EP1526929B1 - Extruder, in particular for producing curved extrusion products - Google Patents

Extruder, in particular for producing curved extrusion products Download PDF

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Publication number
EP1526929B1
EP1526929B1 EP03747799A EP03747799A EP1526929B1 EP 1526929 B1 EP1526929 B1 EP 1526929B1 EP 03747799 A EP03747799 A EP 03747799A EP 03747799 A EP03747799 A EP 03747799A EP 1526929 B1 EP1526929 B1 EP 1526929B1
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EP
European Patent Office
Prior art keywords
tool
pressure plate
extrusion press
extrusion
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.)
Expired - Lifetime
Application number
EP03747799A
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German (de)
French (fr)
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EP1526929A1 (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

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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
    • 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

  • the invention relates to an extruder, in particular for the production of curved extrusion products, wherein the molded product in a arranged on a counter-spar of the extruder tool, which usually comprises a pressure piece and a female die holder, molded and then bent or bent by the action of external forces ,
  • the pressure medium may be a pressure roller, a lateral force-generating sliding surface or a roller cage.
  • the reaction distance must be maintained so that the extruded product is simultaneously or immediately after the shaping extrusion such that the workpieces formed in the extrusion die are not parallel to each other out of the die, but at an angle to each other.
  • this design it is not possible to produce profiles with small bending radii.
  • the invention is therefore an object of the invention to provide a generic extruder, which makes it possible by simple means to produce pressed products with a wide range of bending radii.
  • An embodiment of the invention provides that the tool is provided in an enlarged, extending in the pressing direction over the entire length of the remindholms pressure plate.
  • the oversizing a possible weakening of the printing plate is sufficiently compensated due to the required for integrated recording of the tool recess.
  • an increasingly wider outlet funnel is formed in the tool, starting from the die and continuing in the pressure plate in the pressing direction to the outside. This not only creates a free space for bending or bending of the strand, but also favors the formation of smallest radii, because the deflection and thus curvature of the strand can already be initiated in the outlet funnel by means of an example also arranged in the counter-pressure applying means.
  • a plunger 3 is arranged in a cylinder spar 2, with which a ram 4 in the pressing direction 5 (see, the arrow) is acted upon.
  • This pressed a previously loaded in a by means of displacement cylinders (not shown) on slide guides 6 reciprocating transducers 7, not shown block.
  • the figure shows the displaced in the operating position in front of a counter-8 transducers 7.
  • the cylinder spar 2 and the counter-8 can, for example via pressure supports and tension plates to form a press frame, compact press frame are positively connected to each other.
  • the counter-member 8 is here provided with an enlarged pressure plate 9, which is part of the Gegenholms.
  • a recess 10 is formed, which receives the tool 11, which receives a pressure piece 12 and a screwed thereto, a die 13-bearing die holder 14 here.
  • the tool 11 is thus an integral part of the Schmidtholms 8, with which the transducer 7 facing end it terminates flush as far as possible.
  • the tool 11 and the pressure plate 9 are formed starting from the inside of the die 13 with an outwardly expanding in the pressing direction 5 outlet funnel 15.
  • the pressure plate 9 are parallel to the outlet funnel 15 cylinder 16, which are freely accessible from the outside of the counter strut 8 forth and coupled via their attached to their piston rods 17 couplings via snap-in connections with the tool 11 and the die holder 14 can be coupled.
  • the tool thus by acting on the cylinder 16 from the mounting position in the recess 10 of the enlarged pressure plate 9 are moved axially forward in a freely accessible position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Pens And Brushes (AREA)
  • Forging (AREA)

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

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 extruder, in particular for the production of curved extrusion products, wherein the molded product in a arranged on a counter-spar of the extruder tool, which usually comprises a pressure piece and a female die holder, molded and then 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 are predominantly made of aluminum and magnesium alloys, which are required for a wide variety of industrial sectors, it has become known from EP 0 706 843 B1 for extruding hollow products with large differences in wall thickness, at such a specific distance from Matrizenaustrittsende or counter-spar with a pressure medium exert a force that results in a reaction to the profile formed in the extrusion die. The pressure medium may be a pressure roller, a lateral force-generating sliding surface or a roller cage. However, whichever pressure applying means is used, the reaction distance must be maintained so that the extruded product is simultaneously or immediately after the shaping extrusion such that the workpieces formed in the extrusion die are not parallel to each other out of the die, but at an angle to each other. However, with this design, it is not possible to produce 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 an object of the invention to provide a generic extruder, which makes it possible by 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-spar. In that, deviating from all known Executions of extruders, in which the tool or die precedes the counter-member, the tool according to the invention at most slightly protrudes from the counter-spar, but largely flush with the punch or transducer facing end side, it can be achieved that the strand exit so close as possible is shifted to the outside. This results in an early influence on the strand to be bent, so that small bending radii can be formed, because the bending to be acted upon free end of the strand can be exposed after a short exit length of the bending action. Depending on the direction of the force of the pressure applying agent here 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, extending in the pressing direction over the entire length of the Rückholms pressure plate. Hereby can be achieved that the oversizing a possible weakening of the printing plate is sufficiently compensated due to the required for integrated recording of the tool recess.

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, in the tool, starting from the die and continuing in the pressure plate in the pressing direction to the outside, an increasingly wider outlet funnel is formed. This not only creates a free space for bending or bending of the strand, but also favors the formation of smallest radii, because the deflection and thus curvature of the strand can already be initiated in the outlet funnel by means of an example also arranged in the counter-pressure applying means.

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.If according to another proposal of the invention in the pressure plate parallel to the outlet funnel extending cylinders are arranged and coupled to the tool, the entire tool for the purpose of maintenance or change can move axially into a freely accessible position from the counter-spar.

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.Further features and details of the invention will become apparent 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 extrusion press 1 shown in the drawing, carried out in horizontal construction, a plunger 3 is arranged in a cylinder spar 2, with which a ram 4 in the pressing direction 5 (see, the arrow) is acted upon. This pressed a previously loaded in a by means of displacement cylinders (not shown) on slide guides 6 reciprocating transducers 7, not shown block. The figure shows the displaced in the operating position in front of a counter-8 transducers 7. The cylinder spar 2 and the counter-8 can, for example via pressure supports and tension plates to form a press frame, compact press frame are positively connected to each other.

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-member 8 is here provided with an enlarged pressure plate 9, which is part of the Gegenholms. In the pressure plate, a recess 10 is formed, which receives the tool 11, which receives a pressure piece 12 and a screwed thereto, a die 13-bearing die holder 14 here. The tool 11 is thus an integral part of the Gegenholms 8, with which the transducer 7 facing end it terminates flush as far as possible.

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 outwardly expanding in the pressing direction 5 outlet funnel 15. In the pressure plate 9 are parallel to the outlet funnel 15 cylinder 16, which are freely accessible from the outside of the counter strut 8 forth and coupled via their attached to their piston rods 17 couplings via snap-in connections with the tool 11 and the die holder 14 can be coupled. In case of maintenance or exchange purposes or the like of the counter-spar 8 in the - notwithstanding the drawing - moved away rearward retracted position pickup 7, the tool thus by acting on the cylinder 16 from the mounting position in the recess 10 of the enlarged pressure plate 9 are moved axially forward in 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, this can be applied early by a suitable pressure application means, illustrated by a force arrow F, and thus curved with a small radius. Because of the completely displaced in the counter-8 tool 8 this is as far as possible close to the outlet of the strand 18 from the counter-spar 8, whereby the leading strand end is extremely short and therefore early on the bending load is accessible. This can be done even earlier with an already arranged in the counter-8 Druckbeaufschlagungsmittel possibly earlier, namely, immediately after exiting the tool 11 in the outlet hopper 15. If on the same extruder 1 also grade extruded products are to be produced, the pressing operation without actuation of the pressurizing F instead of.

Claims (4)

  1. An extrusion press for producing curved extrusion press products including a tool that is arranged on a die cap of the extrusion press for forming the extruded product, which tool generally includes a pressure element and a cavity block holder that accommodates the cavity block, and means for subsequent curving and/or bending the extruded product,
    characterised in that
    the entire tool (11) is disposed in the die cap (8).
  2. The extrusion press in accordance with claim 1,
    characterised in that
    the tool (11) is provided in an enlarged pressure plate (9) that extends over the entire length of the die cap (8) in the direction or extrusion (5).
  3. The extrusion press in accordance with either of claims 1 or 2,
    characterised in that
    an outlet manifold (15) is conformed in the tool (11) and is flared progressively, starting from the cavity block (13) and continuing outward in the direction of extrusion (5) in the pressure plate (9).
  4. The extrusion press in accordance with any of claims 1 to 3,
    characterised in that
    cylinders (16) running parallel to the outlet manifold (15) are disposed in the pressure plate (9) and are coupled with 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
DE10236299 2002-08-08
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
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 EP1526929A1 (en) 2005-05-04
EP1526929B1 true EP1526929B1 (en) 2006-10-04

Family

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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
AU2013328912B2 (en) 2012-10-12 2017-10-12 Inova Labs, Inc. Method and systems for the delivery of oxygen enriched gas
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
DE50102182D1 (en) * 2000-02-10 2004-06-09 Wkw Erbsloeh Automotive Gmbh METHOD AND DEVICE FOR PRODUCING CURVED EXTRUSION 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

Also Published As

Publication number Publication date
WO2004020121A1 (en) 2004-03-11
US7219523B2 (en) 2007-05-22
ES2276093T3 (en) 2007-06-16
EP1526929A1 (en) 2005-05-04
DE10236299A1 (en) 2004-02-19
DE50305277D1 (en) 2006-11-16
ATE341407T1 (en) 2006-10-15
JP2005534504A (en) 2005-11-17
US20060174675A1 (en) 2006-08-10
JP4651005B2 (en) 2011-03-16

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