EP0451013A1 - Verfahren und Vorrichtung zum Herstellen eines gewölbten Teils in einem Blechgegenstand und nach diesem Verfahren hergestellter Gegenstand - Google Patents

Verfahren und Vorrichtung zum Herstellen eines gewölbten Teils in einem Blechgegenstand und nach diesem Verfahren hergestellter Gegenstand Download PDF

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Publication number
EP0451013A1
EP0451013A1 EP91400795A EP91400795A EP0451013A1 EP 0451013 A1 EP0451013 A1 EP 0451013A1 EP 91400795 A EP91400795 A EP 91400795A EP 91400795 A EP91400795 A EP 91400795A EP 0451013 A1 EP0451013 A1 EP 0451013A1
Authority
EP
European Patent Office
Prior art keywords
punch
forming
zone
blank
raised part
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.)
Granted
Application number
EP91400795A
Other languages
English (en)
French (fr)
Other versions
EP0451013B1 (de
Inventor
Gérard Heurteboust
Jean-François Seconde
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.)
Sollac SA
Original Assignee
Sollac SA
Lorraine de Laminage Continu SA SOLLAC
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 Sollac SA, Lorraine de Laminage Continu SA SOLLAC filed Critical Sollac SA
Publication of EP0451013A1 publication Critical patent/EP0451013A1/de
Application granted granted Critical
Publication of EP0451013B1 publication Critical patent/EP0451013B1/de
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
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/383—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures scoring lines, tear strips or pulling tabs

Definitions

  • the present invention relates to a method and a device for forming a part in relief on a sheet blank, for example a rivet of a so-called easy opening lid for metal boxes or various containers.
  • the present invention also relates to a product comprising a raised part obtained by the method according to the invention.
  • the methods for forming a raised part on a sheet blank, used up to now, consist in carrying out a succession of stamping operations using several sets of die and punch in order to gradually form blanks. until the final obtaining of said raised part.
  • a flat sheet metal blank 1 is placed in a first set of matrix 2 and punch 3 so as to achieve, by bringing together said matrix 2 and said punch 3, an expansion of said sheet blank on an area located in forming a first bubble-shaped blank 1a (Fig. 1a).
  • this first blank 1a is placed in a second die set 4 and punch 5 (Fig. 1b) to make a first neck forming a second blank 1b
  • this second blank 1b thus formed is placed in a third die set 6 and punch 7 (Fig. 1c) to make a second neck forming a third blank 1c
  • this third blank 1c is finally placed in a fourth die set 8 and punch 9 (Fig. 1d) in order to obtain the raised part final 1d, said punch 9 having dimensions substantially equivalent to said part in relief.
  • This thinning is due to a concentration of the deformations on a limited area of the sheet blank during the successive forming phases.
  • thin irons which are generally very hardened, are characterized by their stiffness and their low ability to deform so that expanding forming proves to be very difficult to perform, since the metal at the periphery of the part relief does not participate in the deformations, and a metal rupture is generally created at the top of said raised part.
  • the surface of the localized preformed zone is substantially equivalent to that of said localized zone after final forming.
  • the present invention also relates to a device for forming a part in relief on a sheet blank comprising a die and a punch, characterized in that it comprises a set of die and preforming punch each provided with imprints of complementary form for producing, in a localized area of said sheet blank, a succession of stepped undulations and a set of dies and shaping punches of said raised part.
  • the present invention also relates to a product comprising a raised part, such as a rivet of a so-called easy opening cover, produced by the aforementioned method.
  • the device for forming, according to the invention, a part in relief on a sheet blank 10, such as a rivet of a cover said to be easy opening, consists of a set of die and preforming punch respectively 20 and 25 (Fig. 2) and a set of die and shaping punch respectively 30 and 35 (Fig. 3).
  • the die 20 and the punch 25 for preforming include imprints of complementary shape to produce, as will be seen later, on a localized area of the sheet blank (10) a succession of undulations.
  • the impressions of the preforming matrix 20 consist of a series of projections 21a, 21b and 21c and of recesses 22a, 22b and 22c for example three in number and whose height increases from the center towards the periphery of said matrix 20 .
  • the imprints of the preforming punch 25 consist of a series of projections 26a, 26b and 26c and of recesses 27a, 27b and 27c, the height of which decreases from the center towards the periphery of said punch 25.
  • the projection 26a of the punch 25 and the hollow 22a of the preforming die 20 have a shape substantially equivalent to the shape of the raised part which it is desired to obtain on the sheet blank 10.
  • the projecting part 26a of the punch 25 and the hollow 22a of the die 20 have a cylindrical shape and the projections 21a, 21b, 21c and 26a, 26b, 26c respectively of the die 20 and the punch 25 are constituted by radial rings.
  • the shaping matrix 30 has an imprint 31 and the shaping punch 35 has a projection 36 of shape complementary to said imprint 31 and also identical to the shape of the raised part which it is desired to obtain on the blank 10.
  • the forming process according to the invention consists of two successive operations, a preforming operation using the die 20 and the punch 25 and a shaping operation using the die 30 and the punch 35.
  • planar sheet blank 10 is placed between the die 20 and the preforming punch 25, said sheet blank being held, for example, by peripheral blank clamps not shown.
  • the die 20 descends and at the start of the stamping, the projection 21c comes into contact with the blank 10 which is itself in contact with the projection 26a of the punch 25 (FIG. 4a).
  • This first phase makes it possible to determine on the blank 10 a localized zone A (FIG. 6) on which the stresses will be uniformly re-distributed, while the peripheral zone of the blank surrounding the localized zone A, kept pressed by the blank holder, is not stretched and does not undergo deformations.
  • the matrix 20 continues to descend so that the projections 21b, 26b and 21a, 26c come into contact with the blank 10 (Fig. 4b), then gradually interpenetrate (Fig. 4c) until the highest projection, that is to say the projection 21c, comes to bear in the hollow 27c of the punch 25.
  • This preforming operation therefore causes the material to deform in several places and allows the surface to be deformed to be divided into several annular sections.
  • the material thins at the level of the support of the projection (s) and, during the formation of the stepped corrugations, the initial deformations are kept blocked under the effect of contact of said projections.
  • the surface of the preformed localized zone A is substantially equivalent to said localized zone after final forming of the raised part.
  • the punch 35 of conformation comprises means for controlling the constriction of the blank 10 during the unfolding of the corrugations 10d and of the conformation of the raised part 10a.
  • control means are formed by rings 37 arranged either at the level of the reliefs or at the level of the hollows of the corrugations 10d, and pressurized for example by springs 38.
  • the method and the device according to the invention therefore make it possible to form on a sheet metal blank a part in relief in two operations, while the known techniques require three to four successive operations.
  • the invention applies to all types of material and allows the use of strongly hardened thin irons with a thickness of between 0.10 and 0.20 mm, in particular for lids with easy opening of metal boxes or various containers.
  • the covers have a smaller thickness which results in weight gain, lower cost and - less effort to open these covers.
  • the invention applies not only to the forming of raised parts of circular section, such as rivets for covers, but also to the forming of raised parts of any section and possibly variable depending on the height of said raised part. .

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Making Paper Articles (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Powder Metallurgy (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Forging (AREA)
  • Physical Vapour Deposition (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Container Filling Or Packaging Operations (AREA)
  • Packaging For Recording Disks (AREA)
EP91400795A 1990-04-03 1991-03-25 Verfahren und Vorrichtung zum Herstellen eines gewölbten Teils in einem Blechgegenstand und nach diesem Verfahren hergestellter Gegenstand Expired - Lifetime EP0451013B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9004264 1990-04-03
FR9004264A FR2660220B1 (fr) 1990-04-03 1990-04-03 Procede et dispositif de formage d'une partie en relief sur un flan de tole et produit obtenu selon ce procede.

Publications (2)

Publication Number Publication Date
EP0451013A1 true EP0451013A1 (de) 1991-10-09
EP0451013B1 EP0451013B1 (de) 1994-05-18

Family

ID=9395407

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91400795A Expired - Lifetime EP0451013B1 (de) 1990-04-03 1991-03-25 Verfahren und Vorrichtung zum Herstellen eines gewölbten Teils in einem Blechgegenstand und nach diesem Verfahren hergestellter Gegenstand

Country Status (13)

Country Link
US (1) US5174146A (de)
EP (1) EP0451013B1 (de)
JP (1) JPH05305360A (de)
KR (1) KR100231074B1 (de)
AT (1) ATE105749T1 (de)
CA (1) CA2038958C (de)
DE (1) DE69102004T2 (de)
DK (1) DK0451013T3 (de)
ES (1) ES2056595T3 (de)
FI (1) FI112331B (de)
FR (1) FR2660220B1 (de)
NO (1) NO176239C (de)
PT (1) PT97213B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1441108A2 (de) * 2003-01-27 2004-07-28 United Technologies Corporation Dämpfungsglied für Leitschaufelgitter
CN101972807A (zh) * 2010-10-18 2011-02-16 烟台新科钢结构有限公司 一种波纹板连续压形生产方法及其设备

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH681614A5 (de) * 1991-07-03 1993-04-30 Soremartec Sa
FR2734182B1 (fr) * 1995-05-19 1997-07-25 Metal Box Plc Procede de fabrication d'un corps de rivet dans une plaque de metal
US6026573A (en) * 1997-05-14 2000-02-22 Dana Corporation Method for manufacturing a side rail for a vehicle frame assembly
AU8263498A (en) * 1998-06-24 2000-01-10 Weirton Steel Corporation Sheet metal rivet button fabrication
US6669891B1 (en) * 1999-04-02 2003-12-30 Midwest Brake Bond Company Method and apparatus for producing brake lining material
US6245180B1 (en) 1999-04-02 2001-06-12 Midwest Brake Bond Company Methods for bending brake lining material and for forming a lined brake shoe
JP2002092717A (ja) * 2000-09-20 2002-03-29 Sanyo Electric Co Ltd 自動販売機の扉装置
TW200827460A (en) * 2006-08-11 2008-07-01 Nippon Steel Corp DR steel sheet and manufacturing method thereof
US20100095724A1 (en) * 2006-10-13 2010-04-22 Kotagiri Seetarama S Metal forming with vibration assist
DE102008018656B9 (de) * 2008-04-11 2009-07-09 Thyssenkrupp Steel Ag Verfahren zur Herstellung von hochmaßhaltigen Halbschalen
JP5965159B2 (ja) * 2012-02-22 2016-08-03 東プレ株式会社 プレス部品の成形方法
JP5869929B2 (ja) * 2012-03-21 2016-02-24 株式会社神戸製鋼所 タブ付缶蓋のリベット成形方法
GB201308927D0 (en) 2013-05-17 2013-07-03 Kraft Foods R & D Inc A beverage preparation system, a capsule and a method for forming a beverage
US10273076B2 (en) 2013-05-17 2019-04-30 Koninklijke Douwe Egberts B.V. Beverage preparation system, a capsule and a method for forming a beverage
JP6120006B2 (ja) * 2014-03-19 2017-04-26 トヨタ紡織株式会社 金属板材のプレス成形方法及びプレス成形装置
JP6467791B2 (ja) * 2014-06-19 2019-02-13 大日本印刷株式会社 ブランク製造方法およびブランクを製造するための打抜機
CA2960748C (en) * 2014-09-12 2019-01-15 Honda Motor Co., Ltd. Press forming method and plate material expansion device used in said method
GB201420262D0 (en) 2014-11-14 2014-12-31 Kraft Foods R & D Inc A method of forming a cup-shaped body for a beverage capsule
JP6659380B2 (ja) * 2016-01-29 2020-03-04 株式会社神戸製鋼所 プレス成形品の製造方法及びプレス成形装置
JP6988136B2 (ja) * 2017-04-03 2022-01-05 東洋製罐株式会社 シェルの製造方法及び缶蓋の製造方法
US10946432B2 (en) 2017-11-29 2021-03-16 Alfons Haar, Inc. Method and apparatus for forming a beaded can end
US11059091B2 (en) 2018-01-23 2021-07-13 Stolle Machinery Company, Llc Shell with expandable rivet button and tooling therefor
US20190224739A1 (en) 2018-01-23 2019-07-25 Stolle Machinery Company, Llc Shell with expandable bubble and tooling therefor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2083394A1 (de) * 1970-03-18 1971-12-17 Aluminum Co Of America
FR2164703A1 (de) * 1971-12-24 1973-08-03 Vaw Ver Aluminium Werke Ag
FR2255115A1 (de) * 1973-12-20 1975-07-18 Warnke Umformtech Veb K
DE2619553A1 (de) * 1976-05-04 1977-11-10 Wehrstedt & Soehne Verfahren zur herstellung eines hohlnietes

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
US610532A (en) * 1898-09-13 harmatta
CA570608A (en) * 1959-02-17 A. Lyon George Method of and apparatus for making cartridge casings
US756404A (en) * 1902-08-20 1904-04-05 Eugen Polte Method of making hollow metal articles.
FR594670A (fr) * 1925-03-07 1925-09-17 Procédé pour l'obtention d'un cône à paroi mince et à base épaisse
US3685338A (en) * 1970-04-24 1972-08-22 Krause Ass F A Hem formation
SU435036A1 (ru) * 1972-05-22 1974-07-05 Н. Ф. Баранов Способ вытяжки листовых заготовок эластичным пуансоном
US4134284A (en) * 1977-06-01 1979-01-16 Achim Nitschke Method and apparatus for the manufacture of hollow bodies
SU1233990A1 (ru) * 1984-10-11 1986-05-30 Московский автомеханический институт Способ штамповки днищ
US4685322A (en) * 1985-09-03 1987-08-11 Aluminum Company Of America Method of forming a drawn and redrawn container body
SU1349835A1 (ru) * 1986-01-09 1987-11-07 Челябинский Политехнический Институт Им.Ленинского Комсомола Способ Колесова Ю.Б. выт жки полых изделий из листовой заготовки

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2083394A1 (de) * 1970-03-18 1971-12-17 Aluminum Co Of America
FR2164703A1 (de) * 1971-12-24 1973-08-03 Vaw Ver Aluminium Werke Ag
FR2255115A1 (de) * 1973-12-20 1975-07-18 Warnke Umformtech Veb K
DE2619553A1 (de) * 1976-05-04 1977-11-10 Wehrstedt & Soehne Verfahren zur herstellung eines hohlnietes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1441108A2 (de) * 2003-01-27 2004-07-28 United Technologies Corporation Dämpfungsglied für Leitschaufelgitter
EP1441108A3 (de) * 2003-01-27 2006-12-20 United Technologies Corporation Dämpfungsglied für Leitschaufelgitter
CN101972807A (zh) * 2010-10-18 2011-02-16 烟台新科钢结构有限公司 一种波纹板连续压形生产方法及其设备

Also Published As

Publication number Publication date
JPH05305360A (ja) 1993-11-19
NO911287D0 (no) 1991-04-02
NO176239C (no) 1995-03-01
ES2056595T3 (es) 1994-10-01
FR2660220B1 (fr) 1995-02-24
NO911287L (no) 1991-10-04
PT97213B (pt) 1998-07-31
FI911576A0 (fi) 1991-04-02
FI112331B (fi) 2003-11-28
ATE105749T1 (de) 1994-06-15
DE69102004D1 (de) 1994-06-23
CA2038958A1 (fr) 1991-10-04
FR2660220A1 (fr) 1991-10-04
NO176239B (no) 1994-11-21
CA2038958C (fr) 1999-07-13
DE69102004T2 (de) 1994-10-27
DK0451013T3 (da) 1994-09-19
EP0451013B1 (de) 1994-05-18
PT97213A (pt) 1993-05-31
KR100231074B1 (ko) 1999-12-01
US5174146A (en) 1992-12-29
FI911576A (fi) 1991-10-04

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