EP0622132B1 - Device for and method of moulding a special steel diaphragm for vacuum insulation elements - Google Patents
Device for and method of moulding a special steel diaphragm for vacuum insulation elements Download PDFInfo
- 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
Links
- 238000009413 insulation Methods 0.000 title claims description 6
- 238000000465 moulding Methods 0.000 title description 5
- 238000000034 method Methods 0.000 title description 3
- 229910000831 Steel Inorganic materials 0.000 title 1
- 239000010959 steel Substances 0.000 title 1
- 238000003825 pressing Methods 0.000 claims description 30
- 239000012528 membrane Substances 0.000 claims description 19
- 229910001220 stainless steel Inorganic materials 0.000 claims description 16
- 239000010935 stainless steel Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 5
- 229920002994 synthetic fiber Polymers 0.000 claims 2
- 238000007373 indentation Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Images
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)
Description
Die Erfindung betrifft ein Preßwerkzeug zur Verformung von Edelstahlmembranen für Vakuum-Wärmeisolations-Elemente in einer Presse, das eine einen Preßdruck aufnehmende Grundplatte und eine in Richtung auf diese verfahrbaren und Preßdruck ausübenden Deckplatte aufweist, wobei benachbart zu einem zu verformenden Rohling ein die Preßkräfte in Querrichtung zur Bewegungsrichtung der Deckplatte umlenkender Gummistempel vorgesehen ist. Die Erfindung betrifft ferner eine Verwendung eines Preßwerkzeuges zur Verformung von Edelstahlmembranen für Vakuum-Isolations-Elemente. Derartige Preßwerkzeuge sind in der FR-A-2 270 025 und in der DE-C-540 246 beschrieben, allerdings nicht zur Herstellung von Membranen, sondern von Fahrzeugfelgen und WellrohrenThe 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
Wärmeisolations-Elemente sind ausführlich in der Europäischen Patentschrift EP-B-0 263 928 beschrieben. Sie sind in der Regel plattenfömige metallische Vakuumhüllen, deren stirnseitige Randbereiche Wärmenbrücken zwischen Bodenblech und Deckblech ausbilden. Um die durch diese Wärmebrücken erzeugten Verluste zu minimieren, reduziert man die Wanddicke der Hülle in diesem Bereich und verlängert die Verbindung zwischen Bodenblech und Deckblech, in der man stirnseitige Membranen als umlaufenden Faltenbalg ausführt.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.
Um das Vakuum an den Stirnseiten sicherzustellen, ist es erforderlich, daß die Edelstahlmembranen aus ringförmig verschweißten Edelstahl-Metallstreifen hergestellt werden. Fertigungstechnisch hat es sich allerdings als außerordentlich schwierig erwiesen, derartige faltenbalgartige Membranen mit der erforderlichen Präzision herzustellen. Insbesondere die Verwendung von Rollformern führte nicht zu dem gewünschten Ergebnis, da auch die Randbreiche der Edelstahlmembranen glatt und homogen ausgebildet sein müssen, um ohne Fehlstellen mit den Platten der Wärmeisolations-Elemente verbunden werden zu können.To ensure the vacuum on the end faces, it is necessary that the stainless steel membranes made of ring-welded stainless steel metal strips will. In terms of manufacturing technology, however, it has proven to be extremely difficult to produce such bellows-type membranes with the required precision. In particular, the use of roll formers did not lead to the desired Result, since the edge areas of the stainless steel membranes are smooth and homogeneous must be trained to be without defects with the panels of the heat insulation elements to be able to be connected.
Aufgabe der vorliegenden Erfindung ist es daher, ein Preßwerkzeug aus der eingangs genannten Art für eine Verwendung der eingangs genannten Art zu schaffen, mit dem einfach, präzise und kostengünstig Edelstahlmembranen hergestellt werden können.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.
Diese Aufgabe wird durch die Kombination der Merkmale gemäß
Anspruch 1 gelöst.This task is accomplished by combining the
Durch die Verwendung des Gummistempels, der aufgrund seiner Elastizität, seine Volumenkonstanz bei der Verformbarkeit den aus einem Edelstalllstreifen zu einem Endlosband verschweißten Rohling in seinem ganzen Umfang gleichzeitig verformt, kommt man ohne komplizierte und mechanische aufwendige Preßvorrichtungen aus. Der Gummistempel ist vergleichsweise preiswert in der Herstellung und kann viele Male verwendet werden. Es ist auch möglich, ohne Änderung des Gummistempels unterschiedlich geformte Formmatrizen zu verwenden.By using 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.
Weitere Einzelheiten der vorliegenden Erfindung ergeben sich aus der nachfolgenden ausführlichen Beschreibung und den beigefügten Zeichnungen, in denen eine bevorzugte Ausführungsform der Erfindung beispielsweise veranschaulicht ist.Further details of the present invention result from the following detailed description and the accompanying drawings, in which a preferred Embodiment of the invention is illustrated for example.
In den Zeichnungen zeigen:
- Figur 1:
- Eine schematische Darstellung eines Preßwerkzeuges in teilweise geschnit tener Seitenansicht;
- Figur 2:
- Eine Draufsicht auf eine Formmatrize oberhalb eines Pressentisches;
- Figur 3:
- Einen Querschnitt durch eine Formmatrize mit aufgeformter Membrane.
- Figure 1:
- A schematic representation of a press tool in a partially cut side view;
- Figure 2:
- A top view of a form die above a press table;
- Figure 3:
- A cross section through a form die with an overmolded membrane.
Das Preßwerkzeug zur Verformung von Edelstahlmembranen besteht im wesentlichen
aus einer einen Preßdruck aufnehmenden Grundplatte 1 und einer in Richtung auf diese
verfahrbaren und Preßdruck ausübenden Deckplatte 12, wobei in der benachbart zu
einem zu verformenden Rohling 3 auf seiner einen Seite eine Formmatrize 4 und auf
der gegenüberliegenden Seiten des Rohlings 3 ein Gummistempel 5 vorgesehen sind.
Die Formmatrize 4 weist eine einer herzustellenden Edelstahlmembran entsprechende
faltenbalgartige Oberfläche 6 auf, die auf dem Rohling 3 bei seiner Verformung aufgepreßt
wird. Der Gummistempel 5 weist eine zentrale Preßfläche 7 auf, die dem
Rohling 3 zugekehrt ist und der jeweils zwei entgegen der Preßrichtung abgeschrägten
Flankenflächen 8, 9 benachbart sind. Diese Flankenflächen 8, 9 weisen jeweils
größere Abmessungen auf, als die zentrale Preßfläche 7 des Gummistempels 5.The pressing tool for deforming stainless steel membranes essentially consists
from a
Die Formmatrize 4 ist in Bewegungsrichtung des Preßstempels zwischen einer unteren
Matrizenträgerplatte 10 und einer oberen Matrizenabdeckplatte 11 eingespannt. Zwischen
der Grundplatte 1 und der Matrizenträgerplatte 10 sowie zwischen der Matrizenabdeckplatte
11 und der von dem Preßstrempel 2 beaufschlagten Deckplatte 12
erstrecken sich Gummifedern 13, 14, über die die Matrizenträgerplatte 10, die Matrizenabdeckplatte
11 und die zwischen ihnen angeorndeten Formmatrizen 4 bei einem
Preßvorgang, in ihrer Lage gehaltert werden, wenn die Deckplatte 12 in Richtung auf
die Grundplatte 1 herabgedrückt wird. Die Grundplatte 1 und die Deckplatte 12 sind
jeweils mit aufeinander gerichteten Stempeln versehen, zwischen denen und jeweils
einer Auflagerfläche 17, 18, des Gummistempels 5 sich Preßkräfte übertragende Platinen
19, 20 erstrecken. Diese Platinen 19, 20 sind aus einem volumenkostanten elastischen
Kunststoff, der beispielsweise ein Urelastkunststoff sein kann, gefertigt. Die
Platinen 19, 20, sind in horizontalen Richtungen an der Matrizenträgerplatte 10, der
Matrizenabdeckplatte 11 und einem diesem gegenüberliegenden Abstützblock 21 abgestützt.
Auch der Gummistempel 5 ist an seiner dem Rohling 3 abgewandten Rückfläche
22 an dem Abstützblock 21 abgestützt. Zwischen dem Gummistempel 5 im Bereich
der zentralen Preßfläche 7 und der Flankenfläche 8, 9 und der Oberfläche 6 der
Formmatrize 4 ist ein Hohlraum 23 ausgebildet, der bei Beendigung eines Preßvorganges
vollständig von dem Gummistempel 5 und der Edelstahlmembrane 24 ausgefüllt
ist. Der Rohling 3 besteht aus einem zu einem Endlosstreifen verschweißten
Edelstahlblechstreifen, der vorzugsweise eine Stärke von 0,15 mm aufweist. Diese
Materialstärke hat sich als einerseits hinreichend stabil erwiesen und ist andererseits
durch Einsatz des Gummistempels 5 ausreichend präzise verformbar.The form die 4 is in the direction of movement of the ram between a lower one
Die
Die erfindungsgemäße Verwendung wird mit dem erfindungsgemäßen Preßwerkzeug wie folgt durchgeführt:The inventive use is with the press tool according to the invention carried out as follows:
Nachdem zunächst der Rohling 3 in den Hohlraum 23 eingelegt und die Vorrichtung
für ihren Einsatz zusammengesetzt ist, übt der Preßstempel 2 Druckkräfte auf die
Deckplatte 12 aus, wodurch die Deckplatte 12 in Richtung auf die Grundplatte 1 bewegt
wird. Dabei werden die Stempel 15, 16 ebenfalls aufeinander zubewegt und die
Gummifedern 13, 14 zusammengepreßt, so daß die Matrizenträgerplatte 10 und die
Matrizenabdeckplatte 11 die Formmatrize 4 festlegen. Über die Platinen 19, 20 werden
die Druckkäfte in die Gummistempel 5 eingeleitet. Da dieser auf seiner der
Formmatrize 4 abgewandten Rückfläche 22 so abgestützt ist, so daß das Gummimaterial
des Gummistempels 5 in diese Richtung nicht ausweichen kann, wird die zentrale
Preßfläche 7 des Gummistempels 5 in den Hohlraum 23 vorgeschoben und preßt
bei fortschreitender Druckbeaufschlagung den Rohling 3 auf die faltenbalgartige
Oberfläche 6 der Formmatrize 4. Die Randstreifen 25 des Rohlings 3 legen sich zunächst
an die Flankenflächen 8, 9 des Gummistempels 5 an. Bei weiterer Druckbeaufschlagung
wird jedoch das Gummimaterial des Gummistempels 5 soweit in den Hohlraum
23 hineingepreßt, daß die Randstreifen 25 von den Flankenflächen 8, 9 auf die
Seitenflächen 26, 27 der Formmatrize 4 aufgepreßt werden und der Hohlraum 23,
vollständig von dem Gummimaterial des Gummistempels 5 und der dann fertiggestellten
Edelstahlmembrane 24 ausgefüllt ist. Nach Beendigung der Druckbeaufschlagung
gibt der Gummistempel 5 den Hohlraum 23 wieder frei, so daß dieser geöffnet und die
Edelstahlmembrane 24 entnommen werden kann.After the blank 3 is first inserted into the
Claims (8)
- A press tool for forming stainless steel membranes for vacuum thermal insulation elements in a press which comprises a baseplate (1) which absorbs a pressing pressure and a top plate (12) which can travel in a direction towards the baseplate and which exerts a pressing pressure, wherein a rubber plunger (5), which deflects the pressing forces in directions transverse to the direction of movement of the top plate (12), is provided adjacent to a blank (3) to be formed, characterised in that the blank (3) is disposed between the rubber plunger (5) and a forming die (4) which forms a negative mould, and that the forming die (4) has a bellows-like surface (6) which corresponds to a stainless steel membrane to be produced and on to which the blank (3) is pressed after or during the forming thereof, wherein the rubber plunger (5) has a central pressing face (7) which faces the blank (3) and to which two flank faces (8, 9) are adjacent, which are each bevelled in the opposite direction to the direction of pressing and which each have dimensions larger than the central pressing face (7), and a cavity (23) is formed between the rubber plunger (5) and the surface (6) of the forming die (4), which cavity is completely filled by the rubber material of the rubber plunger (5) and by the finished stainless steel membrane (24) on the completion of a pressing operation.
- A press tool according to claim 1, characterised in that the forming die (4) is clamped, in the directions of movement of the top plate (12), between a lower die support plate (12) and an upper die cover plate (11).
- A press tool according to claim 2, characterised in that rubber springs (13, 14) extend between the baseplate (1) and the die support plate (10) and between the die cover plate (11) and the top plate (12) which is acted upon by the press ram (2), via which rubber springs the die support plate (10) and the die cover plate (11) are held in their positions during a pressing operation.
- A press tool according to claims 1 to 3, characterised in that the baseplate (1) and the top plate (12) are provided with mutually facing rams (15, 16), between which and a bearing face (17, 18) of the rubber plunger (5) in each case there are platens (19, 20) which transmit pressing forces.
- A press tool according to claim 4, characterised in that the platens (19, 20) consist of a constant-volume elastic synthetic material, preferably an urelast synthetic material.
- A press tool according to claims 3 to 5, characterised in that the platens (19, 20) are supported in horizontal directions on the die support plate (10), on the die cover plate (11) and on a support block (21) facing these.
- A press tool according to claim 6, characterised in that on its back face (22) remote from the blank (3) the rubber plunger (5) is supported on the support block (21).
- The use of the press tool according to claims 1 to 7 for forming stainless steel membranes, characterised in that the pressing forces exerted by the press ram (2) are deflected, via a rubber plunger (5), in directions transverse to the directions of movement of the press ram (2), wherein the deflected pressing forces are first introduced by the central pressing face (7) of the rubber plunger (5) into the blank (3) and the latter is pressed into the bellows-like indentations in the surface (6) of the forming die (4), and the edge strips (25) of the blank (3) which are not acted upon by the central pressing face (7) of the rubber plunger (22) are first deformed towards the flank faces (8, 9) of the rubber plunger (22) and then, on the further application of pressure, are laid by said flank faces round outer faces (26, 27) of the forming die (4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4309678 | 1993-03-25 | ||
| DE4309678A DE4309678A1 (en) | 1993-03-25 | 1993-03-25 | Device and method for deforming stainless steel membranes for vacuum thermal insulation elements |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0622132A1 EP0622132A1 (en) | 1994-11-02 |
| EP0622132B1 true EP0622132B1 (en) | 1998-03-18 |
Family
ID=6483805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94100555A Expired - Lifetime EP0622132B1 (en) | 1993-03-25 | 1994-01-15 | Device for and method of moulding a special steel diaphragm for vacuum insulation elements |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5490407A (en) |
| EP (1) | EP0622132B1 (en) |
| DE (2) | DE4309678A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 (en) * | 1999-07-06 | 2002-07-25 | 한국과학기술연구원 | Dieless forming equipments |
| US6578399B1 (en) * | 1999-09-09 | 2003-06-17 | Northrop Grumman Corporation | Single-die modularized, reconfigurable honeycomb core forming tool |
| DE10164834B4 (en) * | 2001-12-04 | 2004-09-16 | Roche Diagnostics Gmbh | Holder for samples and complete film for holding samples |
| US6865917B2 (en) * | 2003-03-27 | 2005-03-15 | Ford Motor Company | Flanging and hemming process with radial compression of the blank stretched surface |
| JP2005118828A (en) * | 2003-10-17 | 2005-05-12 | Nakamura Mfg Co Ltd | Method for forming projecting shaft in electronic storage device |
| 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 (en) * | 2012-04-27 | 2016-11-02 | 内山工業株式会社 | Cover manufacturing method and press die used therefor |
| CN102729290A (en) * | 2012-07-06 | 2012-10-17 | 苏州维艾普新材料有限公司 | Machining device and machining method of hole manufactured on vacuum insulating plate |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE540246C (en) * | 1929-01-18 | 1931-12-14 | Meyer Keller & Cie Akt Ges Met | Process for the production of highly elastic corrugated or spring tubes |
| DE863641C (en) * | 1945-12-27 | 1953-01-19 | Metallschlauchfabrik A G | Process for the production of highly elastic springs |
| 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 (en) * | 1986-10-08 | 1988-04-21 | Messerschmitt Boelkow Blohm | JOINT INSULATION FOR VACUUM HEAT ISOLATION ELEMENTS |
| DE3817707A1 (en) * | 1988-05-25 | 1989-11-30 | Guenter Otto | METHOD AND DEVICE FOR DEFORMING MATERIAL LIKE HOLLOW PROFILES, TUBES, ETC. |
| FR2677166B1 (en) * | 1991-05-30 | 1993-08-06 | Alsthom Gec | METHOD OF MANUFACTURING A CONTACT TULIP AND CONTACT TULIP CARRIED OUT ACCORDING TO THE METHOD. |
-
1993
- 1993-03-25 DE DE4309678A patent/DE4309678A1/en not_active Withdrawn
-
1994
- 1994-01-15 DE DE59405447T patent/DE59405447D1/en not_active Expired - Fee Related
- 1994-01-15 EP EP94100555A patent/EP0622132B1/en not_active Expired - Lifetime
- 1994-03-22 US US08/216,102 patent/US5490407A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0622132A1 (en) | 1994-11-02 |
| DE59405447D1 (en) | 1998-04-23 |
| DE4309678A1 (en) | 1994-09-29 |
| US5490407A (en) | 1996-02-13 |
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