EP0536860B1 - Prägevorrichtung - Google Patents

Prägevorrichtung Download PDF

Info

Publication number
EP0536860B1
EP0536860B1 EP92250279A EP92250279A EP0536860B1 EP 0536860 B1 EP0536860 B1 EP 0536860B1 EP 92250279 A EP92250279 A EP 92250279A EP 92250279 A EP92250279 A EP 92250279A EP 0536860 B1 EP0536860 B1 EP 0536860B1
Authority
EP
European Patent Office
Prior art keywords
stamping
wheel
embossing
spokes
stamping device
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
EP92250279A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0536860A1 (de
Inventor
Mahmoud Al-Obaidi
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.)
Gerhard Flemming & Hermann Pehrsson GmbH
Original Assignee
Gerhard Flemming & Hermann Pehrsson 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 Gerhard Flemming & Hermann Pehrsson GmbH filed Critical Gerhard Flemming & Hermann Pehrsson GmbH
Publication of EP0536860A1 publication Critical patent/EP0536860A1/de
Application granted granted Critical
Publication of EP0536860B1 publication Critical patent/EP0536860B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B44B5/0076—Machines or apparatus for embossing decorations or marks, e.g. embossing coins having a series of embossing tools each of which can be brought into working position
    • 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

  • the invention relates to an embossing device of the type specified in the preamble of claim 1.
  • Embossing devices with type wheels which have permanently mounted embossing elements (types).
  • An example EP-A-0 091 579 can be found for such a device.
  • these have the disadvantage that it is necessary to procure a relatively expensive part even if a type is damaged or lost. Conversion to changed character combinations is also not possible.
  • a common disadvantage of these embossing devices is that the working speed is relatively limited because the stamping accuracy decreases at higher speeds.
  • DE-U-9017494 describes an embossing wheel with an inner ring area, from which spring tongues project radially outwards, each with an open slot at the spring tongue end.
  • a type carrier provided with suitably shaped plug-in grooves is inserted in a form-fitting manner, which is additionally secured in the recess by a specially curved spring member which encloses its radially outer end face.
  • FR-A-603909 shows an embossing wheel in which the type carriers are each held by a short, radially running spring in square recesses against the wheel plane against the spring force
  • DE-A-2716067 shows a type disk for a setting machine, which has a similarity to the generic embossing device with regard to the design of the spokes holding the type carrier.
  • the invention specified in the characterizing part of claim 1 is based on the object of specifying an embossing device of the type mentioned, in which an exact positioning of the types with respect to the workpiece is ensured even at high working speeds.
  • the invention is based on the knowledge that the inaccuracies to be observed in the previous embossing devices have their cause in spinning movements of the embossing element fastened to an elastic spoke.
  • the embossing element has a relatively large weight to achieve a high stability. Since, on the one hand, relatively high accelerations are necessary at high working speeds and, on the other hand, the suspension of the embossing elements must be sufficiently elastic to accommodate the working stroke, the embossing elements do not have enough time at high working speed after braking to return to their rest position.
  • the measures according to the invention ensure, via an additional guide, that the types can migrate only slightly from their rest and embossing positions in the tangential direction. This ensures embossing with high precision.
  • the embossing elements are cylindrical, the chambers forming corresponding hollow cylindrical recesses in which the embossing elements slide to carry out the embossing stroke.
  • the hollow cylindrical recesses of the chambers are open towards the bottom and lid and thus passages for form the character shape to be embossed or the plunger pushing down the embossing element, neither the embossing process nor the access of the plunger to the rear surface of the embossing element is impeded.
  • the spokes are angled and open parallel to the axis of the embossing wheel.
  • the individual types together with their spokes can be easily replaced and are precisely positioned through bores in the embossing wheel, the ends of the embossing wheel being inserted into these bores parallel to the axis of the embossing wheel.
  • the inner ends of the spokes are secured against sliding out and twisting by means of a tension disk which presses the inner ends of the spokes against a radially directed stop surface of the embossing wheel.
  • the tensioning disk is advantageously screwed to the hub of the embossing wheel.
  • the embossing wheel consists of a light metal such as aluminum or titanium and, in the former case, is preferably provided with a coating of titanium, which increases the resistance of the surface.
  • the embossing wheel shown in FIG. 1 belongs to an embossing device, such as that which corresponds in principle to the embossing device shown in European patent application EP-A-0 091 579 by the same applicant.
  • the embossing wheel is positioned one after the other so that the individual embossing element (type) is above the workpiece in the position to be embossed.
  • An anvil approaches the embossing element from its rear surface and presses the symbol present on the embossing element in mirror image into the material surface of the workpiece.
  • the characters to be embossed on embossing elements 2 are connected to a hub 4 of the embossing wheel by means of radial elastic spokes 3.
  • the embossing elements are guided in chambers 5 of the embossing wheel at least in the tangential direction.
  • the embossing element is mainly used during the braking process supported laterally so that it cannot move out of the position which is predetermined by the positioning of the embossing wheel.
  • the embossing elements 2 are cylindrical and the chambers 5 form corresponding hollow cylindrical recesses in which the embossing elements slide.
  • the hollow cylinders have a slight oversize, so that the types can be moved without significant friction.
  • the hollow cylindrical recesses of the chambers are open towards the bottom and lid and thus form passages for the character shape to be embossed or for the plunger to depress the embossing element.
  • the recesses 5 forming the chambers are followed by further radially directed recesses 6 which receive the spoke when the embossing element is depressed for embossing.
  • the spokes have an additional lateral guide and there is a space for the actuation of the types via the elastic spokes 3 radially inserted into them, which are firmly connected at their other end to the hub 4 of the embossing wheel.
  • the spokes 3 are angled and open in one area 7 parallel to the axis of the embossing wheel. The ends of the angled ends of the spokes are inserted into bores 8 directed parallel to the axis of the embossing wheel.
  • the inner ends of the spokes are secured against sliding out and twisting by means of a clamping disk 9, which presses the inner ends of the spokes against a radially directed stop surface 11 of the embossing wheel.
  • the tensioning disk maintains a distance from the stop surface which corresponds approximately to the spoke diameter, the tensioning disk being screwed to the hub of the stamping wheel.
  • the embossing wheel consists of a light metal such as aluminum or titanium, so that the inertial forces that occur are low. To further reduce the mass, the wheel has essentially circular recesses with a diameter, which leave webs between the edge supporting the chambers and the hub, which have sufficient strength and rigidity to form a rigid connection, which prevents deformation which adversely affects the setting accuracy.
  • the embossing wheel has a coating of titanium that is a few ⁇ thick.
  • An eccentric bore 12 in the vicinity of the central axial bore 13 serves for the angularly accurate transmission of the shaft position when the stamping wheel is positioned.

Landscapes

  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Braking Arrangements (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Confectionery (AREA)
  • Cereal-Derived Products (AREA)
EP92250279A 1991-10-02 1992-10-02 Prägevorrichtung Expired - Lifetime EP0536860B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9112442U DE9112442U1 (de) 1991-10-02 1991-10-02 Prägevorrichtung
DE9112442U 1991-10-02

Publications (2)

Publication Number Publication Date
EP0536860A1 EP0536860A1 (de) 1993-04-14
EP0536860B1 true EP0536860B1 (de) 1997-01-22

Family

ID=6871990

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92250279A Expired - Lifetime EP0536860B1 (de) 1991-10-02 1992-10-02 Prägevorrichtung

Country Status (4)

Country Link
EP (1) EP0536860B1 (es)
AT (1) ATE148052T1 (es)
DE (2) DE9112442U1 (es)
ES (1) ES2096711T3 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103691983B (zh) * 2013-12-31 2015-10-21 江苏天宏机械工业有限公司 一种在线式轮毂强制报废钻孔机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE431218C (de) * 1924-10-02 1926-07-06 Rodange & Cie Fa Praegemaschine, deren die Matrizen und Patrizen tragende Scheiben gleichachsig und in parallelen Ebenen angeordnet sind
US3371766A (en) * 1966-07-18 1968-03-05 Internat Telephone & Telegraph Printing apparatus
DE2009683C3 (de) * 1970-03-02 1974-05-09 Kusutugu Osaka Takebe (Japan) Medaülenprägemaschine
DE2716067A1 (de) * 1976-04-13 1977-11-10 Monotype Corp Ltd Typenscheibe fuer eine anschlagzeichen-setzmaschine
DE9017494U1 (de) * 1990-12-27 1991-05-16 Otto Borries KG, 7022 Leinfelden-Echterdingen Typenrad für Prägemaschinen

Also Published As

Publication number Publication date
ES2096711T3 (es) 1997-03-16
EP0536860A1 (de) 1993-04-14
DE59207938D1 (de) 1997-03-06
DE9112442U1 (de) 1991-12-12
ATE148052T1 (de) 1997-02-15

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