EP1181994B1 - Device for the production of annularly corrugated tubes - Google Patents

Device for the production of annularly corrugated tubes Download PDF

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Publication number
EP1181994B1
EP1181994B1 EP00402299A EP00402299A EP1181994B1 EP 1181994 B1 EP1181994 B1 EP 1181994B1 EP 00402299 A EP00402299 A EP 00402299A EP 00402299 A EP00402299 A EP 00402299A EP 1181994 B1 EP1181994 B1 EP 1181994B1
Authority
EP
European Patent Office
Prior art keywords
tube
pressure roller
corrugation
gears
teeth
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.)
Expired - Lifetime
Application number
EP00402299A
Other languages
German (de)
French (fr)
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EP1181994A1 (en
Inventor
Ernst Hoffmann
Klaus-D. Jank
Michael Meyer
Robert Strohmeyer
Friedrich Harten
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nexans SA
Original Assignee
Nexans SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nexans SA filed Critical Nexans SA
Priority to ES00402299T priority Critical patent/ES2200800T3/en
Priority to DE50003453T priority patent/DE50003453D1/en
Priority to DK00402299T priority patent/DK1181994T3/en
Priority to AT00402299T priority patent/ATE248037T1/en
Priority to EP00402299A priority patent/EP1181994B1/en
Priority to AU55890/01A priority patent/AU778357B2/en
Priority to CN01125514.5A priority patent/CN1222376C/en
Priority to BR0103426-0A priority patent/BR0103426A/en
Priority to CA2355172A priority patent/CA2355172C/en
Priority to US09/930,309 priority patent/US6550300B2/en
Priority to JP2001247026A priority patent/JP2002102941A/en
Publication of EP1181994A1 publication Critical patent/EP1181994A1/en
Application granted granted Critical
Publication of EP1181994B1 publication Critical patent/EP1181994B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D15/00—Corrugating tubes
    • B21D15/04—Corrugating tubes transversely, e.g. helically
    • B21D15/06—Corrugating tubes transversely, e.g. helically annularly
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
    • B21C37/205—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls with annular guides

Definitions

  • the invention relates to a device for producing ring-shaped corrugated metal pipes according to the preamble of claim 1.
  • From CH-A-275 509 is a device for the production of corrugated pipes with a um the workpiece rotating pressure roller known, in which the corrugation by teeth the pressure roller (gear) is molded, and the pressure roller by one Longitudinal axis of the tube is rotatably supported and its axis of rotation during the generation of the corrugation even in a perpendicular to the pipe longitudinal axis Plane revolves around the pipe fed to the pressure roller, which in turn passes through its Feed rotates the pressure roller.
  • three pressure rollers are preferred, which attack the pipe offset by 120 °.
  • the tooth tips on the outer circumference the teeth of the pressure rollers are concavely adapted to the tube diameter formed so that the pressure rollers a self-contained deformation tool form.
  • a device for producing ring-shaped corrugated is Metal pipes are known in which at least one pressure roller rotating around a smooth pipe is provided.
  • the pressure roller has a variety of teeth, which the waves form into the smooth tube.
  • the pressure roller is around one to the pipe length axis right-angled axis rotatable. Its axis of rotation runs around the smooth tube during the generation of the waves in a plane perpendicular to the pipe length axis.
  • the driven smooth tube ensures a rotation of the Pressure roller around the axis of rotation of the pressure roller.
  • the object of the present invention is to produce metal tubes with an annular corrugation, the ratio of corrugation depth W t to corrugation pitch W s being greater than 0.3.
  • the wave depth W t is to be understood as the radial distance between a wave crest and the wave trough.
  • the wave pitch W s is the distance between two wave crests. The extremely deep corrugation should be generated without further measures, ie during the corrugation process.
  • FIGS. 1 to 7 Exemplary embodiments explained in more detail.
  • Figure 1 is a side view of a system for producing a coaxial High-frequency cable shown with a ring-shaped corrugated outer conductor.
  • the inner conductor 2 which is insulated with a foam layer, is removed from a supply coil 1 deducted continuously.
  • a metal band M preferably a copper band, is made of withdrawn from a reel 3 and cleaned in a cleaning system 4.
  • the Metal strip M is then in a forming device 5, which does not consist of several designated form steps exists to a surrounding the insulated inner conductor 2 Slotted tube shaped.
  • the longitudinal slot is welded in a welding device 6.
  • the inside diameter of the welded pipe is slightly larger than the outside diameter of the insulated inner conductor 2 so that the insulating layer is not caused by the welding heat is affected.
  • a collet trigger 7 By means of a collet trigger 7, the welded pipe as well the insulated inner conductor 2 is transported through the system in the direction of the arrows.
  • the Collet trigger 7 has a plurality of pairs of jaws 7a, which is the welded Grip the pipe in a pincer shape.
  • the jaw pairs 7a are on an endless chain 7b attached,
  • the corrugated device 8 is seen behind the collet trigger 7 in the direction of flow arranged in which a corrugated metal tube is produced from the smooth metal tube, whose troughs sit closely on the insulating layer and press it in a little. On in this way a coaxial radio frequency cable is obtained in which the gap between the insulating layer and the outer conductor is sealed.
  • the insulated inner conductor 2 provided with the corrugated metal tube is finally opened a cable drum 9 wound up.
  • a dancer arrangement 10 regulates the Pulling speed of the cable drum 9.
  • a corrugated outer conductor can be used in a manner not shown Plastic outer jacket are extruded.
  • the corrugated device 8 is described in more detail with reference to FIGS. 2 to 5.
  • a shaft bushing 12 is fastened to a rotatable shaft head 11.
  • the inner one Diameter of the guide bush 12 is approximately equal to the outer diameter of the welded smooth tube G.
  • the guide bush 12 has a recess 12a, in which engages the pressure roller 13 functioning as a corrugated tool.
  • the pressure roller 13 is in a bearing block 14 is freely rotatable.
  • the bearing block 14 is by means of a Adjustment spindle 15, which is guided in a threaded bush 16, in the radial direction adjustable.
  • the threaded bushing 16 is fixedly connected to the shaft head 11 Head plate 17 rotatably mounted. With a counterweight is designated, which for ensures a smooth run of the corrugated device 8.
  • the depth of the corrugation to be introduced into the smooth tube G is determined by the Threaded spindle 15 set.
  • the Pressure roller 13 When the shaft head 11 is driven in rotation, the Pressure roller 13 the smooth tube G and forms the corrugation. Since the smooth tube G a feed is given by the collet trigger 7, the pressure roller 13 is so driven that it rotates about its axis of rotation. This causes the last curl to appear generating tooth of the pressure roller 13 from the trough and the subsequent tooth penetrates into the advanced smooth tube G. In this way, with the order Pipe longitudinal axis rotating and driven about its own axis of rotation pressure roller 13 continuously produces a tube with an annular corrugation.
  • FIGs 4 and 5 is a corrugated device with two opposite one another Pressure rollers 13 shown. In this way, at the same speed of circulation Wellerkopfes 11 can be achieved twice the production speed.
  • FIG. 6 is intended to illustrate the principle of the new corrugation process.
  • the pressure roller 13 is with respect to its axis of rotation so approached the central axis of the smooth tube that the Immerse teeth Z in the wall of smooth tube G and when rotating the Create pressure roller 13 around the central axis of the smooth tube G an annular corrugation.
  • the pressure roller is turned in the direction of the arrow, so that after the completion of a wave valley, the next tooth Z into the smooth tube wall dips.
  • the number of teeth Z is limited to 7-11, because only this A ratio of corrugation depth to corrugation slope of more than 0.3 can be achieved.
  • tip diameter of the pressure roller between at 2.3 up to 3.5 times the shaft pitch or the shaft distance. Too small Tip circle diameter leads to a mechanically unstable pressure roller 13, whereas a too large tip circle diameter does not allow the generation of a deep corrugation. Under the diameter of the teeth Z enveloping the tip circle diameter be understood
  • the heads of the teeth Z are flat, as can be seen from FIGS. 3 and 5.
  • the width of the teeth Z is more than the diameter of the corrugated tube in the Area of the wave valley. This creates a particularly smooth surface in the area of Tidal wave reached.
  • the fact that the teeth Z are hardened and polished, especially in the area of the tooth head. This allows the Reduce abrasion on both teeth Z and pipe.
  • the flanks of the teeth Z run parallel to one another. This ensures that the Teeth Z do not touch the wave flanks when leaving the trough and thus leave no unwanted impressions.
  • the height of the teeth is greater than the corrugation depth. This is particularly evident from FIG. 7. There the ratio of tooth height Z t to corrugation depth W t is greater than 1.2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Flexible Shafts (AREA)
  • Forging (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Wire Processing (AREA)

Abstract

The appliance has a toothed pressure roller rotating about a smooth tube (G). The roller has between 7 and 11, pref. between 8 and 10 teeth, and the teeth have flat heads and almost parallel sides. The smooth tube is guided tightly in a guide sleeve (12) in front of an behind the contact with the pressure roller (13). The width of the teeth is the same as, or larger than, the diameter of the tube in a corrugation base. There may be two or more pressure rollers. The teeth have hardened and/or polished heads, or inset hard metal parts.

Description

Die Erfindung betrifft eine Vorrichtung zur Herstellung ringförmig gewellter Metallrohre nach dem Oberbegriff des Anspruchs 1.The invention relates to a device for producing ring-shaped corrugated metal pipes according to the preamble of claim 1.

Aus der CH-A-275 509 ist eine Vorrichtung zur Herstellung von Wellrohren mit einer um das Werkstück umlaufenden Druckrolle bekannt, bei welcher die Wellung durch Zähne der Druckrolle (Zahnrad) eingeformt wird, und die Druckrolle um eine zur Rohrlängsachse rechtwinklige Achse drehbar gelagert ist und deren Drehachse während der Erzeugung der Wellung selbst in einer zur Rohrlängsachse senkrecht stehenden Ebene um das der Druckrolle zugeführte Rohr umläuft, das seinerseits durch seinen Vorschub die Druckrolle dreht. Bevorzugt werden bei dieser Vorrichtung drei Druckrollen, die um 120° versetzt an dem Rohr angreifen. Die Zahnköpfe der am äußeren Umfang der Druckrollen befindlichen Zähne sind konkav dem Rohrdurchmesser angepaßt ausgebildet, sodaß die Druckrollen ein in sich geschlossenes Verformungswerkzeug bilden. Mit dieser Ausgestaltung der Druckrollen ist die Herstellung von Rohren mit einer tiefen Wellung nicht möglich. Es wird deshalb vorgeschlagen, zur Erzielung eines kleineren Wellenabstandes und einer größeren Welltiefe das gewellte Rohr durch axiales Stauchen weiter zu verformen. Dies führt jedoch zu einer unkontrollierbaren ungleichmäßigen Wellform. Ein weiterer wesentlicher Nachteil ist darin zu sehen, daß bedingt durch die konkaven Zahnköpfe und die große Anzahl der Zähne auf das Rohr extrem hohe Torsionskräfte einwirken, die eine kontinuierliche Fertigung dünnwandiger Metallrohre erschweren oder sogar unmöglich machen. From CH-A-275 509 is a device for the production of corrugated pipes with a um the workpiece rotating pressure roller known, in which the corrugation by teeth the pressure roller (gear) is molded, and the pressure roller by one Longitudinal axis of the tube is rotatably supported and its axis of rotation during the generation of the corrugation even in a perpendicular to the pipe longitudinal axis Plane revolves around the pipe fed to the pressure roller, which in turn passes through its Feed rotates the pressure roller. In this device, three pressure rollers are preferred, which attack the pipe offset by 120 °. The tooth tips on the outer circumference the teeth of the pressure rollers are concavely adapted to the tube diameter formed so that the pressure rollers a self-contained deformation tool form. With this configuration of the pressure rollers, the production of tubes with a deep curl not possible. It is therefore suggested to achieve a smaller corrugation distance and a greater corrugation depth the corrugated tube by axial Deform further deform. However, this leads to an uncontrollable uneven wave shape. Another major disadvantage is that due to the concave tooth tips and the large number of teeth on the tube act extremely high torsional forces that a continuous production thin-walled Make metal pipes difficult or even impossible.

Aus der US-A-3 780 556 ist eine Vorrichtung zur Herstellung ringförmig gewellter Metallrohre bekannt, bei der mindestens eine um ein Glattrohr umlaufende Druckrolle vorgesehen ist. Die Druckrolle weist eine Vielzahl von Zähnen auf, welche die Wellen in das Glattrohr einformen. Die Druckrolle ist um eine zur Rohrlängenachse rechtwinklige Achse drehbar gelagert. Ihre Drehachse umläuft das Glattrohr während der Erzeugung der Wellen in einer zur Rohrlängenachse senkrecht stehenden Ebene. Das angetriebene Glattrohr sorgt durch seinen Vorschub für eine Drehung der Druckrolle um die Drehachse der Druckrolle. Mit dieser Vorrichtung lassen sich Wellrohre mit einem Verhältnis von Welltiefe zu Wellsteigung von größer als 0,3 nicht herstellen. From US-A-3 780 556 a device for producing ring-shaped corrugated is Metal pipes are known in which at least one pressure roller rotating around a smooth pipe is provided. The pressure roller has a variety of teeth, which the waves form into the smooth tube. The pressure roller is around one to the pipe length axis right-angled axis rotatable. Its axis of rotation runs around the smooth tube during the generation of the waves in a plane perpendicular to the pipe length axis. The driven smooth tube ensures a rotation of the Pressure roller around the axis of rotation of the pressure roller. With this device you can Corrugated pipes with a corrugation depth to corrugation pitch ratio of greater than 0.3 do not produce.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, Metallrohre mit einer ringförmigen Wellung herzustellen, wobei das Verhältnis von Welltiefe Wt zu Wellsteigung Ws größer ist als 0,3. Unter der Welltiefe Wt soll der radiale Abstand zwischen einer Wellenkuppe und dem Wellental verstanden werden. Die Wellsteigung Ws ist der Abstand zweier Wellenkuppen voneinander. Die extrem tiefe Wellung soll ohne weitere Maßnahmen, d. h. beim Wellvorgang erzeugt werden.The object of the present invention is to produce metal tubes with an annular corrugation, the ratio of corrugation depth W t to corrugation pitch W s being greater than 0.3. The wave depth W t is to be understood as the radial distance between a wave crest and the wave trough. The wave pitch W s is the distance between two wave crests. The extremely deep corrugation should be generated without further measures, ie during the corrugation process.

Die Aufgabe wird durch die im Kennzeichen des Anspruchs 1 erfaßten Merkmale gelöst.The object is achieved by the features recorded in the characterizing part of claim 1.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen erfaßt.Further advantageous embodiments of the invention are covered in the subclaims.

Mit Hilfe der Erfindung ist es gelungen, Metallrohre mit einer tiefen Wellung in einem Arbeitsgang herzustellen, die äußerst flexibel sind. Ein weiterer wesentlicher Vorteil der Erfindung ist darin zu sehen, daß die Wellung in Längsrichtung des Metallrohres gesehen gleichmäßig in Bezug auf die Welltiefe und die Wellsteigung ist und von daher die Metallrohre als Leiter von koaxialen Hochfrequenzkabeln aber auch als Hohlleiter hervorragend geeignet sind. Eine Beschädigung der Oberfläche des gewellten Metallrohres im Bereich des Wellentals aber auch im Bereich der Wellenflanken ist nicht gegeben.With the help of the invention it has been possible to produce metal pipes with a deep corrugation in one Manufacturing operations that are extremely flexible. Another major advantage of the Invention is to be seen in the fact that the corrugation in the longitudinal direction of the metal tube seen is even in relation to the corrugation depth and the corrugation slope and therefore the metal pipes as conductors of coaxial high-frequency cables but also as waveguides are excellent. Damage to the surface of the corrugated Metal pipe in the area of the wave valley but also in the area of the wave flanks is not given.

Die Erfindung ist anhand der in den Figuren 1 bis 7 schematisch dargestellten Ausführungsbeispiele näher erläutert.The invention is illustrated schematically in FIGS. 1 to 7 Exemplary embodiments explained in more detail.

In der Figur 1 ist eine seitliche Ansicht einer Anlage zur Herstellung eines koaxialen Hochfrequenzkabels mit einem ringförmig gewellten Außenleiter dargestellt.In Figure 1 is a side view of a system for producing a coaxial High-frequency cable shown with a ring-shaped corrugated outer conductor.

Von einer Vorratsspule 1 wird der mit einer Schaumstoffschicht isolierte Innenleiter 2 kontinuierlich abgezogen. Ein Metallband M, vorzugsweise ein Kupferband wird von einer Bandspule 3 abgezogen und in einer Reinigungsanlage 4 gereinigt. Das Metallband M wird dann in einer Formvorrichtung 5, die aus mehreren nicht näher bezeichneten Formstufen besteht, zu einem den isolierten Innenleiter 2 umgebenden Schlitzrohr geformt. Der Längsschlitz wird in einer Schweißeinrichtung 6 verschweißt. Der Innendurchmesser des geschweißten Rohres ist etwas größer als der Außendurchmesser des isolierten Innenleiters 2, damit die Isolierschicht nicht durch die Schweißwärme beeinträchtigt wird. Mittels eines Spannzangenabzugs 7 wird das geschweißte Rohr sowie der isolierte Innenleiter 2 in Richtung der Pfeile durch die Anlage transportiert. Der Spannzangenabzug 7 weist mehrere Spannbackenpaare 7a auf, die das geschweißte Rohr zangenförmig umfassen. Die Spannbackenpaare 7a sind auf einer endlosen Kette 7b befestigt, die in nicht dargestellter Weise von einem Elektromotor angetrieben wird.The inner conductor 2, which is insulated with a foam layer, is removed from a supply coil 1 deducted continuously. A metal band M, preferably a copper band, is made of withdrawn from a reel 3 and cleaned in a cleaning system 4. The Metal strip M is then in a forming device 5, which does not consist of several designated form steps exists to a surrounding the insulated inner conductor 2 Slotted tube shaped. The longitudinal slot is welded in a welding device 6. The The inside diameter of the welded pipe is slightly larger than the outside diameter of the insulated inner conductor 2 so that the insulating layer is not caused by the welding heat is affected. By means of a collet trigger 7, the welded pipe as well the insulated inner conductor 2 is transported through the system in the direction of the arrows. The Collet trigger 7 has a plurality of pairs of jaws 7a, which is the welded Grip the pipe in a pincer shape. The jaw pairs 7a are on an endless chain 7b attached, which is driven in a manner not shown by an electric motor.

In Durchlaufrichtung gesehen hinter dem Spannzangenabzug 7 ist die Wellvorrichtung 8 angeordnet, in welcher aus dem glatten Metallrohr ein gewelltes Metallrohr erzeugt wird, dessen Wellentäler eng auf der Isolierschicht aufsitzen und diese etwas eindrücken. Auf diese Weise wird ein koaxiales Hochfrequenzkabel erhalten, bei dem der Spalt zwischen der Isolierschicht und dem Außenleiter abgedichtet ist.The corrugated device 8 is seen behind the collet trigger 7 in the direction of flow arranged in which a corrugated metal tube is produced from the smooth metal tube, whose troughs sit closely on the insulating layer and press it in a little. On in this way a coaxial radio frequency cable is obtained in which the gap between the insulating layer and the outer conductor is sealed.

Der mit dem gewellten Metallrohr versehene isolierte Innenleiter 2 wird abschließend auf eine Kabeltrommel 9 aufgewickelt. Eine Tänzeranordnung 10 regelt die Abzugsgeschwindigkeit der Kabeltrommel 9.The insulated inner conductor 2 provided with the corrugated metal tube is finally opened a cable drum 9 wound up. A dancer arrangement 10 regulates the Pulling speed of the cable drum 9.

Auf den gewellten Außenleiter kann abschließend in nicht dargestellter Weise ein Kunststoffaußenmantel aufextrudiert werden.Finally, a corrugated outer conductor can be used in a manner not shown Plastic outer jacket are extruded.

Die Wellvorrichtung 8 ist anhand der Figuren 2 bis 5 näher beschrieben. An einem drehantreibbaren Wellerkopf 11 ist eine Führungsbuchse 12 befestigt. Der innere Durchmesser der Führungsbuchse 12 ist annähernd gleich dem Außendurchmesser des geschweißten Glattrohres G. Die Führungsbuchse 12 weist eine Aussparung 12a auf, in welche die als Wellwerkzeug fungierende Druckrolle 13 eingreift. Die Druckrolle 13 ist in einem Lagerbock 14 frei drehbar gelagert. Der Lagerbock 14 ist mittels einer Verstellspindel 15, die in einer Gewindebuchse 16 geführt ist, in radialer Richtung verstellbar. Die Gewindebuchse 16 ist in einer mit dem Wellerkopf 11 fest verbundenen Kopfplatte 17 drehbar gelagert. Mit 18 ist ein Gegengewicht bezeichnet, welches für einen runden Lauf der Wellvorrichtung 8 sorgt.The corrugated device 8 is described in more detail with reference to FIGS. 2 to 5. On one A shaft bushing 12 is fastened to a rotatable shaft head 11. The inner one Diameter of the guide bush 12 is approximately equal to the outer diameter of the welded smooth tube G. The guide bush 12 has a recess 12a, in which engages the pressure roller 13 functioning as a corrugated tool. The pressure roller 13 is in a bearing block 14 is freely rotatable. The bearing block 14 is by means of a Adjustment spindle 15, which is guided in a threaded bush 16, in the radial direction adjustable. The threaded bushing 16 is fixedly connected to the shaft head 11 Head plate 17 rotatably mounted. With a counterweight is designated, which for ensures a smooth run of the corrugated device 8.

Die Tiefe der in das Glattrohr G einzubringenden Wellung wird durch die Gewindespindel 15 eingestellt. Bei einem Drehantrieb des Wellerkopfes 11 umläuft die Druckrolle 13 das Glattrohr G und formt dabei die Wellung ein. Da dem Glattrohr G durch den Spannzangenabzug 7 ein Vorschub erteilt wird, wird die Druckrolle 13 so angetrieben, daß sie um ihre Drehachse rotiert. Dadurch taucht der die letzte Wellung erzeugende Zahn der Druckrolle 13 aus dem Wellental aus und der nachfolgende Zahn dringt in das vorgeschobene Glattrohr G ein. Auf diese Weise wird mit der um die Rohrlängsachse umlaufenden und um ihre eigene Drehachse angetriebenen Druckrolle 13 in kontinuierlicher Weise ein Rohr mit einer ringförmigen Wellung erzeugt.The depth of the corrugation to be introduced into the smooth tube G is determined by the Threaded spindle 15 set. When the shaft head 11 is driven in rotation, the Pressure roller 13 the smooth tube G and forms the corrugation. Since the smooth tube G a feed is given by the collet trigger 7, the pressure roller 13 is so driven that it rotates about its axis of rotation. This causes the last curl to appear generating tooth of the pressure roller 13 from the trough and the subsequent tooth penetrates into the advanced smooth tube G. In this way, with the order Pipe longitudinal axis rotating and driven about its own axis of rotation pressure roller 13 continuously produces a tube with an annular corrugation.

Wie aus Figur 3 deutlich wird, ist die Druckrolle 13 mittels der Wälzlager 19, die nach außen abgedichtet sind, frei drehbar gelagert.As is clear from Figure 3, the pressure roller 13 by means of the roller bearing 19, the after are sealed outside, freely rotatable.

In den Figuren 4 und 5 ist eine Wellvorrichtung mit zwei einander gegenüberliegenden Druckrollen 13 dargestellt. Auf diese Weise kann bei gleicher Umlaufgeschwindigkeit des Wellerkopfes 11 eine doppelt so hohe Fertigungsgeschwindigkeit erreicht werden.In Figures 4 and 5 is a corrugated device with two opposite one another Pressure rollers 13 shown. In this way, at the same speed of circulation Wellerkopfes 11 can be achieved twice the production speed.

Es versteht sich von selbst, daß auch drei oder mehr Druckrollen 13 einsetzbar sind, wobei sich jeweils die Fertigungsgeschwindigkeit vervielfacht.It goes without saying that three or more pressure rollers 13 can also be used, whereby the production speed multiplies in each case.

Figur 6 soll das Prinzip des neuen Wellverfahrens verdeutlichen. Die Druckrolle 13 ist bezüglich ihrer Drehachse so der Mittelachse des Glattrohres Gangenähert, daß die Zähne Z in die Wandung des Glattrohres G eintauchen und bei einer Rotation der Druckrolle 13 um die Mittelachse des Glattrohres G eine ringförmige Wellung erzeugen. Durch den Vorschub des Glattrohres G wird die Druckrolle in Pfeilrichtung gedreht, sodaß nach Fertigstellung eines Wellentals der nächste Zahn Z in die Glattrohrwandung eintaucht.Figure 6 is intended to illustrate the principle of the new corrugation process. The pressure roller 13 is with respect to its axis of rotation so approached the central axis of the smooth tube that the Immerse teeth Z in the wall of smooth tube G and when rotating the Create pressure roller 13 around the central axis of the smooth tube G an annular corrugation. By feeding the smooth tube G, the pressure roller is turned in the direction of the arrow, so that after the completion of a wave valley, the next tooth Z into the smooth tube wall dips.

Erfindungsgemäß ist die Anzahl der Zähne Z auf 7 - 11 begrenzt, denn nur auf diese Weise ist ein Verhältnis von Welltiefe zu Wellsteigung von mehr als 0,3 zu erzielen.According to the invention, the number of teeth Z is limited to 7-11, because only this A ratio of corrugation depth to corrugation slope of more than 0.3 can be achieved.

Von Vorteil ist ferner, daß der Kopfkreisdurchmesser der Druckrolle zwischen beim 2,3 bis 3,5fachen der Wellsteigung bzw. dem Wellenabstand liegt. Ein zu kleiner Kopfkreisdurchmesser führt zu einer mechanisch instabilen Druckrolle 13, wogegen ein zu großer Kopfkreisdurchmesser die Erzeugung einer tiefen Wellung nicht zuläßt. Unter dem Kopfkreisdurchmesser soll der Durchmesser der die Zähne Z umhüllenden verstanden werdenIt is also advantageous that the tip diameter of the pressure roller between at 2.3 up to 3.5 times the shaft pitch or the shaft distance. Too small Tip circle diameter leads to a mechanically unstable pressure roller 13, whereas a too large tip circle diameter does not allow the generation of a deep corrugation. Under the diameter of the teeth Z enveloping the tip circle diameter be understood

Die Köpfe der Zähne Z sind eben ausgebildet, wie es aus Figur 3 und 5 erkennbar ist. Die Breite der Zähne Z beträgt mehr als der Durchmesser des gewellten Rohres im Bereich des Wellentales. Hierdurch wird eine besonders glatte Oberfläche im Bereich des Wellentales erreicht. Dem gleichen Zweck dient auch die Tatsache, daß die Zähne Z insbesondere im Bereich des Zahnkopfes gehärtet und poliert sind. Dadurch läßt sich der Abrieb sowohl an den Zähnen Z als auch am Rohr verringern.The heads of the teeth Z are flat, as can be seen from FIGS. 3 and 5. The width of the teeth Z is more than the diameter of the corrugated tube in the Area of the wave valley. This creates a particularly smooth surface in the area of Tidal wave reached. The fact that the teeth Z are hardened and polished, especially in the area of the tooth head. This allows the Reduce abrasion on both teeth Z and pipe.

Die Flanken der Zähne Z verlaufen parallel zueinander. Dadurch wird erreicht, daß die Zähne Z beim Verlassen des Wellentales die Wellenflanken nicht berühren und somit keine unerwünschten Eindrückungen hinterlassen.The flanks of the teeth Z run parallel to one another. This ensures that the Teeth Z do not touch the wave flanks when leaving the trough and thus leave no unwanted impressions.

Für die Erzeugung einer optimalen Wellung ist ferner von Vorteil, daß die Höhe der Zähne größer ist als die Welltiefe. Dies geht insbesondere aus Figur 7 hervor. Dort ist das Verhältnis von Zahnhöhe Zt zu Welltiefe Wt größer als 1,2.For the generation of an optimal corrugation, it is also advantageous that the height of the teeth is greater than the corrugation depth. This is particularly evident from FIG. 7. There the ratio of tooth height Z t to corrugation depth W t is greater than 1.2.

Claims (6)

  1. A device for making annular corrugated metal tubes, in particular the outer conductors of coaxial radio frequency cables, by means of at least one pressure roller (13) that rotates around a bare tube, wherein the corrugations are formed into the bare tube (G) by means of the gears (Z) of the pressure roller (13), which is mounted rotatable around an axis that is at a right angle to the lengthwise axis of the tube and the rotation axis of which itself rotates around the bare tube fed to the pressure roller on a perpendicular plane to the lengthwise axis of the tube while making the corrugations, which for its part rotates the pressure roller with its own advance, wherein the gear heads are designed even and the tube is fed tight into a guide bushing (12) before and after the pressure roller (13) engages, characterized by the following features:
    a) the number of gears (Z) amounts to between 7 and 11, preferably between 8 and 10,
    b) the tip diameter of the pressure roller (13) and/or pressure rollers (13) lies between 2.3 to 3.5 times the corrugation interval.
  2. A device according to claim 1, characterized in that the width of the gears is equal or greater than b=Di, wherein Di is the diameter of the tube within the corrugation trough.
  3. A device according to claims 1 or 2, characterized in that the flanks of the gears (Z) run almost parallel to each other.
  4. A device according to claims 1 through 3, characterized in that two or three pressure rollers (13) grab the bare tube with equal distribution over its perimeter.
  5. A device according to claims 1 through 4, characterized in that the gears (Z) are hardened and/or polished at least at the heads.
  6. A device according to claims 1 through 4, characterized in that pieces of hard metal are implanted in the gear heads.
EP00402299A 2000-08-17 2000-08-17 Device for the production of annularly corrugated tubes Expired - Lifetime EP1181994B1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
ES00402299T ES2200800T3 (en) 2000-08-17 2000-08-17 DEVICE FOR THE MANUFACTURE OF METAL TUBES WITH ANNULAR ROLLS.
DE50003453T DE50003453D1 (en) 2000-08-17 2000-08-17 Device for producing ring-shaped corrugated metal pipes
DK00402299T DK1181994T3 (en) 2000-08-17 2000-08-17 Apparatus for producing annular corrugated tubes
AT00402299T ATE248037T1 (en) 2000-08-17 2000-08-17 DEVICE FOR PRODUCING RING-FORMING CORRUPTED METAL TUBES
EP00402299A EP1181994B1 (en) 2000-08-17 2000-08-17 Device for the production of annularly corrugated tubes
AU55890/01A AU778357B2 (en) 2000-08-17 2001-07-20 Device for the manufacture of annular corrugated metal tubes
CN01125514.5A CN1222376C (en) 2000-08-17 2001-08-07 Equipment for making ring waveform metal pipe
BR0103426-0A BR0103426A (en) 2000-08-17 2001-08-15 Device for the production of ring-shaped corrugated metal tubes
CA2355172A CA2355172C (en) 2000-08-17 2001-08-15 Apparatus for producing annularly corrugated metal tubes
US09/930,309 US6550300B2 (en) 2000-08-17 2001-08-16 Apparatus for producing annularly corrugated metal tubes
JP2001247026A JP2002102941A (en) 2000-08-17 2001-08-16 Equipment for manufacturing circular corrugated metallic tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00402299A EP1181994B1 (en) 2000-08-17 2000-08-17 Device for the production of annularly corrugated tubes

Publications (2)

Publication Number Publication Date
EP1181994A1 EP1181994A1 (en) 2002-02-27
EP1181994B1 true EP1181994B1 (en) 2003-08-27

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Application Number Title Priority Date Filing Date
EP00402299A Expired - Lifetime EP1181994B1 (en) 2000-08-17 2000-08-17 Device for the production of annularly corrugated tubes

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US (1) US6550300B2 (en)
EP (1) EP1181994B1 (en)
JP (1) JP2002102941A (en)
CN (1) CN1222376C (en)
AT (1) ATE248037T1 (en)
AU (1) AU778357B2 (en)
BR (1) BR0103426A (en)
CA (1) CA2355172C (en)
DE (1) DE50003453D1 (en)
DK (1) DK1181994T3 (en)
ES (1) ES2200800T3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10146807A1 (en) * 2001-09-22 2003-04-10 Nexans Process for the production of longitudinally welded helically corrugated metal pipes
CA2575279A1 (en) * 2006-01-30 2007-07-30 Link-Pipe Inc Apparatus and method for sleeve or sheet corrugation
BRPI0818695A2 (en) * 2007-10-01 2015-09-01 Inventio Ag Deep inlay device
CN101513655B (en) * 2008-02-22 2011-02-09 上海迈信威机电科技有限公司 Lifting device for embossing head of embossing calendar
DK2243567T3 (en) * 2009-04-21 2011-06-27 Nexans Device for making tubes that are corrugated across the longitudinal direction
US8333099B2 (en) * 2009-12-21 2012-12-18 Han-Ching Huang Method for making a tube of a telescopic device
CN102248051B (en) * 2010-08-02 2013-04-03 江苏俊知技术有限公司 Device for rolling outer conductor of corrugated tube
CN101961829B (en) * 2010-10-10 2012-05-16 浙江明泰标准件有限公司 Bolt molding process requiring chamfering and milling multiple grooves
CN102274902B (en) * 2011-06-17 2013-07-17 秦皇岛福格科技有限公司 Rotating tray mechanism of corrugated pipe forming machine
EP2752256B1 (en) * 2013-01-07 2016-06-15 Nexans Device for corrugating a pipe
CN111438222B (en) * 2020-03-19 2021-08-20 玉环明智科技有限公司 Discontinuous spiral pipe automatic molding frock
CN112238172B (en) * 2020-09-28 2022-12-23 广州润球通讯科技有限公司 Steel belt embossing device for producing optical cable sheath
CN116871375B (en) * 2023-09-06 2023-11-28 杭州万全金属软管有限公司 Stainless steel corrugated pipe machining device

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DE458947C (en) * 1928-04-23 Friedrich Wempe Process for the production of corrugated tubes for heat exchange equipment
DE2106177A1 (en) * 1970-05-01 1971-11-18 Northern Electric Co Groove embossing device for pipes
GB1326320A (en) * 1971-05-10 1973-08-08 Felten & Guilleaume Kabelwerk Apparatus for corrugating tubes
US3780556A (en) * 1971-09-27 1973-12-25 Andrew Corp Tube corrugating apparatus and method
DE4137275A1 (en) * 1991-11-13 1993-05-19 Kabelmetal Electro Gmbh METHOD FOR THE CONTINUOUS PRODUCTION OF SCREW LINE OR RING SHAPED METAL PIPES
DE19710071A1 (en) * 1997-03-12 1998-09-24 Alsthom Cge Alcatel Device for ring waves of pipes

Also Published As

Publication number Publication date
BR0103426A (en) 2002-03-26
CA2355172C (en) 2010-04-27
DK1181994T3 (en) 2003-12-22
DE50003453D1 (en) 2003-10-02
JP2002102941A (en) 2002-04-09
US6550300B2 (en) 2003-04-22
ATE248037T1 (en) 2003-09-15
US20020029598A1 (en) 2002-03-14
CA2355172A1 (en) 2002-02-17
CN1222376C (en) 2005-10-12
AU5589001A (en) 2002-02-21
AU778357B2 (en) 2004-12-02
ES2200800T3 (en) 2004-03-16
CN1367052A (en) 2002-09-04
EP1181994A1 (en) 2002-02-27

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