EP0541427B1 - Vorrichtung zum Formstanzen von Blattmaterialien, insbesondere von Blechplättchen - Google Patents

Vorrichtung zum Formstanzen von Blattmaterialien, insbesondere von Blechplättchen Download PDF

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Publication number
EP0541427B1
EP0541427B1 EP92402954A EP92402954A EP0541427B1 EP 0541427 B1 EP0541427 B1 EP 0541427B1 EP 92402954 A EP92402954 A EP 92402954A EP 92402954 A EP92402954 A EP 92402954A EP 0541427 B1 EP0541427 B1 EP 0541427B1
Authority
EP
European Patent Office
Prior art keywords
upper peripheral
bottom die
die base
press
peripheral blank
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
EP92402954A
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English (en)
French (fr)
Other versions
EP0541427A1 (de
Inventor
Michel Dittlo
Gabriel De Smet
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.)
Isoform SNC
Original Assignee
Isoform SNC
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Filing date
Publication date
Application filed by Isoform SNC filed Critical Isoform SNC
Publication of EP0541427A1 publication Critical patent/EP0541427A1/de
Application granted granted Critical
Publication of EP0541427B1 publication Critical patent/EP0541427B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/10—Stamping using yieldable or resilient pads
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49805—Shaping by direct application of fluent pressure

Definitions

  • the present invention relates to a device for stamping sheet materials, in particular sheet blanks on a single-acting press of the type comprising, on the one hand, a cushion of an incompressible elastic material forming a punch and housed in a tray retention and, on the other hand, means for preforming and definitive forming of said sheet blank.
  • FR-A-2 641 215 discloses a device for stamping sheet materials, in particular sheet blanks, comprising a cushion of elastic material housed in a retention tank, means for preforming the sheet blank formed by an outer slider carrying an upper blank holder and means for definitive forming of said sheet blank formed by a central slider acting on a punch.
  • This device also comprises a lower blank holder consisting of a support and holding element for at least part of the sheet blank, placed directly on the cushion and cooperating with the upper blank holder to tighten at least in localized areas. the sheet metal blank.
  • the lower blank clamp enters the retention tank and compresses the cushion of elastic material by reaction.
  • the cushion under the effect of this peripheral action acts on the central zone of the sheet blank and causes a preforming of said blank.
  • the swelling of the central part of the sheet blank is limited by the punch in order to avoid uncontrolled erratic deformations.
  • a central slide of the press causes the descent of said punch which at the same time drives the upper peripheral blank holder for the final forming of the central part of the sheet blank.
  • Such a device necessarily comprises two sliders, an outer slider carrying the upper blank holder and a central slider acting on the punch.
  • body transfer presses and presses currently used by manufacturers of prototype parts or small series generally have a single stamping slide.
  • the object of the present invention is to remedy these drawbacks by proposing a drawing device, in particular sheet metal blanks, using the technique known as elastoforming with a single-effect press, that is to say a slider.
  • the present invention therefore relates to a device for stamping sheet materials, in particular sheet blanks, on a single-acting press comprising, on the one hand, a cushion made of an elastic material, in particular incompressible, forming a punch and housed in a retention tank and, on the other hand, means for preforming and definitive forming of said sheet blank, in which the means for preforming and final forming are arranged in a matrix comprising a frame on which the slide of the single-acting press is supported, an upper peripheral blank holder connected to the frame by at least one elastic member for reaction, relaxation and retention, a matrix bottom disposed in the upper peripheral blank holder, and means for positioning the matrix bottom relative to the upper peripheral blank holder, said upper peripheral blank holder and said matrix bottom being slidably mounted one with respect to the other and comprising means of temporary connection between them.
  • the stamping device shown in FIG. 1 comprises a retention tank 1 forming a housing for a cushion 2 made of an elastic material, in particular incompressible.
  • the retention tank 1 rests on a table 3 of a single-effect press.
  • a lower peripheral blank holder 4 constituted by a frame, for example with a closed contour and which substantially matches the shape of the internal housing of the retention tank 1 so as to be able to penetrate into said housing at the time of forming a sheet blank 5 placed on said lower peripheral blank holder 4.
  • the stamping device comprises, above the retention tank 1, a matrix designated as a whole by the reference 6 and intended to cooperate with a slide 7 of the single-acting press.
  • the die 6 comprises means for preforming and forming the sheet blank 5 and consists of a frame 8 on which the slide 7 of the single-acting press is supported, an upper peripheral blank clamp 9 arranged opposite screw of the lower peripheral blank holder 4 and of a matrix bottom 10 placed in said upper peripheral blank holder 9.
  • the upper peripheral blank holder 9 is formed by a frame with a closed contour which substantially matches the shape of the internal housing of the retention tank. 1 so as to be able to penetrate into said housing and is connected to the frame 8 by at least one elastic member 11 for reaction, expansion and retention.
  • the upper peripheral blank holder 9 and the die bottom 10 are mounted to slide freely relative to one another.
  • the bottom of the matrix 10 has at its upper part, a shoulder 10a forming a stop and ensuring when the latter is in contact with a bearing surface 9a of the upper peripheral blank holder 9, that is to say at the end of the race. of the slide 7, an imprint 12 whose geometry corresponds to the shape of the part to be produced.
  • the position of the matrix bottom 10 for making the impression 12 is ensured by the direct pressure of the frame 8 and of the slide 7 on said matrix bottom 10 which is supported by its shoulder 10a on the bearing surface 9a of the clamp.
  • upper peripheral blank 9 or, according to a variant, by means of at least one elastic reaction, expansion and retaining member, not shown, interposed between the frame 8 and the bottom of the matrix 10.
  • the upper peripheral blank holder 9 and the die bottom 10 also comprise momentary connection means between them, in particular at the time of the ascent of the slide 7 of the press.
  • These momentary connection means are supported by the upper peripheral blank holder 9 and are constituted by a mobile element 13, such as for example a wedge, horizontally displaceable between, on the one hand, a first position in which the mobile element 13 penetrates. partially inside a housing 14 formed in the die bottom thus locking the die bottom 10 and the upper peripheral blank holder 9 (Fig. 4) and, secondly, a second position in which the movable element 13 is completely retracted (Fig. 1) releasing the matrix bottom 10 relative to the upper peripheral blank holder 9.
  • a mobile element 13 such as for example a wedge, horizontally displaceable between, on the one hand, a first position in which the mobile element 13 penetrates. partially inside a housing 14 formed in the die bottom thus locking the die bottom 10 and the upper peripheral blank holder 9 (Fig. 4) and, secondly, a second position in which the movable element 13 is completely retracted (Fig. 1) releasing the matrix bottom 10 relative to the upper peripheral blank holder 9.
  • the movement of the movable element 13 is controlled either manually, or for example by a jack 15 automatically in synchronization with the movement of the slide 7 of the press.
  • the elastic reaction, detent and retaining members interposed between the frame 8 and the upper peripheral blank holder 9 and / or the bottom of the matrix 10 can be formed as a function of the forces exerted and the size, for example, by springs, hydraulic cylinders, gas cylinders, elastic hydraulic or elastomer cushions.
  • the sheet blank 5 is formed as follows.
  • the sheet blank 5 is placed on the lower peripheral blank holder 4, the slide 7 being in the high position, then this slide 7 and the matrix 10 descend progressively.
  • the upper peripheral blank holder 9 comes into contact with the sheet blank 5 whose peripheral part is progressively clamped between said upper peripheral blank holder 9 and the lower peripheral blank holder 4 (FIG. 1).
  • the upper peripheral blank holder 9 compresses the cushion 2 under the force exerted, on the one hand, by the slide 7 of the press and, on the other hand, by the elastic members 11.
  • the cushion 2 under the effect of this peripheral compression action acts by creep on the central zone of the sheet blank 5 and causes the forming of said blank.
  • the bottom of the matrix 10 is then raised by the displacement of the sheet blank 5 deformed by the cushion 2.
  • the die bottom 10 is subjected either to the mechanical action of the slide 7, or to the mechanical action exerted by an elastic member and by said slide.
  • the die bottom 10 moves to a low position to bear by its shoulder 10a on the bearing surface 9a of the upper peripheral blank holder 9 and forms the central part of the sheet blank 5 .
  • the upper peripheral blank holder 9 and the die bottom 10 are locked by displacement of the movable element 13 which partially penetrates into the housing 14 and is positioned on either side of the separation of said upper peripheral blank holder 9 and said matrix bottom 10, as shown in FIG. 4.
  • the slide 7 is replaced towards a high position (FIG. 5) releasing the elastic members of the upper peripheral blank holder 9 and / or of the bottom of the die 10.
  • the upper peripheral blank holder 9 and the die bottom 10 rise simultaneously, thus avoiding deformation of the part by the pressure exerted by the cushion 2.

Claims (6)

  1. Vorrichtung zum Formstanzen von plattenförmigen Materialien, insbesondere von Blechplatten (5), auf einer einstufigen Presse, die einerseits ein Pufferkissen (2) aus einem elastischen, insbesondere inkompressiblen Material, das einen in einer Halterung (1) angeordneten Stempel bildet, und andererseits Einrichtungen zum Vorformen und Endformen der Blechplatte (5) aufweist, wobei die Einrichtungen zum Vorformen und Endformen in einem Gesenk (6) angeordnet sind, das einen Halterahmen (8), auf dem der Pressenstößel (7) der einstufigen Presse einwirkend aufliegt, einen Blech-Niederhalter (9) mit einer vorstehenden Umfangskante, der durch mindestens ein elastisches Gegendruckmittel (11) zum Abfedern und Zurückhalten mit dem Halterahmen (8) verbunden ist, ein Gesenkunterteil (10), das in dem mit der vorstehenden Umfangskante versehenen Blech-Niederhalter (9) angeordnet ist, und Einrichtungen (9a, 10a) aufweist, um das Gesenkunterteil (10) relativ zu dem mit der vorstehenden Umfangskante versehenen Blech-Niederhalter (9) zu plazieren, und wobei der mit der vorstehenden Umfangskante versehene Blech-Niederhalter (9) und das Gesenkunterteil (10) relativ zueinander verschiebbar gehalten sind und Einrichtungen (13) aufweisen, um zwischen ihnen eine vorübergehenden Verbindung zu bewirken.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtungen zur Plazieren des Gesenkunterteils (10) eine als Anschlag geformte Schulter (10a) enthalten, die an dem oberen Abschnitt des Gesenkunterteils vorspringt und dazu bestimmt ist, mit einer Auflagefläche (9a) des mit der vorstehenden Umfangskante versehenen Blech-Niederhalters (9) zusammenzuwirken.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtungen zur vorübergehenden Verbindung mindestens ein bewegliches Element (13) enthalten, welches zwischen einer ersten Stellung, in der das Gesenkunterteil (10) mit dem mit der vorstehenden Umfangskante versehenen Blech-Niederhalter (9) eingerastet ist, und einer zweiten Stellung verlagert werden kann, in der das Gesenkunterteil (10) bezüglich des mit der vorstehenden Umfangskante versehenen Blech-Niederhalters (9) entriegelt ist.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Verlagerung des beweglichen Elements (13) mit dem Arbeitstakt des Pressenstößels (7) der Presse synchronisiert ist, um das Gesenkunterteil (10) dann mit dem vorstehenden Blech-Niederhalter (9) zu verriegeln, wenn der Pressenstößel (7) der einstufigen Presse wieder angehoben wird.
  5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtungen zum Plazieren des Gesenkunterteils (10) mindestens ein elastisches Gegendruckmittel zum Abfedern und zum Zurückhalten aufweisen.
  6. Vorrichtung nach Anspruch 1 oder 5, dadurch gekennzeichnet, daß das elastische Gegendruckmittel zu Abfedern und Zurückhalten des mit der vorstehenden Umfangskante versehenen Blech-Niederhalters (9) und/oder des Gesenkunterteils (10) aus Elementen besteht, die Federn, hydraulische Zylinder, Gas-Zylinder, Elastomer-Polster oder hydraulische-Polster umfassen.
EP92402954A 1991-11-04 1992-10-30 Vorrichtung zum Formstanzen von Blattmaterialien, insbesondere von Blechplättchen Expired - Lifetime EP0541427B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR919113582A FR2683168B1 (fr) 1991-11-04 1991-11-04 Dispositif d'emboutissage de materiaux en feuille, notamment de flans de tole.
FR9113582 1991-11-04

Publications (2)

Publication Number Publication Date
EP0541427A1 EP0541427A1 (de) 1993-05-12
EP0541427B1 true EP0541427B1 (de) 1995-12-20

Family

ID=9418591

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92402954A Expired - Lifetime EP0541427B1 (de) 1991-11-04 1992-10-30 Vorrichtung zum Formstanzen von Blattmaterialien, insbesondere von Blechplättchen

Country Status (10)

Country Link
US (1) US5272898A (de)
EP (1) EP0541427B1 (de)
JP (1) JPH06218443A (de)
KR (1) KR930009759A (de)
AT (1) ATE131756T1 (de)
CA (1) CA2081962A1 (de)
DE (1) DE69206958T2 (de)
ES (1) ES2081075T3 (de)
FR (1) FR2683168B1 (de)
MX (1) MX9206301A (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2728489B1 (fr) * 1994-12-22 1997-01-31 Gec Alsthom Acb Presse de formage a matrice elastique
SE507262C2 (sv) * 1996-10-03 1998-05-04 Per Karlsson Dragavlastning samt verktyg för applicering därav
JPH11179440A (ja) * 1997-12-15 1999-07-06 Topre Corp ビードを備える板製品のプレス方法およびこれに用いるプレス装置
US6233989B1 (en) 2000-10-13 2001-05-22 Changing Paradigms, Llc Method and apparatus for stamping a metal sheet with an apertured design having rolled edges
SE522143C2 (sv) * 2002-05-08 2004-01-20 Flow Holdnings Sagl Tryckcellspress med gripanordning samt förfarande och användning vid tryckcellspress
US7316150B1 (en) 2006-11-07 2008-01-08 Ford Motor Company Impact reduction apparatus for stretch draw dies
US7823430B2 (en) * 2008-07-29 2010-11-02 Gm Global Technology Operations, Inc. Open press thermal gap for QPF forming tools
CN102476142B (zh) * 2010-11-26 2015-09-30 湖南晟通科技集团有限公司 一种无凹模连续冲压模具及其使用方法
EP2655672B1 (de) * 2010-12-24 2020-12-16 Voestalpine Stahl GmbH Verfahren zum erzeugen gehärteter bauteile mit bereichen unterschiedlicher härte und/oder duktilität
CN103406416B (zh) * 2013-08-27 2015-02-25 威海威高海盛医用设备有限公司 压力蒸汽灭菌器密封圈环座加工装置
WO2015057249A1 (en) * 2013-10-16 2015-04-23 Silgan Containers Llc System and method for forming metal container with embossing
WO2018014331A1 (zh) * 2016-07-22 2018-01-25 深圳市大富科技股份有限公司 Usb金属管件加工设备及其上模板
CN110576105A (zh) * 2018-06-27 2019-12-17 蓝思精密(东莞)有限公司 四面弯曲一次成型模具
CN112893652A (zh) * 2019-12-04 2021-06-04 齐雨光 一种冲压模具的拆装机构
CN111266452A (zh) * 2020-02-11 2020-06-12 燕山大学 一种基于电控永磁技术的分块压边装置及压边力控制方法
CN114247814B (zh) * 2021-12-23 2023-12-05 湖南顶立科技有限公司 一种挤压成型装置及模压方法
CN114850295B (zh) * 2022-05-07 2023-03-24 广东顺德联铸精密制造有限公司 一种千牛开式固定台压力机
CN115179671B (zh) * 2022-07-08 2023-09-05 杭州航民百泰首饰有限公司 一种黄金底片表面炫彩工艺及压印模具
CN116099936B (zh) * 2023-04-17 2023-06-16 沧州北方散热器股份有限公司 一种金属薄板冲扩孔一体化装置

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US2859719A (en) * 1953-08-17 1958-11-11 Northrop Aircraft Inc Combined resilient press pad and expandable bladder
US2771851A (en) * 1954-05-20 1956-11-27 Lockheed Aircraft Corp Sheet metal forming die means
FR2564339B1 (fr) * 1984-05-17 1987-12-24 Usinor Procede et dispositif d'emboutissage de toles.
FR2590814B1 (fr) * 1985-12-04 1988-02-26 Usinor Procede et dispositif d'emboutissage de toles a faible allongement
FR2641217B1 (fr) * 1988-12-30 1994-04-01 Isoform Procede et dispositif d'emboutissage de materiaux en feuille sur une matrice de formage elastique
FR2641215A1 (fr) * 1988-12-30 1990-07-06 Isoform Dispositif d'emboutissage de materiaux en feuilles
FR2655892A1 (fr) * 1989-12-18 1991-06-21 Lorraine Laminage Procede et dispositif de mise en forme d'un flan de tole notamment pour realiser un masque de tube cathodique et masque de tube cathodique obtenu selon ce procede.

Also Published As

Publication number Publication date
ATE131756T1 (de) 1996-01-15
US5272898A (en) 1993-12-28
DE69206958D1 (de) 1996-02-01
DE69206958T2 (de) 1996-05-23
KR930009759A (ko) 1993-06-21
MX9206301A (es) 1993-08-01
JPH06218443A (ja) 1994-08-09
FR2683168A1 (fr) 1993-05-07
EP0541427A1 (de) 1993-05-12
ES2081075T3 (es) 1996-02-16
CA2081962A1 (fr) 1993-05-05
FR2683168B1 (fr) 1994-03-04

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