DE562804C - Mandrel for bending pipes - Google Patents

Mandrel for bending pipes

Info

Publication number
DE562804C
DE562804C DES99986D DES0099986D DE562804C DE 562804 C DE562804 C DE 562804C DE S99986 D DES99986 D DE S99986D DE S0099986 D DES0099986 D DE S0099986D DE 562804 C DE562804 C DE 562804C
Authority
DE
Germany
Prior art keywords
mandrel
curvature
bending
plates
links
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
Application number
DES99986D
Other languages
German (de)
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.)
OTTO SEYDEWITZ
Original Assignee
OTTO SEYDEWITZ
Publication date
Priority to DES99986D priority Critical patent/DE562804C/en
Application granted granted Critical
Publication of DE562804C publication Critical patent/DE562804C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D9/00Bending tubes using mandrels or the like
    • B21D9/01Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length
    • B21D9/03Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length and built-up from loose elements, e.g. series of balls

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Description

Gegenstand der Erfindung ist ein aus gelenkig miteinander verbundenen, bei beendigter Biegung aneinanderliegenden Gliedern bestehender Dorn zum Biegen von Rohren, weleher sich bekannten derartigen Dornen gegenüber dadurch vorteilhaft unterscheidet, daß die Glieder als Ringsektoren ausgebildet sind, deren Schnittebenen sich bei beendigter Biegung in der im Krümmungsmittelpunkt zur ι ο Krümmungsebene senkrechten Geraden schneiden. Durch diese Formgebung der Glieder wird erreicht, daß diese beim Biegen einen ununterbrochenen Ringmantel bilden und daher beim Biegen nur nach außen liegende Falten entstehen lassen.The invention relates to an articulated interconnected when finished Bending of adjacent links existing mandrel for bending pipes, weleher known thorns of this type differ advantageously in that the links are designed as ring sectors, the sectional planes of which are at the end of the bending Cut in the straight line perpendicular to the ι ο plane of curvature in the center of curvature. This shaping of the links ensures that they form an uninterrupted ring jacket when they are bent and therefore only fold outwardly lying folds when bending.

Diese Glieder sind durch Bolzen und mitThese links are bolted and with

Langlöchern versehene Platten verbunden, wobei die Platten durch um die Bolzen gelegte Rohre vor Verschiebung senkrecht zur Krüm-Plates provided with elongated holes are connected, the plates being put through around the bolts Pipes before displacement perpendicular to the bend

ao mungsebene geschützt sind.ao mation level are protected.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt; es zeigen:In the drawing, an embodiment of the invention is shown; show it:

Abb. ι einen Längsschnitt durch den Dorn in gestrecktem Zustande,Fig. Ι a longitudinal section through the mandrel in the stretched state,

»5 Abb. 2 eine Seitenansicht des Dorns im gebogenen Zustande,»5 Fig. 2 is a side view of the mandrel in bent state,

Abb. 3 einen Längsschnitt nach Linie A-B in Abb. 1,Fig. 3 is a longitudinal section along line AB in Fig. 1,

Abb. 4 eine schaubildliche Ansicht eines Dorngliedes in größerem Maßstabe undFig. 4 is a perspective view of a mandrel member on a larger scale and

Abb. 5 eine Ansicht einer Verbindungsplatte mit Langlöchern in größerem. Maßstabe. Fig. 5 is a larger view of a connecting plate with elongated holes. Scale.

Der Dorn besteht aus einer Anzahl von Gliedern 1, welche gelenkig miteinander verbunden sind. Gemäß der Erfindung sind die Glieder als Ringsektoren ausgebildet und so gelenkig miteinander verbunden, daß sich die Schnittebenen der Ringsektoren bei beendigter Biegung in der im Krümmungsmittelpunkt zur Krümmungsebene senkrechten Geraden schneiden. Durch jedes Glied r ist ein Bolzen 2- hindurchgeführt, welcher durch ein Langloch 3 von kettenartig aufeinanderliegenden Verbindungsplatten 4 im Innern des Gliedes ι. führt. Die Platten 4 sind je mit zwei Langlöchern 3 versehen, durch die die Bolzen 2 zweier nebeneinanderliegender Glieder ι hindurchgeführt sind. Um die Bolzen 2 gelegte Rohre 5 verhindern eine seitliche Ver- r0 Schiebung der Platten 4.The mandrel consists of a number of links 1 which are hingedly connected to one another. According to the invention, the links are designed as ring sectors and are connected to one another in an articulated manner such that the cutting planes of the ring sectors intersect in the straight line perpendicular to the plane of curvature at the center of curvature when the bending is completed. A bolt 2- is passed through each link r, which bolt ι through an elongated hole 3 of connecting plates 4 lying on top of one another in a chain-like manner in the interior of the link. leads. The plates 4 are each provided with two elongated holes 3 through which the bolts 2 of two adjacent members ι are passed. About the pins 2 down pipes 5 prevent lateral shifting of the plates encryption r 0. 4

Die Wirkungsweise ist folgende:
Der Dorn wird in das zu biegende Rohr gesteckt. Wenn das Rohr gebogen ist, nimmt der Dorn die Lage der Abb. 2 ein. Die einzelnen Glieder 1 liegen hierbei satt aneinander, so daß eine ununterbrochene Ringfläche gebildet ist. Beim Biegen des Rohres muß sich dieses dem Dorn anschmiegen, so daß in der Rohrwandung nur nach außen gerichtete Falten gebildet werden können.
The mode of action is as follows:
The mandrel is inserted into the pipe to be bent. When the tube is bent, the mandrel takes the position shown in Fig. 2. The individual links 1 lie close to one another, so that an uninterrupted ring surface is formed. When the pipe is bent, it must cling to the mandrel so that only outwardly directed folds can be formed in the pipe wall.

Claims (3)

Patentanspruch·:Patent claim: 1. Aus gelenkig miteinander verbundenen, bei beendigter Biegung aneinander anliegenden Gliedern bestehender Dorn zum Biegen von Rohren, dadurch gekennzeichnet, daß die Glieder (r) Ringsektoren und diese so miteinander verbunden sind, daß sich ihre Schnittebenen bei beendigter Biegung sämtlich in der im Krümmungsmittelpunkt zur Krümmungsebene senkrechten Geraden schneiden.1. From hingedly connected to each other when the bending is complete adjacent links existing mandrel for bending pipes, characterized in, that the link (r) ring sectors and these are connected to one another so that their cutting planes are at the end of the Cut all bends in the straight line perpendicular to the plane of curvature in the center of curvature. 2. Dorn nach Anspruch 1, dadurch gekennzeichnet, daß die Glieder (1) durch Bolzen (2) und mit Langlochern (3) versehene Platten (4) miteinander verbunden sind.2. mandrel according to claim 1, characterized in that that the links (1) are provided with bolts (2) and elongated holes (3) Plates (4) are interconnected. 3. Dorn nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Platten (4) durch um den Bolzen gelegte Rohre (5) vor Verschiebung senkrecht zur Krümmungsebene geschützt sind.3. mandrel according to claim 1 and 2, characterized in that the plates (4) through Pipes (5) placed around the bolt before displacement perpendicular to the plane of curvature are protected. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DES99986D Mandrel for bending pipes Expired DE562804C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES99986D DE562804C (en) Mandrel for bending pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES99986D DE562804C (en) Mandrel for bending pipes

Publications (1)

Publication Number Publication Date
DE562804C true DE562804C (en) 1932-10-29

Family

ID=7522726

Family Applications (1)

Application Number Title Priority Date Filing Date
DES99986D Expired DE562804C (en) Mandrel for bending pipes

Country Status (1)

Country Link
DE (1) DE562804C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2528315A (en) * 1945-05-15 1950-10-31 Dresser Ind Apparatus for forming tubular l's
DE1036015B (en) * 1953-11-04 1958-08-07 Western Electric Co Mandrel for internally supporting non-circular pipes when twisting
EP1488866A2 (en) * 2003-06-19 2004-12-22 Kabushiki Kaisha Opton Mandrel for bending
WO2009135796A1 (en) * 2008-05-06 2009-11-12 Thyssenkrupp Steel Ag Supporting core for producing hollow profiled elements
CN103240311A (en) * 2013-05-27 2013-08-14 倪慨宇 Flexibility core rod for stretching hollow metal tube section bar to be bent

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2528315A (en) * 1945-05-15 1950-10-31 Dresser Ind Apparatus for forming tubular l's
DE1036015B (en) * 1953-11-04 1958-08-07 Western Electric Co Mandrel for internally supporting non-circular pipes when twisting
EP1488866A2 (en) * 2003-06-19 2004-12-22 Kabushiki Kaisha Opton Mandrel for bending
EP1488866A3 (en) * 2003-06-19 2005-11-23 Kabushiki Kaisha Opton Mandrel for bending
US7219527B2 (en) 2003-06-19 2007-05-22 Kabushiki Kaisha Opton Mandrel for bending
WO2009135796A1 (en) * 2008-05-06 2009-11-12 Thyssenkrupp Steel Ag Supporting core for producing hollow profiled elements
CN102015141A (en) * 2008-05-06 2011-04-13 蒂森克虏伯钢铁欧洲股份公司 Supporting core for producing hollow profiled elements
CN102015141B (en) * 2008-05-06 2013-11-27 蒂森克虏伯钢铁欧洲股份公司 Supporting core for producing hollow profiled elements
US8881572B2 (en) 2008-05-06 2014-11-11 Thyssenkrupp Steel Europe Ag Supporting core for producing hollow profiled elements
CN103240311A (en) * 2013-05-27 2013-08-14 倪慨宇 Flexibility core rod for stretching hollow metal tube section bar to be bent
CN103240311B (en) * 2013-05-27 2015-06-17 倪慨宇 Flexibility core rod for stretching hollow metal tube section bar to be bent

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