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WO2018088217A1 - Cadran pour pièce d'horlogerie, pièce d'horlogerie, et procédé de fabrication d'un cadran pour pièce d'horlogerie - Google Patents

Cadran pour pièce d'horlogerie, pièce d'horlogerie, et procédé de fabrication d'un cadran pour pièce d'horlogerie Download PDF

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Publication number
WO2018088217A1
WO2018088217A1 PCT/JP2017/038526 JP2017038526W WO2018088217A1 WO 2018088217 A1 WO2018088217 A1 WO 2018088217A1 JP 2017038526 W JP2017038526 W JP 2017038526W WO 2018088217 A1 WO2018088217 A1 WO 2018088217A1
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WIPO (PCT)
Prior art keywords
aqueous solution
timepiece
thin film
container
crystal growth
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Ceased
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PCT/JP2017/038526
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English (en)
Japanese (ja)
Inventor
勝彦 賀来
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YK Precision Co Ltd
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YK Precision Co Ltd
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Priority to JP2018518747A priority Critical patent/JPWO2018088217A1/ja
Publication of WO2018088217A1 publication Critical patent/WO2018088217A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • 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

Definitions

  • the present invention relates to a timepiece dial, a timepiece thereof, and a method of manufacturing a timepiece dial, and in particular, a timepiece dial suitable for a high-quality timepiece having an elegant elegance, calmness and profound feeling, and the timepiece and timepiece It is related with the manufacturing method of a board.
  • the white butterfly shell has a beautiful pearl layer on the inside, and it is currently distributed as a watch dial as a by-product of pearls that are raised by pearl farmers. ing.
  • the history of timepiece dials as a product on the market has been at least 30 years, and various technologies related to shell dials have been proposed.
  • the structure of the pearl layer is a structure in which the colorless and transparent aragonite layer 1 is bonded to each other through a protein sheet (conchiolin) (not shown) and laminated in a cross-sectional brick shape or stepped shape.
  • a protein sheet (conchiolin) (not shown) and laminated in a cross-sectional brick shape or stepped shape.
  • FIG. 8 (a) if the pearl surface is smooth, the reflection (regular reflection) of light is good.
  • gloss gloss
  • the second of the above visual principles is said to be interference, which is related to the pearl orientation effect.
  • the reflected light A ′ and B ′ from the nacreous layer is reflected in a direction in which the optical path difference is an integral multiple of the wavelength. In this case, it is strengthened and weakened in the direction that is an odd multiple of a half wavelength.
  • This interference effect (prism effect) provides a beautiful striped gloss (shine).
  • the third principle of visual recognition is color tone, which is said to be directly related to the properties (color development) of conchiolin.
  • Flatness here refers to the degree of shading, color unevenness, and steepness that can be visually recognized on the surface of the pearl layer from the reflected light.
  • Degree surface geometric tolerance
  • the flatness is particularly important in such a case.
  • the flatness In the reflected light from the surface of the flat pearl layer as described above, for example, if the flatness is too low (bad), the shading and color change on the surface of the pearl layer will become excessively intense, and it will not be wrinkled, but will be decorative or apparent.
  • the flatness When the flatness is moderately high (good), the color change and unevenness are moderately suppressed without impairing the beauty of the interference color, while the flatness is moderately high (good). It can be said that it is a general sense of image that it can give a certain sense of luxury. Similarly, if the intensity of the reflected light is too strong, the glossiness will be excessively increased and the image will be overstated, and the sense of luxury and solidness will be impaired.
  • the artificially cultured white butterfly shells that are currently produced in large quantities and at low cost and are the mainstream in the market are about 4 years from artificial hatching to flying to the beach, whereas natural shellfish are usually 10-15. Since natural shells are collected, natural shells are larger than cultured shells, and the reflected light from the nacreous surface of high-quality natural shells is modest as described above compared to cultured shells. In many cases, it has a sense of quality and profoundness. Furthermore, in the field of wristwatches, the overall trend toward larger sizes, including women's, has become a recent trend, and in response to this, the demand for large-sized dials has increased. A watch with a white butterfly shell dial is used to increase its rarity and boost its popularity.
  • the document 1 shows a display board in which a transparent substrate is disposed on the viewing side of a substrate body made of white mussel or the like and a transparent substrate and the substrate body are separated by a predetermined structure using a frame member.
  • the space formed between the substrate main body and the transparent substrate is designed to give a depth and depth to the pattern of the substrate main body.
  • a display board decorated with a white butterfly shell is shown, and the shell forming layer is configured to be laminated with a metal thin film layer or a white fluorescent coating layer. According to the structure, the unique brilliant color of the shellfish is made to appear clearly and beautifully.
  • timepiece dial plate substrate made of polycarbonate by various layer forming means such as spin coating, painting, plating, CVD, vapor deposition and thermal spraying.
  • layer forming means such as spin coating, painting, plating, CVD, vapor deposition and thermal spraying.
  • a timepiece dial plate having a sulfide layer and a silicon oxide layer formed on the front and back surfaces with a predetermined thickness is shown, and an aesthetic appearance and durability are improved.
  • Patent Document 4 As an example of this type of prior art, there is Patent Document 4 as an example, and at a predetermined reaction time and a dropping time, a water-soluble carbonate solution is dropped into a predetermined concentration of water-soluble calcium salt solution to cause a reaction. A method for producing a form of aragonite calcium carbonate is shown.
  • Patent Document 5 discloses a method for producing a pearl layer.
  • the formation of multilayer crystals of natural pearls is attempted by adding a predetermined pearl protein to a crystal-forming mother liquor composed of a calcium carbonate supersaturated solution.
  • the means for laminating and coating a different member on the shell material is a high-class that tends to exhibit the original goodness of the shell material with as simple a structure as possible.
  • it is difficult to approve and the configuration is complicated and the productivity and cost are likely to deteriorate, and the durability and maintainability of the watch are likely to be impaired.
  • it is difficult to approve any means for weakening the reflected light by subjecting the pearl layer itself to some kind of processing (uneven shape, pattern, curved surface processing, etc.).
  • the dial surface is roughened by special polishing and the reflected light is diffusely reflected to weaken it.
  • the dial surface cannot be glossed, which is extremely inappropriate.
  • the technology for synthesizing plate-like calcium carbonate as in Patent Document 4 is a means for industrially producing functional materials useful exclusively for paints, resins, etc. Therefore, it cannot be applied as a coating means that can obtain the desired optical effect.
  • the technology for synthesizing plate-like calcium carbonate as in Patent Document 4 is a means for industrially producing functional materials useful exclusively for paints, resins, etc. Therefore, it cannot be applied as a coating means that can obtain the desired optical effect.
  • no proposal has been made yet about an optimal method for efficiently synthesizing a film crystal layer that satisfies the conditions required for the above-mentioned problems.
  • Patent Document 5 is intended to be used as, for example, a building structure, furniture, or a predetermined new medical material.
  • the above-mentioned problem is completely different from the problem and the direction of the purpose.
  • the literature means is a means of forming a natural pearl layer composed of a layered crystal of a predetermined protein and calcium carbonate, and it is essential to add a specific protein that is purified and extracted through a complicated process. At the same time, the manufacturing process is extremely complicated. For this reason, there is no disclosure or suggestion regarding means for stably growing calcium carbonate crystals containing no protein.
  • the means of the same document cannot be easily applied, for example, as a clock face dial manufacturing means, and even if a nacreous layer is obtained, it is easy from the viewpoint of cost and management of the product. It is difficult to adopt. Moreover, since the natural pearl layer structure is inherently difficult to produce artificially, there is a possibility that stable productivity of the product cannot be ensured. For this reason, even if it refers to the same document in which the problem and solution of the invention are completely different, the above problem cannot be solved substantially.
  • the present invention was developed as a result of intensive studies by the applicant of the present invention in order to solve the above-described problems, and the object of the present invention is to reduce reflected light optimally and to provide moderately modest light intensity / flatness.
  • the watch dial with its high quality reflected light that is equivalent to or better than that of natural shells and can be applied to artificially cultured shells easily. It is to provide a manufacturing method of a dial.
  • the invention according to claim 1 is composed of a workpiece having a polishing processing part on the surface of the pearl layer, which has been subjected to surface polishing in a state of being cut out from a material having a pearl layer and sliced.
  • the work is a timepiece dial in which a thin film made of calcium carbonate crystals having a predetermined thickness and grown in a substantially vertical direction is formed from the polishing processing unit.
  • the invention according to claim 2 comprises a container provided with a conducting part for flowing the solution into the inside and a conducting part for flowing out the solution, and a stirring member capable of maintaining the stirring state of the solution when manufacturing the timepiece dial, While the inside of the container is sealed from the outside, the solution is allowed to flow into the container through the conduction part in a sealed immersion state in which the workpiece is immersed in the solution, and the solution is allowed to flow out of the container through the conduction part to grow a thin film. It is a dial for a clock made up of.
  • the invention according to claim 3 is a timepiece in which a timepiece dial is mounted on the surface of the movement mechanism portion of the timepiece main body.
  • the invention according to claim 4 passes through a workpiece forming step of forming a workpiece material having a pearl layer and a polishing processing step of polishing the surface of the workpiece material to form a polishing processing portion when manufacturing the timepiece dial.
  • a thin film is formed through a crystal growth process. This crystal growth process polishes the thin film by immersing the work in an aqueous solution for crystal growth containing at least magnesium ions, calcium ions, and carbonate ions.
  • This is a method for manufacturing a timepiece dial in which a part surface is grown in a substantially vertical direction with the growth surface as a starting point.
  • the invention of claim 5 is a timepiece dial manufacturing method in which the stirring state of the aqueous solution is maintained in the crystal growth step.
  • the invention according to claim 6 is a crystal growth step in which the work is attached to a sheet and immersed, the aqueous solution is allowed to flow into the container and out of the container, and the rotating body is rotated in the aqueous solution. It is a manufacturing method of the timepiece dial which maintained a stirring state.
  • the invention according to claim 7 is a method of manufacturing a timepiece dial in which the workpiece is directly attached to a sheet provided substantially horizontally and the container is covered.
  • the invention according to claim 8 is for a timepiece in which the next step is a surface treatment step for adjusting the surface of the thin film after the crystal growth step, and the next step is a confirmation step for confirming the thin film after the surface treatment step. It is a manufacturing method of a dial.
  • the invention in claim 9 is a timepiece dial manufacturing method in which the next step is a finishing step and / or a cutting step after the surface treatment step or the confirmation step.
  • the invention according to claim 10 is a method for producing a timepiece dial, wherein the crystal growth aqueous solution used in the crystal growth step is a calcium carbonate supersaturated aqueous solution in which sodium hydrogen carbonate is mixed in a predetermined ratio with a calcium chloride aqueous solution containing magnesium. is there.
  • the incident light is appropriately attenuated by this thin film without impairing the nature of the light incident on the natural pearl layer, so that the light intensity and flatness of the reflected light is also appropriately suppressed, and it is elegant and luxurious. Reflected light can be provided.
  • this thin film is grown from a polished portion having a high flatness (flatness), a structure with a high degree of alignment and homogeneity can be obtained, so that strong and flashy reflection of incident light on the thin film surface can be appropriately achieved. It is reduced to provide a modest and elegant elegance, and a beautiful and high-quality gloss is obtained.
  • the timepiece dial has a simple structure including a container having a conduction part for flowing in and out of the solution and a stirring member, and the workpiece is a solution while the inside of the container is sealed from the outside. Since the solution is allowed to flow into the container through the conduction part in the sealed immersion state immersed in the container, and the solution is caused to flow out of the container through the conduction part to grow the thin film, it is appropriate for the workpiece.
  • a thin film crystal having a thickness and quality can be reliably formed, and thus a desired timepiece dial composed of a pearl layer having an elegant and elegant luster can be manufactured at low cost and stably.
  • the surface of the polishing portion having a high flatness (flatness) is grown in a substantially vertical direction as a starting point of the growth surface, a high alignment degree necessary for appropriately attenuating the reflected light
  • a thin film composed of a homogeneous crystal layer can be reliably formed, and high flatness (flatness) can be obtained even on the surface of the thin film, thereby obtaining high-quality gloss.
  • the workpiece surface can be appropriately exposed to the aqueous solution flow, and the crystal growth of the thin film can be effectively promoted.
  • the work is attached to the sheet and the inflow and outflow of the aqueous solution into and out of the container is continued, the work is exposed to the aqueous solution flow while being securely fixed to the container and stationary.
  • the replacement of the aqueous solution is promoted in the container, and the supersaturated state of the aqueous solution is appropriately maintained, so that the crystal growth of the thin film on the workpiece surface can be further promoted.
  • the stirring is performed by the rotation of a rotating body such as a magnetic rotating body, the container can be easily and appropriately stirred even in a sealed state with respect to the outside air, and the stirring state of the aqueous solution is further appropriately maintained. Therefore, it can be set as a very suitable environment for the growth of the thin film formed by laminating calcium carbonate crystals inside the container.
  • the thin film formed on the workpiece surface is formed in the crystal growth step. It is very suitable for crystal growth with uniform and uniform thickness.
  • the formed thin film can be evaluated and confirmed to repeat the crystal growth process and the surface treatment process, and the thin film thickness and surface flatness (flatness) can be determined according to product requirements. ) And the like can be adjusted, so that an optimum thin film can be formed according to the desired requirements.
  • the finishing step for finishing the surface of the thin film by providing a finishing step for finishing the surface of the thin film, it is possible to appropriately adjust the gloss finish of the surface of the watch dial according to product requirements, for example, mat finish, mirror finish, etc. In addition, it is possible to respond appropriately according to preferences, such as the finish of hard and soft looks, and it is also possible to greatly expand the selection range of products.
  • the aqueous solution for crystal growth is a calcium carbonate supersaturated aqueous solution in which sodium hydrogen carbonate is mixed with a calcium chloride aqueous solution containing magnesium at a predetermined ratio.
  • a calcium carbonate supersaturated aqueous solution in which sodium hydrogen carbonate is mixed with a calcium chloride aqueous solution containing magnesium at a predetermined ratio.
  • (A) is the microscope picture which image
  • (b) is the microscope which formed the thin film of this invention on the workpiece
  • (A) is the microscope picture which image
  • (b) is the microscope which image
  • FIG. It is a schematic diagram of an example of a timepiece using the timepiece dial of the present invention. It is a schematic cross section explaining the reflection of incident light in the vicinity of the nacreous layer surface, (a) is a case where the surface flatness (flatness) is high and there are many regular reflections, (b) is the surface flatness (flatness). ) Is low and there are many irregular reflections.
  • FIG. 1 is a flowchart showing a method for manufacturing a timepiece dial in this embodiment (this example).
  • the manufacturing process of this example includes a workpiece forming process 2, a polishing process 3, a crystal growth process 5, a surface treatment process 6, a confirmation process 7, a finishing process 8, and a cutting process 9.
  • a white butterfly shell is described as an example, but this shell may be either a natural shell or a cultured shell, and the present invention further includes various kinds of pearl layers. Widely applicable to materials.
  • the white butterfly was discovered in the North Sea of Australia more than 100 years ago and has a nacre on the inside of the shell.
  • natural shells have been used exclusively for decorative items.
  • artificial farms are spreading all over the world and the shape and quality can be controlled.
  • most of the shells available on the market are farmed shells.
  • the nacreous layer of the shell made of a multilayer structure has a thickness of about 0.3 to 2.5 ⁇ m and aragonite (araleite-type crystal, although there are shellfish species and individual differences. )
  • aragonite araleite-type crystal, although there are shellfish species and individual differences.
  • Such a laminated structure is likened to a relationship between brick and mortar.
  • the substance ratio is about 95 to 5 for calcium carbonate and protein, except for a slight amount of water.
  • FIG. 6 (b) the basic principle in which light incident on the nacreous layer is reflected to cause interference is outlined.
  • the nacreous layer shown in FIG. 6 has a thickness d, a refractive index n, a wavelength ⁇ , and a reflection angle ⁇ .
  • n refractive index
  • ⁇ wavelength
  • ⁇ reflection angle
  • the reflected light in which the reflected light C ′ is strengthened and weakened is discretely distributed to form a rainbow-like striped pattern as a whole.
  • aragonite crystals are colorless and transparent, it is considered that the pigment contained in the conchiolin interposed between layers overlaps several times to give a unique color to the reflected light.
  • the principle of reflected light is further complicated such that the layer thickness and crystal structure are not uniform, and reflection / transmission also occurs from each layer of the crystal. It can be inferred that at least the thickness d is close to the visible light wavelength and that the uniformity is high in order to obtain a beautiful gloss.
  • the work forming process 2 for forming the work material of this example includes a cutting process 21, a cutting process 22, an accumulating process 23, and a slicing process 24.
  • the processes are arbitrarily selected and changed according to the implementation. Is possible.
  • a shell operation as a material is cut out with a predetermined drilling machine.
  • a predetermined drilling machine basically, the position of the shell to be cut out is determined, and then drilled in a cylindrical shape directly from the nacre layer side to the outer shell side with a rotary drill.
  • the size is, for example, 20 mm to 38 mm in diameter.
  • both end surfaces of the cut-out cylindrical material are formed with a predetermined double-side rubbing machine to form a clean cylindrical shape.
  • the shell outer shell side is removed, leaving only the nacreous component of the material, and is molded in the subsequent process so as to be easy to handle.
  • the materials processed as described above are classified according to size, and the materials classified according to size are adhered to each other by an adhering means and provided in a long cylindrical shape.
  • the cylindrical material is sliced by a predetermined slicing machine and formed into an extremely thin disk shape.
  • the thickness of the disk can be arbitrarily selected, and is, for example, 0.1 mm to 0.47 mm.
  • the work 4 is manufactured by polishing the surface of the work material manufactured through the work material forming process 2.
  • This step is performed to improve the flatness (flatness) of the surface of the workpiece material, and the polishing processing unit 40 finished with extremely high precision is formed on the surface of the pearl layer of the workpiece 4.
  • mirror polishing is performed to such an extent that a flatness of about ⁇ 10 ⁇ m is obtained, for example. If such a highly accurate surface polishing process can be performed on the workpiece material as described above, a polishing apparatus and other processing methods used for the polishing process can be arbitrarily selected.
  • this crystal growth uses an aqueous solution for crystal growth containing at least magnesium (Mg 2+ ) ions, calcium ions and carbonate ions.
  • the work 4 is immersed in an aqueous solution 53 to which sodium hydrogen carbonate is added to grow the thin film 41 in a substantially vertical direction with the surface of the polishing processing unit 40 as the starting point of the growth surface.
  • the stirring state of the aqueous solution 53 is maintained, the work 4 is attached to the sheet 54 and immersed therein, the aqueous solution 53 flows into and out of the container, and the magnetic rotating body in the aqueous solution 53 By rotating 55, the stirring state and the supersaturated state of the aqueous solution 53 are maintained.
  • the crystal form of calcium carbonate has three types of homogeneity, mainly calcite (calcite), aragonite (meteorite), and vaterite (faterite).
  • This crystal is composed of ionic bonds of calcium ions and carbonate ions, but the phases differ depending on the factors that form the crystals.
  • the shape of aragonite is a pseudo-hexagonal structure with a ⁇ 110 ⁇ plane as a twin plane. For example, when a crystal is grown under free conditions such as in a beaker, the crystal grows without directivity and becomes a crystal having a radial shape or a shape like a spotted shape with impurities as nuclei.
  • the laminated aragonite crystal structure can be precipitated in a predetermined manner by ionic bonds between calcium ions and carbonate ions in a predetermined environment (normal temperature and pressure) in principle.
  • the solute for crystal growth that can form the (thin film 41) in the polishing processing unit 40 can be arbitrarily selected depending on the implementation.
  • an aqueous solution comprising the above-mentioned bicarbonate, a water-soluble calcium salt such as calcium chloride, calcium bromide, calcium iodide, calcium nitrate, or calcium acetate, and a water-soluble carbonate such as sodium carbonate, potassium carbonate, or ammonium carbonate.
  • an aqueous solution capable of supplying carbonate ions or bicarbonate ions can be used.
  • a polishing processing unit 40 having a high flatness (flatness) is provided on the surface of the workpiece 4 in advance, and the polishing processing unit 40 is used as a starting point for crystal growth in a substantially vertical direction.
  • the growth surface of the aragonite crystal is gradually and uniformly grown toward the end, and finally the thin film 41 made of calcium carbonate crystal having high crystal orientation and homogeneity as a whole is formed. Yes.
  • FIG. 2 and 3 schematically show an enlarged view of a main part of the timepiece dial manufacturing apparatus of the present invention in which the thin film 41 is formed on the polishing processing section 40 of the workpiece 4.
  • FIG. 2A is a plan view of the main part of this apparatus
  • FIG. 2B is a cross-sectional view of the main part.
  • the timepiece dial manufacturing apparatus according to the present invention includes a container (a plate 57 and a lid) provided with conducting portions 12a and 13a capable of inflowing and outflowing of a solution into the inside and a stirring member 55 capable of maintaining the stirring state of the solution. 58).
  • the container is composed of a petri dish-shaped circular dish 57 and its lid 58.
  • the dish 57 is covered with the lid 58 and can be sealed from the outside.
  • two conductive portions 12a are provided on the side surface of the plate 57, and an aqueous sodium hydrogen carbonate solution can flow into the container from one conductive portion 12a through the flow path 52.
  • the aqueous calcium chloride solution containing magnesium can also flow into the container through the inflow passage 12 from the other conducting portion 12a.
  • the aqueous solutions flowing in from the two flow paths 12 and 52 are mixed in the dish 57 to form a supersaturated aqueous solution 53 of calcium carbonate, and this supersaturated state is appropriately maintained.
  • two conductive portions 13a are provided on the side surface of the plate 57, and the aqueous solution 53 in the container can be discharged out of the container from the outflow passage 13 through the conductive portion 13a.
  • a silicon resin sheet 54 is adhered to the back surface of the lid 58, and the workpiece 4 is adhered to the sheet 54, and the back surface of the lid 58 is attached with the workpiece 4 adhered.
  • the dish 57 is covered with the inside of the container so that the work 4 is immersed in the aqueous solution 53 while isolating or sealing the inside of the container from the outside.
  • a sodium hydrogen carbonate aqueous solution and a calcium chloride aqueous solution containing magnesium are allowed to flow into the container through the conducting portion 12a at a predetermined speed, and the aqueous solution 53 is caused to flow out of the vessel via the conducting portion 13a.
  • the discharge of the aqueous solution 53 outside the container may be promoted using a pump or the like (not shown).
  • a pump or the like By appropriately maintaining the flow into and out of the container, the supersaturated state of calcium carbonate in the aqueous solution 53 can be appropriately maintained.
  • the quantity of the aqueous solution 53 required can be reduced by making the volume of a container as small as possible. Further, by sealing the container, entry of foreign matter such as dust and dust into the aqueous solution 53 can be appropriately eliminated, and the quality of the thin film 41 can be improved.
  • a magnetic rotating body 55 (stirring member) is placed on the bottom of the container, and the aqueous rotating body 53 is stirred by horizontally rotating the magnetic rotating body 55.
  • the magnetic rotator 55 can be rotated using a magnetic stirrer 59.
  • the magnetic stirrer 59 is provided with a rotating magnetic field generator 56 in a casing whose upper surface is horizontal, and this rotating magnetic field generator 56 is usually composed of a driving rotating body that includes a driving magnet and can rotate horizontally, and a motor that rotationally drives the rotating body. And can be appropriately selected depending on the implementation without particular limitation.
  • the magnetic stirrer 59 When the magnetic stirrer 59 is operated in a state of being placed on the bottom surface of the container as shown in the figure, the magnetic rotating body 55 rotates in the aqueous solution 53 at a predetermined speed, and the aqueous solution 53 can be stirred.
  • the flow of the aqueous solution 53 into and out of the container is appropriately controlled without using the magnetic stirrer 59, thereby appropriately stirring the aqueous solution 53 in the container and supersaturation of calcium carbonate. You may make it maintain and form a state.
  • an automatic stirring device such as a mechanical stirrer may be used as appropriate, and various rotating bodies for appropriately maintaining the stirring state of the aqueous solution can be used. .
  • the aqueous solution is agitated by appropriately rotating an aeration apparatus that blows in outside air or the like, or simply a rod, plate, or propeller-shaped stirrer in a container through a predetermined automatic apparatus or manual operation. You may make it do.
  • FIG. 3 is an enlarged view of an essential part schematically showing a timepiece dial manufacturing apparatus according to another embodiment (another example) of the present invention.
  • the manufacturing apparatus shown in FIG. 2 has the same basic configuration as the manufacturing apparatus shown in FIG. 2, and the container includes a circular dish 57 ′ and a lid 58 ′ that can be covered and isolated from the outside, and the side surface of the circular dish 57 ′.
  • Channels 12 'and 52' communicate with the two conducting parts 12a 'provided in the section, respectively, and an aqueous calcium chloride solution containing magnesium passes through the channel 12'.
  • a sodium aqueous solution can flow into the container, and two conductive portions 13a ′ that can flow out the aqueous solution 53 ′ in the container are provided at positions opposite to the conductive portions 12a ′.
  • the supersaturated aqueous solution 53 'of calcium carbonate is formed by mixing the aqueous solutions from the two flow paths 12' and 52 'in the dish 57'.
  • a predetermined number of workpieces 4 are arranged equally and symmetrically on the back surface (vertically below) of the lid 58 ′ via a resin sheet 54 ′, and these workpieces 4 are directly used without using an adhesive or the like. It is attached to the sheet 54 '.
  • the aqueous solution 53 ′ flows out from the conducting portion 12a ′ into the container and also from the conducting portion 13a ′.
  • the stirring state of the aqueous solution 53 ′ is maintained by the magnetic stirrer 59 ′.
  • four magnetic rotators 55 ′ (stirring members) are symmetrically arranged in the container, and the magnetic rotator 55 ′ is rotated by four corresponding rotating magnetic field generators 56 ′.
  • the container shown in FIG. 3 is larger than the container shown in FIG. 2, and can accommodate a larger number of workpieces 4 of the same size at the same time, thereby making it possible to manufacture a timepiece dial, further improving productivity. .
  • an aqueous solution in which all the surfaces of the works 4 in the container are appropriately stirred at the same time is obtained.
  • the crystal thin film 41 of the aragonite laminated structure having a substantially uniform and substantially uniform thickness is grown. Therefore, the parameters of the aqueous solution 53 and the arrangement of the workpiece 4, or The configuration and the like of the container can be appropriately selected and adjusted according to the implementation.
  • the work 4 since the work 4 is directly attached to the vertical lower surface side of the sheet 54 and the container is covered and blocked from the outside, it is formed on the surface of the work 4 in the crystal growth step 5.
  • the thin film 41 to be formed can be easily formed with a uniform and uniform thickness.
  • the organic matter in the tape may elute into the aqueous solution 53 and hinder the formation of crystals.
  • impurities in the aqueous solution 53 may be precipitated and deposited on the surface side of the workpiece 4 to form a crystal having this as a nucleus.
  • FIG. 4A is an example of a photomicrograph of the surface of the polishing processing unit 40 that has been polished to a high flatness (flatness) by polishing the workpiece material in the polishing step 3.
  • b) is an example of a micrograph of a cross-sectional view of the thin film 41 grown to an appropriate thickness through the crystal growth step 5 and the like together with the lower pearl layer (work 4).
  • the polishing processing unit 40 has a high flatness (flatness) in advance. Since the growth planes that are the starting points are uniform, they are evenly distributed on the surface, so that crystals that appear all at once are limited in their growth space even if they try to grow sideways. As a result, the station loses its destination, and as a result, it has to grow vertically, and it grows all at once while maintaining a uniformly distributed state throughout. Therefore, as shown in FIG. 5B, the thin film 41 can be beautifully grown while having a high orientation in a substantially vertical direction, and a crystal with high homogeneity can be obtained.
  • FIG. 5A shows a low flatness (flatness) through, for example, a polishing process using a rough abrasive without subjecting the workpiece material to a high-precision surface polishing process as in the polishing process 3 described above.
  • FIG. 5 (b) shows that the surface of the workpiece material shown in FIG. It is an example of the microscope picture which looked at the thin film together with the lower layer pearl layer (work).
  • FIG. 6A is an explanatory diagram outlining the effect of the thin film 41 on the reflected light.
  • the incident light A and B is transmitted through the layer made of the thin film 41, so that the reflected light coming out is surely attenuated, so that the light intensity of the reflected light is weakened.
  • the interference effect of the reflected light C is alleviated, the standout of the striped pattern is suppressed, the flatness is appropriately increased, and a modest interference color can be obtained. Therefore, it is possible to change the conventional reflected light, which has strong striking steepness of unevenness with strong light, into a reflected light that is moderately weakened and loosely suppresses unevenness of light, and has an elegant luxury feeling to the product. Can be made. Further, such an effect of reducing reflected light can be optimally set by adjusting the thickness of the thin film 41.
  • a surface treatment process 6 for polishing the surface of the thin film 41 of the workpiece 4 obtained as described above is performed as necessary.
  • the crystal growth step 5 is interrupted when the thin film 41 is grown to some extent, and in this surface treatment step 6, the surface of the thin film 41 is subjected to a treatment such as polishing or cleaning. Therefore, the flatness (flatness) is improved.
  • the crystal growth process 5 is resumed, the crystal growth is reset, and the crystal growth is resumed with the surface of the thin film 41 having high flatness (flatness) again as the starting point of the growth surface. Therefore, the crystal growth of the thin film 41 can be enhanced.
  • the surface treatment step 6 is provided as a step of rearranging the surface of the thin film 41 in an intermediate state with an auxiliary interposition between the steps in order to promote such good crystal growth. Depending on the implementation, it can be arbitrarily selected.
  • a confirmation step 7 for confirming the thin film 41 is provided.
  • a desired quality in particular, whether or not the thickness has been reached is determined, and it is determined that the quality of the thin film 41 to the workpiece 4 is good (has reached a predetermined thickness) If the process proceeds to the next step and it is determined that the quality is poor (having not reached the predetermined thickness), the process returns to the crystal growth step 5 again to restart the formation of the thin film 41.
  • necessary steps such as a step 71 for exchanging the aqueous solution 53 may be interposed. In this example, for example, when the thickness of the thin film 41 reaches about 10 ⁇ m, the process proceeds to the next finishing step 8.
  • a finishing step 8 is performed.
  • the surface of the thin film 41 on the viewing side is subjected to processing as required, such as predetermined polishing. Appropriate selections are made to enhance the decorative effect of the product or to meet the product standards.
  • this finishing step 8 for example, mirror polishing, matte finish, matte finish, etc., hard or soft looks, barrel polishing, electrolytic polishing, magnetic polishing, buffing, etc., various polishing apparatuses and polishing materials, or these In order to meet the finishing requirements as wide as possible.
  • the surface of the thin film 41 can be finished to a sufficient quality, so that the finishing step 8 can be omitted depending on the product.
  • the cutting process 9 is performed.
  • the workpiece 4 processed through the above processes is cut and formed according to a product drawing or the like.
  • CAD / CAM software and a CNC cutting machine it is possible to manufacture not only simple cutting but also, for example, a complicated guilloché dial.
  • the processing from the workpiece 4 to the timepiece dial 10 is completed.
  • the timepiece dial 10 of this example manufactured as described above has the polishing processing unit 40 subjected to surface polishing on the surface in a state of being cut and sliced from a material having a pearl layer (white butterfly shell).
  • the aragonite structure has been described as the crystal form constituting the thin film 41.
  • the crystal form of the thin film 41 is not limited to the aragonite structure, and is a crystal structure of calcium carbonate. Any other crystal form (such as calcite structure) may be used as long as it has an effect.
  • FIG. 7 is a schematic view showing an example of a front view in which the timepiece dial 10 manufactured as described above is mounted on the surface of a movement mechanism unit (not shown) of the timepiece main body 11.
  • This example shows a wristwatch, and in the state of being worn on the wrist, any incident light on the watch dial 10 is attenuated reliably and appropriately by the thin film 41 and the unevenness of the light is alleviated.
  • the conventional watch dial made of layers it is possible to always emit elegant and calm reflected light, so that it is possible to bring out an elegant and noble luxury to humans who see the watch dial 10 become.
  • the watch dial 10 product circular piece having a radius of about 1.5 cm
  • reflected light from the surface is visually compared with the work 4 before the thin film 41 is grown on the surface.
  • the light is strong and has a shiny luster
  • the color change caused by the interference color is slightly fine, and the blue system is seen from any angle.
  • the reflected light on the surface of the pearl layer can be appropriately attenuated / scattered, and thus it is possible to foster a modest and calm feeling.
  • it can be easily implemented as compared with a conventionally known method for producing a calcium carbonate thin film crystal, can be applied to a wide range of materials, and can stably produce a large amount of products, so its utility value is extremely high.
  • Example 1 in which crystal growth is performed in the present example shown in FIG. 2 will be described.
  • a circular petri dish-shaped container consisting of a lid 58 and a dish 57 having a diameter of about 120 mm and a height of about 10 mm
  • a workpiece 4 having a circular disk shape and a diameter of about 30 mm and a thickness of about 0.2 mm is prepared.
  • the aqueous solution 53 was formed by inflowing and mixing, and an experiment was performed to determine the minimum required amount of the aqueous solution 53 with this setting. As a result of operation for about 64 hours at a supply rate of the aqueous solution 53 of 5.7 ml / min for each of the two inflow passages 12a, it is confirmed that the thin film 41 having a thickness of about 15 ⁇ m is formed if the aqueous solution 53 is about 110 cc to 120 cc. From this, it was confirmed that the liquid volume was sufficient at this level.
  • the supply rate of the aqueous solution from the flow path 52 into the container should be increased in accordance with the increase (volume) of the amount of the aqueous solution 53 in the container. Then, when the workpiece 4 was attached to the 6 to 7 sheets 57, the aqueous solution 53 having a supply rate of about 6.4 ml / min and a supply amount of about 40 cc was required.
  • Embodiment 2 will be described in which the upper side of the plate 57 is opened without using the lid 58, the work 4 is attached to the sheet 54 and fixed to the plate, and two kinds of aqueous solutions are dropped.
  • the procedure of instillation is carried out on the workpiece 4 in a state where a mixed aqueous solution of calcium chloride concentration 20 mM and magnesium chloride concentration 100 mM and an aqueous solution of sodium bicarbonate concentration 20 mM are immersed in the supersaturated aqueous solution 53 at a rate of 6 ml / min. Let it drip.
  • the supersaturated aqueous solution 53 of calcium carbonate was circulated at a speed at which 55 cc was replaced in about 9 minutes by driving a drain pump (not shown) so that a new aqueous solution was always supplied.
  • crystal growth of the thin film 41 was recognized to a thickness of about 7 ⁇ m.
  • Example 3 in which crystal growth is performed in the above-described another example shown in FIG. 3 will be described.
  • the size and thickness of the work 4 used is the same as in the above case, but since a larger container is used, a larger amount of work 4 can be accommodated.
  • a 20 mM calcium chloride aqueous solution and a 100 mM magnesium chloride aqueous solution are introduced from the flow path 12 ′, and a 20 mM sodium bicarbonate aqueous solution is introduced from the flow path 52 ′ into the dish 57 ′.
  • an automatic driving apparatus / system capable of continuously producing the timepiece dial of the present invention can be configured by appropriately selecting and combining elements according to the implementation conditions.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

L'invention vise à pourvoir à un cadran pour une pièce d'horlogerie qui présente une intensité lumineuse discrète et un aspect plat, qui crée une sensation d'élégance faite de luxe et de distinction, et qui est simple à appliquer même avec des coquilles cultivées artificielles, et qui fournit par conséquent une lumière réfléchie d'une qualité au moins équivalente à celle de coquilles naturelles. L'invention vise également à pourvoir à ladite pièce d'horlogerie et à un procédé de fabrication d'un cadran pour une pièce d'horlogerie. Ce cadran pour une pièce d'horlogerie est conçu à partir d'une pièce à usiner qui inclut, dans une surface en nacre, une partie polie qui a été soumise à un polissage de surface après avoir été découpée dans un matériau comprenant ladite nacre et tranchée, des films minces incluant un cristal de carbonate de calcium croissant jusqu'à une épaisseur imposée dans une direction sensiblement verticale à partir de la partie polie étant formés dans la pièce à usiner.
PCT/JP2017/038526 2016-11-09 2017-10-25 Cadran pour pièce d'horlogerie, pièce d'horlogerie, et procédé de fabrication d'un cadran pour pièce d'horlogerie Ceased WO2018088217A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230229116A1 (en) * 2020-06-11 2023-07-20 Dayton Technologies Limited Display devices and electronic apparatuses comprising same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6251289U (fr) * 1985-09-20 1987-03-30
JPH04131300A (ja) * 1990-09-22 1992-05-01 Senichi Masuda 装飾品の製造方法とその装飾品
JPH08252106A (ja) * 1995-03-16 1996-10-01 Iba Kogyo Kk 貝殻製品およびその製造方法
JP2008128914A (ja) * 2006-11-22 2008-06-05 Citizen Holdings Co Ltd 機器類の表示板および機器類の表示板の製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6251289U (fr) * 1985-09-20 1987-03-30
JPH04131300A (ja) * 1990-09-22 1992-05-01 Senichi Masuda 装飾品の製造方法とその装飾品
JPH08252106A (ja) * 1995-03-16 1996-10-01 Iba Kogyo Kk 貝殻製品およびその製造方法
JP2008128914A (ja) * 2006-11-22 2008-06-05 Citizen Holdings Co Ltd 機器類の表示板および機器類の表示板の製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230229116A1 (en) * 2020-06-11 2023-07-20 Dayton Technologies Limited Display devices and electronic apparatuses comprising same

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