EP3786721A1 - Klebeverfahren für uhrenkomponenten - Google Patents

Klebeverfahren für uhrenkomponenten Download PDF

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Publication number
EP3786721A1
EP3786721A1 EP19194407.3A EP19194407A EP3786721A1 EP 3786721 A1 EP3786721 A1 EP 3786721A1 EP 19194407 A EP19194407 A EP 19194407A EP 3786721 A1 EP3786721 A1 EP 3786721A1
Authority
EP
European Patent Office
Prior art keywords
component
watch
primer composition
layer
components
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.)
Withdrawn
Application number
EP19194407.3A
Other languages
English (en)
French (fr)
Inventor
Sylvain Huot-Marchand
Marco Verardo
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.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
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 ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP19194407.3A priority Critical patent/EP3786721A1/de
Priority to CN202080056808.5A priority patent/CN114341749B/zh
Priority to JP2022503515A priority patent/JP7302091B2/ja
Priority to US17/631,726 priority patent/US20220276610A1/en
Priority to KR1020227003972A priority patent/KR20220031922A/ko
Priority to EP20735065.3A priority patent/EP4022398B1/de
Priority to PCT/EP2020/065984 priority patent/WO2021037408A1/fr
Publication of EP3786721A1 publication Critical patent/EP3786721A1/de
Withdrawn legal-status Critical Current

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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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • 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
    • G04B15/00—Escapements
    • G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel
    • 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
    • G04B17/00—Mechanisms for stabilising frequency
    • G04B17/04—Oscillators acting by spring tension
    • G04B17/06—Oscillators with hairsprings, e.g. balance
    • 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
    • G04B19/10—Ornamental shape of the graduations or the surface of the dial; Attachment of the graduations to the dial
    • G04B19/103—Ornamental shape of the graduations or the surface of the dial; Attachment of the graduations to the dial attached or inlaid numbers
    • 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
    • G04B19/12—Selection of materials for dials or graduations markings
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
    • G04D3/0017—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of gearworks
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
    • G04D3/0028—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the escape mechanism
    • G04D3/003—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the escape mechanism for levers
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
    • G04D3/0035—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the regulating mechanism
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
    • G04D3/0043—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms
    • G04D3/0048—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms for dials
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
    • G04D3/0043—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms
    • G04D3/0051—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms for time markers

Definitions

  • the present invention relates to the field of watchmaking and relates more particularly to a method of bonding watch components aimed at forming a single unit assembly of watch components.
  • paddles or "lifters, generally in ruby) are fixed to the anchor by gluing, typically by means of a shellac dissolved in a solvent. alcohol.
  • Shellac is a natural hot-melt resin, i.e. it is honeyed at temperatures above its melting point (T f ) and solid below its melting point (T f ) or its glass transition temperature (T g ).
  • T f melting point
  • T f melting point
  • T g glass transition temperature
  • the result of the gluing does not comply with the requirements, either because the mechanical resistance of the pallet is insufficient, or because the aesthetics of the drop are in -out of specification. In either case, the cause of the nonconformity is often a surface tension problem.
  • Shellac is secreted by the female cochineal in the forests of Southeast Asia.
  • the composition of the lacquer strongly depends on the diet of the mealybugs and the harvest season.
  • the collected substance is purified and processed but the purity and composition obtained do not are never guaranteed. It is therefore very difficult if not impossible to guarantee the constant performance of this natural product over time.
  • the pallets are completely or partially epilamated as needed.
  • An epilame is a product which modifies in one direction or another the surface tension of the support. It usually takes the form of an invisible hydrophobic and oleophobic molecular layer, and is deposited to prevent spreading of a lubricant or its components.
  • the epilame grips the lubricant so that it stays in place or it pushes it back to keep it in well-defined areas. Thanks to epilamage, the surface tension is supposed to be controlled. However, it can be seen that during the epilamage process, component cleaning operations are regularly used after potentially messy manufacturing steps. Such cleaning can at least partially degrade the epilame effect, which causes fluctuations in the surface properties to the detriment of the sticking of the pallets.
  • Another example of watch components assembled by gluing is found at the level of the balance and relates more precisely to the hairspring glued to its eyebolt.
  • An objective of the present invention is to provide a preparation of a watch component for bonding.
  • One aspect of the invention relates to a method of bonding watch components, comprising applying an adhesive to a first and / or a second watch component to be bonded to one another and forming a layer of 'bonding (primer, adhesion primer) on at least one of the first and second components to be bonded by spraying a primer composition in / on a localized binding zone on a portion of one face of each of these first and second components.
  • the glue is thus applied so as to form a layer of glue.
  • This application of the glue, or the formation of this layer of glue is then followed by the solidification of the primer composition.
  • the connection zone can be called the bonding zone.
  • the formation of the tack coat is carried out before the application of the adhesive if the adhesive is applied to the same component (s) as the tack coat and, if necessary, before putting in contact the first and second watch components.
  • the invention proposes in particular to deposit the bonding layer by projection. This can be done, for example, by means of Aerosol Jet technology (trademark of the company Optomec) or by any other digital printing technology. These technologies now allow the deposition of fluid materials in a very precise manner, both in terms of volume and location. They can be adapted to watch components, as indicated by patent applications. WO 2016/203063 and EP1172714 .
  • the present invention notably exploits the potential of precision of this deposition technology to prepare watch components for bonding.
  • the fact of using a bonding layer deposited by digital printing makes it possible to provide the components with a precisely delimited bonding zone and having a surface tension suitable for the adhesive. This makes it possible to use more resistant epilames which are not or only slightly wettable by the glue which it is desired to use.
  • the projection of the fluid primer composition is carried out by a projection nozzle movably mounted on a multi-axis robot arm to change its orientation with respect to the first and / or second components on which the tie layer is to be formed.
  • the projection of the primer composition can be carried out essentially vertically from top to bottom by a projection nozzle, the first and / or second component on which the tie layer is to be formed being in this case mounted movably. on a multi-axis robot arm to change its orientation relative to the projection nozzle.
  • This second possibility has the advantage that the jet can remain vertical, which will be able to facilitate a precise delimitation of the tie layer.
  • the primer composition may comprise a material curable by radiation (ultraviolet and / or electron beam) and in this case the solidification of the layer of primer composition is effected by exposure to the radiation.
  • the primer composition may also include a thermosetting material in which case the solidification of the primer composition layer is effected by heat treatment.
  • the primer composition may be in or the form of an ink comprising the primer composition dissolved or suspended in a solvent.
  • the primer composition could also be in the form of a polymeric resin (with or without mineral fillers) comprising reactive diluents instead of volatile solvents.
  • At least one of the first and second watch components to be bonded to one another is epilamed.
  • the tie layer can be formed on the epilamed watch component.
  • the glue could include shellac.
  • the glue could include epoxy glue.
  • this involves gluing one on the other of the watch components, at least one of which is epilamated by means of an adhesive comprising shellac.
  • the tie layer preferably has a chemical and / or physical affinity both for shellac and for epilame. It should be noted that the two watch components could be waxed.
  • the list of components that could be glued is not exhaustive.
  • the invention can be used to improve the bonding of watch components which are already currently fixed to one another by bonding (as in the case of the anchor and its pallets).
  • the invention could however be useful for allowing the bonding of watch components which are currently fixed by other means, (eg by clamping or riveting).
  • the bonding of these watch components would make it possible to avoid or at least reduce the deformation or breakage of the board due to riveting or flushing while ensuring cohesion between the board and its axis during the stresses applied to them.
  • the bonding layer could be based on polymer (s), for example polyurethane, acrylates or even epoxies. It will be noted that for the noble metals, certain products containing thiols can be used. It is understood that a person skilled in the art will choose the composition of the primer according to the nature of the watch components, respectively of the adhesive. It is noted that in the case of a primer composition based on polymers, polymers which undergo crosslinking (irreversible) are preferred. On the other hand, as regards the glue, for the bonding of certain components, a thermosetting glue is preferable while in other cases, one resorts rather to thermoplastic glue.
  • the various aspects of the invention make it possible to improve the bonding of watch components, to reduce the impact of soiling, to use more resistant epilames and / or to facilitate the application of the adhesive while respecting the criteria. drop quality (position, quantity).
  • Another aspect of the invention relates to a one-piece assembly of watch components comprising first and second components capable of being connected to one another using such a bonding process.
  • Another aspect of the invention relates to a timepiece comprising such a one-piece assembly of watch components.
  • the figures 1 and 2 schematically illustrate embodiments of a bonding method according to the invention.
  • the method according to the invention can be used to glue the pallets 12, 14 to the anchor 16 of the escapement 10 of a mechanical watch.
  • the figures show an escapement 10 with a Swiss lever. It includes an escape wheel 18, typically in hardened and polished steel.
  • the anchor 16 connects the escape wheel to the balance (the figures of which show the small plate 20, the large plate 22 and the axis 24) and can switch between two positions at the rate imposed by the balance and spring assembly. At each alternation, the escape wheel 18 gives an impulse to the anchor 16, which transfers it to the balance so as to maintain the oscillations of the latter.
  • the pallets 12, 14 are typically made of ruby, because of its hardness and its low coefficient of friction, glued to the anchor 16 by means of a shellac-based glue.
  • the pallets 12, 14 are completely or partially epilamated as required. Thanks to the invention, it is possible to have recourse to resistant epilames, because the bonding zones on the pallets 12, 14 can be prepared before the application of the shellac with the aid of a primer layer. , which adjusts the surface tension so as to satisfactorily allow wetting of the surface by the shellac.
  • the tie coat is formed by applying a primer composition by a direct digital printing process to the component. It is in particular possible to deposit the primer layer by spraying the primer composition in ink form 26. The quantity of ink and the position of each droplet are precisely controlled by a control unit 28 (eg a microprocessor.
  • the control unit 28 regulates in particular the position and the orientation of the component with respect to the nozzle for spraying the ink.
  • the possibility of orienting and positioning the projection nozzle 30 relative to the printing medium is schematically indicated by reference numeral 32.
  • the component being printed on could remain stationary during printing.
  • the projection of the primer composition is effected by a spray nozzle 30 movably mounted, eg on a multi-axis robot arm to change its orientation with respect to the component, i.e., in the illustrated case, the pallet 12 or 14 or the anchor 16.
  • the projection nozzle 30 remains oriented vertically from top to bottom during printing, and the component is in this case mounted movably, eg on a multi-axis robot arm, to change its orientation. relative to the projection nozzle 30.
  • the primer composition After deposition on the surface of the component, the primer composition is solidified. This should be done depending on the properties of the primer composition, eg by UV radiation or by electron beam in the case of radiation curable material, by heat treatment in the case of thermosetting material, by laser sintering (" laser sintering ”), or simply by evaporation of the solvent. It will be noted that such evaporation can be natural or forced.
  • the hardening method could combine several of these possibilities, eg to speed up hardening.
  • a tie coat can also be applied to the anchor 16.
  • the composition of the tie coat may be the same as that applied to the pallets 12, 14, provided that adhesion on the two types of components is quite strong.
  • different bonding layers will be used on the anchor 16 and the pallets 12, 14. In this context, these pallets 12, 14 and the anchor 16 then form a one-piece assembly of watch components.
  • FIG 1 schematically shows a mode in which the primer composition consists of a single fluid
  • the figure 2 illustrates the case where the primer composition is of the two-component type mixed in situ.
  • two reactive fluids 26a and 26b are brought together on the watch component in the bonding zone.
  • Another aspect of the invention relates to a timepiece comprising such a one-piece assembly of watch components.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Paints Or Removers (AREA)
EP19194407.3A 2019-08-29 2019-08-29 Klebeverfahren für uhrenkomponenten Withdrawn EP3786721A1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP19194407.3A EP3786721A1 (de) 2019-08-29 2019-08-29 Klebeverfahren für uhrenkomponenten
CN202080056808.5A CN114341749B (zh) 2019-08-29 2020-06-09 用于将钟表部件结合的方法
JP2022503515A JP7302091B2 (ja) 2019-08-29 2020-06-09 時計構成要素を結合するための方法
US17/631,726 US20220276610A1 (en) 2019-08-29 2020-06-09 Method for bonding timepiece components
KR1020227003972A KR20220031922A (ko) 2019-08-29 2020-06-09 시계 부품들을 접착하는 방법
EP20735065.3A EP4022398B1 (de) 2019-08-29 2020-06-09 Klebeverfahren für uhrenkomponenten
PCT/EP2020/065984 WO2021037408A1 (fr) 2019-08-29 2020-06-09 Procédé de collage de composants horlogers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19194407.3A EP3786721A1 (de) 2019-08-29 2019-08-29 Klebeverfahren für uhrenkomponenten

Publications (1)

Publication Number Publication Date
EP3786721A1 true EP3786721A1 (de) 2021-03-03

Family

ID=67809353

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19194407.3A Withdrawn EP3786721A1 (de) 2019-08-29 2019-08-29 Klebeverfahren für uhrenkomponenten
EP20735065.3A Active EP4022398B1 (de) 2019-08-29 2020-06-09 Klebeverfahren für uhrenkomponenten

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP20735065.3A Active EP4022398B1 (de) 2019-08-29 2020-06-09 Klebeverfahren für uhrenkomponenten

Country Status (6)

Country Link
US (1) US20220276610A1 (de)
EP (2) EP3786721A1 (de)
JP (1) JP7302091B2 (de)
KR (1) KR20220031922A (de)
CN (1) CN114341749B (de)
WO (1) WO2021037408A1 (de)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1551159A (de) * 1967-11-14 1968-12-27
FR2263549A1 (en) * 1974-03-05 1975-10-03 Ebosa Sa Watch balance mechanism assembly system - uses pallet discs automatically placed in apertures in anchor
US4583866A (en) * 1983-09-29 1986-04-22 Kabushiki Kaisha Suwa Seikosha Watch dial and method for preparation
JPH11118959A (ja) * 1997-10-08 1999-04-30 Seiko Epson Corp 接着方法及びこれに利用されるディスペンサ
EP1172714A1 (de) 1999-12-24 2002-01-16 Seiko Instruments Inc. Verfahren zur gangregelung von mechanischen uhren
EP2469353A1 (de) * 2010-12-22 2012-06-27 ETA SA Manufacture Horlogère Suisse Zusammenbau eines Teils, das keinen Plastikbereich enthält
CH707995A2 (fr) * 2013-04-22 2014-10-31 Min Kyung Hyun Lunette de montre et procédé pour fabriquer cette dernière.
CH707993A2 (fr) * 2013-04-22 2014-10-31 Laurent Ferrier Sa Ancre à géométrie améliorée.
WO2016203063A1 (fr) 2015-12-15 2016-12-22 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Piece d'horlogerie composite et son procede de fabrication
EP3118692A1 (de) * 2015-07-16 2017-01-18 Nivarox-FAR S.A. Befestigung der spiralfeder eines uhrwerks durch verklebung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE452726T1 (de) * 2001-08-07 2010-01-15 Fraunhofer Ges Forschung Verfahren zum laserstrahlschweissen
EP1450332A4 (de) * 2002-06-13 2005-09-07 Seiko Epson Corp Blattartige dichtung und bondverfahren dafür, ziffernblatt, verfahren zur herstellung des ziffernblatts und uhr
JP2010261906A (ja) * 2009-05-11 2010-11-18 Seiko Instruments Inc 時計用歯車及び時計
EP2865737A1 (de) * 2013-10-28 2015-04-29 The Swatch Group Research and Development Ltd. Edelprodukt aus Epilam
CH713911B1 (fr) * 2017-06-22 2022-05-31 Rolex Sa Procédé de fabrication d'un composant horloger en élastomère comprenant une âme métallique.
EP3495894B1 (de) * 2017-12-05 2023-01-04 Rolex Sa Verfahren zur herstellung einer uhrkomponente
EP3674816B1 (de) * 2018-12-24 2022-04-27 The Swatch Group Research and Development Ltd Ausstattung einer uhr oder eines schmuckstücks aus einem schweren verbundmaterial

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1551159A (de) * 1967-11-14 1968-12-27
FR2263549A1 (en) * 1974-03-05 1975-10-03 Ebosa Sa Watch balance mechanism assembly system - uses pallet discs automatically placed in apertures in anchor
US4583866A (en) * 1983-09-29 1986-04-22 Kabushiki Kaisha Suwa Seikosha Watch dial and method for preparation
JPH11118959A (ja) * 1997-10-08 1999-04-30 Seiko Epson Corp 接着方法及びこれに利用されるディスペンサ
EP1172714A1 (de) 1999-12-24 2002-01-16 Seiko Instruments Inc. Verfahren zur gangregelung von mechanischen uhren
EP2469353A1 (de) * 2010-12-22 2012-06-27 ETA SA Manufacture Horlogère Suisse Zusammenbau eines Teils, das keinen Plastikbereich enthält
CH707995A2 (fr) * 2013-04-22 2014-10-31 Min Kyung Hyun Lunette de montre et procédé pour fabriquer cette dernière.
CH707993A2 (fr) * 2013-04-22 2014-10-31 Laurent Ferrier Sa Ancre à géométrie améliorée.
EP3118692A1 (de) * 2015-07-16 2017-01-18 Nivarox-FAR S.A. Befestigung der spiralfeder eines uhrwerks durch verklebung
WO2016203063A1 (fr) 2015-12-15 2016-12-22 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Piece d'horlogerie composite et son procede de fabrication

Also Published As

Publication number Publication date
JP2022542842A (ja) 2022-10-07
EP4022398A1 (de) 2022-07-06
KR20220031922A (ko) 2022-03-14
CN114341749B (zh) 2023-06-16
EP4022398B1 (de) 2023-07-26
CN114341749A (zh) 2022-04-12
WO2021037408A1 (fr) 2021-03-04
JP7302091B2 (ja) 2023-07-03
US20220276610A1 (en) 2022-09-01

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