DE242905C - - Google Patents

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Publication number
DE242905C
DE242905C DENDAT242905D DE242905DA DE242905C DE 242905 C DE242905 C DE 242905C DE NDAT242905 D DENDAT242905 D DE NDAT242905D DE 242905D A DE242905D A DE 242905DA DE 242905 C DE242905 C DE 242905C
Authority
DE
Germany
Prior art keywords
pipe
die opening
cutting
mandrel
ring
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.)
Active
Application number
DENDAT242905D
Other languages
German (de)
Publication of DE242905C publication Critical patent/DE242905C/de
Active legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C35/00Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
    • B21C35/04Cutting-off or removing waste

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Bei der Herstellung von Rohren aus einem Metallblock mittels des Strangpreßverfahrens ist es bekannt, den nach dem Pressen im Aufnehmer verbleibenden Materialrest von dem fertigen Rohre in der Weise abzuschneiden, daß ein lose um den Preßdorn gelegter Ring durch den Preßstempel in die Matrizenöffnung geschoben wird, wobei die Kanten der Matrize und des Ringes als Schneidkanten zurIn the production of pipes from a metal block by means of the extrusion process it is known to remove the remaining material in the receiver after pressing cut off finished tubes in such a way that a ring is loosely placed around the press mandrel is pushed by the ram into the die opening, with the edges of the die and the ring as cutting edges

ίο Wirkung gelangen. Eine derartige Vorrichtung kann den ihr zugedachten Zweck nur dann erfüllen, wenn der Ring wenigstens teilweise in die Matrizen Öffnung eintritt. Da aber die Matrizenöffnung durch den Ring beim Eintritt in dieselbe geschlossen wird, so ist ein weiteres Verdrängen des Metalls und somit ein weiteres Vorgehen des Preßstempels nicht mehr möglich.ίο take effect. Such a device can only fulfill its intended purpose if the ring is at least partially enters the die opening. But there the die opening through the ring when it is closed, there is a further displacement of the metal and further action by the ram is no longer possible.

Um das Abschneiden des fertigen Rohres vom Preßriickstande sicher zu erreichen, wird gemäß der vorliegenden Erfindung der Dorn von da ab, wo das Blockmaterial aus dem Recipienten fast vollständig ausgepreßt ist, so dick gewählt, daß sein Durchmesser dem äußeren Durchmesser des hergestellten Rohres entspricht.In order to achieve the cutting of the finished pipe from the Preßriickstande safely according to the present invention the mandrel from where the block material from the recipient is almost completely squeezed out, chosen so thick that its diameter corresponds to the outer Corresponds to the diameter of the pipe produced.

Die Zeichnung veranschaulicht den betreffenden Teil der Presse zur Durchführung dieses Verfahrens in schematischer Darstellung und im Längsschnitt.The drawing illustrates the relevant part of the press for performing this Process in schematic representation and in longitudinal section.

Es ist hierbei α das zu verarbeitende Blockmaterial, b der Aufnehmer, c der Dorn, d der Preßstempel, e die Matrize und f das hergestellte Rohr. Ist das Blockmaterial a fast ausgepreßt, dann beginnt der von c1 ab dickere Dornteil, welcher, wie erwähnt, dem äußeren Rohrdurchmesser entspricht, das Rohr vom Rückstande abzuschneiden.It is here α the block material to be processed, b the transducer, c the mandrel, d the ram, e the die and f the pipe produced. When the block material a is almost pressed out, the part of the mandrel, which is thicker from c 1 and which, as mentioned, corresponds to the outer pipe diameter, begins to cut off the pipe from the residue.

Claims (1)

Patent-Anspruch :Patent claim: Vorrichtung zum Abschneiden des fertigen Rohres vom Preßrückstande mittels eines mit der Matrizenöffnung als Schneidkante zusammenwirkenden Schneidringes, dadurch gekennzeichnet, daß der Preßdorn (c) selbst eine dem äußeren Rohrdurchmesser entsprechende Verdickung (c1) trägt, welche beim Eindringen in die Matrizenöffnung das Rohr abschneidet.Device for cutting off the finished pipe from the pressing residue by means of a cutting ring cooperating with the die opening as a cutting edge, characterized in that the pressing mandrel (c) itself has a thickening (c 1 ) corresponding to the outer pipe diameter, which cuts off the pipe when it penetrates the die opening. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT242905D Active DE242905C (en)

Publications (1)

Publication Number Publication Date
DE242905C true DE242905C (en)

Family

ID=502074

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
DE (1) DE242905C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE877435C (en) * 1949-02-19 1953-05-26 Schloemann Ag Process for separating the press residue from the pressed pipe on an extruder
US5290721A (en) * 1991-06-28 1994-03-01 Sharp Kabushiki Kaisha Method of making a stacked semiconductor nonvolatile memory device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE877435C (en) * 1949-02-19 1953-05-26 Schloemann Ag Process for separating the press residue from the pressed pipe on an extruder
US5290721A (en) * 1991-06-28 1994-03-01 Sharp Kabushiki Kaisha Method of making a stacked semiconductor nonvolatile memory device

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