CH714845A2 - Method and system for manufacturing at least one watch element intended to be attached to a watch component of a timepiece. - Google Patents

Abstract

The invention relates to a method for manufacturing at least one watch element, in particular an applique, intended to be attached to a watch component such as a dial of a timepiece, said method comprising the following steps: producing a blank of the watch element from an overmoulding injection of injectable material in at least one cavity (5) of a mold relative to the watch element to be manufactured, said cavity being defined by the association at least one impression (3) of a first piece (6a) of the mold with a second piece (6b) of this mold comprising an inlet orifice of the cavity (5) for the injection of said material into said cavity (5); finalization of the watch element comprising a substep of applying a coating to said blank of this watchmaking element overmolded on the second piece (6b), and removing the finalized watch element from the second piece (6b) comprising a sub-step of breaking an injection point linking said watch element to the second piece (6b) and this, in preparation for its mounting on the watch component. The invention also relates to the watch element, as well as a watch component and a timepiece comprising such an element.

Description

Description

FIELD OF THE INVENTION The invention relates to a method and a system for manufacturing at least one timepiece, in particular a wall lamp, intended to be attached to a timepiece component such as a dial. a timepiece.

The invention also relates to a timepiece element for a timepiece component as well as to this timepiece component comprising at least one timepiece element.

The invention also relates to a timepiece comprising such a timepiece component.

BACKGROUND OF THE INVENTION In the state of the art, horological elements such as the appliques intended to be placed on watch dials are most often produced using methods using techniques of decal, or even screen printing or stamping of the lower surface of the dial with the raised parts forming the appliques which are then in this context polished, varnished, or covered with a luminescent pigment. These sconces can also be parts added to the dial by being produced from processes using stamping / machining techniques for a metal plate and then bonding, for example by means of a hot-setting adhesive. .

When we want to obtain high quality parts, the wall lights are most often provided with feet for their attachment to the dial by bonding, welding or riveting. The applications are sketched out from processes using machining or stamping techniques in a profile, then taken up for faceting. However, one of the drawbacks of such methods is related to the fact that they can be the cause of the presence of imperfections on the surfaces of these sconces.

In addition, these different processes often require a lot of handling on the part of the operators, which turns out to be long and tedious given the small size of the parts to be handled, in particular the setting in dial.

Summary of the invention The aim of the present invention is to overcome all or part of the drawbacks mentioned above by proposing a method and a system for implementing this method making it possible to manufacture high quality watch components quickly by limiting manual operations.

To this end, the invention relates to a method of manufacturing at least one timepiece, in particular a wall lamp, intended to be attached to a timepiece component such as a dial of a timepiece , said method comprising the following steps:

- Producing a blank of the timepiece from overmolding by injecting injectable material into at least one cavity of a mold relating to the timepiece to be manufactured, said cavity being defined by the association of at least one impression of a first part of the mold with a second part of this mold comprising an inlet opening of the cavity for the injection of said material into said cavity;

- finalization of the timepiece including a sub-step of applying a coating on said blank of this timepiece overmolded on the second part, and

- removal of the finalized horological element from the second part, comprising a sub-step of rupture of an injection point connecting said horological element to the second part, in anticipation of its mounting on the horological component.

In other embodiments:

- The method includes a step of developing the imprint from an original piece relating to the timepiece to be manufactured;

- the development stage includes a sub-stage of design of said original part implemented using a lithography technique;

- said lithography technique is chosen from the following techniques: optical lithography by ultraviolet projection, optical lithography by DUV projection acronym of “Deep Ultra-Violet”, immersion lithography, double exposure lithography, extreme ultraviolet lithography, lithography by nanoimpression;

- the development stage includes a sub-stage of replication of the original part aimed at making the imprint by reproducing a negative form of the original part using Ni shims or BMG replication techniques;

- The step of making a blank of the timepiece includes a sub-step of forming the mold by assembling first, second and third parts together;

the step of producing a blank for the timepiece comprises a sub-step of overmolding by injecting the injectable material into the mold cavity;

- the overmolding sub-step comprises a phase of injecting the injectable material into the cavity;

the overmolding sub-step comprises a phase for regulating the temperature of said mold, in particular during a period extending before the start of the phase of injecting injectable material into the cavity until the end of this phase of injecting material or even after this end of this injection phase;

CH 714 845 A2

the overmolding sub-step comprises a phase of placing said cavity under vacuum before the phase of injecting the injectable material into this cavity, and

the step of finalizing the timepiece comprises a sub-step of applying a coating on said blank of this timepiece overmolded on the second piece providing for a phase of depositing decorative and / or functional material on the face external visible from this draft.

The invention also relates to a system for manufacturing at least one timepiece element implementing such a method comprising:

- A mold provided with at least one cavity formed by the assembly of a first and a second part of the mold, the cavity participating in the production of a blank of the timepiece element from an overmolding by injection of injectable material on the second part;

a device for applying a coating to said pre-molded overmold on the second part participating in the finalization of the timepiece element, and

- a device for extracting the finalized watch element from the mold.

The invention also relates to a timepiece for a timepiece component capable of being obtained from this process.

The invention further relates to this timepiece component for a timepiece comprising at least one such timepiece element capable of being obtained from this process.

The invention also relates to a timepiece comprising such a timepiece component.

Summary description of the drawings [0014] Other particularities and advantages will emerge clearly from the description which is given below, for information and in no way limitative, with reference to the attached drawings, in which:

fig. 1 is a representation of a system for manufacturing at least one timepiece element, in particular a wall lamp, intended to be attached to a timepiece component such as a dial of a timepiece, according to one embodiment of the invention;

fig. 2 is a sectional view of a part of a mold of the system, according to an embodiment of the invention;

fig. 3 is a flow diagram relating to a method of manufacturing at least one timepiece element, in particular of the wall lamp, intended to be attached to the timepiece component such as a dial of a timepiece, according to one embodiment of the invention;

fig. 4A, 4B and 4C are sectional views of different variants of timepiece element blanks molded onto a second part of the system mold forming a support plate for these blanks, according to an embodiment of the invention;

fig. 5 is a view of the timepiece element blanks all connected to a core formed essentially by a third part of the mold not shown here just like the second part of the mold on which these blanks are supported for a better understanding of the invention, according to a embodiment of this invention;

fig. 6 is a view of the core comprising the blanks of the timepiece element overmolded on the second part, according to an embodiment of this invention;

fig. 7 is a view of the first and second parts of the mold assembled together without the third part, according to an embodiment of the invention;

fig. 8 represents the timepiece element such as a wall lamp comprising two fixing feet and which is supported on the second part of the mold, according to an embodiment of the invention;

fig. 9 shows the timepiece element such as a wall lamp without fixing feet and which is supported on the second part of the mold, according to an embodiment of the invention, and FIG. 10 shows a timepiece comprising a timepiece component provided with at least one timepiece element, according to an embodiment of the invention.

Detailed description of the preferred embodiments With reference to FIG. 1, the invention relates to a manufacturing system 1 of at least one timepiece element 10b, in particular of a wall lamp, intended to be attached to / in a timepiece component 110 such as a one-piece dial

CH 714 845 A2 for timepieces 100. Such a system 1 is capable of being implemented within an automatic assembly installation (or automatic assembly line) dedicated to the manufacture of all or part of a part. 100. In such a context, this system 1 participates in manufacturing and ensuring the distribution of clock elements within this automatic assembly installation.

It will be noted in a non-limiting and non-exhaustive manner that this timepiece element 10b can be a wall lamp, an insert, an index or even a cog element, etc. Furthermore, with regard to the timepiece component 110, the latter can be a dial, a timepiece movement mechanism, a flange or even a bezel, etc.

Such a system 1 includes, in a non-exhaustive and non-limiting manner:

- a mold 2 formed by the reversible assembly of three parts connected together:

• a first part 6a comprising at least one imprint 3 relating to the timepiece element 10b to be manufactured;

• a second part 6b comprising a support plate for each timepiece element 10b manufactured, and • a third part 6c having the shape of a plate.

- An injection device 12 of an injectable material in this mold 2;

- An application device 13 of a coating on a blank of the timepiece element 10b molded onto the second part 6b;

a device 14 for designing an original piece also called a "master" relating to the timepiece element 10b to be manufactured, using in particular lithography techniques, in particular optical lithography by ultraviolet projection, optical lithography by DUV projection ( acronym for "Deep Ultra-Violet"), immersion lithography, double exposure lithography, extreme ultraviolet lithography and / or nanoimprint lithography;

- a device 15 for developing the imprint 3 from the original part, in particular using Ni shims or BMG replication techniques;

a device for putting under vacuum 16 said mold 2 and / or a device for regulating the temperature within the mold 2, and

- a device 22 for extracting the timepiece element 10b from the mold 2, in particular from the second part 6b of this mold 2.

In Figs. 1 and 2, in this mold 2, the assembly of the first part 6a with the second part 6b defines at least one cavity 5 of the mold 2. This first part 6a of the mold 2 comprises an internal face which can be provided with a single imprint 3 or also of several imprints 3 each relating to a timepiece element 10b to be manufactured. These imprints 3 include a hollow shape defined in this planar internal face of the first part 6a. It will be noted that in this configuration, this mold 2 comprises as many cavities 5 as this first part 6a has imprints 3. [0019] In this context, when the system 1 is provided with the device for regulating the temperature 17 within said mold 2, the first part 6a can then comprise a circuit defined in the body of this first part 6a which is essentially arranged below each cavity 3. Such a circuit is connected to the temperature control device 17 which is then able to cause the circulation of a cooling fluid or a heating fluid in this circuit.

In addition, it will be noted that the second part 6b comprises an internal face comprising a zone 4 defined to form with said imprint 3 this cavity 5 in which cavity 5 the injectable material is injected, so as to participate in the design of said blank 10a of the timepiece element 10b. This cavity 5 defines the final shape of the timepiece element 10b which is both produced by the imprint 3 but also by the corresponding zone 4 of the internal face of the second part 6b which is then arranged opposite this imprint 3 when the first and second part 6bs are assembled together.

In this mold 2, this second part 6b is preferably a thin plate having internal and external faces which are planar. The internal face of this second part 6b is intended to be in contact with the internal face of the first part 6a when these first and second parts 6a, 6b are assembled with each other. The thickness of this second part 6b is preferably less than that of the first and third parts 6a, 6c of this mold 2. Such a second part 6b is arranged in this mold 2 by being sandwiched between the first and third parts 6a , 6c. This second part 6b also comprises at least one through channel 8 connecting its internal and external faces to each other, each through channel 8 comprising a first end opening into each corresponding cavity 5 of the mold 2 and a second end opening onto the external face of this second room

CH 714 845 A2

6b. It is understood that the second part 6b comprises at least as many through channels 8 as the mold 2 comprises cavities 5.

In addition, it will be noted that this second piece 6b also participates in the manipulation of this blank 10a of the timepiece element 10b during the completion of the various steps leading to the production of this timepiece element 10b, in particular during application. of the coating on the latter. And finally, this second piece 6b also participates in the manipulation of the timepiece element 10b in anticipation of its mounting on the timepiece component 110.

As we mentioned above, this mold 2 also includes a third part 6c which is intended to be assembled on the external face of the second part 6b. This third part 6c comprises at least one injection circuit 7 of injectable material connected at a first end to the injection device 12 and at a second end to each through channel 8 of the second part 6b. It will be noted that when the system 1 is provided with the vacuum device 16 for said mold 2, the third part 6c can then comprise a vacuum circuit defined in the body of this third part 6c and which is connected at one end to each channel passing through 8 of the second part 6b as well as at another end to this vacuum device 16 capable of causing an air vacuum in each cavity 5 of the mold

2. In this configuration, it is understood that one of the functions of the third part 6c is to ensure the delivery of the injectable material to the through channel 8 for injecting material and to participate if necessary in putting under vacuum the cavity 5 of the mold 2.

Referring to Figs. 4A to 7, when this timepiece 10b is a wall light it may include at least one foot 21 or, on the contrary, be devoid of it. When the timepiece 10b does not have a foot 21, the cavity 5 is formed by assembling an imprint 3 included in the internal face of the first part 6a with the corresponding zone 4 of the internal face of the second Exhibit 6b. In this context, this corresponding zone 4 of the internal face of the second part 6b which participates in the formation of this cavity 5 comprises an inlet orifice 9 for the injectable material in this cavity 5. This inlet orifice 9 forms the first end of the through channel 8 formed in the second part 6b which opens into the cavity 5 and the second end of which is connected to the injection device 12 of injectable material via the injection circuit 7 defined in the third part 6c .

When the timepiece 10b comprises at least one foot 21, the cavity 5 is formed by assembling an imprint 3 included in the internal face of the first part 6a with the corresponding zone 4 of the internal face of the second part 6b provided with at least one housing provided for the formation of said at least one foot 21. This internal face of the second part 6b comprises as many housings as the timepiece element 10b comprises feet 21. A housing formed in the internal face of the second part 6b corresponds to a blind hole or even to a hole comprising at its bottom the single inlet orifice 9 of the material injectable into the cavity 5. As mentioned previously, this inlet orifice 9 forms the first end of the through channel 8 formed in the second part 6b which opens into the cavity 5 and the second end of which is connected to the device 12 for injecting injectable material via u injection circuit 7 defined in the third part 6c. It will be noted that in this configuration, when the cavity 5 comprises one or more housings corresponding to blind holes, the inlet orifice 9 is then defined in a corresponding zone 4 of the internal face of the second part 6b of course devoid of such accommodation.

It will be noted that the portion of injectable material which is solidified in the inlet 9 of the cavity 5 forms an injection point 11 which is defined to be broken in particular during the separation of the timepiece element 10b fabricated from the second part 6b as described below. In fact, this injection point 11 maintains the timepiece element 10b produced on the second part 6b by binding it to a core 18 formed in this mold 2. It will be noted that this core 18 comprises a first part 19b formed by the solidification of the injectable material in the through channel and / or the inlet orifice of the cavity 5, and a second part 19a formed by the solidification of the injectable material in the injection circuit formed in the third part 6c.

Referring to FIG. 4A, it will be noted that when the cavity 5 is defined to form a timepiece element 10b comprising at least one foot 21 with an inlet orifice 9 included in the bottom of the housing provided for the formation of said foot 21, the through channel 8 is coincident with this inlet 9.

In addition, in this configuration, it is well understood that the imprint 3 comes to form the visible part of the timepiece element 10b such as a wall lamp when it is mounted on a dial and the corresponding zone 4 of the second piece 6b for its part forming the connection part of this wall lamp with the dial from the feet of this wall lamp or from a non-visible face of the latter.

In this system 1, the device 13 for applying a coating on a blank 10a of the timepiece element 10b molded onto the second part 6b is suitable for applying / depositing a coating comprising a decorative material of metallic type and / or a functional material on the external surface of the blank 10a of the timepiece element 10b. Such a device 13 may comprise a printing module provided in particular with a member for ejecting this decorative and / or functional material, and / or with a member for spraying such a material and / or with a member spraying a film / film comprising such a material. Note that the sputtering device can be a direct current sputtering device or a high power pulsed magnetron sputtering device better known by the acronym HIPIMS for "High Power Impulse Magnetron Sputtering". It should be noted that other techniques can be used, such as those known as “hot transfer” of the coating on the blank.

CH 714 845 A2 In this system 1, the decorative material can be formed from an ink, or from a metal or a metal alloy. This decorative material contributes to modifying the aesthetic aspect of the timepiece element 10b by being applied to the blank 10a of this timepiece element 10b. As regards the functional material, it aims to confer on the timepiece element 10b physical and / or chemical functional characteristics linked for example to:

- electrical conductivity, semiconductor or insulating nature;

- semi-conductivity;

- electroluminescence;

- photoluminescence (for example a reaction to ultraviolet radiation);

- phosphorescence;

- "X-chromism" (photochromic, electrochromic, thermochrome, ionochrome, mechanochrome ...);

- electroactivation;

- magnetism;

- etc.

In this system 1, the injectable material used is for example an organic and / or composite material, or a metallic or ceramic material or else a thermo-deformable, thermosetting, or thermoplastic material. As examples, this material may include the following elements:

- charged plastic type SLN (phosphorescent) and color pigments and / or fluorescent;

- ceramic filled polymer with and without color pigment;

- an additive to give a metallic / shiny appearance, such as aluminum powder, metallic powder;

- additive making the polymer conductive (for technical reasons or for chemical / galvanic or other post-treatment);

- additive giving an aesthetic rendering copying a material (mother-of-pearl, stone ...);

- additive giving specific mechanical and / or tribological characteristics;

- BMG better known by the acronym "Bulk Metallic Glass";

- stainless material;

- sinterable metallic material;

- ceramic;

- silicon, and / or

- combination of one or the other of these elements between them or several of them between them.

In this configuration, it is well understood that such a system 1 makes it possible to manufacture several watch components 110 simultaneously with a first part 6a then comprising several imprints 3 and being able to participate in particular with the second part 6b in the obtaining a series of watch components 110 molded onto this second part 6b. By being thus molded onto the same second piece 6b, these timepiece components 110 can be easily distributed in the installation for automatic assembly of all or part of a timepiece 100. As an alternative, it is clear that the first piece 6a may include a single imprint 3 relating to the timepiece element 10b to be manufactured.

Furthermore, it will be noted that the second part 6b and the first part 6a may include at least one positioning element 20 (visible in FIG. 6) of this second part 6b relative to this first part 6a so as to ensure the positioning of the corresponding zone 4 of the second part 6b opposite the corresponding imprint 3.

Referring to FIG. 3, this system 1 implements a method of manufacturing at least one timepiece element 10b, in particular a wall lamp, intended to be attached to a timepiece component 110 such as a dial of a timepiece 100.

Such a method comprises a step 30 of developing the imprint 3 in the first part 6a from an original part relating to the timepiece element 10b to be manufactured. We understand that this step 30 is able to participate in the production of as many fingerprints 3 as there are timepieces 10b to be manufactured, so that such imprints 3 are included on the same first Exhibit 6a. This step 30 provides for the production of an imprint 3 from an original piece otherwise called "master". This original piece has a shape similar to that of the timepiece 10b to be manufactured. It will be noted that the implementation of this step 30 may require as many original pieces as there are fingerprints 3 to be produced.

In this context, the development step 30 includes a design sub-step 31 of said original part implemented using a lithography technique. This lithography technique is chosen from the following techniques known from the state of the art and which are not described in more detail here: optical lithography by ultraviolet projection, optical lithography by DUV projection, immersion lithography, double exposure lithography, lithography extreme ultra-violet, lithography by nanoimpression.

This development step 30 then includes a replication sub-step 32 of the original part aimed at making the imprint 3 by reproducing a negative form of the original part. This sub-step 32 provides in particular

CH 714 845 A2 the implementation of replication techniques of the Ni shims or BMG type (acronym "Bulk Metallic Glass") known from the state of the art and which are not described in more detail here.

Thereafter, the method comprises a step 33 of making a blank 10a of the timepiece 10b from an overmolding by injection of injectable material into at least one cavity 5 of the mold 2. This step of embodiment 33 comprises a substep of forming 34 of the mold 2 by assembling the first, second and third parts 6a, 6b, 6c therebetween. This substep 34 provides for a reversible assembly phase 35 of the third part 6c with the second part 6b which is itself assembled to the first part 6a. This assembly is carried out so as to form the cavity or cavities 5 of the mold 2 and also to ensure an optimal connection between the injection circuit 7 formed in the third part 6c and the through channel or channels 8 defined in the second part 6b .

This step 33 then includes an overmolding sub-step 36 by injecting the injectable material into the cavity 5 included in the mold 2. This sub-step 36 aims to achieve overmolding of the blank 10a 10a of the timepiece element 10b on the corresponding zone 4 of the internal face of the second piece 6b. This sub-step 36 includes an injection phase 39 into this cavity 5 of the injectable material coming from the injection device 12 of this material. In this context, the injectable material from the injection device 12 is introduced into the cavity 5 by traversing the injection circuit 7 of injectable material defined in the third part 6c and the through channel 8 included in the second part 6b connecting this injection circuit 7 to said cavity 5. Thus, the injectable material then occupies the entire volume defined in the cavity 5 by overmolding the corresponding area of the internal face of the second part 6b arranged opposite the imprint 3 in the optics of forming this blank 10a of the timepiece element 10b.

Such an overmolding sub-step 36 can include the following phases:

- A vacuum phase 37 of said cavity 5 before carrying out the injection phase 39 of the injectable material in this cavity 5, and / or

a phase 38 for regulating the temperature of the cavity 5, in particular during a period extending before the start of the injection phase 39 of injectable material into the cavity 5 until the end of this injection phase 39 of material or even after this end of this infection phase 39.

Such phases of vacuum 37 and temperature regulation 38 are aimed at ensuring structural homogeneity of the blank 10a of the timepiece element 10b during its overmolding on the second part 6b in order to eliminate the presence of any defect likely to be present on the visible external face of this blank 10a. Such a defect may for example reside in the presence of a weld line on the visible external face of the blank 10a, formed following the junction of two streams of flow of injectable material in the cavity 5. Such a line of soldering is often present on blanks 10a of watchmaking elements 10b relating to sconces having the shape of a number 6, 8 or even 0. During the implementation of the vacuuming phase 37, the fluid present in the cavity 5 for example a gas like air is then evacuated from the cavity 5 before the completion of the injection phase.

When carrying out the temperature regulation phase 38 of the cavity 5, the temperature of the cavity 5 is then brought to a temperature which is higher or substantially higher than the temperature of the injectable material from the device d injection 12 of this material before the completion of the injection phase. Thereafter, once the injection phase 39 of the injectable material has been carried out, that is to say completed, the cavity 5 is immediately cooled.

The method then comprises a step 40 of finalizing the timepiece element 10b comprising a substep of application 41 of a coating on said blank 10a of this timepiece element 10b molded onto the second part 6b. This sub-step 41 comprises a disassembly phase 42 of the first part 6a of the second part 6b and a deposition phase 43 of the decorative and / or functional material on the visible external face of the blank 10a of the timepiece element 10b molded onto this second part 6b. By way of example, this deposition phase can provide for the application on this external face of the blank 10a of a decorative material comprising a metallic composition. Such a deposition phase can then be carried out using a technology implementing direct current cathode sputtering or else a high power pulsed magnetron sputtering better known by the acronym HIPIMS for "High Power Impulse Magnetron Sputtering".

The method then provides for a step 44 of removing the timepiece 10b from the second piece 6b. This step 44 comprises a sub-step of rupture 45 of the injection point 11 connecting said timepiece element 10b to the second piece 6b and this, in anticipation of its mounting on the timepiece component 110. This step 44 includes a sub-step d application 46 of a force on the second piece 6b and / or on the timepiece element 10b aiming to cause a movement in rotation or in translation of this timepiece element 10b relative to the second piece 6b. By way of example, with reference to FIGS. 8 and 9, when the timepiece 10b is a wall lamp, the force is then applied to the feet 21 of this wall lamp from an extractor of the extraction device 22 in order to cause it to move in translation relative to the second Exhibit 6b. If this wall lamp does not have a foot 21, the force is then applied to the visible face of the timepiece element 10b in order to cause its movement in rotation relative to the second part 6b and cause the injection point to rupture.

Once the timepiece element 10b extracted from this second part 6b, the latter is then mounted on the timepiece component 110. When this timepiece element 10b is a wall lamp and composing it a dial, the latter may include openings capable of cooperate with the feet 21 of the wall lamp for its mounting on this dial. Fixing the feet

CH 714 845 A2 in these openings can be produced from an adhesive, in particular an adhesive which is capable of ensuring this fixing, for example by changing state under the action of relative techniques:

- photosensitivity;

- heat supply;

- a reaction to humidity in the air;

- to an anaerobic situation.

If this wall lamp does not have feet 21, it is then fixed to this dial at the corresponding location from, for example, this hot-melt adhesive.

claims

Claims (15)

1. Method of manufacturing at least one timepiece (10b), in particular a wall lamp, intended to be attached to a timepiece component (110) such as a dial of a timepiece (100), said process comprising the following steps: - Production (33) of a blank (10a) of the timepiece (10b) from an overmolding by injection of injectable material into at least one cavity (5) of a mold (2) relating to the timepiece (10b) to be manufactured, said cavity being defined by the association of at least one imprint (3) of a first part (6a) of the mold (2) with a second part (6b) of this mold (2 ) comprising an inlet orifice (9) of the cavity (5) for injecting said material into said cavity (5); finalization (40) of the timepiece element (10b) comprising a substep of application (41) of a coating on said blank (10a) of this timepiece element (10b) molded onto the second part (6b), and - removal (44) of the timepiece element (10b) finalized from the second part (6b) comprising a sub-step of rupture (45) of an injection point (11) connecting said timepiece element (10b) to the second part (6b) and this, in anticipation of its mounting on the timepiece component (110). 2. Manufacturing method according to the preceding claim, characterized in that it comprises a step of developing (30) the imprint (3) from an original piece relating to the timepiece (10b) to be made. 3. Manufacturing method according to the preceding claim, characterized in that the development step (30) comprises a design sub-step (31) of said original part implemented using a lithography technique. 4. Method according to the preceding claim, characterized in that said lithography technique is chosen from the following techniques: optical lithography by ultraviolet projection, optical lithography by DUV projection, immersion lithography, double exposure lithography, extreme ultra-violet lithography, lithography by nanoimpression. 5. Manufacturing method according to any one of claims 2 to 4, characterized in that the production step (30) comprises a sub-step of replication (32) of the original part intended to make the imprint ( 3) by the reproduction of a negative form of the original piece using Ni shims or BMG replication techniques. 6. Manufacturing method according to any one of claims 1 to 5, characterized in that the step of producing (33) a blank (10a) of the timepiece (10b) comprises a substage of formation ( 34) of the mold (2) by assembling first, second and third parts (6a, 6b, 6c) therebetween. 7. The manufacturing method according to any one of claims 1 to 6, characterized in that the step of producing (33) a blank (10a) of the timepiece (10b) comprises a sub-step of overmolding ( 36) by injecting the injectable material into the cavity (5) of the mold (2). 8. Manufacturing process according to the preceding claim, characterized in that the overmolding sub-step (36) comprises an injection phase (39) of the injectable material in the cavity (5). 9. Manufacturing method according to one of claims 7 and 8, characterized in that the overmolding sub-step (36) comprises a temperature regulation phase (38) of said mold (2) especially during a period s' spreading before the start of the injection phase (39) of injectable material into the cavity (5) until the end of this injection phase (39) of material or even after this end of this injection phase (39). 10. The manufacturing method according to one of claims 7 to 9, characterized in that the overmolding sub-step (36) comprises a vacuum phase (37) of said cavity (5) before the injection phase (39) of the injectable material in this cavity (5). 11. The manufacturing method according to any one of claims 1 to 10, characterized in that the finalization step (40) of the timepiece (10b) comprises an application sub-step (41) of a coating on said blank (10a) of this timepiece (10b) molded onto the second part (6b) providing a deposition phase (43) of decorative and / or functional material on the visible external face of this blank (10a). 12. System (1) for manufacturing at least one timepiece element (10b) implementing the method according to any one of claims 1 to 11 comprising: CH 714 845 A2 - A mold (2) provided with at least one cavity (5) formed by the assembly of a first and a second part (6b) of the mold (2), the cavity (5) participating in the production of 'a blank (10a) of the timepiece (10b) from an overmolding by injection of injectable material on the second part (6b); - an application device (13) of a coating on said blank (10a) molded onto the second part (6b) participating in the finalization of the timepiece element (10b), and - a device (22) for extracting the timepiece element (10b) finalized from the mold (2). 13. Timepiece element (10b) for a timepiece component (110) capable of being obtained from the method according to any one of claims 1 to 11. 14. Timepiece component (110) for a timepiece (100) comprising at least one timepiece element (10b) capable of being obtained from the method according to any one of claims 1 to 11. 15. Timepiece (100) comprising a timepiece component (110) according to the preceding claim.