EP0622132B1 - Dispositif et procédé de formage d'un diaphragme en acier spécial pour éléments d'isolation à vide - Google Patents

Dispositif et procédé de formage d'un diaphragme en acier spécial pour éléments d'isolation à vide Download PDF

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Publication number
EP0622132B1
EP0622132B1 EP94100555A EP94100555A EP0622132B1 EP 0622132 B1 EP0622132 B1 EP 0622132B1 EP 94100555 A EP94100555 A EP 94100555A EP 94100555 A EP94100555 A EP 94100555A EP 0622132 B1 EP0622132 B1 EP 0622132B1
Authority
EP
European Patent Office
Prior art keywords
die
pressing
blank
rubber
rubber plunger
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 - Lifetime
Application number
EP94100555A
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German (de)
English (en)
Other versions
EP0622132A1 (fr
Inventor
Ingolf Doose
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.)
Umformtechnik Stade GmbH
Original Assignee
Umformtechnik Stade 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 Umformtechnik Stade GmbH filed Critical Umformtechnik Stade GmbH
Publication of EP0622132A1 publication Critical patent/EP0622132A1/fr
Application granted granted Critical
Publication of EP0622132B1 publication Critical patent/EP0622132B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/10—Stamping using yieldable or resilient pads
    • B21D22/105—Stamping using yieldable or resilient pads of tubular products

Definitions

  • the invention relates to a pressing tool for deforming stainless steel membranes for vacuum heat insulation elements in a press, which is a pressing pressure receiving base plate and a movable towards this and pressing pressure exercising cover plate, being adjacent to a blank to be deformed a deflecting the pressing forces in the transverse direction to the direction of movement of the cover plate Rubber stamp is provided.
  • the invention further relates to the use of a Pressing tool for deforming stainless steel membranes for vacuum insulation elements.
  • Such pressing tools are in FR-A-2 270 025 and in DE-C-540 246, but not for the production of membranes, but of Vehicle rims and corrugated pipes
  • Thermal insulation elements are detailed in the European patent EP-B-0 263,928. They are usually plate-shaped metallic vacuum envelopes, the front edge areas of thermal bridges between the floor panel and Form cover plate. To minimize the losses caused by these thermal bridges, reduce the wall thickness of the shell in this area and extend the Connection between the floor panel and the cover panel, in which there are front membranes as a circumferential bellows.
  • the object of the present invention is therefore a press tool from the beginning to create the type mentioned for use of the type mentioned at the beginning, with the stainless steel membranes can be manufactured simply, precisely and inexpensively.
  • the rubber stamp which due to its elasticity, its Volume consistency in the formability of the one stable strip into one Continuous band welded blank deformed in its entire circumference at the same time, one gets along without complicated and mechanically complex pressing devices.
  • the rubber stamp is comparatively inexpensive to manufacture and can do many Times. It is also possible without changing the rubber stamp to use differently shaped form matrices.
  • the pressing tool for deforming stainless steel membranes essentially consists from a base plate 1 receiving a pressure and one in the direction of this movable and pressing pressure exerting cover plate 12, in which adjacent to a blank 3 to be deformed on one side a molding die 4 and a rubber stamp 5 are provided on the opposite sides of the blank 3.
  • the molding die 4 has a stainless steel membrane to be produced bellows-like surface 6, which is pressed onto the blank 3 during its deformation becomes.
  • the rubber stamp 5 has a central pressing surface 7, which Blank 3 is facing and the two each bevelled against the pressing direction Flank surfaces 8, 9 are adjacent. These flank surfaces 8, 9 each have Larger dimensions than the central pressing surface 7 of the rubber stamp 5.
  • the form die 4 is in the direction of movement of the ram between a lower one Die carrier plate 10 and an upper die cover plate 11 clamped. Between the base plate 1 and the die carrier plate 10 and between the die cover plate 11 and the cover plate 12 acted upon by the pressing die 2 extend rubber springs 13, 14, over which the die support plate 10, the die cover plate 11 and the mold dies 4 arranged between them at one Pressing process, be held in position when the cover plate 12 in the direction of the base plate 1 is pressed down.
  • the base plate 1 and the cover plate 12 are each with stamps facing each other, between which and each a support surface 17, 18, the rubber stamp 5 transferring pressure plates 19, 20 extend.
  • These boards 19, 20 are made of a volume-constant elastic Plastic, which can be, for example, an Urelast plastic.
  • the Boards 19, 20 are in horizontal directions on the die carrier plate 10, the Matrix cover plate 11 and a support block 21 opposite this supported.
  • the rubber stamp 5 is also on its rear surface facing away from the blank 3 22 supported on the support block 21. Between the rubber stamp 5 in the area the central pressing surface 7 and the flank surface 8, 9 and the surface 6 of the Forming die 4, a cavity 23 is formed, which is at the end of a pressing process completely filled by the rubber stamp 5 and the stainless steel membrane 24 is.
  • the blank 3 consists of a welded into an endless strip Stainless steel sheet strip, which preferably has a thickness of 0.15 mm. This Material strength has proven to be sufficiently stable on the one hand and is on the other hand sufficiently deformable by using the rubber stamp 5.
  • the press ram exerts 2 compressive forces on the Cover plate 12, whereby the cover plate 12 moves in the direction of the base plate 1 becomes.
  • the stamp 15, 16 are also moved towards each other and the Rubber springs 13, 14 compressed so that the die carrier plate 10 and the Die cover plate 11 define the die 4.
  • Be over the boards 19, 20 the pressure forces are introduced into the rubber stamp 5. Since this on his the Forming die 4 facing back surface 22 is supported so that the rubber material the rubber stamp 5 can not evade in this direction, the central Pressing surface 7 of the rubber stamp 5 is pushed into the cavity 23 and pressed with increasing pressure, the blank 3 on the bellows-like Surface 6 of the molding die 4.
  • the edge strips 25 of the blank 3 initially lay down to the flank surfaces 8, 9 of the rubber stamp 5. With further pressurization however, the rubber material of the rubber stamp 5 so far into the cavity 23 pressed in that the edge strips 25 of the flank surfaces 8, 9 on the Side surfaces 26, 27 of the molding die 4 are pressed on and the cavity 23, completely of the rubber material of the rubber stamp 5 and then finished Stainless steel membrane 24 is filled. After pressurization is complete the rubber stamp 5 releases the cavity 23 again, so that it opens and the Stainless steel membrane 24 can be removed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Press Drives And Press Lines (AREA)

Claims (8)

  1. Outil de presse pour le formage dans une presse de membranes en acier spécial destinées à des éléments d'isolation thermique à vide, comportant une semelle (1) qui reçoit une pression de formage et une plaque supérieure (12) mobile en direction de celle-ci et exerçant la pression de formage, un poinçon en caoutchouc (5) qui dévie les forces de pression dans des directions transversales par rapport à la direction de déplacement de la plaque supérieure (12) étant prévu dans la voisinage d'une ébauche (3) à façonner, caractérisé par le fait que l'ébauche (4) est placée entre le poinçon en caoutchouc (5) et une matrice (4) formant une empreinte négative et par le fait que la matrice (4) présente une surface (6) en forme de soufflet qui correspond à une membrane en acier spécial à façonner et sur laquelle l'ébauche (3) est appliquée après et pendant l'opération de formage, le poinçon en caoutchouc (5) présentant une surface de formage (7) centrale tournée vers l'ébauche (3) au voisinage de laquelle sont disposées deux surfaces de flanc (8,9) inclinées dans la direction opposée à la direction de formage, qui présentent des dimensions supérieures à celle de la surface centrale (7) et une cavité (23) étant formée entre le poinçon en caoutchouc (5) et la surface (6) de la matrice (4), laquelle cavité à la fin d'un processus de formage est complètement remplie par le caoutchouc du poinçon en caoutchouc (5) et la membrane en acier spécial terminée (24).
  2. Outil de presse selon la revendication 1, caractérisé par le fait que la matrice (4), dans la direction de déplacement de la plaque supérieure (12), est bridée entre une plaque support de matrice (10) inférieure et une plaque de fermeture de matrice (11) supérieure.
  3. Outil de presse selon la revendication 2, caractérisé par le fait que des éléments élastiques en caoutchouc (13, 14) par l'intermédiaire desquels la plaque support de matrice (10) et la plaque de fermeture de matrice (11) sont maintenues en position lors d'une opération de formage, sont disposées entre la semelle (1) et la plaque support de matrice (10) ainsi qu'entre la plaque de fermeture de matrice (11) et la plaque supérieure (12) sollicitée par le coulisseau de presse (2) .
  4. Outil de presse selon les revendications 1 à 3, caractérisé par le fait que la semelle (1) et la plaque supérieure (12) sont pourvues de poinçons (15, 16) tournés l'un vers l'autre entre lesquels et chaque fois une surface d'appui (17, 18) du poinçon en caoutchouc (5) sont disposées des platines (19, 20) qui transmettent les forces de formage.
  5. Outil de presse selon la revendication 4, caractérisé par le fait que les platines (19, 20) sont réalisées en un matériau élastique à volume constant, de préférence en élastomère d'uréthane.
  6. Outil de presse selon les revendications 3 à 5, caractérisé par le fait que les platines (19, 20) prennent appui dans les directions horizontales sur la plaque de support de matrice (10), la plaque de fermeture de matrice (11) et un bloc de contre-appui (21) disposé en vis-à-vis de celles-ci.
  7. Outil de presse selon la revendication 6, caractérisé par le fait que le poinçon en caoutchouc (5) sur sa face arrière (22) éloignée de l'ébauche (3) prend appui sur le bloc de contre-appui (21).
  8. Utilisation d'un outil de presse selon les revendications 1 à 7 pour le formage de membranes en acier spécial, caractérisé par le fait que les forces de formage exercées par le poinçon de presse (2) sont déviées par l'intermédiaire d'un poinçon en caoutchouc (15) dans des directions transversales à la direction de déplacement du coulisseau de presse (2), les forces de pression déviées étant d'abord transmises par la surface de formage centrale (7) du poinçon en caoutchouc (5) à l'ébauche (3) et celle-ci étant pressée dans les cavités en forme de soufflets de la surface (6) de la matrice (4) et les bandes de bord (25) de l'ébauche (3) qui ne sont pas sollicitées par la surface centrale de formage (7) du poinçon (5) se déformant tout d'abord en direction des surfaces de flanc (8, 9) du poinçon en caoutchouc (5) puis s'appliquant autour de surfaces extérieures (26, 27) de la matrice (4) lorsque la pression est maintenue.
EP94100555A 1993-03-25 1994-01-15 Dispositif et procédé de formage d'un diaphragme en acier spécial pour éléments d'isolation à vide Expired - Lifetime EP0622132B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4309678A DE4309678A1 (de) 1993-03-25 1993-03-25 Vorrichtung und Verfahren zur Verformung von Edelstahlmembranen für Vakuum-Wärmeisolations-Elemente
DE4309678 1993-03-25

Publications (2)

Publication Number Publication Date
EP0622132A1 EP0622132A1 (fr) 1994-11-02
EP0622132B1 true EP0622132B1 (fr) 1998-03-18

Family

ID=6483805

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94100555A Expired - Lifetime EP0622132B1 (fr) 1993-03-25 1994-01-15 Dispositif et procédé de formage d'un diaphragme en acier spécial pour éléments d'isolation à vide

Country Status (3)

Country Link
US (1) US5490407A (fr)
EP (1) EP0622132B1 (fr)
DE (2) DE4309678A1 (fr)

Families Citing this family (12)

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US6029486A (en) * 1998-04-23 2000-02-29 Amada Metrecs Company, Limited Forming method, forming tools and elastic punch
US5901593A (en) * 1998-01-26 1999-05-11 Northrop Grumman Corporation Making hydropress formblocks and dies utilizing stereolithography and liquid molding compounds
KR100345288B1 (ko) * 1999-07-06 2002-07-25 한국과학기술연구원 무금형 성형장치
US6578399B1 (en) * 1999-09-09 2003-06-17 Northrop Grumman Corporation Single-die modularized, reconfigurable honeycomb core forming tool
DE10164834B4 (de) * 2001-12-04 2004-09-16 Roche Diagnostics Gmbh Aufnahme für Proben und Komplettfolie zum Aufnehmen von Proben
US6865917B2 (en) * 2003-03-27 2005-03-15 Ford Motor Company Flanging and hemming process with radial compression of the blank stretched surface
JP2005118828A (ja) * 2003-10-17 2005-05-12 Nakamura Mfg Co Ltd 電子記憶装置の突軸形成方法
US9352373B2 (en) 2007-06-01 2016-05-31 The University Of Queensland Assembly and method for press forming a deformable material
US8062012B2 (en) * 2007-06-05 2011-11-22 Metaldyne, Llc Elastomeric seal sizer
US8683836B2 (en) * 2011-07-29 2014-04-01 Ford Global Technologies, Llc Method and apparatus for forming sharp styling lines on metal panels
JP6021050B2 (ja) * 2012-04-27 2016-11-02 内山工業株式会社 カバーの製造方法及びこれに用いるプレス型
CN102729290A (zh) * 2012-07-06 2012-10-17 苏州维艾普新材料有限公司 一种真空绝热板上制孔的加工装置及其加工方法

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DE540246C (de) * 1929-01-18 1931-12-14 Meyer Keller & Cie Akt Ges Met Verfahren zur Herstellung von hochelastischen Well- oder Federrohren
DE863641C (de) * 1945-12-27 1953-01-19 Metallschlauchfabrik A G Verfahren zur Herstellung von hochelastischen Federkoerpern
US3564884A (en) * 1968-08-20 1971-02-23 Battelle Development Corp Deformable die apparatus for tube drawing
GB1329239A (en) * 1970-09-17 1973-09-05 Reyrolle Parsons Ltd Expansion joints
AU7082874A (en) * 1973-07-06 1976-01-08 Dunlop Ltd Die presses
US4723430A (en) * 1986-02-18 1988-02-09 Adolph Coors Company Apparatus and method for forming a surface configuration on a can body
DE3634347A1 (de) * 1986-10-08 1988-04-21 Messerschmitt Boelkow Blohm Fugenisolation fuer vakuum-waermeisolationselemente
DE3817707A1 (de) * 1988-05-25 1989-11-30 Guenter Otto Verfahren und vorrichtung zum verformen von material wie hohlprofilen, rohren usw.
FR2677166B1 (fr) * 1991-05-30 1993-08-06 Alsthom Gec Procede de fabrication d'une tulipe de contacts et tulipe de contacts realisee selon le procede.

Also Published As

Publication number Publication date
DE4309678A1 (de) 1994-09-29
US5490407A (en) 1996-02-13
DE59405447D1 (de) 1998-04-23
EP0622132A1 (fr) 1994-11-02

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