EP1523388B1 - Dispositif de maintien en position fermee - Google Patents

Dispositif de maintien en position fermee Download PDF

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Publication number
EP1523388B1
EP1523388B1 EP03762527A EP03762527A EP1523388B1 EP 1523388 B1 EP1523388 B1 EP 1523388B1 EP 03762527 A EP03762527 A EP 03762527A EP 03762527 A EP03762527 A EP 03762527A EP 1523388 B1 EP1523388 B1 EP 1523388B1
Authority
EP
European Patent Office
Prior art keywords
tensioning
accordance
forming die
mold
retaining
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
EP03762527A
Other languages
German (de)
English (en)
Other versions
EP1523388A1 (fr
Inventor
Klaus Katzfuss
Egbert Eurich
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE10230071A external-priority patent/DE10230071C1/de
Application filed by Individual filed Critical Individual
Publication of EP1523388A1 publication Critical patent/EP1523388A1/fr
Application granted granted Critical
Publication of EP1523388B1 publication Critical patent/EP1523388B1/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
    • 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
    • B21D26/039—Means for controlling the clamping or opening of the moulds
    • 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
    • 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
    • B21D26/021—Deforming sheet bodies
    • B21D26/027—Means for controlling fluid parameters, e.g. pressure or temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • B30B15/042—Prestressed frames

Definitions

  • the term "forming in a closed mold” forming method in which the force on the workpiece for forming in the interior of a per se, but at the time of the force substantially closed mold takes place and applied to the mold clamping forces regularly are larger than 3 MN.
  • Such a forming process is for example the so-called. Hydroforming with longitudinally divided molds.
  • hydroforming devices which are hydraulically driven regularly.
  • the structure of these devices is largely determined by the workpieces to be produced, wherein the original molding is in particular a tubular hollow body.
  • the power transmission to the pipe ends serving master cylinder are either standing or lying, in particular in the direction of the output pipe axis against each other acting arranged.
  • One of these cylinders is usually hollow drilled and has a high pressure port which is regularly connected by a pipe connection to the pressure booster.
  • the mold is formed at least in two parts.
  • a part of the tool is firmly attached to the machine table in a two-part mold, while the other is driven and according to the Operating cycle performs an opening and closing movement.
  • the devices can optionally accommodate longitudinally or transversely divided forming tools, with clamping forces that are greater than 3 MN usually using longitudinally divided shaping tools. The economy of these devices is often only at high volumes, ie in particular short cycle times given.
  • High-pressure internal forming devices having a longitudinally split mold to the tube axis are often designed as multi-column presses or frame presses.
  • the mold is arranged such that a part of the mold is moved during workpiece change from the press ram upwards.
  • During the forming of the press ram has to compensate for the force resulting from the projected workpiece surface and internal pressure for the mold and apply an at least equal force to the mold.
  • the process-related high internal pressures regularly over 1000 bar
  • the required locking forces of more than 3 MN by the steel structure of the device must be ensured, which requires relatively large heights and large assembly and operating space regularly when using multi-column presses or frame presses.
  • the device requires according to the male forces of more than 3 MN and the resulting regularly resulting high net mass a complex foundation and a high space requirement.
  • a tool change, i. in particular of the mold is technologically complex.
  • a pressing device for producing hollow workpieces made of sheet metal by cold forming under an internal hydraulic pressure, in which the moving parts of the workpiece enclosing the split mold are firmly held together during the cold forming by means of swinging locking hooks.
  • Zuhalte of about 1 MN, in particular of more than 3 MN ensure the dimensioning of the locking mechanism, in particular the locking hooks or joints that are needed to swing the locking hooks to make accordingly.
  • a casting machine with two frames, wherein the hinged frame have a closed steel edge for receiving a two-part mold.
  • the frames are only opened for the purpose of tool change, but not during the casting process, for example for the purpose of molding ejection.
  • the frames also serve to align and position the mold and guide. The force is not applied in the plane of the frame but by plates which have the function of a yoke, so that an undesirable gap formation can not be excluded.
  • the inventive design of the element of the locking mechanism as a drawbar, which realizes the required locking force brings the improved material properties of the invention preferred materials such as carbon fiber compound, such as the ratio of the structural strength to the mass of the Glasrahmens of about 800 (steel about 8 to 12) , targeted to wear.
  • the object of the invention is also achieved by an apparatus for producing metal parts by hydroforming, which comprises at least one split mold and a device according to claims 1 to 5.
  • Fig. 1 is an advantageous embodiment of the locking device 1 according to the invention as part of a device for producing metal parts by internal pressure deformation, with a two-part mold 12, shown in a side view.
  • a machine frame 6 is fixed, which consists essentially of a box-shaped construction of structural steel.
  • a frame 6.3 is firmly connected to another frame 6.1 via a column 6.2.
  • two joints 8 are arranged, which are rigidly fixed in the direction of the longitudinal axis of the machine frame 6.
  • the two clamping yokes 2 are articulated, so that they are almost parallel to the longitudinal axis of the machine frame 6 pivotally.
  • the pivoting of the clamping yoke 2 is realized by two hydraulic pivot cylinder 9, which are arranged on the frame 6.3. In the four corners of the frame 6.3, four lifting cylinders 4 are arranged on this supporting vertical, which are connected to the traverse 3.
  • the traverse 3 has flat contact surfaces 3.1 on which also plan and parallel to these arranged bearing surfaces 2.1 of the clamping yoke 2 are deductible in the pivoted state.
  • On the cross member 3 the upper part of the two-part longitudinally divided mold 12 is attached.
  • the lower part of the molding tool 12 is fixedly connected to the machine table 7.
  • the machine table 7 rests freely on the piston surfaces of the four press cylinders, which form the force-generating elements of the device 5.
  • the pressing cylinders are attached to the frame 6.1 of the type that these force-generating elements of the device 5, which act on the same clamping yoke 2, preferably a plurality of hydraulic high-pressure cylinders, are arranged such that the average force application lines of these force-generating elements of the device 5 are almost parallel and in a plane that does not differ substantially from the plane that divides the yoke 2 in the axial direction in the middle.
  • the segments 2.3 are largely made of a light metal, such as aluminum alloys.
  • the Switzerlandrahmen 2.2 consist largely of a carbon fiber compound, such as an inter-modal fiber with about 50 to 65% fiber volume fraction in an epoxy resin matrix.
  • Fig. 2 shows an alternative variant of the locking device with closed or open die ( Fig. 2a respectively. Fig. 2b ) in a perspective view.
  • the machine frame 6 consists essentially of a box-shaped steel construction.
  • a lower frame 6.3 is over four vertically arranged carrier with a further frame 6.1 firmly connected.
  • a tension bow carrier 10 is arranged between these two frames and connected to the frame 6.3 by means of four spring guides 11.
  • the two joints 8 are attached.
  • the two clamping yokes 2 are hinged to the lower part, so that they are parallel to the longitudinal axis of the machine frame 6 pivotally.
  • the annular, inflexible drawbar 2.2 wraps around the semicircular contours of the upper and lower segments 2.3 and is connected to these.
  • the upper part of the two-part mold 12 is attached.
  • the lower part of the molding tool 12 is attached to the frame 6.1, on the underside of which also the four downwardly projecting press cylinders 5 are fixed.
  • the pressing cylinder 5 press through the four openings of the Glasbügelanis 10 through the bearing surfaces 2.4 of the lower of the segments 2.3.
  • the pressing cylinders are attached to the frame 6.1 of the type that when the drawbar 2 is pivoted ( Fig. 2a ), the average force application lines of these force-generating elements of the device 5 run almost parallel and in a plane which does not differ substantially from the plane which divides the tension bow 2 in the axial direction in the middle.
  • the clamping yoke 2 to the tool 12 can be arranged axially displaceable.
  • the pivoting of the clamping yoke 2 is realized by two hydraulic pivot cylinder 9, which are arranged on the frame 6.3. In the four corners of the frame 6.3, four vertical lifting cylinders 4 are arranged on this supporting, which with the traverse 3 are connected.
  • the traverse 3 has flat contact surfaces 3.1 on which also plan and parallel to these arranged bearing surfaces 2.1 of the clamping yoke 2 are deductible in the pivoted state.
  • On the cross member 3 the upper part of the two-part longitudinally divided mold 12 is attached.
  • the lower part of the molding tool 12 is fixedly connected to the machine table 7.
  • the machine table 7 rests freely on the piston surfaces of the four press cylinders, which form the force-generating elements of the device 5.
  • the component can also be used as an integral element of a locking tool, which serves for the deformation or shaping of plastic, metal, ceramic or glass parts.
  • a molding of the workpiece can be realized for example by blow molding or injection molding of larger plastic parts.
  • a two-part blow mold could be closed gap-free with the aid of the structural unit according to the invention, which may contain one or more components according to the invention.
  • the basic idea of the invention can be transferred in a known manner by a person skilled in the art after appropriate adaptation to the respective customary parameters.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Press Drives And Press Lines (AREA)
  • Clamps And Clips (AREA)
  • Moulding By Coating Moulds (AREA)
  • Presses And Accessory Devices Thereof (AREA)

Abstract

L'invention concerne un dispositif de maintien en position fermée conçu pour un dispositif de production de pièces métalliques par formage au moyen d'un outil de formage fermé. Ledit dispositif de maintien en position fermée comprend au moins : plusieurs étriers de traction (2) qui comportent respectivement au moins un cadre de traction (2.2) présentant un contour fermé et comprenant deux segments (2.3) qui sont espacés l'un de l'autre et disposés l'un en face de l'autre, entre lesquels un outil de formage (12) peut être disposé et qui présentent respectivement au moins une surface d'appui (2.1) ou une autre surface d'appui (2.4), lesdits étriers de traction (2) étant respectivement fixés de manière pivotante sur au moins une articulation (8) ; une surface d'appui (3.1) située au-dessus de l'outil de formage (12) ou sur la surface de ce dernier et servant de support pour une surface d'appui (2.1) d'un étrier de traction (2) ; ainsi qu'un dispositif (5) destiné à générer une force de maintien en position fermée supérieure à 3MN et comprenant plusieurs éléments générateurs de forces.

Claims (10)

  1. Dispositif de verrouillage pour un dispositif servant à fabriquer des pièces synthétiques, métalliques, céramiques ou en verre par un processus de déformation avec un outil de formage est fermé, ce dispositif comprenant au minimum :
    - Plusieurs étriers d'emboutissage (2), chacun des étriers d'emboutissage (2) étant pourvu d'au moins un cadre d'emboutissage (2.2) qui possède des contours fermés, où il est possible de disposer un outil de formage (12) entre les étriers d'emboutissage (2) et où les étriers d'emboutissage (2) peuvent être pivotés sur au moins un assemblage articulé (8), caractérisé en ce que
    le dispositif de verrouillage comprend, en outre, au moins les éléments
    suivants :
    - une surface d'appui (3.1) qui se trouve au-dessus de l'outil de formage (12) ou sur sa surface et qui peut servir de soutien pour une surface d'appui supérieure (2.1) d'un étrier d'emboutissage (2), et
    - un dispositif (5) qui génère une force de verrouillage dépassant 3 MN et qui est pourvu de plusieurs éléments générateurs de force où la force de verrouillage s'applique entre une surface d'appui supérieure et la surface d'appui inférieure (2.1 et 2.4) des étriers d'emboutissage (2) et au moins une surface qui se trouve au-dessous de l'outil de formage (12), le cadre d'emboutissage (2.2), qui possède un contour fermé au minimum, étant composé de deux segments (2.3) opposés et éloignés l'un de l'autre, et entre lesquels l'outil de formage (12) peut être installé, chacun de ces segments (2.3) possédant une surface d'appui (2.1) au minimum ou une surface d'appui (2.4), le matériau du cadre d'emboutissage (2.2) étant en grande partie un composite renforcé et en grande partie composé de matériaux ayant une résistance à la traction de 1500 N/mm2 à 4200 N/mm2, une limite d'endurance de 1200 N/mm2 à 3000 N/mm2 et une densité d'environ 1,2 et 2,5 g/cm2.
  2. Dispositif de verrouillage selon la revendication 1, caractérisé en ce que les éléments générateurs de force du dispositif (5) qui agissent sur le même étrier d'emboutissage (2) sont disposés de telle sorte que les lignes de transport de force moyennes desdits éléments générateurs de force du dispositif (5) sont presque parallèles et à un niveau qui ne diffère pas beaucoup du niveau qui divise centralement l'étrier d'emboutissage (2) en direction axiale.
  3. Dispositif de verrouillage selon la revendication 2, caractérisé en ce que les éléments générateurs de force du dispositif (5) sont un ou plusieurs vérins
    hydrauliques haute pression.
  4. Dispositif de verrouillage selon l'une des revendications susmentionnées, caractérisé en ce que les cadres d'emboutissage (2.2) sont principalement composés de composites renforcés non métalliques.
  5. Dispositif de verrouillage selon la revendication 4, caractérisé en ce que les cadres d'emboutissage (2.2) sont en grande partie composé d'un matériau composite de fibres de carbone, par exemple d'une fibre intermodulaire avec une part de volume de fibres d'environ 50 à 65 % dans une matrice de résine époxy.
  6. Dispositif de fabrication de pièces métalliques par déformation sous haute pression interne qui comprend au moins un outil de formage divisé (12) et un dispositif de verrouillage selon les revendications 1 à 5.
  7. Dispositif selon la revendication 6, caractérisé en ce que le dispositif (5) est disposé entre les surfaces d'appui (2.4) des étriers d'emboutissage (2) et directement sur l'outil de formage (12).
  8. Dispositif selon la revendication 6, caractérisé en ce que le dispositif (5) est disposé entre les surfaces d'appui (2.4) des étriers d'emboutissage (2) et indirectement sur l'outil de formage (12).
  9. Dispositif selon la revendication 6, caractérisé en ce qu'un étrier d'emboutissage (2) minimum peut être déplacé axialement en direction de l'outil de formage (12).
  10. Dispositif selon la revendication 6, caractérisé en ce qu'un étrier d'emboutissage (2) minimum peut être pivoté sur un assemblage articulé (8).
EP03762527A 2002-07-04 2003-06-27 Dispositif de maintien en position fermee Expired - Lifetime EP1523388B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10230071 2002-07-04
DE10230071A DE10230071C1 (de) 2002-07-04 2002-07-04 Zuhaltevorrichtung
DE20308856U 2003-06-06
DE20308856U DE20308856U1 (de) 2002-07-04 2003-06-06 Bauteil für ein Zuhaltewerkzeug
PCT/EP2003/006801 WO2004004939A1 (fr) 2002-07-04 2003-06-27 Dispositif de maintien en position fermee

Publications (2)

Publication Number Publication Date
EP1523388A1 EP1523388A1 (fr) 2005-04-20
EP1523388B1 true EP1523388B1 (fr) 2011-02-09

Family

ID=30116603

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03762527A Expired - Lifetime EP1523388B1 (fr) 2002-07-04 2003-06-27 Dispositif de maintien en position fermee

Country Status (11)

Country Link
US (1) US7415863B2 (fr)
EP (1) EP1523388B1 (fr)
JP (1) JP2005531416A (fr)
KR (1) KR101002021B1 (fr)
CN (1) CN100448563C (fr)
AU (1) AU2003249887A1 (fr)
CA (1) CA2490719C (fr)
MX (1) MXPA05000151A (fr)
PL (1) PL204466B1 (fr)
RU (1) RU2324563C2 (fr)
WO (1) WO2004004939A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009020448A1 (de) * 2009-05-08 2010-11-11 Rehau Ag + Co. Hochsteifes Spritzgussteil sowie Verfahren zur Herstellung eines hochsteifen Spritzgussteils
WO2016187047A1 (fr) 2015-05-15 2016-11-24 Usnr, Llc Presse modulaire
DE202016008097U1 (de) 2016-02-10 2017-02-02 Uniflex-Hydraulik Gmbh Radialpresse
CN109500184A (zh) * 2018-11-26 2019-03-22 佛山市佳锐智能装备有限公司 应用有限位装置的液压机

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH504961A (de) * 1969-03-24 1971-03-31 Von Roll Ag Presse
SE364469B (fr) * 1973-01-19 1974-02-25 Carbox Ab
SE383989B (sv) * 1974-07-29 1976-04-12 Asea Ab Presstativ
US4155476A (en) * 1977-12-21 1979-05-22 Autoclave Engineers, Inc. Hanging reaction frame assembly
US4345893A (en) * 1980-10-20 1982-08-24 Prince Corporation Molding machine
US4878374A (en) * 1988-05-20 1989-11-07 Nelson Richard E Five bar linkage mechanism
JPH0292625A (ja) * 1988-09-30 1990-04-03 Kobe Steel Ltd 繊維強化樹脂複合材料
DE19602490C2 (de) 1996-01-25 2002-07-18 Huber & Bauer Gmbh Vorrichtung zum Innenhochdruckumformen
NO991608L (no) * 1999-03-31 2000-10-02 Norsk Hydro As Feste/lÕseanordning
JP3714116B2 (ja) * 1999-08-09 2005-11-09 トヨタ自動車株式会社 操縦安定性制御装置
DE50003807D1 (de) * 1999-08-10 2003-10-30 Mueller Weingarten Maschf Zuhaltevorrichtung für hydraulisch angetriebene Pressen
JP2002153918A (ja) * 2000-11-20 2002-05-28 Nippon Steel Corp 型締め装置
SE522429C2 (sv) * 2002-05-27 2004-02-10 Flow Holdings Sagl Tryckcellspress och tråg för användning i en tryckcellspress, samt tillverkning av sådant tråg

Also Published As

Publication number Publication date
MXPA05000151A (es) 2005-04-08
AU2003249887A1 (en) 2004-01-23
CA2490719A1 (fr) 2004-01-15
PL204466B1 (pl) 2010-01-29
WO2004004939A1 (fr) 2004-01-15
EP1523388A1 (fr) 2005-04-20
US20060090529A1 (en) 2006-05-04
PL372981A1 (en) 2005-08-08
CA2490719C (fr) 2009-12-22
CN100448563C (zh) 2009-01-07
RU2324563C2 (ru) 2008-05-20
KR101002021B1 (ko) 2010-12-22
US7415863B2 (en) 2008-08-26
RU2005102708A (ru) 2005-07-20
CN1665613A (zh) 2005-09-07
JP2005531416A (ja) 2005-10-20
KR20050025308A (ko) 2005-03-14

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