EP1475168A1 - Dispositif d'obturation des extrémités d'un profilé creux à utiliser dans un procédé de formage à haute pression interne - Google Patents

Dispositif d'obturation des extrémités d'un profilé creux à utiliser dans un procédé de formage à haute pression interne Download PDF

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Publication number
EP1475168A1
EP1475168A1 EP04005551A EP04005551A EP1475168A1 EP 1475168 A1 EP1475168 A1 EP 1475168A1 EP 04005551 A EP04005551 A EP 04005551A EP 04005551 A EP04005551 A EP 04005551A EP 1475168 A1 EP1475168 A1 EP 1475168A1
Authority
EP
European Patent Office
Prior art keywords
sealing body
clamping
sealing
housing
clamping insert
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Withdrawn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
EP04005551A
Other languages
German (de)
English (en)
Inventor
Klaus Prof. Dr.-Ing. Siegert
Aribert Prof. Dr.-Ing. Schwager
Markan Lovric
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.)
Forschungsgesellschaft Umformtechnik mbH
Original Assignee
Forschungsgesellschaft Umformtechnik mbH
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 Forschungsgesellschaft Umformtechnik mbH filed Critical Forschungsgesellschaft Umformtechnik mbH
Publication of EP1475168A1 publication Critical patent/EP1475168A1/fr
Withdrawn legal-status Critical Current

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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

Definitions

  • the invention relates to a device for sealing the Ends of a hollow profile in hydroforming after Preamble of the first claim.
  • a device for Internal high pressure forming of a hollow body is known, one Opening of a hollow body by means of an elastic Sealing body is closed.
  • the sealing body will via a pressure body with the effective internal pressure applied. It also acts on the pressure body force-generating element in the form of a spring which over a Drawbar the contact force between the pressure and sealing body further increased, whereby the pressure body against the Sealing body is clamped.
  • the contact surface between the sealing and The pressure body is wedge-shaped.
  • the object of the invention is a device for sealing to develop the ends of a hollow profile, with which durability and tightness at high axial tensile stresses the connection is guaranteed.
  • the device for sealing the ends of a hollow profile in hydroforming has a sealing body which the opening of a hollow body is closed.
  • the Clamping insert has one or more grooves into which the Pipe wall over the sealing body under pressure is malleable.
  • the clamping insert is axial in at least two Parts divided and seated in a housing, the housing is removable from the clamping insert. The parts of the Clamping insert are after removing the housing from the Removable sealing body.
  • the sealing body is elastic executed and the grooves are made by an elastic Deformation of the sealing body shaped.
  • the Sealing body which has a pressure disc and a Drawbar is connected to a piston / cylinder unit, elastically deformed, whereby the clamping bead is formed and the pipe is clamped.
  • the housing and the piston / cylinder unit are detachable connected to each other and form an assembly, whereby the Clamp insert can be easily removed.
  • the sealing body is rigid executed and the grooves in the clamping insert are by means of hydraulic or pneumatic pressure.
  • the sealing body has at least one annular groove, which on Grooves have holes in the radial direction.
  • sealing body has at least one bore in Longitudinal direction. The sealing body is on the pipe facing end connected to the housing, whereby these are separated from the tube / clamping insert unit can.
  • Fig. 1 shows the sealing unit consisting of elastic DK sealing body, GE housing, ZK cylinder / piston unit, nut M, tension rod ZS, thrust washer DS, clamping insert KE with one circumferential groove N in the middle area and tube R.
  • Fig.2 shows the sealing unit consisting of rigid sealing body DK, which has an annular groove RN, at least one radial hole BR and an axial bore BA opening into this, as well as a Longitudinal bore (through bore) LB has.
  • a Clamping unit KE has a circumferential groove N in the middle area on. The groove is sealed on both sides by seals D. That sits between the sealing body DK and the clamping insert KE End of tube R.
  • the sealing adapter In order to seal the pipe R to be formed from the environment, becomes a two-part KE clamping insert at the pipe ends attached.
  • the unit tube R / clamping insert KE is then in the housing GE of the sealing adapter is inserted, the Clamping and thus sealing the pipe R, through which Characterization of the grooves N in the KE clamping insert and thus the Formation of clamping beads takes place.
  • the sealing adapter has a sealing body DK, which is elastically deformable (Fig.1).
  • the Sealing body DK is by means of a pressure plate DS, which over a pull rod ZS is connected to a cylinder / piston ZK elastically deformable.
  • the sealing body DK is rigid (FIG. 2) and is permanently connected to the housing GE on the end face.
  • the sealing body DK has an annular groove RN, in which there is a bore or bores in the radial direction RB at the bottom of the groove, which are connected to an axial bore BA and which serve to supply pressure medium into the groove N.
  • the pressure medium is fed into the tube R via a longitudinal bore / through bore LB.
  • the clamping insert KE which has a circumferential groove N for a clamping bead on the side facing the pipe, is fastened to the pipe ends of the pipe R and preloaded radially and then inserted into the housing GE.
  • the clamping bead is formed over the ring groove RN and the tube is clamped in its position.
  • greater axial tensile stresses can be transmitted to the tube, for example when the tube is pre-bent, without the tube being pulled out of the device for sealing the ends of a hollow profile.
  • the pressure medium for internal high pressure forming is fed into the pipe via the through bore / longitudinal bore LB.
  • the pressure chamber is sealed using seals D (Fig. 2).
  • the housing is GE for both versions removed from the material to be formed by axial pull, whereby the two-part clamping insert KE can be removed from tube R.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Clamps And Clips (AREA)
EP04005551A 2003-03-12 2004-03-09 Dispositif d'obturation des extrémités d'un profilé creux à utiliser dans un procédé de formage à haute pression interne Withdrawn EP1475168A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003111180 DE10311180B3 (de) 2003-03-12 2003-03-12 Vorrichtung zum Abdichten der Enden eines Hohlprofils beim Innenhochdruckumformen
DE10311180 2003-03-12

Publications (1)

Publication Number Publication Date
EP1475168A1 true EP1475168A1 (fr) 2004-11-10

Family

ID=30128906

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04005551A Withdrawn EP1475168A1 (fr) 2003-03-12 2004-03-09 Dispositif d'obturation des extrémités d'un profilé creux à utiliser dans un procédé de formage à haute pression interne

Country Status (2)

Country Link
EP (1) EP1475168A1 (fr)
DE (1) DE10311180B3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3756781A4 (fr) * 2018-02-23 2021-03-24 Sumitomo Heavy Industries, Ltd. Dispositif de formage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0995512A2 (fr) * 1998-10-08 2000-04-26 Alusuisse Technology & Management AG Méthode et dispositif pour étancher un profilé creux ou similaire pendant le formage à haute pression
DE19909927A1 (de) * 1999-03-06 2000-09-14 Audi Ag Vorrichtung zum Innenhochdruckumformen eines Hohlkörpers
EP1170069A1 (fr) * 2000-07-05 2002-01-09 Alcan Technology & Management AG Dispositif de formage par haute pression interne d' un profilé creux
DE10043024A1 (de) * 2000-09-01 2002-03-21 Audi Ag Verfahren zum Innenhochdruckumformen eines Hohlprofiles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0995512A2 (fr) * 1998-10-08 2000-04-26 Alusuisse Technology & Management AG Méthode et dispositif pour étancher un profilé creux ou similaire pendant le formage à haute pression
DE19909927A1 (de) * 1999-03-06 2000-09-14 Audi Ag Vorrichtung zum Innenhochdruckumformen eines Hohlkörpers
EP1170069A1 (fr) * 2000-07-05 2002-01-09 Alcan Technology & Management AG Dispositif de formage par haute pression interne d' un profilé creux
DE10043024A1 (de) * 2000-09-01 2002-03-21 Audi Ag Verfahren zum Innenhochdruckumformen eines Hohlprofiles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3756781A4 (fr) * 2018-02-23 2021-03-24 Sumitomo Heavy Industries, Ltd. Dispositif de formage
US11491529B2 (en) 2018-02-23 2022-11-08 Sumitomo Heavy Industries, Ltd. Forming device

Also Published As

Publication number Publication date
DE10311180B3 (de) 2004-02-12

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