EP0230221A2 - Preparation bench for a tube-drawing installation - Google Patents

Preparation bench for a tube-drawing installation Download PDF

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Publication number
EP0230221A2
EP0230221A2 EP87100036A EP87100036A EP0230221A2 EP 0230221 A2 EP0230221 A2 EP 0230221A2 EP 87100036 A EP87100036 A EP 87100036A EP 87100036 A EP87100036 A EP 87100036A EP 0230221 A2 EP0230221 A2 EP 0230221A2
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EP
European Patent Office
Prior art keywords
tube
receiving
vorbank
plug
axis
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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.)
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EP87100036A
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German (de)
French (fr)
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EP0230221A3 (en
Inventor
Rudolf Bültmann
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Individual
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Individual
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Publication of EP0230221A2 publication Critical patent/EP0230221A2/en
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    • 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
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
    • B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels
    • 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
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/32—Feeding or discharging the material or mandrels
    • 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
    • B21C9/00—Cooling, heating or lubricating drawing material

Definitions

  • the invention relates to a bench for a pipe drawing system with the features according to the preamble of the main claim.
  • a known Vorbank of the same type as the invention (DE-OS 34 17 485) is designed as a drum-like frame rotatable about its longitudinal axis and has two identical loading tubes per drawing die.
  • the other loading pipe When pulling a pipe, if it is taken out of one loading pipe, the other loading pipe is in a standby warehouse above the drawing system and picks up a new pipe during the drawing process. After drawing, this new pipe is brought into the drawing axis by turning the front bench by 180 °. So that the drawbar of this tube can be threaded into the drawing die, it is possible to move the front bench a little in the axial direction.
  • this known front bench not only two receiving tubes are required per drawing die, but also two drawing plugs and plug rods of the same size are required.
  • funnels are required at the front of the receiving tubes, which are intended to catch the new pipes to be drawn.
  • These funnels and the required double number of plugs and plug rods represent a not inconsiderable construction effort. It happens that the associated plugs wear differently, which means that the drawn pipes only have the same dimensions, but practically tolerances. If with new die calibers is pulled, it is necessary to convert the receiving tubes with respect to the funnels, pull plugs and plug rods.
  • the invention has for its object to design a Vorbank of the type in question so that the need for retrofitting the receiving tubes for new die calibers no longer exists with less design effort.
  • the centering cone can be coupled to a lubricant line, so that there is the possibility of introducing the lubricant required for the drawing process into the tube during centering.
  • a Vorbank which according to the further invention has a plurality of receiving tubes one above the other with different dimensions and different plugs and plug rods, is able to be used without pipes for pipes with a large range of diameters.
  • a standby warehouse 4 is located above a pipe drawing system, the drawing die 1 of which is shown, where new pipes 9 are kept ready for the next drawing process.
  • the standby warehouse has transport rollers 6, which have the task of inserting the new tube 9 into a receiving tube of the front bench.
  • the front bench 20 has three receiving tubes (charging tubes), namely a lower receiving tube 20a, a middle receiving tube 20b and an upper receiving tube 20c.
  • Each of these receiving tubes receives a plug rod 24 with a pull plug 23.
  • the stopper rod with stopper is displaceable in the tube by means of a respective push mechanism 25.
  • the three receiving tubes are different in terms of their diameter, namely the lowest receiving tube 20a is the smallest, and the further receiving tubes 20b and 20c above it are somewhat larger.
  • the different diameters of the receiving tubes are the different diameters of the pipes 9 to be drawn, adapted.
  • the respective receiving tubes also have different drawing plugs and plug rods which are adapted to different pipe diameters or different die calibers.
  • the three receiving tubes are located on a lifting table 10 and can be moved overall in the direction of the tube axis.
  • Fig. 1 shows the position of the front bench before loading the central receiving tube 20b.
  • the pull plug 23 is advanced somewhat.
  • the height of the front bench is adjusted by an electronic fine control so that the axis 23a of the drawing plug 23 is identical to the axis 5 of the tube 9 available in the bearing.
  • the transport rollers 6 are set in motion from this position, so that this is new pulling tube 9 is pushed over the pulling plug 23 and further fully into the receiving tube 20, with a slight height correction being carried out beforehand on the lifting table so that the tube 9 also enters the free cross section of the receiving tube 20b unhindered.
  • Fig. 2 shows the position of the received tube 9 in the receiving tube 20b. Essentially, only the so-called drawbar 9a projects.
  • the entire front bench is retracted from the position shown in FIG. 2 in the direction of the arrow, then it moves down into the position shown in FIG. 3.
  • the axis of the pipe 9 to be drawn is in turn brought into an identical position by an automatic electronic control the pull axis 3 set so that by ancestors of Vorbank the drawing bar 9a in the drawing die 1 reaches the position shown in dashed lines. In this position, the clamping jaws 2 of the drawing carriage can grip the drawing bar and the drawing process can begin after the drawing plug 23 has advanced a little further into the drawing die.
  • a new tube 9 can be brought into the standby warehouse and centered in that the front tube end strikes a forward centering cone 7, is centered thereby and is held in the centered position by the transport rollers 6.
  • the centering process with the aid of the cone 7 can also be combined with an internal lubrication of the pipe to be drawn, in that a lubricant is introduced centrally into the pipe 9 via the line 8.
  • the front bench moves back up to the position shown in FIG. 1, where one of the receiving tubes can be loaded again in the manner described.
  • the lifting table is moved from the standby area to the drawing die area very quickly with the help of pre-loaded pneumatic media in a fraction of a second.
  • the height adjustment of the axes is done automatically with the help of electronic scanning and control elements.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)

Abstract

The preparation bench is mounted on a lifting table (10) and has a receiving tube for receiving the tube (9) to be drawn from a stand-by store (4), or several receiving tubes one above the other which are designed for different die diameters. Before the loading, the lifting table travels up until the tube to be loaded is approximately on the same axis as a new tube to be drawn in the stand-by store. The drawing plug (23) is at the same time advanced slightly. By means of an electronic precision control system, the axes of the plug on the one hand and of the new tube on the other hand are adjusted to be the same. Owing to the fact that the preparation bench contains several receiving tubes having various dimensions, resetting for other die diameters is unnecessary. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Vorbank für eine Rohrziehanlage mit den Merkmalen nach dem Oberbegriff des Hauptanspruchs.The invention relates to a bench for a pipe drawing system with the features according to the preamble of the main claim.

Eine bekannte Vorbank der gleichen Art wie die Erfindung (DE-OS 34 17 485) ist als ein trommelartiges, um seine Längsachse drehbares Gestell ausgebildet und hat pro Ziehmatrize zwei gleiche Laderohre. Beim Ziehen eines Rohres, wenn dieses aus dem einen Laderohr herausgeholt wird, steht das andere Laderohr in einem Bereitschaftslager über der Ziehanlage und nimmt während des Ziehvorgangs ein neues Rohr auf. Nach dem Ziehen wird dieses neue Rohr durch Drehen der Vorbank um 180° in die Ziehachse gebracht. Damit man die Ziehangel dieses Rohres in die Ziehmatrize einfädeln kann, besteht die Möglichkeit, die Vorbank ein Stück in Achsrichtung zu bewegen. Bei dieser bekannten Vorbank werden pro Ziehmatrize nicht nur zwei Aufnahmerohre, sondern auch zwei Ziehstopfen und Stopfenstangen gleicher Größe benötigt. Außerdem benötigt man Trichter vorne an den Aufnahmerohren, welche die aufzunehmenden neuzuziehenden Rohre auffangen sollen. Diese Trichter und die benötigte doppelte Anzahl an Ziehstopfen und Stopfenstangen stellt einen nicht unerheblichen Konstruktionsaufwand dar. Es kommt vor, daß die einander zugeordneten Ziehstopfen unterschiedlich abnutzen, was zur Folge hat, daß die gezogenen Rohre nur theoretisch gleiche Abmessungen, praktisch aber Toleranzen aufweisen. Wenn durch neue Matrizenkaliber gezogen wird, ist es erforderlich, die Aufnahmerohre hinsichtlich der Trichter, Ziehstopfen und Stopfenstangen umzurüsten.A known Vorbank of the same type as the invention (DE-OS 34 17 485) is designed as a drum-like frame rotatable about its longitudinal axis and has two identical loading tubes per drawing die. When pulling a pipe, if it is taken out of one loading pipe, the other loading pipe is in a standby warehouse above the drawing system and picks up a new pipe during the drawing process. After drawing, this new pipe is brought into the drawing axis by turning the front bench by 180 °. So that the drawbar of this tube can be threaded into the drawing die, it is possible to move the front bench a little in the axial direction. In this known front bench, not only two receiving tubes are required per drawing die, but also two drawing plugs and plug rods of the same size are required. In addition, funnels are required at the front of the receiving tubes, which are intended to catch the new pipes to be drawn. These funnels and the required double number of plugs and plug rods represent a not inconsiderable construction effort. It happens that the associated plugs wear differently, which means that the drawn pipes only have the same dimensions, but practically tolerances. If with new die calibers is pulled, it is necessary to convert the receiving tubes with respect to the funnels, pull plugs and plug rods.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorbank der in Frage stehenden Art so auszubilden, daß bei geringerem Konstruktionsaufwand die Notwendigkeit einer Umrüstung der Aufnahmerohre für neue Matrizenkaliber nicht mehr besteht.The invention has for its object to design a Vorbank of the type in question so that the need for retrofitting the receiving tubes for new die calibers no longer exists with less design effort.

Diese Aufgabe wird durch eine Vorbank mit den Merkmalen nach dem Hauptanspruch gelöst. Die Unteransprüche haben bevorzugte Ausgestaltungen der Erfindung zum Inhalt.This task is solved by a Vorbank with the features according to the main claim. The subclaims relate to preferred embodiments of the invention.

Bei einer solchen Vorbank ist für jedes Matrizenkaliber nur ein Aufnahmerohr, ein Ziehstopfen und eine Stopfenstange erforderlich. Man benötigt auch keine Trichter für das Auffangen das neu zu ziehenden Rohres im Aufnahmerohr, da durch eine elektronische Feineinstellung vor bzw. während des Einfahrens eine gezielte Achseinstellung durchgeführt wird. Obwohl während des Ziehvorgangs nicht geladen werden kann, ergibt sich im wesentlichen kein Zeitverlust, denn der Ladevorgang und das Herunterfahren der Vorbank in den Bereich der Ziehmatrize erfolgen blitzschnell in Bruchteilen einer Sekunde mit Hilfe vorgespannter pneumatischer Medien. Die Aufnahmerohre legen dabei durch das Heben und Senken des Hubtisches den kürzesten Weg zurück.With such a bench, only one receiving tube, one pulling plug and one plug rod are required for each die caliber. There is also no need for a funnel to catch the new pipe to be drawn in the receiving pipe, since a targeted axis adjustment is carried out by means of an electronic fine adjustment before or during the retraction. Although it is not possible to load during the pulling process, there is essentially no loss of time, because the loading process and the lowering of the front bench into the area of the pulling die are carried out at lightning speed in fractions of a second with the aid of pre-loaded pneumatic media. The lifting tubes cover the shortest route by lifting and lowering the lifting table.

Wenngleich während des Ziehvorgangs noch kein Ladevorgang durchgeführt werden kann, kann dieser doch durch eine Zentrierung mit Hilfe eines Zentrierkegels gemäß der weiteren Erfindung vorbereitet werden. In diesem Zusammenhang kann der Zentrierkegel mit einer Schmiermittelleitung gekoppelt werden, so daß die Möglichkeit besteht, das für den Ziehvorgang erforderliche Schmiermittel in das Rohr bei der zentrierung einzuführen.Although no loading process can be carried out during the pulling process, this can be done by centering with the help of a centering cone according to the another invention to be prepared. In this connection, the centering cone can be coupled to a lubricant line, so that there is the possibility of introducing the lubricant required for the drawing process into the tube during centering.

Dadurch, daß die Aufnahmerohre keine Auffangtrichter benötigen, entfällt auch das Umrüsten der Aufnahmerohre auf neue Trichter, die den verschiedenen Durchmessern des Ziehgutes angepaßt sind. Eine Vorbank, die gemäß der weiteren Erfindung mehrere Aufnahmerohre übereinander mit unterschiedlichen Abmessungen und unterschiedlichen Stopfen und Stopfenstangen aufweist, ist in der Lage, ohne Umrüstung für Rohre mit einem großen Unterschiedsbereich der Durchmesser eingesetzt zu werden.Because the receiving tubes do not require a collecting funnel, there is also no need to convert the receiving tubes to new funnels that are adapted to the different diameters of the drawn material. A Vorbank, which according to the further invention has a plurality of receiving tubes one above the other with different dimensions and different plugs and plug rods, is able to be used without pipes for pipes with a large range of diameters.

Im folgenden wird ein Ausführungsbeispiel der Erfindung beschrieben unter Bezugnahme auf die beiliegenden Zeichnungen.

  • Fig. 1 stellt im Prinzip eine Seitenansicht einer Vorbank nach der Erfindung dar und zwar in der Stellung vor dem Laden;
  • Fig. 2 ist die entsprechende Stellung nach dem Laden;
  • Fig. 3 zeigt eine Ansicht der Vorbank in der Stellung vor dem Ziehen.
In the following an embodiment of the invention will be described with reference to the accompanying drawings.
  • Fig. 1 shows in principle a side view of a front bench according to the invention, namely in the position before loading;
  • Fig. 2 is the corresponding position after loading;
  • Fig. 3 shows a view of the front bench in the position before pulling.

Über einer Rohrziehanlage, deren Ziehmatrize 1 dargestellt ist, befindet sich ein Bereitschaftslager 4, wo jeweils neue Rohre 9 für den nächsten Ziehvorgang bereitgehalten werden. Das Bereitschaftslager hat Transportrollen 6, welche die Aufgabe haben, das jeweils neue Rohr 9 in ein Aufnahmerohr der Vorbank einzuführen.A standby warehouse 4 is located above a pipe drawing system, the drawing die 1 of which is shown, where new pipes 9 are kept ready for the next drawing process. The standby warehouse has transport rollers 6, which have the task of inserting the new tube 9 into a receiving tube of the front bench.

Bei dem Ausführungsbeispiel hat die Vorbank 20 drei Aufnahmerohre (Laderohre) und zwar ein unteres Aufnahmerohr 20a, ein mittleres Aufnahmerohr 20b und ein oberes Aufnahmerohr 20c. Jedes dieser Aufnahmerohre nimmt eine Stopfenstange 24 mit einem Ziehstopfen 23 auf. Die Stopfenstange mit Stopfen ist mittels eines jeweiligen Schubmechanismus 25 im Rohr verschiebbar. Bei dem Ausführungsbeispiel sind die drei Aufnahmerohre hinsichtlich ihres Durchmessers unterschiedlich und zwar ist das unterste Aufnahmerohr 20a das kleinste, die weiteren Aufnahmerohre 20b und 20c darüber etwas größer. Die unterschiedlichen Durchmesser der Aufnahmerohre sind den unterschiedlichen Durchmessern der aufzunehmenden, zu ziehenden Rohre 9 angepaßt. Die jeweiligen Aufnahmerohre haben auch unterschiedliche Ziehstopfen und Stopfenstangen, die verschiedenen Rohrdurchmessern bzw. verschiedenen Matrizenkalibern angepaßt sind.In the exemplary embodiment, the front bench 20 has three receiving tubes (charging tubes), namely a lower receiving tube 20a, a middle receiving tube 20b and an upper receiving tube 20c. Each of these receiving tubes receives a plug rod 24 with a pull plug 23. The stopper rod with stopper is displaceable in the tube by means of a respective push mechanism 25. In the exemplary embodiment, the three receiving tubes are different in terms of their diameter, namely the lowest receiving tube 20a is the smallest, and the further receiving tubes 20b and 20c above it are somewhat larger. The different diameters of the receiving tubes are the different diameters of the pipes 9 to be drawn, adapted. The respective receiving tubes also have different drawing plugs and plug rods which are adapted to different pipe diameters or different die calibers.

Die drei Aufnahmerohre befinden sich auf einem Hubtisch 10 und sind insgesamt in Richtung der Rohrachse verschiebbar.The three receiving tubes are located on a lifting table 10 and can be moved overall in the direction of the tube axis.

Fig. 1 zeigt die Stellung der Vorbank vor dem Laden des mittleren Aufnahmerohres 20b. Dabei ist der Ziehstopfen 23 etwas vorgeschoben. Die Vorbank ist der Höhe nach durch eine eletronische Feinsteuerung so eingestellt, daß die Achse 23a des Ziehstopfens 23 identisch ist mit der Achse 5 des im Lager bereitstehenden Rohres 9. Aus dieser Stellung heraus werden die Transportrollen 6 in Gang gesetzt, so daß das neu zu ziehende Rohr 9 über den Ziehstopfen 23 geschoben wird und weiter vollständig in das Aufnahmerohr 20 hinein, wobei vorher noch eine geringfügige Höhenkorrektur am Hubtisch vorgenommen wird, damit das Rohr 9 auch ungehindert in den freien Querschnitt des Aufnahmerohres 20b eingeht.Fig. 1 shows the position of the front bench before loading the central receiving tube 20b. The pull plug 23 is advanced somewhat. The height of the front bench is adjusted by an electronic fine control so that the axis 23a of the drawing plug 23 is identical to the axis 5 of the tube 9 available in the bearing. The transport rollers 6 are set in motion from this position, so that this is new pulling tube 9 is pushed over the pulling plug 23 and further fully into the receiving tube 20, with a slight height correction being carried out beforehand on the lifting table so that the tube 9 also enters the free cross section of the receiving tube 20b unhindered.

Fig. 2 zeigt die Stellung des aufgenommenen Rohres 9 im Aufnahmerohr 20b. Dabei steht im wesentlichen nur die sogenannte Ziehangel 9a vor. Aus der Stellung nach Fig. 2 wird die gesamte Vorbank in Richtung des Pfeiles zurückgefahren, dann fährt sie nach unten in die Stellung nach Fig. 3. Durch eine automatische, elektronische Steuerung wird wiederum die Achse des zu ziehenden Rohres 9 in eine identische Lage mit der Ziehachse 3 eingestellt, so daß durch Vorfahren der Vorbank die Ziehangel 9a in die Ziehmatrize 1 gelangt bis in die gestrichelt bezeichnete Stellung. In dieser Stellung können die Klemmbacken 2 des Ziehwagens die Ziehangel erfassen und der Ziehvorgang kann beginnen, nachdem der Ziehstopfen 23 noch ein Stück weiter vorgefahren ist bis in die Ziehmatrize.Fig. 2 shows the position of the received tube 9 in the receiving tube 20b. Essentially, only the so-called drawbar 9a projects. The entire front bench is retracted from the position shown in FIG. 2 in the direction of the arrow, then it moves down into the position shown in FIG. 3. The axis of the pipe 9 to be drawn is in turn brought into an identical position by an automatic electronic control the pull axis 3 set so that by ancestors of Vorbank the drawing bar 9a in the drawing die 1 reaches the position shown in dashed lines. In this position, the clamping jaws 2 of the drawing carriage can grip the drawing bar and the drawing process can begin after the drawing plug 23 has advanced a little further into the drawing die.

Noch während des Ziehvorgangs kann ein neues Rohr 9 in das Bereitschaftslager gebracht und dadurch zentriert werden, daß das vordere Rohrende an einem vorgefahrenen Zentrierkegel 7 anschlägt, dadurch zentriert wird und in der zentrierten Stellung durch die Transportrollen 6 festgehalten wird. Den Zentriervorgang mit Hilfe des Kegels 7 kann man auch mit einer Innenschmierung des zu ziehenden Rohres verbinden, indem ein Schmiermittel über die Leitung 8 zentrisch in das Rohr 9 eingeführt wird.Even during the drawing process, a new tube 9 can be brought into the standby warehouse and centered in that the front tube end strikes a forward centering cone 7, is centered thereby and is held in the centered position by the transport rollers 6. The centering process with the aid of the cone 7 can also be combined with an internal lubrication of the pipe to be drawn, in that a lubricant is introduced centrally into the pipe 9 via the line 8.

Nach Beendigung der Zentrierung fährt die Vorbank wieder nach oben in die Stellung nach Fig. 1, wo erneut eines der Aufnahmerohre in der beschriebenen Weise beladen werden kann.After the centering has been completed, the front bench moves back up to the position shown in FIG. 1, where one of the receiving tubes can be loaded again in the manner described.

Das Verfahren des Hubtisches aus dem Bereich des Bereitschaftslagers in den Bereich der Ziehmatrize erfolgt sehr schnell mit Hilfe vorgespannter pneumatischer Medien in Bruchteilen einer Sekunde. Die höhenmäßige Feineinstellung der Achsen erfolgt automatisch mit Hilfe elektronischer Abtast- und Steuerungselemente.The lifting table is moved from the standby area to the drawing die area very quickly with the help of pre-loaded pneumatic media in a fraction of a second. The height adjustment of the axes is done automatically with the help of electronic scanning and control elements.

Claims (4)

1. Vorbank für eine Rohrziehanlage mit folgenden Merkmalen:
- sie hat mindestens ein Aufnahmerohr zur Aufnahme eines zu ziehenden Rohres, mit einem Ziehstopfen an einer Stopfenstange, welches wahlweise in die Achse der Ziehmatrize oder in die Achse eines über der Ziehanlage stehenden Bereitschaftslagers einstellbar ist;
- die Vorbank ist zum Einfädeln der Ziehangel in Ziehrichtung verschiebbar;
gekennzeichnet durch folgende weitere Merkmale:
- das Aufnahmerohr (20a) ist auf einem Hubtisch (10) angebracht, der mit einem sehr schnell arbeitenden Hubmechanismus ausgerüstet ist;
- der Hubmechanismus ist an elektronische Steuerelemente für eine achsgleiche Einfädelung beim Laden des Aufnahmerohres und beim Einfädeln der Ziehangel (9a) angeschlossen.1. Vorbank for a pipe drawing system with the following features:
- It has at least one receiving tube for receiving a tube to be drawn, with a pulling plug on a stopper rod, which can be adjusted either in the axis of the drawing die or in the axis of a standby warehouse above the drawing system;
- The front bench can be moved in the pulling direction to thread the drawbar;
characterized by the following additional features:
- The receiving tube (20a) is mounted on a lifting table (10) which is equipped with a very fast-acting lifting mechanism;
- The lifting mechanism is connected to electronic control elements for a coaxial threading when loading the pick-up tube and when threading the draw bar (9a). 2. Vorbank nach Anspruch 1, dadurch gekennzeichnet, daß während des Ziehvorganges ein Zentrierkegel (7) achsgleich zur Achse (5) des Bereitschaftslagers (4) einstellbar ist.2. Vorbank according to claim 1, characterized in that a centering cone (7) coaxially with the axis (5) of the standby bearing (4) is adjustable during the drawing process. 3. Vorbank nach Anspruch 2, dadurch gekennzeichnet, daß im Zentrierkegel (7) für die Zuführung eines Schmiermittels in das neue Rohr (9) ein achsialer Kanal mit einer Anschlußleitung (8) ausgebildet ist.3. Vorbank according to claim 2, characterized in that an axial channel with a connecting line (8) is formed in the centering cone (7) for the supply of a lubricant in the new tube (9). 4. Vorbank nach Anspruch 1, dadurch gekennzeichnet, daß auf dem Hubtisch mehrere Aufnahmerohre (20a, 20b, 20c) befestigt sind, deren Ziehstopfen (23) und Stopfenstange jeweils für verschiedene Matrizenkaliber ausgelegt sind.4. Vorbank according to claim 1, characterized in that on the lifting table a plurality of receiving tubes (20a, 20b, 20c) are attached, the plugs (23) and plug rod are each designed for different die calibers.
EP87100036A 1986-01-16 1987-01-03 Preparation bench for a tube-drawing installation Withdrawn EP0230221A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863601087 DE3601087A1 (en) 1986-01-16 1986-01-16 BENCH FOR A PIPE DRAWING SYSTEM
DE3601087 1986-01-16

Publications (2)

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EP0230221A2 true EP0230221A2 (en) 1987-07-29
EP0230221A3 EP0230221A3 (en) 1989-04-12

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EP87100036A Withdrawn EP0230221A3 (en) 1986-01-16 1987-01-03 Preparation bench for a tube-drawing installation

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DE (1) DE3601087A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114700384A (en) * 2022-03-21 2022-07-05 浙江义腾特种钢管有限公司 Automatic seamless steel pipe drawbench of unloading
CN117664730A (en) * 2023-12-12 2024-03-08 青岛中科鲁控燃机控制系统工程有限公司 Testing arrangement based on decentralized control system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2607474A (en) * 1946-04-15 1952-08-19 Aetna Standard Eng Co Drawbench
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CN114700384B (en) * 2022-03-21 2023-12-22 浙江义腾特种钢管有限公司 Automatic seamless steel tube drawing machine of unloading
CN117664730A (en) * 2023-12-12 2024-03-08 青岛中科鲁控燃机控制系统工程有限公司 Testing arrangement based on decentralized control system
CN117664730B (en) * 2023-12-12 2024-05-17 青岛中科鲁控燃机控制系统工程有限公司 Testing arrangement based on decentralized control system

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DE3601087C2 (en) 1987-12-03
EP0230221A3 (en) 1989-04-12

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