EP1526929A1 - Extruder, in particular for producing curved extrusion products - Google Patents

Extruder, in particular for producing curved extrusion products

Info

Publication number
EP1526929A1
EP1526929A1 EP03747799A EP03747799A EP1526929A1 EP 1526929 A1 EP1526929 A1 EP 1526929A1 EP 03747799 A EP03747799 A EP 03747799A EP 03747799 A EP03747799 A EP 03747799A EP 1526929 A1 EP1526929 A1 EP 1526929A1
Authority
EP
European Patent Office
Prior art keywords
tool
pressure plate
die
extrusion press
counter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03747799A
Other languages
German (de)
French (fr)
Other versions
EP1526929B1 (en
Inventor
Uwe Muschalik
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.)
SMS Group GmbH
Original Assignee
SMS Eumuco GmbH
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 SMS Eumuco GmbH filed Critical SMS Eumuco GmbH
Publication of EP1526929A1 publication Critical patent/EP1526929A1/en
Application granted granted Critical
Publication of EP1526929B1 publication Critical patent/EP1526929B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • B21C23/12—Extruding bent tubes or rods

Definitions

  • Extrusion press in particular for producing curved extrusion products
  • the invention relates to an extrusion press, in particular for producing curved extrusion products, the extrusion product being shaped in a tool arranged on a counter beam of the extrusion press, which usually comprises a pressure piece and a die holder receiving the die, and then being bent or bent by the action of external forces ,
  • the distance intended for the reaction must be maintained so that the extrusion product is influenced simultaneously with or immediately after the shaping extrusion process when bending or bending, in such a way that the workpiece cross sections formed in the extrusion die are not parallel to one another emerge from the die, but stand at an angle to each other.
  • this version it is not possible to create profiles with small bending radii.
  • the invention is therefore based on the object of creating a generic extrusion press which makes it possible with simple means to produce pressed products with a wide range of bending radii.
  • the entire tool is arranged in the counter beam. Because different from all known Designs of extrusion presses in which the tool or the die is located in front of the counter spar, the tool protrudes slightly from the counter spar according to the invention, but largely but flush with the end face facing the press ram or pick-up can be achieved so that the strand exit is so close is shifted to the outside as possible. This is accompanied by an early influence on the strand to be bent, so that small bending radii can be formed, because the free end of the strand to be subjected to bending can be exposed to the bending action after a short exit length. Depending on the direction of force of the pressure application means, radii in different directions are possible.
  • An embodiment of the invention provides that the tool is provided in an enlarged pressure plate which extends in the pressing direction over the entire length of the counter spar. In this way it can be achieved that the overdimensioning, a possible weakening of the pressure plate due to the recess required for the integrated holding of the tool, is sufficiently compensated.
  • an increasingly widening outlet funnel is formed in the tool, proceeding from the die and continuing outward in the pressure plate in the pressing direction. This not only creates a space for the bending or curvature of the strand, but also favors the formation of the smallest radii because the deflection and thus curvature of the strand can already be initiated in the outlet funnel by means of a pressure application means, for example, also arranged in the counter beam.
  • a plunger 3 is arranged in a cylinder spar 2, with which a press ram 4 is applied in the pressing direction 5 (cf. the arrow).
  • the cylinder beam 2 and the counter beam 8 can, for example, be non-positively connected to one another by means of pressure supports and tension slats to form a compact press frame forming a press frame.
  • the counter beam 8 is here provided with an enlarged pressure plate 9, which is part of the counter beam.
  • a recess 10 is formed in the pressure plate, which receives the tool 11, which here receives a pressure piece 12 and a die holder 14 screwed to it and carrying a die 13.
  • the tool 11 is thus an integrated component of the counter spar 8, with the end face of which faces the pickup 7 and is largely flush with it.
  • the tool 11 and the pressure plate 9 are formed, starting from the inside of the die 13, with an outlet funnel 15 which widens outwards in the pressing direction 5.
  • cylinders 16 run, which are freely accessible from the outside of the counter spar 8 and can be coupled to the tool 11 or the die holder 14 via coupling pieces 17 fastened to their piston rods.
  • the tool can thus be acted upon by the cylinders 16 from the installation position in the recess 10 of the enlarged pressure plate 9 can be moved axially forward into a freely accessible position.

Abstract

The product is formed in a two-part tool located on a counter part of an extrusion press, and is then bent by the application of outside forces. The complete tool (11) is located in the counter part (8), esp. in a pressure plate (9) extending in press direction (5) over the complete length of the part. The tool has a discharge funnel (15), and the pressure plate has parallel cylinders (16), which are coupled to the tool.

Description

Strangpresse, insbesondere zum Herstellen von gekrümmten StrangpreßproduktenExtrusion press, in particular for producing curved extrusion products
Die Erfindung betrifft eine Strangpresse, insbesondere zum Herstellen von gekrümmten Strangpreßprodukten, wobei das Preßprodukt in einem an einem Gegenholm der Strangpresse angeordnetem Werkzeug, das üblich ein Druckstück und einen die Matrize aufnehmenden Matrizenhalter umfaßt, geformt und anschließend durch Einwirken äußerer Kräfte gekrümmt bzw. abgebogen wird.The invention relates to an extrusion press, in particular for producing curved extrusion products, the extrusion product being shaped in a tool arranged on a counter beam of the extrusion press, which usually comprises a pressure piece and a die holder receiving the die, and then being bent or bent by the action of external forces ,
Zur Herstellung von in verschiedensten industriellen Bereichen zu unterschiedlichsten Zwecken benötigten gekrümmten bzw. gebogenen Strangpreßprofilen, die vorrangig aus Aluminium und Magnesiumlegierungen bestehen, ist es für das Strangpressen von Hohlprodukten mit großen Wanddickenunterschieden durch die EP 0 706 843 B1 bekanntgeworden, in einem solch bestimmten Abstand vom Matrizenaustrittsende bzw. Gegenholm mit einem Druckmittel eine Kraft auszuüben, daß sich eine Rückwirkung auf das in der Strangpreßmatrize geformte Profil ergibt. Bei dem Druckmittel kann es sich um eine Andrückrolle, eine eine Querkraft erzeugende Gleitfläche oder einen Rollenkäfig handeln. Ganz gleich jedoch, welches Druckaufbringungsmittel eingesetzt wird, so muß der für die Rückwirkung bestimmte Abstand eingehalten werden, damit das Strangpreßprodukt gleichzeitig mit oder unmittelbar nach dem formgebenden Strangpreßvorgang beim Abbiegen bzw.Krümmen derart beeinflußt wird, daß die in der Strangpreßmatrize gebildeten Werkstückquerschnitte nicht parallel zueinander aus der Matrize austreten, sondern in einem Winkel zueinander stehen. Mit dieser Ausführung ist es gleichwohl nicht möglich, Profile mit kleinen Biegeradien zu erzeugen.For the production of curved or bent extruded profiles, which consist primarily of aluminum and magnesium alloys, and which are required in a wide variety of industrial areas for a wide variety of purposes, it has become known for the extrusion of hollow products with large wall thickness differences through EP 0 706 843 B1, at such a specific distance from Use a pressure medium to exert a force on the die exit end or counter beam so that there is a reaction to the profile formed in the extrusion die. The pressure medium can be a pressure roller, a sliding surface that generates a transverse force, or a roller cage. Regardless of which pressure application means is used, the distance intended for the reaction must be maintained so that the extrusion product is influenced simultaneously with or immediately after the shaping extrusion process when bending or bending, in such a way that the workpiece cross sections formed in the extrusion die are not parallel to one another emerge from the die, but stand at an angle to each other. With this version, however, it is not possible to create profiles with small bending radii.
Der Erfindung liegt daher die Aufgabe zugrunde, eine gattungsgemäße Strangpresse zu schaffen, die es mit einfachen Mitteln ermöglicht, Preßprodukte mit einer breiten Palette von Biegeradien herzustellen.The invention is therefore based on the object of creating a generic extrusion press which makes it possible with simple means to produce pressed products with a wide range of bending radii.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das gesamte Werkzeug im Gegenholm angeordnet ist. Dadurch, daß abweichend von allen bekannten Ausführungen von Strangpressen, bei denen das Werkzeug bzw. die Matrize dem Gegenholm vorgelagert ist, das Werkzeug erfindungsgemäß allenfalls geringfügig aus dem Gegenholm vorragt, weitestgehend aber bündig mit dessen dem Preßstempel bzw. Aufnehmer zugewandten Stirnseite verläuft, läßt sich erreichen, daß der Strangaustritt so nahe wie möglich nach außen verlagert wird. Damit einhergehend ergibt sich eine frühzeitige Beeinflussung des abzubiegenden Stranges, so daß kleine Biegeradien ausgeformt werden können, weil das zur Biegung zu beaufschlagende freie Ende des Stranges schon nach kurzer Austrittslänge der Biegeeinwirkung ausgesetzt werden kann. Je nach Kraftrichtung des Druckaufbringungsmittels sind hierbei Radien in verschiedenen Richtungen möglich.This object is achieved in that the entire tool is arranged in the counter beam. Because different from all known Designs of extrusion presses in which the tool or the die is located in front of the counter spar, the tool protrudes slightly from the counter spar according to the invention, but largely but flush with the end face facing the press ram or pick-up can be achieved so that the strand exit is so close is shifted to the outside as possible. This is accompanied by an early influence on the strand to be bent, so that small bending radii can be formed, because the free end of the strand to be subjected to bending can be exposed to the bending action after a short exit length. Depending on the direction of force of the pressure application means, radii in different directions are possible.
Eine Ausgestaltung der Erfindung sieht vor, daß das Werkzeug in einer vergrößerten, in Preßrichtung sich über die vollständige Länge des Gegenholms erstreckenden Druckplatte vorgesehen ist. Hiermit läßt sich erreichen, daß auch die Überdimensionierung eine mögliche Schwächung der Druckplatte aufgrund der zur integrierten Aufnahme des Werkzeugs erforderlichen Ausnehmung hinlänglich kompensiert wird.An embodiment of the invention provides that the tool is provided in an enlarged pressure plate which extends in the pressing direction over the entire length of the counter spar. In this way it can be achieved that the overdimensioning, a possible weakening of the pressure plate due to the recess required for the integrated holding of the tool, is sufficiently compensated.
Nach einer bevorzugten Ausführung der Erfindung ist in dem Werkzeug, ausgehend von der Matrize und sich in der Druckplatte in Preßrichtung nach außen fortsetzend, ein sich zunehmend weitender Austrittstrichter ausgebildet. Hiermit wird nicht nur ein Freiraum zur Biegung bzw. Krümmung des Stranges geschaffen, sondern die Ausbildung kleinster Radien weiter begünstigt, weil die Auslenkung und damit Krümmung des Stranges mittels eines beispielsweise ebenfalls im Gegenholm angeordneten Druckaufbringungsmittels bereits im Auslauftrichter eingeleitet werden kann.According to a preferred embodiment of the invention, an increasingly widening outlet funnel is formed in the tool, proceeding from the die and continuing outward in the pressure plate in the pressing direction. This not only creates a space for the bending or curvature of the strand, but also favors the formation of the smallest radii because the deflection and thus curvature of the strand can already be initiated in the outlet funnel by means of a pressure application means, for example, also arranged in the counter beam.
Wenn gemäß einem weiteren Vorschlag der Erfindung in der Druckplatte parallel zum Austrittstrichter verlaufende Zylinder angeordnet und mit dem Werkzeug gekoppelt sind, läßt sich das gesamte Werkzeug zum Zwecke der Wartung oder des Wechsels axial in eine frei zugängliche Lage aus dem Gegenholm herausbewegen. Weitere Merkmale und Einzelheiten der Erfindung ergeben sich aus den Ansprüchen und der nachfolgenden Beschreibung eines in der einzigen Zeichnungs-Figur dargestellten Ausführungsbeispiels der Erfindung.If, according to a further proposal of the invention, cylinders arranged parallel to the outlet funnel are arranged in the pressure plate and are coupled to the tool, the entire tool can be moved axially out of the counter beam for maintenance or replacement purposes into a freely accessible position. Further features and details of the invention result from the claims and the following description of an embodiment of the invention shown in the single drawing figure.
Bei einer in der Zeichnung dargestellten Strangpresse 1 , ausgeführt in Horizontal- Bauweise, ist in einem Zylinderholm 2 ein Preßkolben 3 angeordnet, mit dem ein Preßstempel 4 in Preßrichtung 5 (vgl. den Pfeil) beaufschlagt wird. Dieser verpreßt einen zuvor in einen mittels Verschiebezylindern (nicht dargestellt) auf Gleitführungen 6 hin und her beweglichen Aufnehmer 7 geladenen, nicht dargestellten Block. Die Figur zeigt den in die Betriebsposition vor einen Gegenholm 8 verfahrenen Aufnehmer 7. Der Zylinderholm 2 und der Gegenholm 8 können beispielsweise über Druckstützen und Zuglamellen zu einem ein Pressengerüst bildenden, kompakten Pressenrahmen kraftschlüssig miteinander verbunden werden.In an extruder 1 shown in the drawing, designed in a horizontal construction, a plunger 3 is arranged in a cylinder spar 2, with which a press ram 4 is applied in the pressing direction 5 (cf. the arrow). This presses a block, not shown, previously loaded into a transducer 7 that is movable back and forth on sliding guides 6 by means of displacement cylinders (not shown). The figure shows the sensor 7 moved into the operating position in front of a counter beam 8. The cylinder beam 2 and the counter beam 8 can, for example, be non-positively connected to one another by means of pressure supports and tension slats to form a compact press frame forming a press frame.
Der Gegenholm 8 ist hier mit einer vergrößerten Druckplatte 9, die Bestandteil des Gegenholms ist, versehen. In der Druckplatte ist eine Ausnehmung 10 ausgebildet, die das Werkzeug 11 aufnimmt, das hier ein Druckstück 12 und einen damit verschraubten, eine Matrize 13 tragenden Matrizenhalter 14 aufnimmt. Das Werkzeug 11 ist somit ein integrierter Bestandteil des Gegenholms 8, mit dessen dem Aufnehmer 7 zugewandten Stirnende es weitestgehend bündig abschließt.The counter beam 8 is here provided with an enlarged pressure plate 9, which is part of the counter beam. A recess 10 is formed in the pressure plate, which receives the tool 11, which here receives a pressure piece 12 and a die holder 14 screwed to it and carrying a die 13. The tool 11 is thus an integrated component of the counter spar 8, with the end face of which faces the pickup 7 and is largely flush with it.
Das Werkzeug 11 und die Druckplatte 9 sind ausgehend von der Innenseite der Matrize 13 mit einem sich in Preßrichtung 5 nach außen weitenden Austrittstrichter 15 ausgebildet. In der Druckplatte 9 verlaufen parallel zum Austrittstrichter 15 Zylinder 16, die von der Außenseite des Gegenholms 8 her ungehindert zugänglich sind und über an ihren Kolbenstangen befestigten Kupplungsstücken 17 über Einrastverbindungen mit dem Werkzeug 11 bzw. dem Matrizenhalter 14 koppelbar sind. Bei zu Wartungs- oder Wechselzwecken oder dergleichen von dem Gegenholm 8 in die - abweichend von der zeichnerischen Darstellung - nach hinten weggefahrene Außerbetriebsposition befindlichen Aufnehmer 7 kann das Werkzeug durch Beaufschlagung der Zylinder 16 somit aus der Einbaulage in der Ausnehmung 10 der vergrößerten Druckplatte 9 in eine frei zugängliche Position axial nach vorne herausbewegt werden.The tool 11 and the pressure plate 9 are formed, starting from the inside of the die 13, with an outlet funnel 15 which widens outwards in the pressing direction 5. In the pressure plate 9, parallel to the outlet funnel 15, cylinders 16 run, which are freely accessible from the outside of the counter spar 8 and can be coupled to the tool 11 or the die holder 14 via coupling pieces 17 fastened to their piston rods. In the case of servicing or changing purposes or the like from the counter beam 8 into the - out of operation position - which is moved away to the rear - deviating from the drawing - the tool can thus be acted upon by the cylinders 16 from the installation position in the recess 10 of the enlarged pressure plate 9 can be moved axially forward into a freely accessible position.
Beim Pressen eines Stranges 18, wie schematisch angedeutet, kann dieser durch ein geeignetes Druckaufbringungsmittel, verdeutlicht durch einen Kraftpfeil F, schon frühzeitig beaufschlagt und damit mit einem kleinen Radius gekrümmt werden. Denn durch das vollständig in den Gegenholm 8 verlagerte Werkzeug 11 liegt dieses weitestmöglich nahe am Austritt des Stranges 18 aus dem Gegenholm 8, wodurch das voreilende Strangende äußerst kurz ist und folglich frühzeitig der Biegebeaufschlagung zugänglich ist. Dies kann mit einem schon gleich im Gegenholm 8 angeordneten Druckbeaufschlagungsmittel gegebenenfalls noch frühzeitiger erfolgen, nämlich schon unmittelbar nach dem Austritt aus dem Werkzeug 11 im Austrittstrichter 15. Wenn auf derselben Strangpresse 1 auch grade Strangpreßprodukte hergestellte werden sollen, findet der Preßbetrieb ohne Betätigung des Druckbeaufschlagungsmittels F statt. When pressing a strand 18, as indicated schematically, it can be acted upon early by a suitable pressure application means, illustrated by a force arrow F, and can thus be curved with a small radius. This is because the tool 11, which has been completely moved into the counter beam 8, is as close as possible to the exit of the strand 18 from the counter beam 8, as a result of which the leading strand end is extremely short and is consequently accessible to the bending action at an early stage. This can possibly be done earlier with a pressurizing means already arranged in the counter beam 8, namely immediately after it exits the tool 11 in the outlet funnel 15. If straight extruded products are also to be produced on the same extrusion press 1, the pressing operation takes place without actuating the pressurizing means F. instead of.

Claims

Patentansprüche: claims:
1. Strangpresse, insbesondere zum Herstellen von gekrümmten Strangpreßprodukten, wobei das Preßprodukt in einem an einem Gegenholm der Strangpresse angeordnetem Werkzeug, das üblich ein Druckstück und einen die Matrize aufnehmenden Matrizenhalter umfaßt, geformt und anschließend durch Einwirken äußerer Kräfte gekrümmt bzw. abgebogen wird, dadurch gekennzeichnet, daß das gesamte Werkzeug (11) im Gegenholm (8) angeordnet ist.1. Extrusion press, in particular for producing curved extruded products, the molded product being shaped in a tool arranged on a counter beam of the extruder, which usually comprises a pressure piece and a die holder receiving the die, and then curved or bent by the action of external forces characterized in that the entire tool (11) is arranged in the counter beam (8).
2. Strangpresse nach Anspruch 1. dadurch gekennzeichnet, daß das Werkzeug (11) in einer vergrößerten, in Preßrichtung (5) sich über die vollständige Länge des Gegenholms (8) erstreckenden Druckplatte (9) vorgesehen ist.2. Extrusion press according to claim 1, characterized in that the tool (11) in an enlarged, in the pressing direction (5) over the entire length of the counter beam (8) extending pressure plate (9) is provided.
3. Strangpresse nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß in dem Werkzeug (11) ausgehend von der Matrize (13) und sich in der Druckplatte (9) in Preßrichtung (5) nach außen fortsetzend, ein sich zunehmend weitender Austrittstrichter (15) ausgebildet ist.3. Extrusion press according to claim 1 or 2, characterized in that in the tool (11) proceeding from the die (13) and in the pressure plate (9) in the pressing direction (5) to the outside, an increasingly widening outlet funnel (15 ) is trained.
4. Strangpresse nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß in der Druckplatte (9) parallel zum Austrittstrichter (15) verlaufende Zylinder (16) angeordnet und mit dem Werkzeug (11) gekoppelt sind. 4. Extrusion press according to one of claims 1 to 3, characterized in that in the pressure plate (9) parallel to the outlet funnel (15) extending cylinders (16) are arranged and coupled to the tool (11).
EP03747799A 2002-08-08 2003-08-05 Extruder, in particular for producing curved extrusion products Expired - Lifetime EP1526929B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10236299A DE10236299A1 (en) 2002-08-08 2002-08-08 Extrusion press esp. for fabrication of curved products has two-part tool located in counter part for simpler bending
DE10236299 2002-08-08
PCT/DE2003/002622 WO2004020121A1 (en) 2002-08-08 2003-08-05 Extruder, in particular for producing curved extrusion products

Publications (2)

Publication Number Publication Date
EP1526929A1 true EP1526929A1 (en) 2005-05-04
EP1526929B1 EP1526929B1 (en) 2006-10-04

Family

ID=30469565

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03747799A Expired - Lifetime EP1526929B1 (en) 2002-08-08 2003-08-05 Extruder, in particular for producing curved extrusion products

Country Status (7)

Country Link
US (1) US7219523B2 (en)
EP (1) EP1526929B1 (en)
JP (1) JP4651005B2 (en)
AT (1) ATE341407T1 (en)
DE (2) DE10236299A1 (en)
ES (1) ES2276093T3 (en)
WO (1) WO2004020121A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1970217A (en) * 2005-11-23 2007-05-30 北京东方逸腾数码医疗设备技术有限公司 Method for preparing C-shaped arm
JP6321663B2 (en) 2012-10-12 2018-05-09 イノヴァ ラボ，インコーポレイテッド Methods and systems for oxygen-enriched gas delivery
DE102017208184B4 (en) 2017-05-16 2019-01-10 Sms Group Gmbh extruder

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2954121A (en) * 1955-03-14 1960-09-27 Donald O Benson Extrusion of spirally formed article
NL9200138A (en) * 1992-01-24 1993-08-16 Reynolds Aluminium Bv EXTRUSION METHOD AND EXTRUSION DEVICE.
DE4428827A1 (en) * 1994-08-17 1996-03-14 Kleiner Matthias Prof Dr Ing H Process for the production of curved workpieces by a combination of extrusion and bending
US6634200B2 (en) * 2000-02-10 2003-10-21 Wkw Erbsloeh Automotive Gmbh Method and device for producing curved extruded profiles
DE10110035B4 (en) * 2001-03-02 2005-05-04 Sms Eumuco Gmbh Outfeed device of an extrusion press
DE10329696B3 (en) * 2003-07-02 2005-03-03 WKW Erbslöh Automotive GmbH Method for producing a plurality of curved extruded profiles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004020121A1 *

Also Published As

Publication number Publication date
EP1526929B1 (en) 2006-10-04
ATE341407T1 (en) 2006-10-15
JP2005534504A (en) 2005-11-17
JP4651005B2 (en) 2011-03-16
WO2004020121A1 (en) 2004-03-11
DE10236299A1 (en) 2004-02-19
DE50305277D1 (en) 2006-11-16
US7219523B2 (en) 2007-05-22
ES2276093T3 (en) 2007-06-16
US20060174675A1 (en) 2006-08-10

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