EP0151204B1 - Presse à frapper les monnaies - Google Patents

Presse à frapper les monnaies Download PDF

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Publication number
EP0151204B1
EP0151204B1 EP84101317A EP84101317A EP0151204B1 EP 0151204 B1 EP0151204 B1 EP 0151204B1 EP 84101317 A EP84101317 A EP 84101317A EP 84101317 A EP84101317 A EP 84101317A EP 0151204 B1 EP0151204 B1 EP 0151204B1
Authority
EP
European Patent Office
Prior art keywords
ejector
lever
coining
ram
embossing
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
EP84101317A
Other languages
German (de)
English (en)
Other versions
EP0151204A1 (fr
Inventor
Kurt Finsterwalder
Rainer Güthle
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.)
L Schuler GmbH
Original Assignee
L Schuler GmbH
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 L Schuler GmbH filed Critical L Schuler GmbH
Priority to EP84101317A priority Critical patent/EP0151204B1/fr
Priority to DE8484101317T priority patent/DE3469146D1/de
Priority to US06/696,712 priority patent/US4615203A/en
Publication of EP0151204A1 publication Critical patent/EP0151204A1/fr
Application granted granted Critical
Publication of EP0151204B1 publication Critical patent/EP0151204B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • B44B5/0052—Machines or apparatus for embossing decorations or marks, e.g. embossing coins by pressing
    • B44B5/0057—Machines or apparatus for embossing decorations or marks, e.g. embossing coins by pressing using more than one die assembly simultaneously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/08—Accessories for handling work or tools
    • B21J13/14—Ejecting devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/32—Discharging presses

Definitions

  • the invention relates to a coin press with an embossing plunger drive from a triangle lever driven by a crankshaft via a central bearing, which is articulated with a rear swing arm bearing on a handlebar and via the frame side and with a front swing arm bearing via a push rod on the embossing plunger, and with one of the Tappet drive derived from a deflection drive Drive of the ejector stamp to produce an ejection movement which occurs essentially simultaneously with the movement of the tappet from the front dead center to the rear dead center.
  • the object of the invention is to provide a device for avoiding damage to the ejector system and the embossing tool and for the controlled prevention of the ejector activity or effectiveness, which engages in one and the same articulation point of the ejector lever.
  • the deflecting drive is constructed from a pressure rod articulated directly on the embossing plunger and a one-armed ejector lever which rests against the ejector embossing stamp at one end on the end of the pressure rod facing away from the plunger-side linkage and with a region of its length second end of the ejector lever is attached to the movable part of an otherwise piston cylinder unit which is fixed to the frame and which, in the sense of a pressure system of the ejector lever, is prestressed in terms of pressure on the ejector embossing stamp, possibly via an ejector rod.
  • the transmission means for the tappet movement on the ejector lever are limited to a few means according to claim 2, so that there is no large accumulation of tolerance.
  • the first-mentioned publication shows a transmission lever which is moved by the drive of an embossing plunger and which acts on one end of a two-armed ejector lever.
  • the ejector lever is placed with its second end against an ejector rod and articulated in the middle of its lever length via an eccentric drive in order to interrupt the ejector activity (lift outlet control).
  • the second-mentioned publication shows an ejector device with an ejector extender which can be pivoted into the extension of the ejector rod via a piston-cylinder unit.
  • a motor-driven crankshaft 3 is rotatably mounted for driving the central bearing 4 of a push rod 5, which is designed in the manner of a triangular lever.
  • a push rod 5 which is designed in the manner of a triangular lever.
  • the front rocker bearing 6 is articulated via a push rod 11 on the tappet 12 at the pivot point 19.
  • the plunger 12 is in the printing direction, this lies in the punch center line 15, is longitudinally displaceable in the frame and bears on it the end part opposite the fulcrum 19, the embossing die 16.
  • the embossing die 16 works together with the embossing tool and in particular with the ejector embossing stamp 17 if an embossing piece 13 is oriented in the embossing tool.
  • the embossing piece 13 can, for example, be guided into the embossing tool via a feed plate 18 and, after the embossing, can be led out of this area by means of the feed plate.
  • the feed plate can be rotated at 44 and is adjustable by means of a stepping device.
  • the step drive can also be done from the press drive.
  • the feed plate can be swiveled out of the embossing area for the tool change.
  • Position 27 indicates the position of the embossing piece 13 and the embossing surfaces of the embossing die 16 and the ejector embossing die 17.
  • the latter interacts with an ejector rod 31, which can be actuated via a deflection drive, which will be described later, in the direction of an ejector movement guided in the punch center line 15.
  • a deflection drive which will be described later
  • FIGS. 2 and 3 show in particular the phases of the manufacture of the stamped part as a function of the rotary movement of the central bearing 4.
  • the frame-side link bearing 9 is arranged with respect to the punch center line 15 on the side opposite the crankshaft 3.
  • the link 8 is movable with the connected rear swing arm bearing 7 around the link bearing 9 in a circular arc with the radius dimension corresponding to the length of the link.
  • the distance from the center of the rear rocker bearing 7 to the center of the center bearing 4 is greater than the maximum possible distance from the center of the center bearing 4 to the punch center line 15, measured as the distance between the center of the center bearing 4 and the center of the rear rocker bearing 7.
  • the distance from the center of the front Swing arm bearing 6 to the middle of the rear swing arm bearing 7 and the distance from the center of the front swing arm bearing 6 to the center of the central bearing 4 is designed such that the center of the front swing arm bearing 6 whenever the central bearing 4 assumes a position that corresponds to the front dead center T v of the tappet 12, on the side to the punch center line 15, which is to be assigned to the frame-side link bearing 9.
  • the center bearing 4 is in a position which corresponds to the rear dead center T h of the tappet 12, the center of the front rocker bearing 6 lies on the side of the punch center line 15 which is to be assigned to the crankshaft 3.
  • T h in the right curve part of curve 43 marks the start of the dead center position of the tappet 12, while the crankshaft 3, central bearing 4 and triangular lever 5 continue to move.
  • the crankshaft 3 rotates in the direction of the arrow 38, the embossing piece is changed after reaching the rear dead center.
  • the embossing piece is carried into the embossing tool by the embossing stamp 16.
  • the acceleration phase is ended approximately at point 41; the tappet is braked at 41 until it reaches the front dead center T v as a result of the movement of the front rocker bearing 6 into the left curve part.
  • the finished embossed part for example a coin or medal
  • the takeover of the coin into the feed plate 18 takes place here in a period of greatly slowing movement of the plunger up to approximately the point 42 shown.
  • the front rocker bearing 6 articulated via the push rod 11 on the plunger 12 is thus via the closed oscillating path 43, taking the plunger with it drivable and the ejector stamp 17 is at least for the area of the return movement of the plunger via the deflection gear in the sense of an ejector movement, so that for the time after embossing the finished part by the stamp 16 and the ejector stamp 17 and between them until delivery to the Feed plate 18 is guided on all sides, possibly including a slight game.
  • Fig. 4 shows that in the frame 2 of the Minting press 1 in slide bearings 34, plunger 12 with a pivot point 29, in which a push rod 26 is rotatably mounted via a screw thread attachment 30 and a spherical bearing 28 inserted therein.
  • the push rod 26 is also connected to an end 21 of an ejector lever 20 via a screw thread attachment 30 and a spherical bearing (not shown).
  • the screw thread approaches 30 this the length adjustment of the push rod 26, the spherical bearing 28 for angular position compensation of the push rod 26 as it moves.
  • the ejector lever 20 is likewise pivotable with the end 24 opposite its first articulation point at 21, but is connected to the piston or to the cylinder of a working piston-cylinder unit 25, which can be attached to the frame 2 at a pivot point 35 or fixed to the frame.
  • a working piston-cylinder unit 25 which can be attached to the frame 2 at a pivot point 35 or fixed to the frame.
  • an adjustment bolt 37 which acts on the protruding end of the ejector rod 31.
  • the working piston-cylinder unit is via the pressure connections 45 z. B. pressurized with a hydraulic fluid such that a fixed point 46 is formed for the ejector lever 20 for normal undisturbed ejector operation.
  • the pressure level must be set to such a value that the ejector lever 20 can deflect at point 46 in the event that, for example, two embossing pieces are present between the embossing tool, and the pressure pin 37 can be moved in the direction opposite the arrow direction 14.
  • the evasion of the ejector lever 20 in such a case can be determined via a presence sensor 33 and can lead to the switching off of the drive of the coin stamping press.
  • the working piston-cylinder unit 25 is to be guided fixed to the frame at 47 for a deflection movement of the ejector lever 20.
  • the working piston-cylinder unit 25 also has the task of lifting the pressure pin 37 from the end of the ejector rod 31 or from the ejector punch 17 in a controlled manner via the pressure lines 45 in order to eject the action for a multiple stroke z. B. to prevent embossing or glossy embossing. To do this, it is necessary to stop the feed plate 18 (FIG. 1) or to fill only every second or third filling point in the feed plate. The control must take place via the press control. No protection is sought for the control means. These means can be carried out with simple means and are easy to imagine, so that their graphic representation can be dispensed with.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Press Drives And Press Lines (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Transmission Devices (AREA)

Claims (3)

1. Presse à frapper les monnaies ou les médailles, comportant une commande de coulisseau de frappe constituée d'une bielle formant un levier triangulé (5), mû par un vilebrequin (3) avec interposition d'un palier central (4), qui est articulé par un palier de bielle arrière (7) à une barre oscillante (8) et par l'intermédiaire de cette barre (8) au bâti, et qui est articulé par un palier de bielle avant (6) et par l'intermédiaire d'une barre de compression (11) au coullisseau de frappe (12), la presse comportant en outre une commande du poinçon de frappe/éjection (17), commande qui est dérivée par une transmission de renvoi (20, 26) de la commande du coulisseau et qui est destinée à produire un mouvement d'éjection (14) s'effectuant essentiellement en même temps que le mouvement du coulisseau (12) de son point mort avant (Tv) à son point mort arrière (Th), caractérisée en ce que la transmission de renvoi est réalisée d'une barre de compression (26) articulée directement sur le coulisseau de frappe (12) et d'un levier d'éjection (20) à bras unique, levier qui est articulé par une extrémité (21) à l'extrémité (22) de la barre de compression (26) se trouvant à l'opposé de l'articulation de cette barre sur le coulisseau, et qui s'applique par une partie de sa longueur contre le poinçon de frappe/éjection (17, 31), et que la seconde extrémité (24) du levier d'éjection (20) est reliée à la partie mobile d'un vérin (25) commandé par un fluide de pression et dont l'autre partie est solidaire du bâti, vérin qui est précontraint, par le fluide de pression, dans le sens de l'application du levier d'éjection (20) contre le poinçon de frappe/éjection (17), en exerçant une pression sur ce poinçon, éventuellement par l'intermédiaire d'une barre d'éjection (31).
2. Presse selon la revendication 1, caractérisée en ce que la barre de compression (26) de la transmission de renvoi est reliée par des joints sphériques (28) à un point d'articulation (29) du coulisseau (12) et au levier d'éjection (20) et que sa longueur est variable grâce à la prévision de bouts filetés (30) à ses extrémités (22, 32).
3. Presse selon la revendication 1, caractérisée en ce qu'un capteur de présence (33) est fixé au bâti de la presse dans la région du vérin (25) et en liaison fonctionnelle avec le levier d'éjection (20) pour, en cas de présence de deux pièces à frapper entre l'outillage de frappe, par suite du mouvement d'écartement qui en résulte du levier d'éjection (20), arrêter la commande de la presse.
EP84101317A 1984-02-09 1984-02-09 Presse à frapper les monnaies Expired EP0151204B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP84101317A EP0151204B1 (fr) 1984-02-09 1984-02-09 Presse à frapper les monnaies
DE8484101317T DE3469146D1 (en) 1984-02-09 1984-02-09 Coining press
US06/696,712 US4615203A (en) 1984-02-09 1985-01-31 Coining press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84101317A EP0151204B1 (fr) 1984-02-09 1984-02-09 Presse à frapper les monnaies

Publications (2)

Publication Number Publication Date
EP0151204A1 EP0151204A1 (fr) 1985-08-14
EP0151204B1 true EP0151204B1 (fr) 1988-02-03

Family

ID=8191760

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84101317A Expired EP0151204B1 (fr) 1984-02-09 1984-02-09 Presse à frapper les monnaies

Country Status (3)

Country Link
US (1) US4615203A (fr)
EP (1) EP0151204B1 (fr)
DE (1) DE3469146D1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806352A1 (de) * 1988-02-27 1989-09-07 Schuler Gmbh L Vorrichtung zum auswerfen von werkstuecken aus matrizen in einer umformpresse
DE4334793A1 (de) * 1993-10-13 1995-04-20 Schuler Gmbh L Münzprägepresse zum Prägen oder Lochen
DE4411900C2 (de) * 1994-04-07 2002-07-04 Graebener Pressensysteme Gmbh Prägepresse, insbesondere Münzprägepresse
DE10150101B4 (de) * 2000-09-23 2008-09-11 Schuler Pressen Gmbh & Co. Kg Presse und Verfahren zum Umformen von Werkstücken
JP2002109596A (ja) * 2000-09-28 2002-04-12 Nippon Conlux Co Ltd 貨幣識別方法及び装置
DE102017124148A1 (de) 2017-10-17 2019-04-18 Schuler Pressen Gmbh Prägepresse und Verfahren zum Prägen einer Ronde

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH53627A (de) * 1910-06-11 1912-03-16 Silvio Bigazzi Dispositif pour le découpage de rondells et autres objets de forme annulaire
CH383167A (de) * 1960-06-13 1964-10-15 Smeralovy Z Narodni Podnik Auswerfvorrichtung für automatische Pressen, insbesondere für Stufenpressen
US3122033A (en) * 1962-02-02 1964-02-25 Eumuco Ag Fur Maschb Die forging press
US3661008A (en) * 1970-03-17 1972-05-09 Wickman Mach Tool Sales Ltd Presses
GB1516841A (en) * 1975-08-04 1978-07-05 Lamberton & Co Ltd Ejector mechanisms in machine presses
SU1027066A1 (ru) * 1981-08-26 1983-07-07 Воронежское производственное объединение по выпуску тяжелых механических прессов "Воронежтяжмехпресс" Нижний выталкиватель пресса дл объемной штамповки

Also Published As

Publication number Publication date
EP0151204A1 (fr) 1985-08-14
DE3469146D1 (en) 1988-03-10
US4615203A (en) 1986-10-07

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