogen und der Richteinheit 20 zugeführt. In ihr wird der Draht 16 durch den rotierenden Richtrotor 24 hindurch befördert, dabei in allen Richtungen gebogen und damit gerade gerichtet. Nach dem Richtrotor 24 durchläuft der Draht 16 den koaxial angebrachten Hohlwellen-Elektromotor 26, wobei ein nach diesem noch einmal vorgesehener Einzugsmodul 18 die Funktion hat, den Draht 16 aus dem Richtrotor 24 herauszuziehen. Schließlich kann der Draht 16 in geeigneter Weise weiterverarbeitet oder weitertransportiert werden.The wire 16 is withdrawn from the feed module 18 from a coil (not shown) and fed to the straightening unit 20. In her, the wire 16 is conveyed through the rotating straightening rotor 24, thereby bent in all directions and thus straightened. After the straightening rotor 24, the wire 16 passes through the coaxially mounted hollow-shaft electric motor 26, wherein after this once again provided feed module 18 has the function to pull the wire 16 from the straightening rotor 24. Finally, the wire 16 may be further processed or further transported in a suitable manner.

Im Falle eines Lagerschadens des Lagers des Richtrotors 24, das sich in der hinteren Seitenwand 28 des Richtrotorgehäuses 22 befindet, kann infolge der lösbaren Verbindung der Antriebshülse 44 am Antriebsrotor 42 der Hohlwellen-Elektromotor 26 zusammen mit der Antriebshülse 44 von dem Wellenstumpf 46 gelöst und abgenommen werden. Danach kann das Lager problemlos abgezogen und durch ein neues Lager ersetzt werden.In the event of a bearing damage of the bearing of the straightening rotor 24, which is located in the rear side wall 28 of the Richtrotorgehäuses 22, due to the detachable connection of the Drive sleeve 44 on the drive rotor 42 of the hollow shaft electric motor 26 are released together with the drive sleeve 44 of the stub shaft 46 and removed. Thereafter, the bearing can easily be removed and replaced with a new bearing.

Claims (7)

  1. Driving assembly for a straightening rotor (24), supported in a housing (22), of a straightening machine (10) for straightening wire (16), said straightening rotor (24) being drivable in rotation about its longitudinal axis by a driving unit (26) at a high rotational speed as well as being supported, at its inlet and outlet ends, in the housing (22) and comprising a shaft butt (46) at its outlet end, said shaft butt (46) protruding over the outlet-side bearing and being driven by a hollow-shaft electric motor (26) with an internal driving rotor (42), said electric motor (26) being fitted on the shaft butt (46), characterized in that the driving rotor (42) of the hollow-shaft electric motor (26) is shrunk onto a driving sleeve (44) which can be slid onto the shaft butt (46) of the straightening rotor (24) and can be mounted thereon in a manner secured against rotation and in a releasable manner.
  2. Driving assembly according to claim 1, characterized in that the driving sleeve (44) on the shaft butt (46) of the straightening rotor (24) is connected to the shaft butt (46), in a manner secured against rotation, by means of a radially acting clamping unit (50).
  3. Driving assembly according to claim 2, characterized in that the radially acting clamping unit consists of a double disk clamping assembly (52, 56).
  4. Driving assembly according to claim 3, characterized in that the double disk clamping assembly is a double cone clamping assembly (52, 56).
  5. Driving assembly according to claim 1, characterized in that the driving sleeve (44) is axially clamped against a shaft shoulder of the shaft butt (46) in a manner secured against rotation.
  6. Driving assembly according to any one of claims 1 to 5, characterized in that a fitting key is arranged between the driving sleeve (44) and the shaft butt (46).
  7. Driving assembly according to any one of claims 1 to 6, characterized in that the hollow-shaft electric motor (26) is a synchronous motor.
EP06008192A 2006-04-20 2006-04-20 Drive arangement for a rotor of a straightening machine for straightening of wire Not-in-force EP1847337B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE502006001133T DE502006001133D1 (en) 2006-04-20 2006-04-20 Drive arrangement for a mounted in a housing straightening rotor of a straightening machine for straightening wire
AT06008192T ATE401150T1 (en) 2006-04-20 2006-04-20 DRIVE ARRANGEMENT FOR A RIGHTENING ROTOR MOUNTED IN A HOUSING OF A RIGHTENING MACHINE FOR STRAIGHTENING WIRE
EP06008192A EP1847337B1 (en) 2006-04-20 2006-04-20 Drive arangement for a rotor of a straightening machine for straightening of wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06008192A EP1847337B1 (en) 2006-04-20 2006-04-20 Drive arangement for a rotor of a straightening machine for straightening of wire

Publications (2)

Publication Number Publication Date
EP1847337A1 EP1847337A1 (en) 2007-10-24
EP1847337B1 true EP1847337B1 (en) 2008-07-16

Family

ID=36968949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06008192A Not-in-force EP1847337B1 (en) 2006-04-20 2006-04-20 Drive arangement for a rotor of a straightening machine for straightening of wire

Country Status (3)

Country Link
EP (1) EP1847337B1 (en)
AT (1) ATE401150T1 (en)
DE (1) DE502006001133D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20080634A1 (en) * 2008-10-15 2010-04-16 Schnell Spa EQUIPMENT FOR STRAIGHTENING METAL AND SIMILAR PROFILES
CN108907033A (en) * 2018-08-28 2018-11-30 德州市八骏焊割设备附件有限公司 High speed low noise steel wire twists off machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3264855A (en) * 1963-09-17 1966-08-09 Air Reduction Demountable hollow armature wire straightener
US3543810A (en) * 1968-06-12 1970-12-01 Union Carbide Corp Rotary wire welding straightener

Also Published As

Publication number Publication date
DE502006001133D1 (en) 2008-08-28
EP1847337A1 (en) 2007-10-24
ATE401150T1 (en) 2008-08-15

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