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EP3587626B1 - Dekorteil, das durch inlayarbeiten erstellt wird - Google Patents

Dekorteil, das durch inlayarbeiten erstellt wird Download PDF

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Publication number
EP3587626B1
EP3587626B1 EP18180563.1A EP18180563A EP3587626B1 EP 3587626 B1 EP3587626 B1 EP 3587626B1 EP 18180563 A EP18180563 A EP 18180563A EP 3587626 B1 EP3587626 B1 EP 3587626B1
Authority
EP
European Patent Office
Prior art keywords
support
hollow
aesthetic element
visible
inlaying
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.)
Active
Application number
EP18180563.1A
Other languages
English (en)
French (fr)
Other versions
EP3587626A1 (de
Inventor
Johan ROMAND
Damien LE BOUDOUIL
Nicolas Aubry
Pierry Vuille
Alexandre Netuschill
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.)
Comadur SA
Original Assignee
Comadur SA
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 Comadur SA filed Critical Comadur SA
Priority to EP18180563.1A priority Critical patent/EP3587626B1/de
Priority to US17/056,262 priority patent/US20210240138A1/en
Priority to CN201980038134.3A priority patent/CN112236549B/zh
Priority to PCT/EP2019/066956 priority patent/WO2020002402A1/fr
Priority to KR1020207034176A priority patent/KR102491225B1/ko
Priority to JP2020564933A priority patent/JP6980933B2/ja
Publication of EP3587626A1 publication Critical patent/EP3587626A1/de
Application granted granted Critical
Publication of EP3587626B1 publication Critical patent/EP3587626B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
    • G04B45/0076—Decoration of the case and of parts thereof, e.g. as a method of manufacture thereof
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/06—Dials
    • G04B19/18—Graduations on the crystal or glass, on the bezel, or on the rim
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases
    • G04B37/225—Non-metallic cases
    • G04B37/226—Non-metallic cases coated with a metallic layer
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C27/00—Making jewellery or other personal adornments
    • A44C27/001—Materials for manufacturing jewellery
    • A44C27/005—Coating layers for jewellery
    • A44C27/007—Non-metallic coatings

Definitions

  • the present invention relates to a process for manufacturing a decorative piece comprising a step of inlaying by hot pressing a crystalline metal alloy in a support, in particular ceramic, and to the decorative piece resulting from the process.
  • Another process described in the document EP 2 315 673 consists of inlaying the aesthetic elements by pressing into the recesses made in the support.
  • This document describes more particularly a method of inlaying by hot pressing an aesthetic element made of amorphous metallic material within a ceramic support to form, for example, indices on a watch bezel.
  • the use of an amorphous metal for the inlay makes it possible to work under low stresses and temperatures without the risk of weakening the material of the support.
  • the lack of contrast between the amorphous metal and the ceramic support does not allow an optimal visual rendering to be obtained.
  • the method of manufacturing a decorative piece by inlaying an amorphous metal is relatively expensive because it requires adequate treatment to maintain the amorphous structure of the metal.
  • CH699993A2 is another relevant prior art document.
  • the present invention aims to provide a method of manufacturing a decorative piece comprising a step of inlaying by pressing a crystalline metal alloy in one or more hollows made in a support which is in particular made of ceramic.
  • the inlay of a crystalline metal aims to increase the contrast between the aesthetic element and its support and to reduce manufacturing costs.
  • the choice of the crystalline metal relates to an aluminum alloy which has the particular advantage of being deformable at low temperature compared to other crystalline metal alloys. The method according to the invention thus makes it possible to produce a decorative part comprising one or more aesthetic elements in aluminum, which is difficult to achieve with other methods, whether by PVD deposition or by electroforming.
  • the manufacturing process comprises, following the inlaying step and a possible mechanical grinding step, an electrochemical treatment aimed at modifying the surface condition of the inlaid aesthetic elements for the purpose of protection and/or aesthetic purposes.
  • This treatment may consist of selective anodization of said elements with or without coloring.
  • the support, in particular ceramic is not an electrical conductor, one or more of the recesses open out onto one face of the decorative part intended to be not visible in use.
  • These recesses communicating with the non-visible face form as many contact points making it possible to bring the current to the aesthetic elements to be treated electrochemically. Thanks to these non-visible contact points, it is possible to bring current to fine and numerous decorations such as to a tachymeter scale of a watch bezel.
  • a wide color palette and even color gradients can be achieved on these sets. It is also possible to encrust an aluminum alloy at a lower cost and then make it hard by anodizing. This electrochemical treatment is carried out on the inlaid decorations in their final surface condition: polished, satin-brushed, sandblasted and therefore at the end of the manufacturing process.
  • the present invention relates to a process for manufacturing a decorative piece by hot pressing, also called by inlaying, of one or more aesthetic elements in a support provided with one or more recesses and to the decorative piece resulting from the process.
  • the part can in particular be a horological exterior component such as a bezel, a dial, a case, a crown, a pusher, a crystal, a bracelet element, etc.
  • part 1 is a watch bezel comprising an annular body forming the support 2 provided with recesses 4 made in said support 2 to receive the aesthetic elements 3 forming the indices.
  • the aesthetic element is made of a crystalline metal alloy and more precisely of a crystalline aluminum alloy.
  • the support is itself preferably made of a material that is not very ductile. It may, for example, be a ceramic, sapphire, enamel, etc. Preferably, it is a ceramic and, more preferably, a zirconia.
  • the piece may consist of a zirconia watch bezel with indices made of an aluminum alloy. In particular, it may be the 7075 alloy which comprises zinc up to ⁇ 6% by weight.
  • the aluminum alloy has the advantage of being malleable at low temperature due to its low melting point of around 650°C.
  • the support 2 comprises at least one recess 4 made by laser engraving, by machining, etc.
  • the recess 4 has on the surface 2a of the support 2 intended to be visible a shape 4a corresponding to the outline of the desired decoration.
  • This hollow 4 can be blind ( figure 2 ) or lead to a non-visible face 2b of the support 2 ( figure 10 ).
  • the entire volume of the recess 4 is filled with the aesthetic element 3 protruding from or flush with the surface 2a of the support 2.
  • the aesthetic element it is also possible for the aesthetic element to only partially fill the volume of the recess.
  • the recess 4 has flanks 7 with a suitable geometry for optimal retention of the aesthetic element within the recess.
  • the sides 7 can be substantially perpendicular to the visible surface 2a of the support 2 with the aesthetic element held by friction within the recess.
  • the sides are at least partially inclined with a narrowing in the direction of the visible surface preventing the movement of the aesthetic element outside the recess.
  • the sides 7, whether they are inclined or not are pierced with housings 5 which, after filling with the aesthetic element, form a stop which, like the inclined walls, prevents the movement of the aesthetic element.
  • protrusions 6 can be arranged in the recess 4 to provide a similar role of holding means for the aesthetic element.
  • the aesthetic elements are inlaid by hot pressing in the recesses of the support at a temperature between the solidus temperature and the liquidus temperature of the aluminum alloy constituting the aesthetic element typically between 500 ° C and 650°C. More specifically, the inlay steps of the manufacturing process according to the invention are illustrated schematically using the figures 3 to 7 .
  • the support 2 provided with the recess(es) 4 is made available ( fig.3 ).
  • the preform(s) intended to form the aesthetic element(s) 3 are made available.
  • the aesthetic element to be embedded is in the form of an annular preform with a diameter and a ring width of dimensions substantially equivalent to those of the indices.
  • an anti-adherent layer e.g. boron nitride
  • the support is preheated to avoid thermal shock.
  • the preheating temperature is between 300 and 500°C.
  • the preform 3 is placed on the surface 2a of the support 2 at the level of the hollow 4 ( fig.4 ).
  • the assembly is placed in a press where the preform is heated to a temperature between the solidus and the liquidus of the material constituting the preform, which makes it possible to soften the material before carrying out the pressing.
  • a pressure P is applied to the preform 3 to fill the recesses 4 with the aluminum alloy ( fig.5 and fig.6 ).
  • the load during embedding is maintained at a value of less than 1000 kg to avoid damaging the support. This load is advantageously between 500 and 800 kg.
  • This pressing cycle can be carried out in several stages with a preload stage before increasing the pressure to the desired maximum pressure.
  • the step of embedding the aluminum alloy in the hollows is then followed by a cooling step and a possible mechanical grinding step such as polishing to remove the surplus of the aesthetic element. 3 ( fig.7 ) and achieve visible surfaces of the support and the aesthetic element connected to each other without solution of continuity.
  • the aesthetic element is subjected to a finishing treatment.
  • This treatment can consist of a selective electrochemical treatment of the encrusted metallic material, and more precisely, of anodization with or without coloring to modify the appearance and/or the hardness of the encrusted material.
  • the supports targeted by the present invention being mainly electrically non-conductive, the difficulty lies in the routing of the current to the aesthetic elements during the electrochemical treatment and, this, via contact points which must imperatively be not visible on the decorative piece. .
  • one or more of the recesses are configured to open out onto a face intended to be invisible from the decorative part. These hollows opening onto the non-visible face form as many contact points making it possible to bring the current to the inlaid aesthetic elements.
  • the recess 4 for each of the indices opens onto the rear face 2b of the bezel 1 as illustrated in figure 10 .
  • the contact points 4b make it possible to bring the current to each of the indicia during the electrochemical treatment.
  • These contact points 4b on the rear face 2b of the support 2 may have a section which is less than that of the part 4a of the recess opening onto the visible face 2a of the support 2.
  • These contact points make it possible to carry out the same electrochemical treatment for each index or possibly to combine different treatments and therefore colors by bringing the current to only one or more of the indices for each electrochemical treatment.
  • the aesthetic element 3 is larger in size, as in the examples of figure 11A And 12B , several contact points per aesthetic element may be required to ensure uniform electrochemical treatment of the aesthetic element.
  • three aesthetic elements 3 are distributed over an annular portion of the visible face 2a of the bezel 1.
  • the aesthetic elements 3 are inlaid on the substrate 2 including the indicia made of a non-conductive material .
  • the bezel 1 is provided with several orifices 4b communicating with the recesses 4 to produce the contact points allowing the current to be brought to these three elements.
  • two contact points 4b are provided per aesthetic element 3.
  • the figures 12B and 12C represent another configuration of an aesthetic element inlaid in aluminum in a hollow formed in a support.
  • the aesthetic element 3 extends as far as a horn 8a of the middle part of the watch case 8 and comprises housings 3a for setting stones 9.
  • the recess receiving the aesthetic element opens at least in one place on a non-visible face of the watch case. It is thus conceivable that the recess 4 communicates with the bar hole 10 as illustrated in the Figure 12A .
  • the hollow 4 can communicate in several places by other openings allowing contact points to be made bringing the current to the aesthetic element 3
  • the present invention thus makes it possible, thanks to the electrical contact point(s) provided (s) on a non-visible face of the watch case to electrochemically treat the aesthetic element after crimping with the stones.
  • the present invention has been more specifically illustrated for a decorative part in watchmaking, but it goes without saying that the method according to the invention applies to the production of decorative parts in many other fields such as jewelry, telephony, automobiles, etc.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Adornments (AREA)

Claims (20)

  1. Verfahren zur Herstellung eines Teils (1), umfassend einen Träger (2), der mit mindestens einer Vertiefung (4) versehen ist, die mit einem ästhetischen Element (3) gefüllt ist, das eine Verzierung auf einer Seite (2a) des Teils (1) bildet, die sichtbar sein soll, wobei das Verfahren die folgenden Schritte umfasst:
    - Bereitstellen des Trägers (2), der mit der mindestens einen Vertiefung (4) versehen ist, und Bereitstellen eines Vorformlings, der dazu bestimmt ist, das ästhetische Element (3) des Teils (1) zu bilden, wobei die Vertiefung an mindestens einer Stelle auf einer nicht sichtbaren Seite des ästhetischen Elements mündet,
    - Einlegen des Vorformlings durch Heißpressen in die mindestens eine Vertiefung (4) des Trägers (2),
    und das Verfahren dadurch gekennzeichnet ist, dass der Vorformling aus einer kristallinen Aluminiumlegierung hergestellt wird, wobei der Schritt des Einlegens bei einer Temperatur zwischen der Solidustemperatur und der Liquidustemperatur der kristallinen Aluminiumlegierung durchgeführt wird.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Träger (2) aus einem Material gefertigt ist, das aus Keramik, Saphir und Emaille ausgewählt ist.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Träger (2) aus einer Keramik auf Zirkonoxidbasis hergestellt ist.
  4. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die kristalline Aluminiumlegierung die Legierung 7075 ist.
  5. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Träger (2) vor dem Einlegevorgang auf eine Temperatur zwischen 300 und 500 °C vorgeheizt wird.
  6. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schritt des Einlegens durch Heißpressen unter einer Last zwischen 500 und 1000 kg durchgeführt wird.
  7. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schritt des Einlegens durch Heißpressen bei einer Temperatur zwischen 500 und 650 °C durchgeführt wird.
  8. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es nach dem Schritt des Einlegens einen Schritt der Oberflächenbehandlung des ästhetischen Elements (3) auf elektrochemischen Weg umfasst.
  9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass der Schritt der Oberflächenbehandlung auf elektrochemischem Weg nach einem mechanischen Schleifschritt durchgeführt wird, der auf den Schritt des Einlegens folgt.
  10. Verfahren nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass die mindestens eine Vertiefung (4) an einer oder an mehreren Stellen auf einer Seite (2b) des Teils (1), die nicht sichtbar sein soll, mündet, um jeweils eine oder mehrere Kontaktstellen (4b) zu bilden, über die Strom zugeführt werden kann bei der Oberflächenbehandlung des ästhetischen Elements (3).
  11. Teil (1), umfassend einen Träger (2), der mit mindestens einer Vertiefung (4) versehen ist, die mit einem ästhetischen Element (3) gefüllt ist, das eine Verzierung auf einer sichtbaren Seite (2a) des Teils (1) bildet, wobei das ästhetische Element (3) aus einer kristallinen Aluminiumlegierung hergestellt ist und die Vertiefung an mindestens einer Stelle auf einer nicht sichtbaren Seite des ästhetischen Elements mündet.
  12. Teil (1) nach Anspruch 11, dadurch gekennzeichnet, dass der Träger (2) aus einem Material gefertigt ist, das aus Keramik, Saphir und Emaille ausgewählt ist.
  13. Teil (1) nach Anspruch 11 oder 12, dadurch gekennzeichnet, dass der Träger (2) aus einer Keramik auf Zirkonoxidbasis hergestellt ist.
  14. Teil (1) nach einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, dass die kristalline Aluminiumlegierung die Legierung 7075 ist.
  15. Teil (1) nach einem der Ansprüche 11 bis 14, dadurch gekennzeichnet, dass die mindestens eine Vertiefung (4) an einer oder an mehreren Stellen auf einer Seite (2b) des Teils (1), die nicht sichtbar sein soll, mündet.
  16. Teil (1) nach einem der Ansprüche 11 bis 15, dadurch gekennzeichnet, dass es sich um ein Ausstattungsteil für Uhren oder Schmuck handelt.
  17. Teil (1) nach Anspruch 16, dadurch gekennzeichnet, dass es sich um eine Uhrenlünette handelt, die den Träger (2) bildet, der mit mindestens einer Vertiefung (4) versehen ist, die mit der kristallinen Aluminiumlegierung gefüllt ist, die als ästhetisches Element (3) einen Index oder einen ringförmigen Abschnitt der Lünette bildet.
  18. Teil (1) nach Anspruch 16, dadurch gekennzeichnet, dass es sich um einen Gehäusemittelteil handelt, der den Träger (2) mit mindestens einer Vertiefung (4) bildet, die mit der kristallinen Aluminiumlegierung gefüllt ist, die als ästhetisches Element (3) einen Abschnitt des Gehäusemittelteils bildet, der sich bis zu einem Anstösser (8a) des Gehäusemittelteils erstreckt.
  19. Teil (1) nach Anspruch 18, dadurch gekennzeichnet, dass die mindestens eine Vertiefung (4) mit einem in dem Anstösser (8a) angeordneten Stegloch (10) in Verbindung.
  20. Teil (1) nach einem der Ansprüche 11 bis 19, dadurch gekennzeichnet, dass das ästhetische Element (3) eine anodisierte Schicht umfasst.
EP18180563.1A 2018-06-28 2018-06-28 Dekorteil, das durch inlayarbeiten erstellt wird Active EP3587626B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP18180563.1A EP3587626B1 (de) 2018-06-28 2018-06-28 Dekorteil, das durch inlayarbeiten erstellt wird
US17/056,262 US20210240138A1 (en) 2018-06-28 2019-06-26 Decorative part made by inlaying
CN201980038134.3A CN112236549B (zh) 2018-06-28 2019-06-26 通过镶嵌制得的装饰性部件
PCT/EP2019/066956 WO2020002402A1 (fr) 2018-06-28 2019-06-26 Piece decorative realisee par incrustation
KR1020207034176A KR102491225B1 (ko) 2018-06-28 2019-06-26 인레잉으로 제조된 장식 부품
JP2020564933A JP6980933B2 (ja) 2018-06-28 2019-06-26 象嵌することによって製造される装飾部品

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18180563.1A EP3587626B1 (de) 2018-06-28 2018-06-28 Dekorteil, das durch inlayarbeiten erstellt wird

Publications (2)

Publication Number Publication Date
EP3587626A1 EP3587626A1 (de) 2020-01-01
EP3587626B1 true EP3587626B1 (de) 2023-02-22

Family

ID=62874567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18180563.1A Active EP3587626B1 (de) 2018-06-28 2018-06-28 Dekorteil, das durch inlayarbeiten erstellt wird

Country Status (6)

Country Link
US (1) US20210240138A1 (de)
EP (1) EP3587626B1 (de)
JP (1) JP6980933B2 (de)
KR (1) KR102491225B1 (de)
CN (1) CN112236549B (de)
WO (1) WO2020002402A1 (de)

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JP2008089533A (ja) * 2006-10-05 2008-04-17 Citizen Holdings Co Ltd 時計用文字板
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EP2138323A1 (de) * 2008-06-23 2009-12-30 The Swatch Group Research and Development Ltd. Dekorationselement, hergestellt durch Einlegearbeiten
CH699993A2 (fr) * 2008-11-28 2010-05-31 Swatch Group Res & Dev Ltd Procede de decoration tridimensionnelle.
EP2502877B1 (de) * 2011-03-23 2013-10-02 Patek Philippe SA Genève Verfahren zur Herstellung eines Verbundwerkstoffteils, insbesondere für Uhrwerk
KR20120111520A (ko) * 2011-04-01 2012-10-10 에스앤에스 몰드케미칼(주) 액세서리 제조방법 및 그 액세서리
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EP2628607B1 (de) 2012-02-15 2016-08-03 Omega SA Verankerungsvorrichtung einer Metall-Einlegearbeit
RU2621229C2 (ru) * 2012-05-30 2017-06-01 Те Свотч Груп Рисерч Энд Дивелопмент Лтд Керамический элемент, инкрустированный по меньшей мере одним декорированием из композиционной керамики
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Also Published As

Publication number Publication date
CN112236549B (zh) 2023-09-29
JP6980933B2 (ja) 2021-12-15
WO2020002402A1 (fr) 2020-01-02
CN112236549A (zh) 2021-01-15
EP3587626A1 (de) 2020-01-01
KR20210005701A (ko) 2021-01-14
KR102491225B1 (ko) 2023-01-20
US20210240138A1 (en) 2021-08-05
JP2021526206A (ja) 2021-09-30

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