EP0160343B1 - Machine de formage d'anneaux extérieurs pour pièces de monnaie ou médailles bimétalliques à partir d'ébauches métalliques rondes - Google Patents

Machine de formage d'anneaux extérieurs pour pièces de monnaie ou médailles bimétalliques à partir d'ébauches métalliques rondes Download PDF

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Publication number
EP0160343B1
EP0160343B1 EP85200652A EP85200652A EP0160343B1 EP 0160343 B1 EP0160343 B1 EP 0160343B1 EP 85200652 A EP85200652 A EP 85200652A EP 85200652 A EP85200652 A EP 85200652A EP 0160343 B1 EP0160343 B1 EP 0160343B1
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EP
European Patent Office
Prior art keywords
die
punch
machine
backing
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
Application number
EP85200652A
Other languages
German (de)
English (en)
Other versions
EP0160343A3 (en
EP0160343A2 (fr
Inventor
Emilio Vita Finzi Zalman
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.)
DELTACOGNE S.P.A.
Original Assignee
DeltaCogne SpA
Deltasider SpA
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 DeltaCogne SpA, Deltasider SpA filed Critical DeltaCogne SpA
Priority to AT85200652T priority Critical patent/ATE38949T1/de
Publication of EP0160343A2 publication Critical patent/EP0160343A2/fr
Publication of EP0160343A3 publication Critical patent/EP0160343A3/en
Application granted granted Critical
Publication of EP0160343B1 publication Critical patent/EP0160343B1/fr
Expired 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
    • B21D53/00—Making other particular articles
    • B21D53/16—Making other particular articles rings, e.g. barrel hoops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/02—Dies; Accessories
    • B44B5/024—Work piece loading or discharging arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/02—Dies; Accessories
    • B44B5/026—Dies

Definitions

  • This invention relates to a machine for forming rings to constitute an outer rim on bimetallic coins or medals, starting from round metal blanks.
  • bimetallic coin constituted by an outer steel ring and an inner disc composed of a bronze, cupronickel and aluminium alloy.
  • This coin is formed in two stages, namely a first stage in which a round metal blank is used to form the outer ring, which is worked in such a manner as to comprise a compressed and toothed inner annular edge and having its radial cross-section tapering inwards, and a second actual coining stage in which the disc is placed inside the ring and, on being struck by the coining die, expands so that its outer annular edge copenetrates the toothed inner annular edge of the ring, so that these two parts ofthe coin become securely joined to each other.
  • the first stage is carried out by a machine which in a single operation simultaneously both punches out the central portion of the round blank and forms the said compressed and toothed inner edge.
  • the backing die has an axial hole which slidably receives the punch.
  • the die correspondingly comprises an axial hole designed to receive the punch during the punching and formation of the inner edge of the ring.
  • the die and backing die each comprise, at one mouth of the respective hole, a surface in the shape of a circular rim which is designed to come into contact with the round blank. This surface comprises a projecting annular lip which in practice is a continuation of the walls of the hole.
  • the walls of each hole also comprise an equal series of longitudinal projecting ribs which terminate at the lip, and the outer cylindrical surface of the punch comprises a corresponding series of longitudinal hollow grooves.
  • the round blank When in operation, the round blank is rested on the circular rim-shaped surface of the die.
  • the upper support is then made to descend onto the lower support so that the die and backing die lock the round blank between them, the punch passes through the central portion of the round blank so punching it out, and finally an abutment element rigid with the punch presses the die and backing die against each other.
  • the central hole is formed in the ring during the punching operation, while the subsequent compression results in the formation of the compressed and toothed edge of the ring by the action of the lips and grooves.
  • the round blank is fed and positioned on the die manually, requiring considerable accuracy on the part of the operator who has to centre the round blank on the die in order to obtain a ring with a centered hole. This restricts the machine productivity.
  • the shape of the die and backing die does not lend to automatic extraction of the formed ring, which in many cases remains adhering to said elements. This requires manual intervention by suitable pincers, creating serious safety problems besides slowing down the production rate.
  • the scrap is constituted by a disc punched from the round blank and comprising notches formed by the ribbing on the die.
  • the presence of the notches means that the scrap cannot be used directlyforforming a normal small metal coin. The scrap can therefore only be melted down.
  • the object of the present invention is to provide a machine with characteristics such as to obviate the aforesaid problems of the current machines.
  • the machine illustrated in Figure 1 is substantially composed of a feed and advancement unit for the round metal blank, and a punching and precoining unit which actually works the round metal blank carried by the feed and advancement unit until an outer ring for a bimetallic coin or medal is obtained.
  • the reference numeral 10 indicates the round metal blank to be worked and 100 the outer ring obtained.
  • the feed and advancement unit comprises a chute 11 fed continuously with round metal blanks 10.
  • the chute 11 terminates over a cylindrical container 12 in which the blanks 10 arriving from the chute 11 become piled one on the other.
  • the container 12 is open at its base to allow the entry of a slider 13 mobile with reciprocating horizontal rectilinear motion, and the exit of an individual metal blank 10.
  • the slider 13 enters the container 12 and urges the most lower blank 10 of the pile out of the container 12.
  • the slider 13 leaves the container 12 to cause the overlying pile of blanks 10 to fall and a new blank 10 to come into alignment with the outlet of the container 12.
  • the slider 13 pushes the blanks 10 one by one, as seen, along a guide 14 disposed in a position corresponding with the punching and precoining unit, as described hereinafter.
  • a second chute 15 At the end of the guide 14 there is provided a second chute 15 by means of which the produced outer rings 100 are conveyed away from the machine.
  • the punching and precoining unit has a basic structure analogous to that of a vertical press. It comprises a punching station 16 and a precoining station 17.
  • a base 18 is provided on which a lower support 19 is rigidly fixed.
  • the support 19 carries a die 20 of the punching station 16 and a die 21 of the precoining station 17.
  • a slide 22 is provided to which a support 23 is rigidly fixed.
  • the support 23 carries an assembly consisting of a punch, blank-holding backing die and centering element, this assembly being indicated overall by 24 and forming part of the punching station 16.
  • the support 23 In a position corresponding with the die 21, the support 23 also carries a punch/backing-die assembly indicated overall by 25 and forming part of the precoining station 17.
  • the slide 22 is driven with vertical reciprocating rectilinear motion by a crank cam, not shown because of known type, by way of a connecting rod 26.
  • the crank cam is also used for providing the horizontal reciprocating rectilinear motion to the slider 13, as indicated diagrammatically by dashed and dotted lines, so as to synchronise the movement of the punching and precoining unit with the movement of the slider 13.
  • the guide 14 runs between the upper assemblies 24 and 25 and the lower dies 20 and 21.
  • Figures 2 to 11 show structural and operational details of machine of Figure 1 which has been described briefly heretofore.
  • the guide 14 is substantially constituted by a composite plate 27 of a certain thickness, within which there is provided a longitudinal channel 25 in which the round blanks 10 to be worked are contained and slide in a row.
  • the plate 27 also comprises longitudinal through slots 29 which open into the channel 28 to allow visual checking of the advancement of the blanks 10.
  • the plate 27 comprises a lower hole 30 and an upper hole 31 coaxial with the hole 30, these opening into the channel 28.
  • the plate 27 comprises a lower hole 32 and an upper hole 33 coaxial with the hole 32, these opening into the channel 28.
  • the plate 27 comprises a series of pairs of opposing transverse elastic pushers 34.
  • Each elastic pusher 34 is composed of an element 35 slidably housed in a transverse seat 36 of the plate 27, which at one end rotatably carries a wheel 37 and at its other end is urged by a spring 38.
  • the spring 38 maintains the element 35 in a position in which the wheel 37 carried by it projects into the channel 28.
  • the mobile upper support 23 is guided in its movement by four vertical columns 39 fixed to the support 23 and slidably housed in corresponding bushes 40 inserted into the fixed lower support 19.
  • the die 20 is mounted on a block 41 fixed to the fixed lower support 19.
  • the die 20 is of substantially cylindrical shape and comprises a circular axial through cavity 42 and a tapered upper mouth 43 with its edge in theform of a flat ring.
  • the mouth 43 is housed in the lower hole 30 of the plate 27.
  • the assembly 24 comprises aligned with the cavity 42 of the die 20, a cylindrical punch 44 which has its working end flat and is fixed at its other end to a base 45 rigid with the support 23.
  • the assembly 24 also comprises a blank-holding backing die 46 with a cylindrical through cavity 47, in which the punch 44 is slidably housed, and a mouth 48 with its edge in the form of a flat ring which mates with and faces the mouth 43 of the die 20.
  • the backing die 46 is fixed to a plate 49 which is slidably mounted on a pair of columns 39 and suspended from the support 23 by tie rods 50 and tie rods 51. Over each tie rod 51 there is mounted a shock absorber block 52 which is interposed between the plate 49 and support 23.
  • the assembly 24 comprises a centering retainer 53 constituted by a ring 54 which is kept elastically resting on an inner portion of the backing die 46 by springs 55 acting on the base 45, and to which there are annularly fixed four claws 56 which extend parallel to the punch 44 and external to it towards the plate 27, to pass through the backing die 46.
  • a centering retainer 53 constituted by a ring 54 which is kept elastically resting on an inner portion of the backing die 46 by springs 55 acting on the base 45, and to which there are annularly fixed four claws 56 which extend parallel to the punch 44 and external to it towards the plate 27, to pass through the backing die 46.
  • the plate 27 there are provided four corresponding cavities 57 ( Figure 2) which open into the channel 28 and are designed to receive the terminal portions of the claws 56.
  • the die 21 is mounted on a block 58 fixed to the fixed lower support 19.
  • the die 21 is of substantially cylindrical shape and comprises an axial circular through cavity 59 and a tapered upper mouth 60.
  • the mouth 60 has an edge in the form of a flat ring with an internal projecting lip 61 (well visible in the enlargement of Figure 9).
  • the mouth 60 comprises longitudinal ribs 62 on its inner annular wall.
  • the mouth 60 is housed in the lower hole 32 of the plate 27.
  • the assembly 25 comprises, aligned with the cavity 59 of the die 21, a cylindrical punch 63 which is pointed at one end and is fixed at its other end to a base 64 rigid with the support 23.
  • the cylindrical outer surface of the punch 63 comprises longitudinal grooves 65 in positions exactly corresponding with the ribs 62 of the die 21.
  • the assembly 25 also comprises a backing die identical to the die 21, and which is therefore indicated overall and in its component parts by the same reference numerals as the die 21 followed by the letter A.
  • the cylindrical cavity 59A of the backing die 21A slidably houses the punch 63.
  • the backing die 21A is mounted in a block 66, which itself is fixed to a plate 67.
  • the plate 67 is mounted slidable on a pair of columns 39, different from the pair on which the plate 49 is mounted.
  • the plate 67 is also supported by the support 23 by means of respective tie rods 68 and 69.
  • the plate 27 is elastically suspended with respectto the blocks 41 and 58 of the dies 20 and 21 respectively ( Figure 5). This is obtained by supporting the plate 27 by a plate 71 which is slidably mounted on the columns 39 and rests on springs 72 acting on the support 19. Each spring 72 cooperates with a tie rod 73 which retains the plate 71 by opposing the elastic thrust of the spring. Finally, stop elements 74 are provided ( Figure 11), each mounted on the fixed lower support 19 by means of a tie rod 75, and with a shock absorber block 76 therebetween. The stop elements 74 are disposed in positions corresponding with the plate 67 in order to brake and halt its downward path of travel.
  • each round blank 10 passes stepwise along the guide 28 until it reaches a position corresponding with the die 20 and assembly 24 of the punching station 16.
  • the support 23 is lowered towards the support 19, and the following operations occur in sequence: the claws 56 penetrate into the respective cavities 57 to centre the blank 10 relativetothe punch 44 and cavity42,the mouth 48 of the backing die 46 presses the blank 10 against the mouth 43 of the die 20, so locking the blank, the punch 44 penetrates the blank 10 to remove a central portion therefrom, thus obtaining a semifinished product of ring shape indicated hereinafter by 10S.
  • the scrap disc indicated by 10T ( Figures 1, 6), falls through the cavity 42 of the die 20 and passages 77 and 78 provided in the block 41 and support 19 respectively, and into a collection container 79.
  • the support 23 and with it the assembly 24 then rise from the plate 27, and the semifinished product 10S continues on its stepwise path towards the precoining station 17.
  • the plate 27 and support plate 71 descend until the blank 10 rests on the mouth 43 of the die 20.
  • the plate 27 and plate 71 return to their initial position by the action of the springs 72, to remove the semifinished product 10S from the mouth 43 of the die 20.
  • the support 23 with the assembly 25 then rises, and the piece worked in this manner (ring 100) advances stepwise towards the chute 15.
  • the plate 27 also obviously descends during this precoining stage, and is returned elastically to its initial position so as to separate the worked piece (ring 100) from the die 21.
  • an inner compressed and toothed edge is formed in the semifinished product 10S by virtue of the action of the lips 61 and 61 A of the mouths 60 and 60A of the dies 21 and 21A, which shape the edge, combined with the action of the ribs 62 and 62A and the grooves 65 of the punch 63, which shape the teeth as shown in the highly enlarged views of Figures 9, 10.
  • a bimetallic coin or medal is then formed with the ring 100 by means of a separate proper coining operation, as explained in the introduction.
  • the length of the channel 28 of the guide 14 and the stroke of the slider 16 must be such as to ensure, at each step, the correct positioning of a blank 10 at the die 20 and assembly 24, and the correct positioning of a semifinished product 10S at the die 21 and assembly 25.
  • the elastic pushers 34 contribute to the correct advancement and positioning of the pieces (blanks 10, semifinished products 10S, rings 100) mutually disposed in a line, by virtue of the fact that they keep them elastically pressed against each other as can be seen from Figure 2.
  • the machine as described and illustrated enables all the drawbacks of the known art mentioned in the introduction to be obviated.
  • the feeding of the blanks to be worked is completely automatic.
  • the separation of the punching and precoining operations into two stations considerably prolongs the life of the dies and backing dies.
  • the die and backing die of the precoining station which are extremely delicate due to the presence of lips and ribs, do not have to withstand the punching stress.
  • This separation of the punching and precoining operations facilitates the removal of the semifinished or finished piece from the dies and backing dies, in particular in the precoining station where no forces exist which would cause the semifinished product to adhere to the die or backing die. Removal is also facilitated in the illustrated embodiment by the shape of the channel 28 which retains the piece, and by the oscillatory movement of the guide which, as seen, rises when the punching and precoining operations are finished, to remove the piece from the die.
  • the working scrap is constituted by discs 10T which can be immediately reused, for example for coining small single-metal coins or medals.
  • the feed unit which in this example is formed with a to-and-fro slider and relative guide can be replaced by mechanical hands which continuously convey the workpieces to the station.
  • the punching station and precoining station each comprise only one die-punch unit (die 20-assembly 24 for the punching station 16 and die 21-assembly 25 for the precoining station 17).
  • a machine would be conceivable with a punching station and precoining station each comprising several die-punch units in parallel, served by respective parallel feeders.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Adornments (AREA)
  • Forging (AREA)
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Claims (11)

1. Machine de formage d'anneaux extérieurs pour pièces de monnaic ou médailles bimétalliques à partir d'ébauches métalliques rondes, chaque anneau présentant un bord intérieur comprimé et denté, la machine comportant des outils de poinçonnage et de préfrappage et étant caractérisée en ce qu'elle comprend:
- un premier poste de travail comportant au moins une unité réalisée à partir d'un premier poinçon, une première matrice correspondante présentant une cavité prévue pour recevoir ledit premier poinçon, une première matrice d'appui maintenant l'ébauche montée coulissante sur ledit premier poinçon et un dispositif de blocage, monté sur ledit premier poinçon, pour le centrage de l'ébauche ronde sur la première matrice;
- un second poste de travail comportant au moins une unité réalisée à partir d'un second poinçon avec une extrémité effilée et muni sur sa face extérieure de rainures longitudinales, une seconde matrice présentant une cavité prévue pour recevoir ledit second poinçon et munie de nervures longitudinales correspondantes, un orifice de la cavité de ladite seconde matrice étant muni d'une lèvre en saillie vers l'intérieur et une seconde matrice d'appui identique à ladite seconde matrice et montée sur ledit second poinçon, son embouchure faisant face à l'embouchure de ladite seconde matrice;
- des moyens pour alimenter les ébauches rondes audit premier poste de travail, entre ledit premier poinçon et ladite première matrice et des moyens pour alimenter les pièces travaillées dans ledit premier poste jusqu'audit second poste entre ledit second poinçon et ladite seconde matrice;
- des moyens pour comprimer ladite première matrice d'appui contre ladite première matrice et des moyens pour actionner ledit premier poinçon pour lui permettre de pénétrer dans ladite première matrice afin de perforer l'ébauche ronde, des moyens pour actionner ledit second poinçon pour lui permettre de pénétrer dans ladite seconde matrice et des moyens pour comprimer ladite seconde matrice d'appui contre ladite seconde matrice afin de former, sur l'ébauche ronde perforée, le bord intérieur comprimé et denté.
2. Machine selon la revendication 1, caractérisée en ce que lesdits moyens pour alimenter les ébauches rondes audit premier poste de travail et lesdits moyens pour alimenter les pièces travaillées dans ledit premier poste audit second poste comprennent un guide unique dans lequel les ébauches rondes puis les pièces travaillées sont contenues, puis glissent dans un rampe, ledit guide passant entre ledit premier poinçon et ladite première matrice et entre ledit second poinçon et ladite seconde matrice.
3. Machine selon la revendication 2, caractérisée en ce que ledit guide est suspendu élastiquement par rapport auxdites première et seconde matrices.
4. Machine selon la revendication 2, caractérisée en ce que ledit guide est réalisé à partir d'une plaque dans laquelle est ménagé un canal - longitudinal dans lequel les ébauches rondes et les pièces travaillées sont contenues et glissent, ledit canal longitudinal s'ouvrant dans une position correspondant audit premier poinçon supportant ladite première matrice d'appui maintenant les ébauches et à ladite première matrice, et dans une position correspondant audit second poinçon supportant ladite second matrice d'appui et à ladite seconde matrice.
5. Machine selon la revendication 4, caractérisée en ce que des paires de poussoirs transversaux élastiquement escamotables font saillie dans ledit canal longitudinal, chaque poussoir étant équipé d'une tête réalisée à partir d'une roue tournant librement prévue pour entrer en contact élastique avec le bord extérieur de l'ébauche ronde ou de la pièce travaillée.
6. Machine selon la revendication 2, caractérisée en ce que l'alimentation du guide en ébauches rondes est assurée au moyen d'un dispositif d'avancement pas-à-pas des ébauches.
7. Machine selon la revendication 6, caractérisée en ce que ledit dispositif d'avancement pas-à-pas comporte un coullisseau à mouvement de va-et-vient agissant sur un empilage d'ébauches rondes, ledit coulisseau, lors de son déplacement vers l'extérieur, poussant l'ébauche du fond de l'empilage dans le guide et lors de son déplacement de retour se retirant de l'empilage.
8. Machine selon la revendication 1, caractérisée en ce que lesdits moyens pour actionner ledit premier poinçon et le faire pénétrer dans ladite première matrice ainsi que lesdits moyens pour actionner ledit second poinçon et le faire pénétrer dans ladite seconde matrice comprennent un mécanisme de presse, équipé d'une glissière se déplaçant en va-et-vient, supportant lesdits premier et second poinçons et un lit fixe supportant lesdites première et seconde matrices.
9. Machine selon la revendication 1, caractérisée en ce que lesdits moyens prévus pour comprimer ladite première matrice d'appui contre ladite matrice comprennent une base dudit premier poinçon, ladite base étant prévue pour venir au contact de ladite première matrice d'appui avant la pénétration dudit premier poinçon dans ladite première matrice.
10. Machine selon la revendication 1, caractérisée en ce que lesdits moyens prévus pour comprimer ladite seconde matrice d'appui contre ladite seconde matrice comprennent une base dudit second poinçon, ladite base étant prévue pour venir au contact de ladite seconde matrice d'appui avant la pénétration dudit second poinçon dans ladite seconde matrice.
11. Machine selon la revendication 1, caractérisée en ce que ledit dispositif de blocage pour le centrage de l'ébauche ronde sur la première matrice comporte un ensemble de griffes parallèles disposées de façon à venir en contact avec le bord extérieur de l'ébauche avant l'établissement du contact entre ladite première matrice d'appui et ladite première matrice et à maintenir l'ébauche entre celles-ci dans une position centrée par rapport à l'ouverture de la cavité de ladite première matrice.
EP85200652A 1984-05-02 1985-04-26 Machine de formage d'anneaux extérieurs pour pièces de monnaie ou médailles bimétalliques à partir d'ébauches métalliques rondes Expired EP0160343B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85200652T ATE38949T1 (de) 1984-05-02 1985-04-26 Einrichtung zum formen von aussenringen fuer bimetallische muenzen oder medaillen aus runden metallischen rohlingen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT20766/84A IT1173945B (it) 1984-05-02 1984-05-02 Macchina per la realizzazione,da tondelli metallici,di anelli esterni per monete o medaglie bimetalliche
IT2076684 1984-05-02

Publications (3)

Publication Number Publication Date
EP0160343A2 EP0160343A2 (fr) 1985-11-06
EP0160343A3 EP0160343A3 (en) 1987-08-19
EP0160343B1 true EP0160343B1 (fr) 1988-11-30

Family

ID=11171751

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85200652A Expired EP0160343B1 (fr) 1984-05-02 1985-04-26 Machine de formage d'anneaux extérieurs pour pièces de monnaie ou médailles bimétalliques à partir d'ébauches métalliques rondes

Country Status (4)

Country Link
EP (1) EP0160343B1 (fr)
AT (1) ATE38949T1 (fr)
DE (1) DE3566508D1 (fr)
IT (1) IT1173945B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4035738A1 (de) * 1990-11-09 1992-05-14 Deutsche Nickel Ag Verfahren zur herstellung von zweiteiligen muenzrohlingen und derartiger muenzrohling
DE4113971A1 (de) * 1991-04-29 1992-11-05 Schuler Gmbh L Verfahren und einrichtung zum fertigen von ring-kern-muenzen
ES2080977T3 (es) * 1992-04-02 1996-02-16 Krupp Vdm Gmbh Pieza bruta de moneda.
DE4411900C2 (de) * 1994-04-07 2002-07-04 Graebener Pressensysteme Gmbh Prägepresse, insbesondere Münzprägepresse
DE4432093C2 (de) 1994-09-09 1997-04-30 Krupp Vdm Gmbh Rohling für Geldmünzen oder Medaillen
CN101850389B (zh) * 2010-04-23 2012-05-30 中国印钞造币总公司 双金属币/章外环制造设备
CN103990739A (zh) * 2014-05-20 2014-08-20 郭婷月 一种工艺品一次成型冲床及加工方法
DE102015119174A1 (de) * 2015-11-06 2017-05-11 Schuler Pressen Gmbh Umformvorrichtung sowie Verfahren zum Umformen eines Innenrandes eines Rondenrings

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE425446A (fr) *
GB648267A (en) * 1942-02-16 1951-01-03 Illinois Tool Works Washer strip and method and apparatus for producing same
FR1392631A (fr) * 1964-02-04 1965-03-19 Ateliers Rene Halftermeyer Are Nouveau procédé de fabrication de pignons, en particulier pour démultiplicateurs de condensateurs variables et produits obtenus

Also Published As

Publication number Publication date
DE3566508D1 (en) 1989-01-05
IT8420766A1 (it) 1985-11-02
IT8420766A0 (it) 1984-05-02
IT1173945B (it) 1987-06-24
EP0160343A3 (en) 1987-08-19
ATE38949T1 (de) 1988-12-15
EP0160343A2 (fr) 1985-11-06

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