EP1483066B1 - Method for operating a metal bar press, particularly a horizontal metal bar press - Google Patents
Method for operating a metal bar press, particularly a horizontal metal bar press Download PDFInfo
- Publication number
- EP1483066B1 EP1483066B1 EP03714656A EP03714656A EP1483066B1 EP 1483066 B1 EP1483066 B1 EP 1483066B1 EP 03714656 A EP03714656 A EP 03714656A EP 03714656 A EP03714656 A EP 03714656A EP 1483066 B1 EP1483066 B1 EP 1483066B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- block
- metal bar
- bar press
- operating
- billet
- 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
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 5
- 239000002184 metal Substances 0.000 title claims abstract description 5
- 238000000034 method Methods 0.000 title claims description 8
- 238000001125 extrusion Methods 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 abstract 2
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000001364 causal effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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
- B21C33/00—Feeding extrusion presses with metal to be extruded ; Loading the dummy block
Definitions
- the invention relates to a method for operating a metal extrusion press a block loader for loading a block to be pressed into one Blockaufillon, which is associated with a die, wherein of the block at its the die facing end a head piece is separated.
- Extrusion and tube presses of this type are well known and will either operated as direct or indirect presses, i. with during the pressing process mutually fixed die and transducer or with in the transducer penetrating, attached to the front end of the hollow-bored punch die.
- the particular design depends, for example, on the materials and Weights of the feed. It can be full profiles, rods, ribbons, wires as well as tubes and hollow profiles made of various materials, e.g. Aluminum and Copper or corresponding alloys.
- reshaping the Feed remains over a pressing residue, which is usually in front of the tool or the die, but possibly also behind the die, from the pressed product is separated, for which the sawing and shearing are in use (see DE-PS 553 782).
- the invention has for its object to provide a generic method to avoid the mentioned disadvantages.
- the invention is based on the finding that causal for the Product defects occur during heating of the blocks in the furnace from their Front side or on the front side forming oxide layer, which then in the finished product as disadvantageous inclusion finds again.
- an advantageous mechanical separating cut (shearing, sawing) the loading of the block in the billet and thus before the insertion in the block loader takes place, including only a short header end of the block can be separated, can be the adverse oxide inclusions and to exclude faulty products.
- This release agent can be like for decades to separate the Press rest - the rear end of the block can therefore not be detrimental to the product impact, because the press residue was always always separated - known Facilities are trained.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Extrusion Of Metal (AREA)
- Press Drives And Press Lines (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Betreiben einer Metallstrangpresse mit einem Blocklader zum Laden eines zu verpressenden Blockes in einen Blockaufnehmer, dem eine Matrize zugeordnet ist, wobei von dem Block an seinem der Matrize zugewandten Ende ein Kopfstück abgetrennt wird.The invention relates to a method for operating a metal extrusion press a block loader for loading a block to be pressed into one Blockaufnehmer, which is associated with a die, wherein of the block at its the die facing end a head piece is separated.
Strang- und Rohrpressen dieser Art sind hinlänglich bekannt und werden entweder als Direkt- oder als Indirekt-Pressen betrieben, d.h. mit während des Preßvorgangs zueinander festliegender Matrize und Aufnehmer bzw. mit in den Aufnehmer eindringender, am vorderen Ende des hohlgebohrten Stempels befestigter Matrize. Die jeweilige Ausführung richtet sich beispielsweise nach den Werkstoffen und Gewichten des Einsatzmaterials. Es lassen sich Vollprofile, Stangen, Bänder, Drähte sowie Rohre und Hohlprofile aus verschiedensten Werkstoffen, z.B. Aluminium und Kupfer bzw. entsprechenden Legierungen, herstellen. Beim Umformen des Einsatzmaterials bleibt ein Preßrest über, der normalerweise vor dem Werkzeug bzw. der Matrize, gegebenenfalls aber auch hinter der Matrize, vom Preßerzeugnis getrennt wird, wozu das Sägen und Abscheren gebräuchlich sind (vgl. DE-PS 553 782).Extrusion and tube presses of this type are well known and will either operated as direct or indirect presses, i. with during the pressing process mutually fixed die and transducer or with in the transducer penetrating, attached to the front end of the hollow-bored punch die. The particular design depends, for example, on the materials and Weights of the feed. It can be full profiles, rods, ribbons, wires as well as tubes and hollow profiles made of various materials, e.g. Aluminum and Copper or corresponding alloys. When reshaping the Feed remains over a pressing residue, which is usually in front of the tool or the die, but possibly also behind the die, from the pressed product is separated, for which the sawing and shearing are in use (see DE-PS 553 782).
Aus der DE-A 196 05 885 ist es bei einem eingangs genannten Verfahren bekannt, einen in den Aufnehmer geladenen Block um ein Kragmaß vorspringend vorzuschieben und von dem vorkragenden Abschnitt danach eine Scheibe abzuscheren und zu entfemen. Durch die DE-A 26 35 406 ist es bekannt geworden, die vordere Stirnfläche eines Blockes vor dem Eintritt in den Aufnehmer mechanisch zu reinigen bzw. zu entzundern.From DE-A 196 05 885 it is known in a method mentioned above, a block loaded in the receiver projecting around a Kragmaß advance and from the projecting section thereafter a disc to shear off and remove. From DE-A 26 35 406 it has become known the front face of a block prior to entry into the transducer mechanically to clean or descale.
Zum Einbringen eines Blockes in die Pressenmitte bzw. -achse zum Einschieben in den Blockaufnehmer sind verschiedenste Blocklader bekannt, z.B. durch die EP 0 791 413 B1 und die EP 0 428 989 A2 in Form von Schwenkladern. Ein in einem Ofen auf Preßtemperatur erwärmter, zugeführter Block wird von Ladeschalen übernommen und durch Verschwenken des Blockladers in die Pressenachse in den freien Raum zwischen der Matrize und der Preßscheibe gebracht. Bei der aus der letztgenannten Druckschrift bekannten Strangpresse wird mittels eines Verstellzylinders der Maschinenholm mit dem Blockaufnehmer auf die Matrize zu verschoben, wobei der Blockaufnehmer über den Block gestülpt wird. Entsprechend dem Vorschub des Blockaufnehmers wird der axial bewegliche Schwenkarm auf der Welle verschoben, bis der Block zwischen dem Preßstempel und dem Gegenholm bzw. deren in einem Werkzeughalter befestigten Matrize geklemmt ist. Die Schwenkarme mit den Ladeschalen können dann zu einem neuen Ladevorgang ausgeschwenkt werden.For introducing a block in the press center or axis for insertion into the block picker are known various block loaders, e.g. through the EP 0 791 413 B1 and EP 0 428 989 A2 in the form of pivoting veins. One in a stove heated to pressing temperature, supplied block is of charging shells taken over and by pivoting the block loader in the press axis in the free space between the die and the press wheel. At the time of the latter publication known extruder is by means of a Adjusting cylinder of the machine spar with the billet on the die too shifted, wherein the billet is placed over the block. Corresponding the feed of the block receiver is the axially movable pivot arm on the Shaft moved until the block between the ram and the counter-spar or its die mounted in a tool holder is clamped. The swivel arms with the charging cradles can then become a new one Charging be swung out.
Beim Strangpressen von dünnen rohrförmigen Produkten oder Drähten, die hinter der Strangpresse als Endlosstrang aufgehaspelt werden, hat sich gezeigt, daß an den sich während des Fertigungsprozesses miteinander verschweißenden Stoßstellen von aufeinanderfolgend zugeführten Blöcken Schwachstellen auftreten können, die sich an dem Endlosstrang nicht ohne weiteres auffinden lassen. Erst wenn z.B. dünne rohrförmige Strangpreßprodukte als Druckleitungen eingesetzt werden und Leckagen bzw. sogar Durchbrüche auftreten, läßt sich dieser Produktfehler feststellen.When extruding thin tubular products or wires behind the extruder are wound up as a continuous strand, it has been shown that which are welded together during the manufacturing process Faces of successively fed blocks weak points occur can not be found easily on the endless strand. First if e.g. thin tubular extrusion used as pressure lines and leaks or even breakthroughs occur, this can be Determine product error.
Der Erfindung liegt die Aufgabe zugrunde, ein gattungsgemäßes Verfahren zu schaffen, mit dem sich die genannten Nachteile vermeiden lassen.The invention has for its object to provide a generic method to avoid the mentioned disadvantages.
Diese Aufgabe wird mit einem Verfahren erfindungsgemäß dadurch gelöst, daß von dem Block an seinem der Matrize zugewandten Ende vor dem Einschieben in den Blocklader ein Kopfstück angetrennt, vorzugsweise abgeschert, wird. Alternativ ist das Sägen möglich.This object is achieved by a method according to the invention that of the block at its end facing the die before insertion into the Block loader a head piece angetrennt, preferably sheared, is. Alternatively it is Sawing possible.
Der Erfindung liegt hierbei die Erkenntnis zugrunde, daß ursächlich für die Produktfehler eine sich während der Erwärmung der Blöcke im Ofen von deren Stirnseite her bzw. an der Stirnseite ausbildende Oxidschicht ist, die sich dann in dem fertigen Produkt als nachteiliger Einschluß wiederfindet. Indem erfindungsgemäß ein vorteilhafter mechanischer Trennschnitt (Scheren, Sägen) vor dem Laden des Blockes in den Blockaufnehmer und somit vor dem Einschieben in den Blocklader stattfindet, wozu nur ein kurzes Kopfstückenende von dem Block abgetrennt zu werden braucht, lassen sich die nachteiligen Oxid-Einschlüsse und damit fehlerhafte Produkte ausschließen.The invention is based on the finding that causal for the Product defects occur during heating of the blocks in the furnace from their Front side or on the front side forming oxide layer, which then in the finished product as disadvantageous inclusion finds again. By doing According to the invention, an advantageous mechanical separating cut (shearing, sawing) the loading of the block in the billet and thus before the insertion in the block loader takes place, including only a short header end of the block can be separated, can be the adverse oxide inclusions and to exclude faulty products.
Um diesen Trennschnitt durchzuführen, läßt sich einfachsten falls an der in Preßrichtung vorderen Seite des Blockladers eine Schere oder eine Säge vorsehen. To perform this separation cut, can be easiest if at the in Press direction front side of the block loader provide a pair of scissors or a saw.
Dieses Trennmittel kann wie die seit Jahrzehnten zum Abtrennen des Preßrestes - das rückwärtige Ende des Blockes kann sich daher nicht nachteilig auf das Produkt auswirken, weil der Preßrest ohnehin immer stets abgetrennt wurde - bekannten Einrichtungen ausgebildet werden.This release agent can be like for decades to separate the Press rest - the rear end of the block can therefore not be detrimental to the product impact, because the press residue was always always separated - known Facilities are trained.
Claims (2)
- A method for operating a metal extrusion press with a billet loader for loading a billet to be pressed into a billet pick-up to which a die is assigned, wherein a head piece is separated from the end of the billet facing toward the die,
characterised in that
the head piece is separated before the billet is pushed into the billet loader. - The method as cited in claim 1,
characterised in that
the head piece is sheared off.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10211267 | 2002-03-13 | ||
| DE10211267A DE10211267A1 (en) | 2002-03-13 | 2002-03-13 | Operating a metal strand press having a block feeder comprises cutting off a front piece of the end of the block, which faces the matrix, before the block is inserted into the block feeder |
| PCT/DE2003/000600 WO2003078087A1 (en) | 2002-03-13 | 2003-02-26 | Method for operating a metal bar press, particularly a horizontal metal bar press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1483066A1 EP1483066A1 (en) | 2004-12-08 |
| EP1483066B1 true EP1483066B1 (en) | 2005-11-02 |
Family
ID=27771293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03714656A Expired - Lifetime EP1483066B1 (en) | 2002-03-13 | 2003-02-26 | Method for operating a metal bar press, particularly a horizontal metal bar press |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1483066B1 (en) |
| JP (1) | JP2005527379A (en) |
| CN (1) | CN1642668A (en) |
| AT (1) | ATE308389T1 (en) |
| DE (2) | DE10211267A1 (en) |
| WO (1) | WO2003078087A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE736921C (en) * | 1940-08-03 | 1943-07-01 | Krupp Fried Grusonwerk Ag | Press for sheathing cables, especially aluminum |
| DE2635406C2 (en) * | 1976-08-06 | 1984-10-18 | Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover | Device for turning the metal blocks to be pressed in an extrusion press |
| DE19605885C1 (en) * | 1996-02-05 | 1997-08-21 | Alusuisse Lonza Services Ag | Extruding profile or similar item from ingot |
-
2002
- 2002-03-13 DE DE10211267A patent/DE10211267A1/en not_active Withdrawn
-
2003
- 2003-02-26 CN CN03805838.3A patent/CN1642668A/en active Pending
- 2003-02-26 AT AT03714656T patent/ATE308389T1/en not_active IP Right Cessation
- 2003-02-26 JP JP2003576131A patent/JP2005527379A/en not_active Ceased
- 2003-02-26 DE DE50301550T patent/DE50301550D1/en not_active Expired - Fee Related
- 2003-02-26 WO PCT/DE2003/000600 patent/WO2003078087A1/en active IP Right Grant
- 2003-02-26 EP EP03714656A patent/EP1483066B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ATE308389T1 (en) | 2005-11-15 |
| DE50301550D1 (en) | 2005-12-08 |
| WO2003078087A1 (en) | 2003-09-25 |
| EP1483066A1 (en) | 2004-12-08 |
| JP2005527379A (en) | 2005-09-15 |
| CN1642668A (en) | 2005-07-20 |
| DE10211267A1 (en) | 2003-09-25 |
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