DE1051229B

DE1051229B - Block receiver for metal extrusion

Info

Publication number: DE1051229B
Application number: DEL29457A
Authority: DE
Inventors: Robert Max Ludwig Elkan
Original assignee: Loewy Engineering Co Ltd
Current assignee: Loewy Engineering Co Ltd
Priority date: 1958-01-14
Filing date: 1958-01-14
Publication date: 1959-02-26

Description

DEUTSCHESGERMAN

Die Erfindung hat einen Blockaufnehmer für Metallstrangpressen mit von einer zylindrischen Innenwand zusammengehaltenen Einsätzen, die je eine ebene Seitenwand eines rechteckigen Hohlraumes bilden, zur Voraussetzung.The invention has a billet for metal extrusion presses with a cylindrical inner wall held together inserts, each forming a flat side wall of a rectangular cavity, for Pre-condition.

Blockaufnehmer für Metallstrangpressen, deren Innenwände eben sind und einen rechteckigen Hohlraum begrenzen, sind bekannt. Ferner ist es bekannt, einen Blockaufnehmer für Metallstrangpressen mit Einsätzen zu versehen, die von einer zylindrischen Innenwand des Aufnehmers zusammengehalten werden und je eine hohlgewölbte Seitenwand eines zylindrischen Hohlraums bilden. Schließlich ist eine Preßform zum Herstellen eines Preßlings aus Metallpulver bekannt, die mit Einsätzen versehen ist, die von einer zylindrischen Innenwand der Preßform zusammengehalten werden und je eine ebene Seitenwand eines rechteckigen Hohlraums bilden.Block receiver for metal extrusion presses, the inner walls of which are flat and a rectangular cavity limit are known. It is also known to have a billet for metal extrusion To provide inserts that are held together by a cylindrical inner wall of the transducer and each form a concave side wall of a cylindrical cavity. Finally, there is a compression mold known for the production of a compact from metal powder, which is provided with inserts of a cylindrical inner wall of the mold are held together and one flat side wall each Form rectangular cavity.

Der Erfindung liegt die Aufgabe zugrunde, die Lebensdauer der Einsätze des Blockaufnehmers zu verlängern. The invention is based on the object of extending the service life of the block pick-up inserts.

Erfindungsgemäß sind auf den Einsätzen Verschleißplatten befestigt, die mit ihren Innenwänden die rechteckige Blockaufnehmerkammer bilden.According to the invention wear plates are attached to the inserts, the rectangular with their inner walls Form block receiving chamber.

Vorzugsweise hat die Verschleißplatte an einem oder an beiden Längsenden auswärts gerichtete Leisten, die in Aussparungen des zugehörigen Einsatzes passen.Preferably, the wear plate has outwardly directed strips on one or both longitudinal ends, which fit in recesses of the associated insert.

Dabei empfiehlt es sich, daß ein Einsatz mehrere, in Erstreckung seiner Breite nebeneinander angeordnete Verschleißplatten erhält. Auch kann eine Verschleißplatte mehrere Einzelabschnitte eines in Aufnehmerachsrichtung unterteilten Einsatzes überdecken. An sich sind Verschleißplatten in der Maschinenbautechnik, so z. B. bei Drehbankbetten usw., bekannt.It is recommended that an insert has several, arranged side by side in the extension of its width Wear plates received. A wear plate can also have several individual sections of one in the direction of the axis of the transducer cover the subdivided insert. In themselves, wear plates are used in mechanical engineering, so z. B. in lathe beds, etc., known.

Die Erfindung ist im einzelnen an Hand von Ausführungsbeispielen näher erläutert. In den Zeichnungen zeigtThe invention is explained in more detail using exemplary embodiments. In the drawings shows

Fig. 1 die Stirnansicht eines Aufnehmers,Fig. 1 is the front view of a transducer,

Fig. 2 den teilweisen Längsschnitt nach der Linie 2-2 der Fig. 1 in größerem Maßstab,FIG. 2 shows the partial longitudinal section along the line 2-2 of FIG. 1 on a larger scale,

Fig. 3 einen der Fig. 2 entsprechenden Schnitt einer abgewandelten Ausführungsform und3 shows a section corresponding to FIG. 2 of a modified embodiment and

Fig. 4 den Querschnitt nach der Linie 4-4 der Fig. 3.FIG. 4 shows the cross section along the line 4-4 in FIG. 3.

Der in Fig. 1 veranschaulichte Aufnehmer hat ein Gehäuse 10 mit einem zylindrischen Hohlraum 11, in den ein zylindrischer, buchsenförmiger Mantel 12 mit Preßsitz eingepaßt ist. Statt dessen könnte der Mantel 12 auch in einen zylindrischen Futterhalter eingesetzt sein, der zwischen dem Mantel und dem Gehäuse 10 liegt. Dieses Gehäuse hat einen rechteckigen Umriß.The transducer illustrated in Fig. 1 has a housing 10 with a cylindrical cavity 11, in which a cylindrical, sleeve-shaped jacket 12 is fitted with a press fit. Instead, the coat could 12 can also be inserted into a cylindrical chuck holder which is positioned between the jacket and the housing 10 lies. This housing has a rectangular outline.

Der Mantel 12 hat eine zylindrische Bohrung 13, in der sich eine Gruppe von vier Einsätzen 14, 15, 16 und 17 befinden, die je das Querschnittsprofil eines abgestumpften Kreissektors haben. Dementsprechend hat Blockaufnehmer für MetallstrangpressenThe jacket 12 has a cylindrical bore 13 in which a group of four inserts 14, 15, 16 and 17 are located, each of which has the cross-sectional profile of a truncated circular sector. Accordingly has Billet pick-up for metal extrusion

Anmelder:Applicant:

The Loewy Engineering Company Limited, Bournemouth (Großbritannien)The Loewy Engineering Company Limited, Bournemouth (Great Britain)

Vertreter:Representative:

Dipl.-Ing. M. Licht, Berlin-Steglitz, Borstellstr. 51, und Dr. R. Schmidt, Oppenau (Renchtal), PatentanwälteDipl.-Ing. M. Licht, Berlin-Steglitz, Borstellstr. 51, and Dr. R. Schmidt, Oppenau (Renchtal), patent attorneys

Robert Max Ludwig Elkan,Robert Max Ludwig Elkan,

Bournemouth West (Großbritannien),Bournemouth West (Great Britain),

ist als Erfinder genannt wordenhas been named as the inventor

jeder Einsatz eine ebene Innenfläche 14α, 15α, 16α oder 17a, ferner eine zylindrisch gewölbte äußere Fläche 14 b, 155, 165 oder 175, und schließlich radial verlaufende Flächen 14c, 15c, 16c oder 17c, die die Enden der Innenflächen mit den Enden der Außenflächen verbinden. Die vier Innenflächen 14a bis 17a sind zueinander so angeordnet, daß sie zusammen einen rechteckigen Hohlraum begrenzen. Die radialen Flächen 14 c des Einsatzes 14 liegen spielraumfrei an den entsprechenden radialen Flächen 15 c und 17 c der beiden benachbarten Einsätze an. Dieselbe Anordnung ist bei den drei änderen Einsätzen getroffen. Der Mantel 12 ist auf die Einsätze 14 bis 17 aufgeschrumpft. Auf den Innenflächen 14a bis 17a der Einsätze sind besondere Verschleißplatten 18, 19, 20 und 21 befestigt, die je die Innenfläche eines Einsatzes verkleiden. Die Blockkammer 22 ist daher von diesen Verschleißplatten rings umgeben, so daß die Einsätze selbst beim Strangpreßvorgang mit den verpreßten Blöcken nicht in Berührung kommen. Der dabei entstehende Verschleiß beschränkt sich also auf die Ver-each insert has a flat inner surface 14α, 15α, 16α or 17a further comprises a cylindrically curved outer surface 14 b, 155, 165 or 175, and finally radially extending surfaces 14c, 15c, 16c or 17c, the ends of the inner surfaces of the ends of the Connect external surfaces. The four inner surfaces 14a to 17a are arranged relative to one another in such a way that they together delimit a rectangular cavity. The radial surfaces 14 c of the insert 14 rest without clearance on the corresponding radial surfaces 15 c and 17 c of the two adjacent inserts. The same arrangement is made for the three other missions. The jacket 12 is shrunk onto the inserts 14 to 17. On the inner surfaces 14a to 17a of the inserts special wear plates 18, 19, 20 and 21 are attached, which each cover the inner surface of an insert. The block chamber 22 is therefore surrounded by these wear plates so that the inserts do not come into contact with the pressed blocks even during the extrusion process. The resulting wear is therefore limited to the

809 767/186809 767/186

Claims

3 43 4

wear plates so that the inserts can not wear out the side faces in the direction of the trap

mterlie. Diagonals of the rectangular cross-section of the block

The plates can be rectangular or chambers.

η he easy-to-work plates, whose usually one sees a single one for each use Thickness can be approximately 25 mm or more. 5 wear plate in front. This then extends over The wear plate can therefore not only more easily cover the entire inner surface of the insert. The one in the manufacture, but it also has less weight than the drawings illustrated embodiment, the stake. Therefore, when these panels become unusable, in which four inserts are provided This means that the costs are much lower. Available for four wear plates. But it also exists Its bore 13 of a given diameter reduces the possibility, especially in the case of inserts with very Gert is the height of the wide inner surfaces to be built into this hole, so z. B. at the top and bottom Stakes around the strength of the wear plates. arranged inserts 14 and 16 in Figs. 1 and 4, Each locking plate is attached to the two or more small locking plates assigned to it Insert fixed so that it can be arranged under the influence of on an insert. This makes it easier the forces 15 acting on them during the extrusion process result in the production of the wear plates. One can can not move, but still after an ent- then z. B. the wear plates made of strips appealing Wear slightly different from their use, the width of which is considerably less than the width can be taken. of use can be. This can be of great importance in the exemplary embodiment of the invention which is used in those cases in which it concerns the 1 and 2 is illustrated, is a wear plate for a pickup is with Wear plate at one or both of its ends with the help of which blocks are to be pressed, the width of which outwardly protruding strips 23 provided, for example, to 500 to 750 mm or more leg appropriately profiled recesses of the assigned can run.

take action. These bars serve the reverse, it is also possible for in the axial direction

Purpose, an axial displacement of the wear plate 25 of the transducer subdivided inserts whose individual clamps

to prevent them from being used, and so they can cut with their inner surfaces in a single

can be attached to the insert in any way.

the, z. B. also to arrange a common wear plate in the direction of the dash-dotted line.

Lines 24 running pens. The transducer is B. for the case in which the transducer

used in the press that the inserts and the 30 has a large axial length. The individual parts of each

Wear plates rest on the die unit, smaller and lighter inserts can then be selected

which in Figs. 2 and 3, the die 26 and the measure, than would be the case if the subdivision

die holder 27 can be seen. The stakes and the refrain.

Wear plates are attached to the die unit the usual means of showing the wear plate, which is not attached in more detail, against another are pressed firmly so that the wear plate of a different thickness can be replaced. Since the the end of the transducer facing the die a thickness of the closure plates the dimensions of the tight closure of the block receiving chamber between the block receiving chamber, one can through see the inner parts of the transducer and the dimensions- this replacing the size of the block chamber results. For this reason it would theoretically be 40 change without having to change the inserts not required, on the one facing away from the die. It is true that these amendments can do so Provide strips at the end of the wear plate. the measure only by relatively small amounts in Preferably, however, the two ends are of the order of magnitude of at most about 10 or 15 cm Negotiate every wear plate with such strips, but this already means an essential one see so you get both the stakes and the 45 advantage.

Wear plates in the reverse position in the up- If a wear plate is worn too much, so

can be installed by the user if this is desired. if you take them from their use in the described

To attach the wear plates to the one-way off, then you have to remove the plate

sets can also serve dowel pins 25, which can work on the worn places. Under certain circumstances

In place of the strips or in addition to protrusions, the wear and tear can be so slight that one

are seen, -cf. Fig. 3. ^x When using such the plate then after processing again from

The pins indicated at 24 are unnecessary. new for blocks that are about the same

In Fig. 3, only one dowel pin size is for each wear plate as before, provided you have a press washer

shown, but any wear plate can of course be used with oversized ones. Serve in other cases

be provided with a number of dowel pins, the 55 then the restored wear plates for

run in Fig. 4 indicated by dash-dotted lines - installation in block chambers of larger dimensions, is tet.

Do you want a wear plate from their use

solve, this can be done simply by making claims.

bores out the dowel pins. 60

As a result, the closure plates can also be connected to 1-block receptacles for metal extrusion presses their inserts are attached by welding them together on a cylindrical inner wall, in particular by spot welding, or held inserts, each having a flat side wall shrinks. Both when welding and forming a rectangular cavity, thereby when shrinking on it is advisable to have the arrangement 65 marked that on the inserts wear-and-tear Strips or the dowel pins or both supplementary plates are attached to their inner walls keep. form the rectangular block storage chamber.

The side surfaces of a wear plate with which 2. Block pick-up according to claim 1, characterized

they are marked on the side surfaces of the adjacent wear plate that the wear plate is on one plates can be bevelled. In this 70 or at both longitudinal ends directed outwards

5 65 6

Has strips that are in recesses of the associated several individual sections of a pick-up axis

Insert fit. Direction of the subdivided insert covered.

3. Block pick-up according to claim 1 or 2, there-

characterized in that an insert several, in

Extent of its width adjacent angeord- 5 ^Contemplated publications:

has nice wear plates. German Patent Nos. 893 880, 915 204;

4. Block picker according to claim 1 or 2, French patent specification no. 895 100; characterized in that a wear plate U.S. Patent No. 2,283,791.

1 sheet of drawings