EP4022398A1 - Method for bonding clock components - Google Patents

Method for bonding clock components

Info

Publication number
EP4022398A1
EP4022398A1 EP20735065.3A EP20735065A EP4022398A1 EP 4022398 A1 EP4022398 A1 EP 4022398A1 EP 20735065 A EP20735065 A EP 20735065A EP 4022398 A1 EP4022398 A1 EP 4022398A1
Authority
EP
European Patent Office
Prior art keywords
component
watch
primer composition
components
glue
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.)
Granted
Application number
EP20735065.3A
Other languages
German (de)
French (fr)
Other versions
EP4022398B1 (en
Inventor
Sylvain Huot-Marchand
M. 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
Publication of EP4022398A1 publication Critical patent/EP4022398A1/en
Application granted granted Critical
Publication of EP4022398B1 publication Critical patent/EP4022398B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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.
  • pallets are fixed to the anchor by gluing, typically by means of a dissolved shellac in an alcohol solvent.
  • Shellac is a natural hot-melt resin, that is, it is honeyed at temperatures above its melting point (Tt) and solid below its melting point (Tt) or its temperature. glass transition (T g ).
  • Tt melting point
  • T g glass transition
  • 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 material is purified and processed, but the purity and composition obtained are never guaranteed. It is therefore very difficult if not impossible to guarantee the constant performance of this natural product over time.
  • industrial processes are insufficiently robust to guarantee cleanliness of the anchor body and therefore always the same surface tension.
  • 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 hold it in specific areas. With epilamage, the surface tension is supposed to be controlled. However, we note 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, causing fluctuations in surface properties to the detriment of sticking of the pallets.
  • Another example of watch components assembled by gluing is found at the level of the balance and relates more specifically to the hairspring glued to its pin.
  • 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 the application of an adhesive on a first and / or a second watch component to be bonded to one another and the deposit of a tie coat (primer, adhesion primer) on at least one of the first and second components to be bonded by spraying a primer composition into / onto a binding zone located 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 even the deposition 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 bond coat is deposited before the application of the adhesive if the adhesive is applied to the same component (s) as the bond coat and, if necessary, before putting in contact the first and second watch components.
  • the invention notably proposes 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.
  • 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 relative to the first and / or second components on which the bonding layer must be trained.
  • 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 carried out by exposure to radiation.
  • the primer composition can also comprise a thermosetting material in which case the solidification of the layer of primer composition is carried out 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 tack coat 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 glue could be applied using the same technology as the tack coat. More precisely, the glue could be applied by a glue projection nozzle, the projection nozzle being:
  • first and / or second component on which glue is to be applied being movably mounted on a multi-axis robot arm to change its orientation relative to the glue projection nozzle.
  • the first watch component can be an escapement anchor and the second watch component an anchor paddle,
  • the first watch component can be a balance pin and the second watch component a balance spring
  • the first horological component can be a mobile plate and the second horological component an axis, eg a metal axis,
  • the first horological component can be an index pad and the second horological component a dial.
  • the list of components which 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), eg polyurethane, acrylates or epoxies. It will be noted that for the noble metals, certain products containing thiols can be used. It is understood that those 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, with regard to 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 epilwayss and / or to facilitate the application of the adhesive in the compliance with drop quality criteria (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.
  • first and second components capable of being connected to one another using such a bonding process.
  • the one-piece assembly includes a connecting part connecting the connecting areas of the first and second components;
  • the connecting part is formed of a layer of glue and a tie layer, in particular a layer of primer composition
  • the first watch component is an escapement anchor and the second watch component is an anchor paddle;
  • the first watch component is a balance pin and the second watch component is a spiral spring;
  • the first horological component is a mobile board and the second horological component is an axis, and
  • the first horological component is an index plot and the second horological component is a dial.
  • Another aspect of the invention relates to a timepiece comprising such a one-piece assembly of watch components.
  • Fig. 1 the diagram of a first embodiment of a bonding process according to the invention
  • Fig. 2 the diagram of a second embodiment of a bonding process according to the invention. Detailed description of embodiments of the invention
  • Figures 1 and 2 illustrate, schematically, 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 needed. Thanks to the invention, it is possible to have recourse to resistant epillogies, because the bonding zones on the pallets 12, 14 can be prepared before the application of the shellac using a primer layer. , which adjusts the surface tension so as to satisfactorily allow wetting of the surface by the shellac.
  • the tack 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 at reference numeral 32.
  • the projection of the primer composition is effected by a projection nozzle 30 movably mounted, eg on a multi-axis robot arm to change its orientation relative 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 is solidified.
  • this solidification of the primer composition is carried out after applying the glue to the first and / or the second watch component to be glued to one another.
  • the deposition of the tack coat can be done before applying the glue if the glue is applied to the same component as the tack coat.
  • Such a solidification of the primary composition contributes in particular to ensuring strong adhesion of the watch components glued together.
  • the solidification is carried out according to the properties of the primer composition, for example by UV radiation or by electron beam in the case of material which can be hardened to radiation, by heat treatment in the case of material thermosetting, by laser sintering ("laser sintering"), or simply by evaporation of the solvent. Note that such evaporation can be natural or forced.
  • the hardening method could combine several of these possibilities, eg to speed up hardening.
  • tie coat on the anchor 16.
  • the composition of the tie layer can be the same as that which is applied to the pallets 12, 14, to provided that the adhesion on the two types of components is strong enough.
  • Figure 1 schematically shows a mode in which the primer composition consists of a single fluid
  • 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 one-piece assembly of watch components comprising first and second components capable of being connected to one another using such a method.
  • a one-piece assembly comprises a connecting part connecting the connecting zones of the first and second components.
  • This bonding part is formed of a layer of glue and a bonding layer, in particular a layer of primer composition.
  • the first watch component is an escapement anchor and the second watch component is an anchor paddle;
  • the first watch component is a balance pin and the second watch component is a spiral spring
  • the first horological component is a mobile board and the second horological component is an axis;
  • the first horological component is an index plot and the second horological component is a dial.
  • Another aspect of the invention relates to a timepiece comprising such a one-piece assembly of watch components. While particular embodiments have just been described in detail, those skilled in the art will appreciate that various modifications and alternatives to these can be developed in light of the overall teaching provided by the present disclosure of invention. Therefore, the specific arrangements and / or methods described herein are intended to be given for illustration only, without the intention of limiting the scope of the invention, which is determined by the scope of the appended claims.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)

Abstract

The invention relates to a method for bonding clock components, comprising the application of an adhesive to a first and/or second clock component to be bonded to each other, and depositing a priming coat onto at least one of the first and second components to be bonded by spraying a primer composition into a localised bonding area, followed by the solidification of the primer composition. The priming coat is deposited prior to the application of the adhesive if the adhesive is applied to the same component(s) as the priming coat.

Description

PROCÉDÉ DE COLLAGE DE COMPOSANTS HORLOGERS PROCESS FOR BONDING WATCHMAKING COMPONENTS
Domaine Technique Technical area
La présente invention a trait au domaine de l'horlogerie et concerne plus particulièrement un procédé de collage de composants horlogers visant à former un ensemble monobloc de composants horlogers. 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.
Arrière-plan technologique Technological background
[0001] Dans le domaine de l'horlogerie, certains composants horlogers peuvent être assemblés entre eux au moyen d'une colle (adhésif liquide au moment de son application). In the field of watchmaking, certain watch components can be assembled together by means of an adhesive (liquid adhesive at the time of its application).
[0002] A titre d'exemple, dans un échappement à ancre d’une montre mécanique, des palettes (ou « levées, généralement en rubis) sont fixées sur l'ancre par collage, typiquement au moyen d'une gomme-laque dissoute dans un solvant alcool. La gomme-laque est une résine naturelle thermofusible, c'est-à-dire qu'elle est mielleuse à des températures supérieures à sa température de fusion (Tt) et solide en dessous de sa température de fusion (Tt) ou de sa température de transition vitreuse (Tg). Selon le processus de fabrication de l’ancre, il est possible que le résultat du collage ne soit pas en conformité avec les exigences, soit parce que la tenue mécanique de la palette est insuffisante, soit parce que l’esthétique de la goutte est en-dehors des spécifications. Dans les deux cas, la cause de la non-conformité est souvent un problème de tension de surface. [0002] For example, in an anchor escapement of a mechanical watch, pallets (or "levers, generally in ruby) are fixed to the anchor by gluing, typically by means of a dissolved shellac in an alcohol solvent. Shellac is a natural hot-melt resin, that is, it is honeyed at temperatures above its melting point (Tt) and solid below its melting point (Tt) or its temperature. glass transition (T g ). Depending on the manufacturing process of the anchor, it is possible that 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.
[0003] La gomme-laque est sécrétée par la femelle de la cochenille dans les forêts du sud-est asiatique. La composition de la laque dépend fortement du régime alimentaire des cochenilles et de la saison de récolte. La substance récoltée est purifiée et traitée mais la pureté et la composition obtenues ne sont jamais garanties. Il est donc très difficile si ce n’est impossible de de garantir dans la durée les performances constantes de ce produit naturel. [0004] D’autre part, les processus industriels sont insuffisamment robustes pour garantir une propreté du corps de l’ancre et donc une tension de surface toujours identique. Il peut y avoir des pollutions diverses physiques ou chimiques, comme des particules, des adsorptions d’eau ou d’autres substances, qui toutes modifient la réaction de la surface lors du dépôt de la gomme-laque. [0003] 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 material is purified and processed, but the purity and composition obtained are never guaranteed. It is therefore very difficult if not impossible to guarantee the constant performance of this natural product over time. [0004] On the other hand, industrial processes are insufficiently robust to guarantee cleanliness of the anchor body and therefore always the same surface tension. There can be various physical or chemical pollutions, such as particles, adsorption of water or other substances, all of which modify the reaction of the surface during the deposition of shellac.
[0005] Les palettes sont complètement ou partiellement épilamées selon les besoins. Un épilame est un produit qui modifie dans un sens ou dans un autre la tension superficielle du support. Il se présente généralement sous la forme d'une couche moléculaire invisible hydrophobe et oléophobe, et est déposée afin d'éviter l'étalement d’un lubrifiant ou de ses composants. L’épilame accroche le lubrifiant pour qu'il reste en place soit il le repousse pour le maintenir dans des zones bien déterminées. Grâce à l’épilamage, la tension de surface est censée être maîtrisée. On constate toutefois que durant le processus d’épilamage, il est régulièrement fait recours à des opérations de nettoyage de composants après des étapes de fabrication potentiellement salissantes. De tels nettoyages peuvent dégrader au moins partiellement l’effet épilame, ce qui occasionne des fluctuations dans les propriétés de surface au détriment du collage des palettes. À l’inverse, il est possible de recourir à des épilâmes résistants. Ceux-ci conduisent cependant à des tensions de surface incompatibles avec le mouillage de la surface par la gomme-laque. Dans ce cas, il est impossible de coller la palette puisque la gomme-laque aura tendance à fuir la surface épilamée. [0005] 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 hold it in specific areas. With epilamage, the surface tension is supposed to be controlled. However, we note 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, causing fluctuations in surface properties to the detriment of sticking of the pallets. Conversely, it is possible to use resistant hair removers. However, these lead to surface tensions which are incompatible with the wetting of the surface by the shellac. In this case, it is impossible to glue the palette since the shellac will tend to leak from the epilamed surface.
[0006] Un autre exemple de composants horlogers assemblés par collage se trouve au niveau du balancier et concerne plus précisément le spiral collé sur son piton. Another example of watch components assembled by gluing is found at the level of the balance and relates more specifically to the hairspring glued to its pin.
[0007] Un objectif de la présente invention consiste à proposer une préparation d’un composant horloger au collage. Description générale de l’invention An objective of the present invention is to provide a preparation of a watch component for bonding. General description of the invention
[0008] Un aspect de l’invention concerne un procédé de collage de composants horlogers, comprenant l’application d’une colle sur un premier et/ou un second composant horloger à coller l’un sur l’autre et le dépôt d’une couche d’accrochage (apprêt, primaire d’adhésion) sur au moins un des premier et second composants à coller par projection d’une composition de primaire dans/sur une zone de liaison localisée sur une portion d’une face de chacun de ces premier et deuxième composants. La colle est ainsi appliquée de manière à former une couche de colle. Cette application de la colle, ou encore le dépôt de cette couche de colle, est ensuite suivie de la solidification de la composition de primaire. On notera que la zone de liaison peut être appelée zone de collage. Le dépôt de la couche d’accrochage est effectué avant l’application de la colle si la colle est appliquée sur le(s) même(s) composant(s) que la couche d’accrochage et, au besoin, avant de mettre en contact les premier et second composants horlogers. One aspect of the invention relates to a method of bonding watch components, comprising the application of an adhesive on a first and / or a second watch component to be bonded to one another and the deposit of a tie coat (primer, adhesion primer) on at least one of the first and second components to be bonded by spraying a primer composition into / onto a binding zone located 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 even the deposition of this layer of glue, is then followed by the solidification of the primer composition. It will be noted that the connection zone can be called the bonding zone. The bond coat is deposited before the application of the adhesive if the adhesive is applied to the same component (s) as the bond coat and, if necessary, before putting in contact the first and second watch components.
[0009] L’invention propose notamment de déposer la couche d’accrochage par projection. Celle-ci peut être effectuée, p.ex., au moyen de la technologie Aérosol Jet (marque de fabrique de la société Optomec) ou par toute autre technologie d’impression numérique. Ces technologies permettent aujourd’hui le dépôt de matériaux fluides de manière très précise tant en volume qu’en localisation. Elles peuvent être adaptées aux composants horlogers, comme l’indiquent les demandes de brevet WO 2016/203063 et EP1172714. La présente invention exploite notamment le potentiel de précision de cette technologie de dépôt pour préparer des composant horlogers au collage. Le fait de recourir à une couche d’accrochage déposée par impression numérique permet de doter les composants d’une zone de collage précisément délimitée et présentant une tension de surface adaptée à la colle. Ceci rend possible l’utilisation d’épilames plus résistants qui ne sont pas ou seulement peu mouillables par la colle que l’on souhaite employer. [0010] De préférence, la projection de la composition de primaire fluide est effectuée par une buse de projection montée mobile sur un bras de robot multiaxes pour changer son orientation par rapport au premier et/ou second composants sur lequel la couche d’accrochage doit être formée. De manière alternative, la projection de la composition de primaire peut être effectuée essentiellement verticalement du haut vers le bas par une buse de projection, le premier et/ou second composants sur lequel la couche d’accrochage doit être formée étant dans ce cas monté mobile sur un bras de robot multiaxes pour changer son orientation par rapport à la buse de projection. Cette deuxième possibilité a l’avantage que le jet peut rester vertical, ce qui pourra faciliter une délimitation précise de la couche d’accrochage. [0009] The invention notably proposes 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. Preferably, 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 relative to the first and / or second components on which the bonding layer must be trained. Alternatively, 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.
[0011 ] La composition de primaire peut comprendre un matériau durcissable par rayonnement (ultraviolet et/ou faisceau d’électrons) et dans ce cas la solidification de la couche de composition de primaire est effectuée par exposition au rayonnement. 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 carried out by exposure to radiation.
[0012] La composition de primaire peut également comprendre un matériau thermodurcissable auquel cas la solidification de la couche de composition de primaire est effectuée par traitement thermique. The primer composition can also comprise a thermosetting material in which case the solidification of the layer of primer composition is carried out by heat treatment.
[0013] La composition de primaire peut se présenter ou la forme d’une encre comprenant la composition de primaire dissoute ou suspendue dans un solvant. La composition de primaire pourrait également se présenter sous forme de résine polymérique (avec ou sans charges minérales) comprenant des diluants réactifs au lieu de solvants volatiles. 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.
[0014] Selon un mode de réalisation de l’invention, au moins un des premier et second composants horlogers à coller l’un sur l’autre est épilamé. La couche d’accrochage peut être formée sur le composant horloger épilamé. [0014] According to one embodiment of the invention, at least one of the first and second watch components to be bonded to one another is epilamed. The tack coat can be formed on the epilamed watch component.
[0015] La colle pourrait comprendre de la gomme-laque. De manière alternative, la colle pourrait comprendre une colle époxy. [0016] Selon un mode de réalisation spécifique, il s’agit de coller l’un sur l’autre des composants horlogers dont au moins l’un est épilamé au moyen d’une colle comprenant de la gomme-laque. Dans ce cas, la couche d’accrochage possède de préférence une affinité chimique et/ou physique aussi bien pour la gomme-laque que pour l’épilame. On note que les deux composants horlogers pourraient être épilamés. The glue could include shellac. Alternatively, the glue could include epoxy glue. [0016] According to a specific embodiment, 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. In this case, 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.
[0017] On note que la colle pourrait être appliquée à l’aide de la même technologie que la couche d’accrochage. Plus précisément, la colle pourrait être appliquée par une buse de projection de colle, la buse de projection étant : [0017] Note that the glue could be applied using the same technology as the tack coat. More precisely, the glue could be applied by a glue projection nozzle, the projection nozzle being:
- montée mobile sur un bras de robot multiaxes pour changer son orientation par rapport au premier et/ou second composants sur lequel la colle doit être appliquée ; ou - movably mounted on a multi-axis robot arm to change its orientation relative to the first and / or second component on which the glue is to be applied; or
- essentiellement verticalement du haut vers le bas, et le premier et/ou second composants sur lequel colle doit être appliquée étant monté mobile sur un bras de robot multiaxes pour changer son orientation par rapport à la buse de projection de colle. - Essentially vertically from top to bottom, and the first and / or second component on which glue is to be applied being movably mounted on a multi-axis robot arm to change its orientation relative to the glue projection nozzle.
[0018] On remarquera que divers composants horlogers peuvent être collés ensemble grâce à la présente invention. Par exemple : - le premier composant horloger peut être une ancre d’échappement et le second composant horloger une palette d’ancre, It will be noted that various watch components can be glued together by virtue of the present invention. For example: - the first watch component can be an escapement anchor and the second watch component an anchor paddle,
- le premier composant horloger peut être un piton de balancier et le second composant horloger un ressort spiral de balancier, - the first watch component can be a balance pin and the second watch component a balance spring,
- le premier composant horloger peut être une planche de mobile et le second composant horloger un axe, p.ex. un axe en métal, - the first horological component can be a mobile plate and the second horological component an axis, eg a metal axis,
- le premier composant horloger peut être un plot d’index et le second composant horloger un cadran. [0019] La liste des composants qui pourraient être collés n’est pas exhaustive. L’invention peut servir à améliorer le collage de composants horlogers qui sont déjà actuellement fixés l’un sur l’autre par collage (comme dans le cas de l’ancre et de ses palettes). L’invention pourrait cependant être utile pour permettre le collage de composants horlogers qui sont actuellement fixés par d’autres moyens, (p.ex. par serrage ou rivetage). On pense notamment à une planche mobile de conception fragile (du fait de sa faible épaisseur et/ou du fait d’être réalisé en un matériau fragile comme, p.ex., le silicium) sur un axe en métal (p.ex. en acier). Le collage de ces composants horlogers permettrait d’éviter ou au moins de réduire la déformation ou la rupture de la planche due au rivetage ou à la chasse tout en garantissant la cohésion entre la planche et son axe lors des sollicitations qui leur sont appliquées. the first horological component can be an index pad and the second horological component a dial. The list of components which 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). We think in particular of a movable board of fragile design (due to its small thickness and / or the fact of being made of a fragile material such as, for example, silicon) on a metal axis (for example. in steel). 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.
[0020] La couche d’accrochage pourrait être à base de polymère(s), p.ex. de polyuréthane, des acrylates ou encore des époxydes. On notera que pour les métaux nobles, certains produits contenant des thiols peuvent être utilisés. Il est entendu que l’homme du métier choisira la composition de primaire en fonction de la nature des composants horlogers, respectivement de la colle. On note qu’en cas de composition de primaire sur base de polymères, les polymères qui subissent une réticulation (irréversible) sont préférés. Par contre, en ce qui concerne la colle, pour le collage de certains composants, une colle thermodurcissable est préférable alors que dans d’autres cas, on recourt plutôt à de la colle thermoplastique. The bonding layer could be based on polymer (s), eg polyurethane, acrylates or epoxies. It will be noted that for the noble metals, certain products containing thiols can be used. It is understood that those 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, with regard to the glue, for the bonding of certain components, a thermosetting glue is preferable while in other cases, one resorts rather to thermoplastic glue.
[0021 ] Les divers aspects de l’invention permettent d’améliorer le collage de composants d’horlogerie, de réduire l’impact de salissures, d’utiliser des épilâmes plus résistants et/ou de faciliter l’application de la colle dans le respect des critères de qualité de la goutte (position, quantité). 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 epilâmes and / or to facilitate the application of the adhesive in the compliance with drop quality criteria (position, quantity).
[0022] Un autre aspect de l'invention concerne sur un ensemble monobloc de composants horlogers comprenant des premier et deuxième composants susceptibles d’être reliés l’un à l’autre à partir d’un tel procédé de collage. Dans d’autres modes de réalisation : 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. In other embodiments:
- L’ensemble monobloc comprend une partie de liaison reliant des zones de liaison des premier et deuxième composants ; - The one-piece assembly includes a connecting part connecting the connecting areas of the first and second components;
- la partie de liaison est formée d’une couche de colle et d’une couche d’accrochage notamment une couche de composition de primaire ;- the connecting part is formed of a layer of glue and a tie layer, in particular a layer of primer composition;
- le premier composant horloger est une ancre d’échappement et le second composant horloger est une palette d’ancre ; - the first watch component is an escapement anchor and the second watch component is an anchor paddle;
- le premier composant horloger est un piton de balancier et le second composant horloger est un ressort spiral ; - le premier composant horloger est planche de mobile et le second composant horloger est un axe, et - the first watch component is a balance pin and the second watch component is a spiral spring; - the first horological component is a mobile board and the second horological component is an axis, and
- le premier composant horloger est un plot d’index et le second composant horloger est un cadran. - the first horological component is an index plot and the second horological component is a dial.
[0023] Un autre aspect de l'invention concerne une pièce d’horlogerie comprenant un tel ensemble monobloc de composants horlogers. Another aspect of the invention relates to a timepiece comprising such a one-piece assembly of watch components.
Brève description des dessins Brief description of the drawings
[0024] D'autres particularités et caractéristiques de l'invention ressortiront de la description détaillée de certains modes de réalisation avantageux présentés ci-dessous, à titre d'illustration, avec référence aux dessins annexés qui montrent : Other features and characteristics of the invention will emerge from the detailed description of certain advantageous embodiments presented below, by way of illustration, with reference to the accompanying drawings which show:
Fig. 1 : le schéma d’un premier mode de réalisation d’un procédé de collage selon l’invention ; Fig. 1: the diagram of a first embodiment of a bonding process according to the invention;
Fig. 2: le schéma d’un deuxième mode de réalisation d’un procédé de collage selon l’invention. Description détaillée de modes de réalisation de l’invention Fig. 2: the diagram of a second embodiment of a bonding process according to the invention. Detailed description of embodiments of the invention
[0025] Les figures 1 et 2 illustrent, de manière schématique, des modes de réalisation d’un procédé de collage selon l’invention. Comme discuté plus haut, le procédé selon l’invention peut être employé pour coller les palettes 12, 14 sur l’ancre 16 de l’échappement 10 d’une montre mécanique. Les figures montrent un échappement 10 à ancre suisse. Il comprend une roue d’échappement 18, typiquement en acier trempé et poli. L’ancre 16 relie la roue d’échappement au balancier (dont les figures montrent le petit plateau 20, le grand plateau 22 et l’axe 24) et peut basculer entre deux positions au rythme imposé par l’ensemble balancier et spiral. À chaque alternance, la roue d’échappement 18 donne une impulsion à l’ancre 16, qui la transfère au balancier de sorte à entretenir les oscillations de ce dernier. Les palettes 12, 14 sont typiquement réalisées en rubis, à cause de sa dureté et de son faible coefficient de frottement, collés sur l’ancre 16 au moyen d’une colle à base de gomme-laque. Figures 1 and 2 illustrate, schematically, embodiments of a bonding method according to the invention. As discussed more above, 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.
[0026] Les palettes 12, 14 sont complètement ou partiellement épilamées selon les besoins. Grâce à l’invention, il est possible de recourir à des épilâmes résistants, car les zones de collage sur les palettes 12, 14 peuvent être préparées avant l’application de la gomme-laque à l’aide d’une couche d’accrochage, qui ajuste la tension de surface de sorte à permettre de manière satisfaisante le mouillage de la surface par la gomme-laque. On forme la couche d’accrochage en appliquant une composition de primaire par un procédé d’impression numérique directe sur le composant. On peut notamment déposer la couche d’accrochage par projection de la composition de primaire sous forme d’encre 26. La quantité d’encre et la position de chaque gouttelette sont précisément contrôlées par une unité de commande 28 (p.ex. un microprocesseur, un ordinateur, etc.) L’unité de commande 28 règle notamment la position et l’orientation du composant par rapport à la buse de projection de l’encre. La possibilité d’orienter et de positionner la buse de projection 30 par rapport au support d’impression est schématiquement indiquée au numéro de référence 32. The pallets 12, 14 are completely or partially epilamated as needed. Thanks to the invention, it is possible to have recourse to resistant epilâmes, because the bonding zones on the pallets 12, 14 can be prepared before the application of the shellac using a primer layer. , which adjusts the surface tension so as to satisfactorily allow wetting of the surface by the shellac. The tack 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. , a computer, etc.) 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 at reference numeral 32.
[0027] Le composant sur lequel on imprime pourrait rester immobile pendant l’impression. Dans ce cas, la projection de la composition de primaire est effectuée par une buse de projection 30 montée mobile, p.ex. sur un bras de robot multiaxes pour changer son orientation par rapport au composant, c.-à- d., dans le cas illustré, la palette 12 ou 14 ou l’ancre 16. De préférence, la buse de projection 30 reste toutefois orientée verticalement du haut vers le bas pendant l’impression, et le composant est dans ce cas monté mobile, p.ex. sur un bras de robot multiaxes, pour changer son orientation par rapport à la buse de projection 30. The component on which we print could remain stationary during printing. In this case, the projection of the primer composition is effected by a projection nozzle 30 movably mounted, eg on a multi-axis robot arm to change its orientation relative to the component, i.e., in the illustrated case, the pallet 12 or 14 or the anchor 16. Preferably, however, 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.
[0028] Dans une première alternative, après le dépôt sur la surface du composant la composition de primaire est solidifiée. Dans une deuxième alternative, cette solidification de la composition de primaire est réalisée après l’application de la colle sur le premier et/ou le second composant horloger à coller l’un sur l’autre. On notera que dans ces deux alternatives, le dépôt de la couche d’accrochage peut être effectué avant l’application de la colle si la colle est appliquée sur le même composant que la couche d’accrochage. Une telle solidification de la composition primaire participe à assurer notamment une forte adhésion des composants horlogers collés entre eux. In a first alternative, after the deposition on the surface of the component, the primer composition is solidified. In a second alternative, this solidification of the primer composition is carried out after applying the glue to the first and / or the second watch component to be glued to one another. Note that in these two alternatives, the deposition of the tack coat can be done before applying the glue if the glue is applied to the same component as the tack coat. Such a solidification of the primary composition contributes in particular to ensuring strong adhesion of the watch components glued together.
[0029] Dans ces deux alternatives, la solidification est faite en fonction des propriétés de la composition de primaire, p.ex. par rayonnement UV ou par faisceau d’électrons en cas de matériau durcissable aux rayonnements, par traitement thermique en cas de matériau thermodurcissable, par frittage au laser (« laser sintering »), ou simplement par évaporation du solvant. On notera qu’une telle évaporation peut être naturelle ou forcée. La méthode de durcissement pourrait combiner plusieurs de ces possibilités, p.ex. pour accélérer le durcissement. In these two alternatives, the solidification is carried out according to the properties of the primer composition, for example by UV radiation or by electron beam in the case of material which can be hardened to radiation, by heat treatment in the case of material thermosetting, by laser sintering ("laser sintering"), or simply by evaporation of the solvent. Note that such evaporation can be natural or forced. The hardening method could combine several of these possibilities, eg to speed up hardening.
[0030] Outre les palettes 12, 14, on peut également appliquer une couche d’accrochage sur l’ancre 16. La composition de la couche d’accrochage peut être la même que celle qui est appliquée sur les palettes 12, 14, à condition que l’adhésion sur les deux types de composants soit assez forte. Alternativement, on utilisera des couches d’accrochage différentes sur l’ancre 16 et les palettes 12, 14. Dans ce contexte, ces palettes 12, 14 et l’ancre 16 forment alors un ensemble monobloc de composants horlogers. In addition to the pallets 12, 14, one can also apply a tie coat on the anchor 16. The composition of the tie layer can be the same as that which is applied to the pallets 12, 14, to provided that the adhesion on the two types of components is strong enough. Alternatively, we will use different bonding layers 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.
[0031] Alors que la figure 1 montre schématiquement un mode dans lequel la composition de primaire est constituée d’un fluide unique, la figure 2 illustre le cas où la composition de primaire est de type bi-composant mélangé in situ. Dans ce cas, deux fluides réactifs 26a et 26b sont réunis sur le composant horloger dans la zone de collage. While Figure 1 schematically shows a mode in which the primer composition consists of a single fluid, Figure 2 illustrates the case where the primer composition is of the two-component type mixed in situ. In this case, two reactive fluids 26a and 26b are brought together on the watch component in the bonding zone.
[0032] Un autre aspect de l'invention concerne un ensemble monobloc de composants horlogers comprenant des premier et deuxième composants susceptibles d’être reliés l’un à l’autre à partir d’un tel procédé. Un tel ensemble monobloc comprend une partie de liaison reliant des zones de liaison des premier et deuxième composants. Cette partie de liaison est formée d’une couche de colle et d’une couche d’accrochage notamment une couche de composition de primaire. Dans cet ensemble monobloc : - le premier composant horloger est une ancre d’échappement et le second composant horloger est une palette d’ancre ; 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 method. Such a one-piece assembly comprises a connecting part connecting the connecting zones of the first and second components. This bonding part is formed of a layer of glue and a bonding layer, in particular a layer of primer composition. In this one-piece assembly: - the first watch component is an escapement anchor and the second watch component is an anchor paddle;
- le premier composant horloger est un piton de balancier et le second composant horloger est un ressort spiral ; - the first watch component is a balance pin and the second watch component is a spiral spring;
- le premier composant horloger est planche de mobile et le second composant horloger est un axe ; the first horological component is a mobile board and the second horological component is an axis;
- le premier composant horloger est un plot d’index et le second composant horloger est un cadran. - the first horological component is an index plot and the second horological component is a dial.
[0033] Un autre aspect de l'invention concerne une pièce d’horlogerie comprenant un tel ensemble monobloc de composants horlogers. [0034] Alors que des modes de réalisation particuliers viennent d’être décrits en détail, l’homme du métier appréciera que diverses modifications et alternatives à ceux-là puissent être développées à la lumière de l’enseignement global apporté par la présente divulgation de l’invention. Par conséquent, les agencements et/ou procédés spécifiques décrits ci-dedans sont censés être donnés uniquement à titre d’illustration, sans intention de limiter la portée de l’invention, qui est déterminée par l’étendue des revendications rattachées. Another aspect of the invention relates to a timepiece comprising such a one-piece assembly of watch components. While particular embodiments have just been described in detail, those skilled in the art will appreciate that various modifications and alternatives to these can be developed in light of the overall teaching provided by the present disclosure of invention. Therefore, the specific arrangements and / or methods described herein are intended to be given for illustration only, without the intention of limiting the scope of the invention, which is determined by the scope of the appended claims.

Claims

Revendications Claims
1. Procédé de collage de composants horlogers dont au moins un est épilamé, comprenant : 1. A method of bonding watch components, at least one of which is epilamed, comprising:
- une application d’une colle sur un premier et/ou un second composant horloger à coller l’un sur l’autre, - an application of an adhesive on a first and / or a second watch component to be bonded to one another,
- un dépôt d’une couche d’accrochage sur au moins un des premier et second composants à coller par projection d’une composition de primaire dans une zone de liaison localisée du premier ou du second composant, et - solidification de la composition de primaire. - deposition of a tie layer on at least one of the first and second components to be bonded by spraying a primer composition into a localized binding zone of the first or second component, and - solidification of the primer composition .
2. Procédé selon la revendication précédente, caractérisé en ce que ledit dépôt de la couche d’accrochage est suivie par la solidification de la composition de primaire. 2. Method according to the preceding claim, characterized in that said deposition of the bonding layer is followed by the solidification of the primer composition.
3. Procédé selon la revendication 1 , caractérisé en ce que ladite application de la colle est suivie par la solidification de la composition de primaire. 3. Method according to claim 1, characterized in that said application of the adhesive is followed by the solidification of the primer composition.
4. Procédé selon l’une quelconque des revendications précédentes, caractérisé en ce que ledit dépôt de la couche d’accrochage est effectué avant l’application de la colle si la colle est appliquée sur le même composant que la couche d’accrochage 4. Method according to any one of the preceding claims, characterized in that said deposition of the tack coat is carried out before the application of the glue if the glue is applied to the same component as the tack coat
5. Procédé selon l’une quelconque des revendications précédentes, caractérisé en ce que la projection de la composition de primaire est effectuée par une buse de projection montée mobile sur un bras de robot multiaxes pour changer son orientation par rapport au premier et/ou second composants sur lequel la couche d’accrochage doit être formée. 5. Method according to any one of the preceding claims, characterized in that the projection of the primer composition is carried out by a projection nozzle movably mounted on a multi-axis robot arm to change its orientation relative to the first and / or second components on which the bonding layer is to be formed.
6. Procédé selon la revendication 1 , caractérisé en ce que la projection de la composition de primaire est effectuée essentiellement verticalement du haut vers le bas par une buse de projection, et dans lequel le premier et/ou second composants sur lequel la couche d’accrochage doit être formée est monté mobile sur un bras de robot multiaxes pour changer son orientation par rapport à la buse de projection. 6. Method according to claim 1, characterized in that the projection of the primer composition is carried out essentially vertically. from top to bottom by a spray nozzle, and in which the first and / or second component on which the bonding layer is to be formed is movably mounted on a multi-axis robot arm to change its orientation relative to the spray nozzle. projection.
7. Procédé l’une quelconque des revendications précédentes, caractérisé en ce que la composition de primaire comprend un matériau durcissable par rayonnement et dans lequel la solidification de la couche de composition de primaire est effectuée par exposition au rayonnement. The method of any one of the preceding claims, characterized in that the primer composition comprises a radiation curable material and wherein the solidification of the primer composition layer is effected by exposure to radiation.
8. Procédé selon l’une quelconque des revendications précédentes, caractérisé en ce que la composition de primaire comprend un matériau thermodurcissable et dans lequel la solidification de la couche de composition de primaire est effectuée par traitement thermique. 8. Method according to any one of the preceding claims, characterized in that the primer composition comprises a thermosetting material and in which the solidification of the layer of primer composition is effected by heat treatment.
9. Procédé selon l’une quelconque des revendications précédentes, caractérisé en ce qu’au moins un des premier et second composants horlogers à coller l’un sur l’autre est épilamé. 9. Method according to any one of the preceding claims, characterized in that at least one of the first and second watch components to be bonded to one another is epilamed.
10. Procédé selon l’une quelconque des revendications précédentes, caractérisé en ce que la couche d’accrochage est déposée sur le composant horloger épilamé. 10. Method according to any one of the preceding claims, characterized in that the bonding layer is deposited on the epilamed watch component.
11. Procédé l’une quelconque des revendications précédentes, caractérisé en ce que la colle comprend de la gomme-laque. 11. A method according to any one of the preceding claims, characterized in that the glue comprises shellac.
12. Procédé selon la revendication précédente, caractérisé en ce que la colle comprend de la gomme-laque et dans lequel la couche d’accrochage possède une affinité chimique et/ou physique aussi bien pour la gomme-laque que pour l’épilame. 12. Method according to the preceding claim, characterized in that the glue comprises shellac and in which the bonding layer has a chemical and / or physical affinity for both shellac and epilame.
13. Procédé l’une quelconque des revendications précédentes, caractérisé en ce que la colle est appliquée par une buse de projection de colle, la buse de projection étant : i. montée mobile sur un bras de robot multiaxes pour changer son orientation par rapport au premier et/ou second composants sur lequel la colle doit être appliquée ; ou ii. essentiellement verticalement du haut vers le bas, et le premier et/ou second composants sur lequel colle doit être appliquée étant monté mobile sur un bras de robot multiaxes pour changer son orientation par rapport à la buse de projection de colle.13. Process according to any one of the preceding claims, characterized in that the glue is applied by an adhesive spray nozzle, the spray nozzle being: i. movably mounted on a multi-axis robot arm to change its orientation relative to the first and / or second component on which the glue is to be applied; or ii. essentially vertically from top to bottom, and the first and / or second component to which glue is to be applied being movably mounted on a multi-axis robot arm to change its orientation relative to the glue spray nozzle.
14. Procédé l’une quelconque des revendications précédentes, caractérisé en ce que la couche d’accrochage est à base de polymère(s), p.ex. de polyuréthane. 14. Method according to any one of the preceding claims, characterized in that the tie layer is based on polymer (s), eg polyurethane.
15. Procédé selon l’une quelconque des revendications précédentes, caractérisé en ce que la composition de primaire est constituée d’un fluide unique ou est de type bi-composant mélangé in situ. 15. Method according to any one of the preceding claims, characterized in that the primer composition consists of a single fluid or is of the two-component type mixed in situ.
16. Ensemble monobloc de composants horlogers comprenant des premier et deuxième composants susceptibles d’être reliés l’un à l’autre à partir d’un procédé de collage selon l’une quelconque des revendications précédentes. 16. One-piece assembly of watch components comprising first and second components capable of being connected to one another using a bonding process according to any one of the preceding claims.
17. Ensemble monobloc de composants horlogers selon la revendication précédente, caractérisé en ce qu’il comprend une partie de liaison reliant des zones de liaison des premier et deuxième composants.17. One-piece assembly of watch components according to the preceding claim, characterized in that it comprises a connecting part connecting the connecting zones of the first and second components.
18. Ensemble monobloc de composants horlogers selon la revendication précédente, caractérisé en ce que la partie de liaison est formée d’une couche de colle et d’une couche d’accrochage notamment une couche de composition de primaire. 18. One-piece assembly of watch components according to the preceding claim, characterized in that the connecting part is formed of a layer of glue and of a bonding layer, in particular a layer of primer composition.
19. Ensemble monobloc de composants horlogers selon l’une quelconque des revendications 16 à 18, caractérisé en ce que : 19. One-piece assembly of watch components according to any one of claims 16 to 18, characterized in that:
- le premier composant horloger est une ancre d’échappement et le second composant horloger est une palette d’ancre ; - le premier composant horloger est un piton de balancier et le second composant horloger est un ressort spiral ; the first horological component is an escapement anchor and the second horological component is an anchor pallet; - the first watch component is a balance pin and the second watch component is a spiral spring;
- le premier composant horloger est planche de mobile et le second composant horloger est un axe ; - le premier composant horloger est un plot d’index et le second composant horloger est un cadran the first horological component is a mobile board and the second horological component is an axis; - the first watch component is an index plot and the second watch component is a dial
20. Pièce d’horlogerie comprenant un ensemble monobloc de composants horloger selon l’une quelconque des revendications 16 à 19. 20. Timepiece comprising a one-piece set of watch components according to any one of claims 16 to 19.
EP20735065.3A 2019-08-29 2020-06-09 Method for gluing clock components Active EP4022398B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19194407.3A EP3786721A1 (en) 2019-08-29 2019-08-29 Method for bonding clock components
PCT/EP2020/065984 WO2021037408A1 (en) 2019-08-29 2020-06-09 Method for bonding clock components

Publications (2)

Publication Number Publication Date
EP4022398A1 true EP4022398A1 (en) 2022-07-06
EP4022398B1 EP4022398B1 (en) 2023-07-26

Family

ID=67809353

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Application Number Title Priority Date Filing Date
EP19194407.3A Withdrawn EP3786721A1 (en) 2019-08-29 2019-08-29 Method for bonding clock components
EP20735065.3A Active EP4022398B1 (en) 2019-08-29 2020-06-09 Method for gluing clock components

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19194407.3A Withdrawn EP3786721A1 (en) 2019-08-29 2019-08-29 Method for bonding clock components

Country Status (6)

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

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FR1551159A (en) * 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
GB2147612B (en) * 1983-09-29 1986-10-22 Suwa Seikosha Kk Method of producing timepiece dial
JPH11118959A (en) * 1997-10-08 1999-04-30 Seiko Epson Corp Bonding method and dispenser for it
CN1154895C (en) 1999-12-24 2004-06-23 精工电子有限公司 Rate adjusting method for mechanical timepieces
WO2003013779A1 (en) * 2001-08-07 2003-02-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Laser beam welding method
KR20040026710A (en) * 2002-06-13 2004-03-31 세이코 엡슨 가부시키가이샤 Sheet-like seal and its bonding method, dial, method for producing dial, and timepiece
JP2010261906A (en) * 2009-05-11 2010-11-18 Seiko Instruments Inc Timepiece wheel and timepiece
EP2469353A1 (en) * 2010-12-22 2012-06-27 ETA SA Manufacture Horlogère Suisse Assembly of a part not comprising a plastic range
CH707993A2 (en) * 2013-04-22 2014-10-31 Laurent Ferrier Sa improved geometry to anchor.
KR101432980B1 (en) * 2013-04-22 2014-08-27 현민경 Producing method and product of watch bezel
EP2865737A1 (en) * 2013-10-28 2015-04-29 The Swatch Group Research and Development Ltd. Fine epilame product
EP3118692B1 (en) * 2015-07-16 2018-12-26 Nivarox-FAR S.A. Timepiece hairspring to hairspring-stud attachment by gluing
EP3181515A1 (en) 2015-12-15 2017-06-21 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement Composite timepiece and method for manufacturing same
CH713911B1 (en) * 2017-06-22 2022-05-31 Rolex Sa Process for manufacturing an elastomer timepiece component comprising a metal core.
EP3495894B1 (en) * 2017-12-05 2023-01-04 Rolex Sa Method for manufacturing a clock component
EP3674816B1 (en) * 2018-12-24 2022-04-27 The Swatch Group Research and Development Ltd External part of a timepiece or jewelry made of a heavy composite material

Also Published As

Publication number Publication date
KR20220031922A (en) 2022-03-14
EP3786721A1 (en) 2021-03-03
EP4022398B1 (en) 2023-07-26
CN114341749B (en) 2023-06-16
JP7302091B2 (en) 2023-07-03
CN114341749A (en) 2022-04-12
US20220276610A1 (en) 2022-09-01
JP2022542842A (en) 2022-10-07
WO2021037408A1 (en) 2021-03-04

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