EP1275448A3 - Device for sealing the end of a tubular workpiece in an internal high pressure forming tool - Google Patents

Device for sealing the end of a tubular workpiece in an internal high pressure forming tool Download PDF

Info

Publication number
EP1275448A3
EP1275448A3 EP02013671A EP02013671A EP1275448A3 EP 1275448 A3 EP1275448 A3 EP 1275448A3 EP 02013671 A EP02013671 A EP 02013671A EP 02013671 A EP02013671 A EP 02013671A EP 1275448 A3 EP1275448 A3 EP 1275448A3
Authority
EP
European Patent Office
Prior art keywords
pressure
sealing
piston
pressure chamber
workpiece
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Withdrawn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
EP02013671A
Other languages
German (de)
French (fr)
Other versions
EP1275448A2 (en
Inventor
Rafael Garcia Gomez
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.)
Benteler Automobiltechnik GmbH
Original Assignee
Benteler Automobiltechnik GmbH
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 Benteler Automobiltechnik GmbH filed Critical Benteler Automobiltechnik GmbH
Publication of EP1275448A2 publication Critical patent/EP1275448A2/en
Publication of EP1275448A3 publication Critical patent/EP1275448A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • B21D26/045—Closing or sealing means

Abstract

Die Anordnung (1) zum Abdichten eines Endabschnitts (2) eines rohrförmigen Werkstücks (3) in einem Werkzeug (4) zum Innenhochdruckumformen umfasst einen mit dem Endabschnitt (2) zusammenwirkenden Abdichtdorn (20) als zumindest mittelbaren Bestandteil eines Druckkolbens (11). Dieser ist in einer an eine Druckquelle (10) für ein hydraulisches Hochdruckmedium anschließbaren Druckkammer (8) zwangsgeführt. Ferner weist der Druckkolben (11) in einem die Druckkammer (8) mit dem Innenraum (13) des Werkstücks (3) verbindenden axialen Druckkanal (12) ein in Richtung zur Druckkammer (8) sperrendes Rückschlagventil (14) auf. Die wirksame Kolbenfläche (KF) des Druckkolbens (11) in der Druckkammer (8) ist größer als die Querschnittsfläche (QF) im Innenraum (13) des Werkstücks (3) bemessen. Der Druckkolben (11) ist bei von der Druckquelle (10) getrennter Druckkammer (8) durch eine mechanische, elektrische, pneumatische oder hydraulische Rückstellkraft (23) in die Ausgangsposition zurückstellbar.

Figure 00000001
The arrangement (1) for sealing an end section (2) of a tubular workpiece (3) in a tool (4) for hydroforming comprises a sealing mandrel (20) which interacts with the end section (2) as an at least indirect component of a pressure piston (11). This is positively guided in a pressure chamber (8) which can be connected to a pressure source (10) for a hydraulic high-pressure medium. In an axial pressure channel (12) connecting the pressure chamber (8) to the interior (13) of the workpiece (3), the pressure piston (11) has a nonreturn valve (14) blocking the pressure chamber (8). The effective piston area (KF) of the pressure piston (11) in the pressure chamber (8) is larger than the cross-sectional area (QF) in the interior (13) of the workpiece (3). When the pressure chamber (8) is separated from the pressure source (10), the pressure piston (11) can be returned to the starting position by a mechanical, electrical, pneumatic or hydraulic restoring force (23).
Figure 00000001
EP02013671A 2001-07-14 2002-07-01 Device for sealing the end of a tubular workpiece in an internal high pressure forming tool Withdrawn EP1275448A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10134321 2001-07-14
DE10134321A DE10134321C1 (en) 2001-07-14 2001-07-14 Sealing device, for sealing end sector of tubular workpiece, has effective piston area of compression piston in chamber greater than cross section area inside end of workpiece

Publications (2)

Publication Number Publication Date
EP1275448A2 EP1275448A2 (en) 2003-01-15
EP1275448A3 true EP1275448A3 (en) 2004-01-02

Family

ID=7691816

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02013671A Withdrawn EP1275448A3 (en) 2001-07-14 2002-07-01 Device for sealing the end of a tubular workpiece in an internal high pressure forming tool

Country Status (3)

Country Link
US (1) US6804979B2 (en)
EP (1) EP1275448A3 (en)
DE (1) DE10134321C1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007019511B3 (en) * 2007-04-25 2008-11-13 Benteler Automobiltechnik Gmbh Device for hydraulic-interior high pressure transformation of composite metal tube into bottom die and upper die, has forming tool, where medium, between individual tube wall, is escaped during interior high pressure reforming process
DE102009030632C5 (en) 2009-06-25 2014-12-31 Benteler Automobiltechnik Gmbh Method and device for producing a catalyst
US8136378B2 (en) * 2009-09-21 2012-03-20 Ford Global Technologies, Llc Seal for fluid forming tools
US20120047979A1 (en) * 2010-08-25 2012-03-01 Schuler Inc. Hydroforming die assembly and method for deforming a tube
DE102011051965A1 (en) 2011-07-20 2013-01-24 Benteler Automobiltechnik Gmbh Method for producing a tubular structural component for a motor vehicle and structural component
JP5799907B2 (en) * 2012-07-13 2015-10-28 トヨタ自動車株式会社 Leak inspection device
US8910500B2 (en) 2012-09-10 2014-12-16 National Research Council Of Canada Low friction end feeding in tube hydroforming

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB544466A (en) * 1940-01-25 1942-04-14 Clifford Mfg Co Improvements in or relating to apparatus for deforming thin wall tubular shells
SU1176994A1 (en) * 1984-04-23 1985-09-07 Ленинградский Ордена Ленина Политехнический Институт Им.М.И.Калинина Arrangement for hydraulic stamping of hollow parts
EP0995512A2 (en) * 1998-10-08 2000-04-26 Alusuisse Technology & Management AG Method and device for sealing a hollow profile or similar workpiece in high pressure forming

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US453410A (en) * 1891-06-02 langerfeld
US701549A (en) * 1902-01-11 1902-06-03 Standard Oil Co Apparatus for shaping metal receptacles.
DE4017072A1 (en) * 1990-05-26 1991-11-28 Benteler Werke Ag METHOD FOR HYDRAULIC FORMING A TUBULAR HOLLOW BODY AND DEVICE FOR CARRYING OUT THE METHOD
JP3351290B2 (en) * 1997-04-25 2002-11-25 住友金属工業株式会社 Method and apparatus for hydraulic bulging of metal tube
US5819573A (en) * 1997-06-17 1998-10-13 Seaman; Roy C. Hydraulic forming of workpieces from sheet metal

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB544466A (en) * 1940-01-25 1942-04-14 Clifford Mfg Co Improvements in or relating to apparatus for deforming thin wall tubular shells
SU1176994A1 (en) * 1984-04-23 1985-09-07 Ленинградский Ордена Ленина Политехнический Институт Им.М.И.Калинина Arrangement for hydraulic stamping of hollow parts
EP0995512A2 (en) * 1998-10-08 2000-04-26 Alusuisse Technology & Management AG Method and device for sealing a hollow profile or similar workpiece in high pressure forming

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section PQ Week 198613, Derwent World Patents Index; Class P51, AN 1986-086482, XP002259279 *

Also Published As

Publication number Publication date
US20030010079A1 (en) 2003-01-16
DE10134321C1 (en) 2002-07-25
US6804979B2 (en) 2004-10-19
EP1275448A2 (en) 2003-01-15

Similar Documents

Publication Publication Date Title
US8348249B2 (en) Reaction device for forming equipment
EP2016290A1 (en) Procedure for the loading of a working cylinder, control module for it, working cylinder and utilization of the same
EP1700728A3 (en) Hydraulic actuation system for a convertible car roof
DE20214904U1 (en) Actuator for pedestrian safety motor vehicle bonnet lifter has gas driven piston in cylinder with ports to allow controlled braking gas flow
EP1275448A3 (en) Device for sealing the end of a tubular workpiece in an internal high pressure forming tool
EP1344949A3 (en) Valve arrangement for a positioning cylinder
DE202016008337U1 (en) Device for molding hollow parts with a complicated cross-section
EP1681486A3 (en) System and method for cooling a vehicle clutch comprising a valve device
DE20205807U1 (en) Device for plastically deforming workpieces
DE102016124422A1 (en) Hochdruckplungerpumpe and method for interrupting the operation of a fluid flow
DE102014000469A1 (en) screw compressors
DE10214033B4 (en) Spring brake cylinder
EP2527093A2 (en) Injector retractor
EP1565657A2 (en) High pressure device and method for clean room applications
DE316184C (en)
DE20216310U1 (en) Press-in
EP0554760A1 (en) Hydropneumatic pressure intensifier
DE202018102683U1 (en) Gripper module and device for carrying out a control method for such a gripper module
EP1318293A3 (en) Fuel injection system for internal combustion engine
DE10253020A1 (en) Pneumatic operating device for friction clutch has pressurized surfaces of piston and cylinder with axial recess toward opposite pressurized surface
DE2031790A1 (en) Pneumatic actuator, in particular for opening and closing, changing and determining the opening width of windows, skylights, light domes or similar cover elements
DE102018130197B3 (en) Fastening device for additional sanitary components and method for fastening additional sanitary components
DE175016C (en)
DE202017101943U1 (en) Pressure generator with two pneumatic pistons
DE102009018573A1 (en) Slave cylinder arrangement for e.g. clutch operating device, has stripping unit arranged between sealing unit and piston and comprising areas lying at inner and outer circumferences of outer body area and inner body area, respectively

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20040408

AKX Designation fees paid

Designated state(s): AT BE CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

17Q First examination report despatched

Effective date: 20040827

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20060628