EP0780173A2 - Procédé de fabrication d'une section de tuyau, notamment d'un embranchement de convertisseur et embranchement de convertisseur ainsi fabriqué - Google Patents

Procédé de fabrication d'une section de tuyau, notamment d'un embranchement de convertisseur et embranchement de convertisseur ainsi fabriqué Download PDF

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Publication number
EP0780173A2
EP0780173A2 EP96119402A EP96119402A EP0780173A2 EP 0780173 A2 EP0780173 A2 EP 0780173A2 EP 96119402 A EP96119402 A EP 96119402A EP 96119402 A EP96119402 A EP 96119402A EP 0780173 A2 EP0780173 A2 EP 0780173A2
Authority
EP
European Patent Office
Prior art keywords
welded
finished
pipe branch
bent
winding part
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.)
Withdrawn
Application number
EP96119402A
Other languages
German (de)
English (en)
Other versions
EP0780173A3 (fr
Inventor
Norbert Klein
Jürgen Schwandner
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.)
Eberspaecher Climate Control Systems GmbH and Co KG
Original Assignee
J Eberspaecher GmbH and Co KG
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 J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Publication of EP0780173A2 publication Critical patent/EP0780173A2/fr
Publication of EP0780173A3 publication Critical patent/EP0780173A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • 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
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/0803—Making tubes with welded or soldered seams the tubes having a special shape, e.g. polygonal tubes
    • 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
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
    • B21C37/29—Making branched pieces, e.g. T-pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing

Definitions

  • the invention relates to a method for producing a pipe part, in particular a manifold pipe branch of a motor vehicle exhaust system, and a manifold pipe branch produced by this method.
  • a manifold pipe branch To produce a manifold pipe branch, it is known to insert a straight or curved pipe with a lateral mandrel opening as a semifinished product into a calibration mold, the inner contour of which corresponds to the outside target contour of the manifold pipe branch to be produced.
  • the tube introduced into the calibration mold is closed pressure-tight at its ends, a pressure medium source being connected at least to one pressure-tight tube end.
  • a preferably liquid pressure medium, in particular a water-oil emulsion is then pressed from a pressure source into the interior of the tube under high pressure and the tube is calibrated into the mold by the internal pressure.
  • the deformed tube is then removed from the calibration mold and, if necessary, cut to the end with flat or oblique cuts.
  • the manufacturing process is generally known as the so-called high pressure process. It has the disadvantage of being comparatively complex Manufacturing and is therefore comparatively expensive. It is also only possible to produce pipe parts which are asymmetrical to a limited extent, for example an exhaust system of a motor vehicle, provided that the one-piece design is not dispensed with.
  • the object of the invention is to provide a method of the type mentioned at the outset which enables simple and reliable manufacture of a pipe part, in particular a manifold pipe branch.
  • An elbow pipe branch produced according to the invention is characterized by the features of claim 4, advantageously further developed by the features of claims 5 to 9.
  • the essence of the invention is the production of manifold pipe branches and the like according to a special winding technique while avoiding the internal high-pressure process.
  • a sheet metal coil or blank blank is deep-drawn in a progressive tool and trimmed to form a semi-finished tube part which corresponds to the developed shape of the finished tube part. Then, in further procedural steps, the semi-finished tube part is pre-bent and wound in the progressive tool and the finally bent winding part is welded gas-tight in its bent middle contact area.
  • the bent, welded winding part can possibly be subjected to a calibration process in order to obtain the final inner fit.
  • the welding process is carried out by setting in particular a continuous weld or fillet in the bent contact area of a winding part, in particular by compressing the contact area in order to overcome the restoring force in the opening direction of the pipe sections bent towards one another.
  • a manifold pipe branch of a motor vehicle exhaust system is preferably produced in the form of a welded, one-piece winding part with an essentially straight pipe section and at least one lateral pipe branch section, wherein a completely bent winding part can have two short rims in its central contact area, which are welded on the end face by means of a weld seam are.
  • a short shelf and a longer shelf can also be provided, which are welded to one another laterally by means of a fillet weld.
  • the finished bent winding part can also engage in a box shape in its middle contact area and be welded there with a fillet weld.
  • elbow pipe branch in the intermediate region between the straight pipe section and the lateral pipe section is designed to be flush with one another and has a closed contour which is provided with a weld seam. This enables a weld seam that is particularly easy to set when a weld is created gas-tight connection in a difficult welding area.
  • manifold pipe branches can be easily manufactured, which are double-walled.
  • FIGS. 1 to 3 a manifold pipe branch 1 of a motor vehicle exhaust system is shown schematically in different manufacturing stages according to FIGS. 1 to 3, with FIGS. 4 to 7 showing different details.
  • the manifold pipe branch is not manufactured according to the internal high-pressure process, but according to a special winding process.
  • a sheet metal plate / circuit board or a coil is used as the starting material, which is shaped, stamped and / or trimmed in a complex progressive tool 4, which is only shown schematically.
  • the progressive tool 4 comprises a base plate and a head plate and various interchangeable individual tools.
  • a semi-finished tube part 5 is already shown in the form of a trimmed deep-drawn part made of sheet metal, which has arisen from the board in the progressive tool.
  • the semifinished product corresponds to the developed form of the tubular part end product, namely the elbow pipe branch 1.
  • the mandrel 14 has an outer diameter which corresponds to the inner diameter of the straight pipe section 2 of the pipe branch to be manufactured.
  • a follow-up single tool (not illustrated) has one Mandrel 14 (without web) so that a complete bending is possible.
  • the middle bent contact area 7 which has the tendency to open by spring force, is held together by a tensioning device and welded in the tensioned state along the line of contact without interruption, so that a gas-tight connection is created and no exhaust gas during operation of the System can escape through a gap.
  • FIGS. 4 to 6 Different welding possibilities of the middle bent-over contact area 7 are shown in FIGS. 4 to 6.
  • Fig. 5 schematically illustrates a side fillet weld on a short and a long board touching.
  • FIG. 3 a further embodiment variant of a winding part 6 is shown in dashed lines with an intermediate region 11 between a straight pipe section 2 and a lateral pipe branch section 3, the intermediate region 11 being an overlapping area of the pipe wall lying flat against one another, the foremost contour 12 of which is closed and with a weld seam is provided in the manner of FIG. 4.
  • a simple means to close a tube part end product or winding part 6 manufacture in particular a manifold pipe branch 1 of a motor vehicle exhaust system, starting from a flat sheet metal coil or blank blank, which is deep-drawn and trimmed in a progressive tool 4 to form a semi-finished pipe part, which corresponds to the developed shape of the pipe part end product corresponds.
  • the pipe part semi-finished product is then pre-bent and wound in further process steps in the progressive tool.
  • a finished bent winding part is finally welded gas-tight in its bent central contact area 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
EP96119402A 1995-12-22 1996-12-04 Procédé de fabrication d'une section de tuyau, notamment d'un embranchement de convertisseur et embranchement de convertisseur ainsi fabriqué Withdrawn EP0780173A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995148224 DE19548224A1 (de) 1995-12-22 1995-12-22 Verfahren zur Herstellung eines Rohrteiles, insbesondere einer Krümmer-Rohrabzweigung einer Kraftfahrzeug-Abgasanlage, sowie eine hiernach gefertigte Krümmer-Rohrabzweigung
DE19548224 1995-12-22

Publications (2)

Publication Number Publication Date
EP0780173A2 true EP0780173A2 (fr) 1997-06-25
EP0780173A3 EP0780173A3 (fr) 1998-10-21

Family

ID=7781071

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96119402A Withdrawn EP0780173A3 (fr) 1995-12-22 1996-12-04 Procédé de fabrication d'une section de tuyau, notamment d'un embranchement de convertisseur et embranchement de convertisseur ainsi fabriqué

Country Status (2)

Country Link
EP (1) EP0780173A3 (fr)
DE (1) DE19548224A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2811741A1 (fr) * 2000-07-17 2002-01-18 Imphy Ugine Precision Procede de fabrication d'un element de structure ayant une paroi metallique de forme generale tubulaire et element de structure
EP1242200A1 (fr) * 1999-04-13 2002-09-25 McKenna, Joseph Procedes de fabrication de connecteurs en t
WO2003031091A1 (fr) * 2001-10-06 2003-04-17 Daimlerchrysler Ag Procede de production d'un tuyau de derivation
CN103920744A (zh) * 2014-05-04 2014-07-16 唐山诚达建设集团有限公司 一种带支管管件一体加工设备
CN106077132A (zh) * 2016-07-07 2016-11-09 燕山大学 一种大型板制双焊缝三通的成形方法及成形装置
WO2019144603A1 (fr) * 2018-01-26 2019-08-01 天纳克（苏州）排放***有限公司 Tube d'entrée de gaz d'échappement et dispositif de traitement de gaz d'échappement de type boîte
CN115673694A (zh) * 2023-01-03 2023-02-03 内江东工设备制造股份有限公司 一种超大型钢岔管的制作方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10358502B3 (de) * 2003-12-13 2005-04-07 Daimlerchrysler Ag Verfahren und Einrichtung zur Herstellung eines Hohlprofils

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE373874A (fr) *
US1830262A (en) * 1928-09-21 1931-11-03 Rockwood Sprinkler Co Massachusetts Method of making pipe fittings
FR761992A (fr) * 1933-09-26 1934-03-31 Cie Nat Radiateurs Tuyau ou raccord en t et son procédé de fabrication
US2713195A (en) * 1951-03-15 1955-07-19 Solar Aircraft Co Method of making an engine manifold
FR1327091A (fr) * 1962-03-19 1963-05-17 Neyrpic Ateliers Neyret Beylie Perfectionnements aux procédés de fabrication de pièces de tuyauterie
JPS53116267A (en) * 1977-03-23 1978-10-11 Mitsubishi Plastics Ind Ltd Manufacture of branched pipe joint
EP0321869A1 (fr) * 1987-12-21 1989-06-28 Nissan Motor Co., Ltd. Collecteur d'échappement
DE4113855A1 (de) * 1991-04-27 1992-08-20 Bayerische Motoren Werke Ag Konischer wickel-schalldaempfer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE373874A (fr) *
US1830262A (en) * 1928-09-21 1931-11-03 Rockwood Sprinkler Co Massachusetts Method of making pipe fittings
FR761992A (fr) * 1933-09-26 1934-03-31 Cie Nat Radiateurs Tuyau ou raccord en t et son procédé de fabrication
US2713195A (en) * 1951-03-15 1955-07-19 Solar Aircraft Co Method of making an engine manifold
FR1327091A (fr) * 1962-03-19 1963-05-17 Neyrpic Ateliers Neyret Beylie Perfectionnements aux procédés de fabrication de pièces de tuyauterie
JPS53116267A (en) * 1977-03-23 1978-10-11 Mitsubishi Plastics Ind Ltd Manufacture of branched pipe joint
EP0321869A1 (fr) * 1987-12-21 1989-06-28 Nissan Motor Co., Ltd. Collecteur d'échappement
DE4113855A1 (de) * 1991-04-27 1992-08-20 Bayerische Motoren Werke Ag Konischer wickel-schalldaempfer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 002, no. 152 (C-031), 20.Dezember 1978 & JP 53 116267 A (MITSUBISHI PLASTICS IND LTD), 11.Oktober 1978, *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1242200A1 (fr) * 1999-04-13 2002-09-25 McKenna, Joseph Procedes de fabrication de connecteurs en t
EP1242200A4 (fr) * 1999-04-13 2004-03-31 Joseph Mckenna Procedes de fabrication de connecteurs en t
US7381476B2 (en) 2000-07-17 2008-06-03 Imphy Ugine Precision Structural element having a metal wall of generally tubular shape
WO2002005979A1 (fr) * 2000-07-17 2002-01-24 Imphy Ugine Precision Procede de fabrication d'un element de structure ayant une paroi metallique de forme generale tubulaire et element de structure
FR2811741A1 (fr) * 2000-07-17 2002-01-18 Imphy Ugine Precision Procede de fabrication d'un element de structure ayant une paroi metallique de forme generale tubulaire et element de structure
US6814275B2 (en) 2000-07-17 2004-11-09 Imphy Ugine Precision Method for making a structural element having a generally tubular metal wall and structural element
WO2003031091A1 (fr) * 2001-10-06 2003-04-17 Daimlerchrysler Ag Procede de production d'un tuyau de derivation
CN103920744A (zh) * 2014-05-04 2014-07-16 唐山诚达建设集团有限公司 一种带支管管件一体加工设备
CN103920744B (zh) * 2014-05-04 2016-01-27 唐山诚达建设集团有限公司 一种带支管管件一体加工设备
CN106077132A (zh) * 2016-07-07 2016-11-09 燕山大学 一种大型板制双焊缝三通的成形方法及成形装置
WO2019144603A1 (fr) * 2018-01-26 2019-08-01 天纳克（苏州）排放***有限公司 Tube d'entrée de gaz d'échappement et dispositif de traitement de gaz d'échappement de type boîte
CN115673694A (zh) * 2023-01-03 2023-02-03 内江东工设备制造股份有限公司 一种超大型钢岔管的制作方法
CN115673694B (zh) * 2023-01-03 2023-03-03 内江东工设备制造股份有限公司 一种超大型钢岔管的制作方法

Also Published As

Publication number Publication date
DE19548224A1 (de) 1997-06-26
EP0780173A3 (fr) 1998-10-21

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