JP2004216319A - Method for manufacturing dial of clocking device, dial of clocking device and clocking device equipped with dial - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a dial of a clocking device, by which a thick resin film can be formed on the surface of a dial by using a liquefied resin efficiently and to provide the dial of the clocking device and the clocking device equipped with the dial. <P>SOLUTION: This method comprises a substrate forming step to form a plurality of substrates 23 by cutting a planar strip-like member 31 having a plurality of dials 29 on the surface according to the size of each of the dials 29, a liquefied resin coating step to coat the surface of the substrate 23 with the liquefied resin 4 by dripping the resin 4 on the surface of the substrate 23 almost in the center and spreading the dripped resin 4 by the centrifugal force while rotating the rear side-adsorbed substrate 23 and a resin film forming step to form the resin film 33 consisting of the cured resin 4 on the surface of the substrate 23. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for manufacturing a dial for a timepiece having a resin film formed on a surface thereof, a dial for a timepiece, and a timepiece having the dial.
[0002]
[Prior art]
2. Description of the Related Art In recent years, in a timing device such as a wristwatch, a large number of varieties are manufactured in small quantities with added value, rather than a large number of small varieties. In particular, a timekeeping device such as a wristwatch has a function as a decorative article in addition to a function to check the time. Hereinafter, a wristwatch will be described as an example of the timing device. Watches are often worn and carried, and the aesthetic appearance of the dial is important. Therefore, a transparent resin film is formed on a dial of a conventional wristwatch (for example, see Patent Document 1).
[0003]
In a conventional wristwatch, for example, a transparent resin film is formed on the surface of a dial formed of a base material provided with a pattern or the like or a base material subjected only to plating or printing, for example, as an external element of a dial plate in an exterior component. Is formed. Further, a general lapping process may be applied to the surface of the transparent resin film. In addition, there is a resin film which is made to have a glossiness and a depth visually by giving the resin film as it is instead of performing such a lapping process, thereby giving a sense of quality. As described above, in order to give the resin layer a glossiness and a high-grade feeling, it is necessary to form a very thick resin film of about 50 μm to 200 μm. The resin film is characterized in that the thicker the resin film, the greater the depth and transparency of the pattern of the underlying layer of the dial can be obtained.
[0004]
Conventionally, as a method of forming a resin film on the surface of a decorative member such as a dial, for example, there have been a spray method, a roll coat method, a die coat method, a curtain coat method, and a dipping method. Of these methods, the spray method has often been adopted because a large number of dials can be simultaneously coated. This spray method is a method of spraying a mist resin as a paint by using a spray gun for painting having a function of supplying and stopping paint or resin to a nozzle, keeping a certain distance from a member to be painted. .
[0005]
In the spray method, it is common to apply a coating spray gun from above, in which a large number of members to be coated are arranged, and the thickness of the resin film that can be applied at one time is about 10 μm to 30 μm. is there. However, this spray method has a disadvantage that the paint is wasted by being sprayed in a mist state. Further, in the spray method, since a small-diameter nozzle is used, it is necessary to make the resin low in viscosity.
[0006]
[Patent Document 1]
JP 2001-13267 A (FIG. 1)
[0007]
[Problems to be solved by the invention]
However, the method of forming the resin film on the dial using the spray method has problems in processing time and quality. Specifically, in the spray processing, the film thickness that can be formed at a time is as thin as about 10 μm to 30 μm, and in order to increase the film thickness, the spray processing has to be performed several times. When spray processing is performed several times in this way, the processing time is long, and there has been a problem that the manufacturing efficiency is poor. In particular, when the resin used in the spray processing is, for example, a thermosetting resin, the drying time must be taken into consideration, so that it was not possible to avoid an increase in the processing time. Further, even if other methods such as a roll coating method are employed, it is difficult to form a thick resin film because the paint must be diluted. Further, when such other methods are adopted, there is a problem in quality such as a temporal change of the paint due to an environment such as a temperature change.
[0008]
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, to provide a method for manufacturing a dial for a timepiece capable of forming a thick resin film on the surface of the dial by efficiently using a liquid resin without waste, and a timepiece. It is an object of the present invention to provide a dial plate for use and a timing device provided with the dial plate.
[0009]
[Means for Solving the Problems]
The method for manufacturing a dial according to the present invention includes a base member forming step of forming a plurality of base members by dividing a flat strip member on which a plurality of dials are to be formed according to the size of the dial. While adsorbing and rotating the back surface of the base material, a liquid resin is dropped almost at the center of the surface of the base material, and the liquid resin is spread by centrifugal force. A liquid resin coating step of coating; and a resin film forming step of forming a resin film made of the cured liquid resin on the surface of the base material. According to the above configuration, it is possible to form a thick resin film on the surface of the base material as compared with a conventional case in which a film is formed on a dial by a spray method. Moreover, this resin film does not need to be formed on the surfaces of a plurality of base materials obtained from the strip members, and can be formed on the surfaces of the respective base materials. For this reason, such a manufacturing method is suitable for manufacturing a small number of varieties of dials. In addition, in order to form a resin film, an appropriate amount of liquid resin may be dropped according to the film thickness, and since excess liquid resin is not scattered, the amount of liquid resin used is minimized, and manufacturing costs are reduced. Can be lowered.
[0010]
In the above configuration, it is preferable that the method further includes a planarization step of polishing the resin film to planarize a surface of the resin film.
According to the above configuration, since the resin film formed on the surface of the base material can have a constant thickness, the appearance of the dial having the resin film is improved, and the added value can be increased.
[0011]
In the above configuration, it is preferable that the method further includes a typesetting step of performing typesetting on the surface of the flattened resin film.
According to the above configuration, since the resin film formed on the base material is flat, it is easy to perform typesetting, and it is possible to easily manufacture a dial with the typesetting.
[0012]
In the above configuration, it is preferable that the base material has an uneven shape.
According to the above configuration, since the liquid resin is dropped on the surface of the substrate having the uneven shape to form the thick resin film, the uneven shape can be recognized by the tactile sensation of the resin film.
[0013]
In the above configuration, the liquid resin is desirably transparent.
According to the above configuration, a transparent resin film can be formed on the surface of the base material, so that the appearance of the base material surface can be improved and the added value can be increased.
[0014]
In the above configuration, the liquid resin is desirably colored.
According to the above configuration, a colored, transparent and thick resin film can be formed on the surface of the substrate, so that the surface of the substrate has an aesthetic appearance and the added value can be further increased.
[0015]
The dial for a timepiece of the present invention is a base member forming step of forming a plurality of base members by dividing a flat strip member on which a plurality of dials are to be formed according to the size of the dial. While adsorbing and rotating the back surface of the base material, a liquid resin is dropped almost at the center of the surface of the base material, and the liquid resin is spread by centrifugal force. It is manufactured by a method of manufacturing a dial including a liquid resin coating step of coating and a resin film forming step of forming a resin film made of the cured liquid resin on the surface of the base material.
According to the above configuration, it is possible to form a thick resin film on the surface of the base material as compared with a conventional case in which a film is formed on a dial by a spray method. Moreover, this resin film does not need to be formed on the surfaces of a plurality of base materials obtained from the strip members, and can be formed on the surfaces of the respective base materials. For this reason, such a manufacturing method is suitable for manufacturing a small number of varieties of dials. In addition, in order to form a resin film, an appropriate amount of liquid resin may be dropped according to the film thickness, and since excess liquid resin is not scattered, the amount of liquid resin used is minimized, and manufacturing costs are reduced. Can be lowered. Therefore, the timepiece dial is improved in aesthetic appearance and added value.
[0016]
The timepiece provided with the dial of the present invention is a base member forming step of forming a plurality of base members by dividing a flat strip member on which a plurality of dials are to be formed according to the size of the dial. And, while adsorbing and rotating the back surface of the base material, a liquid resin is dropped almost at the center of the surface of the base material, and the liquid resin is spread by centrifugal force, whereby the liquid resin is applied to the surface of the base material. And a resin film forming step of forming a cured resin film of the liquid resin on the surface of the base material. It is a timing device.
According to the above configuration, it is possible to form a thick resin film on the surface of the base material as compared with a conventional case in which a film is formed on a dial by a spray method. Moreover, this resin film does not need to be formed on the surfaces of a plurality of base materials obtained from the strip members, and can be formed on the surfaces of the respective base materials. For this reason, such a manufacturing method is suitable for manufacturing a small number of varieties of dials. In addition, in order to form a resin film, an appropriate amount of liquid resin may be dropped according to the film thickness, and since excess liquid resin is not scattered, the amount of liquid resin used is minimized, and manufacturing costs are reduced. Can be lowered. Therefore, the timekeeping device has an improved appearance and added value.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing a configuration example of a spin coater 1 using a method for manufacturing a dial for a timepiece as a preferred embodiment of the present invention.
The spin coater 1 has a rotating jig 11, a motor 15, a control unit 19, a vacuum generation unit 17, and a liquid resin supply unit 16. In the spin coater 1, an upper portion of a housing 21 is covered with a cover 9, and the liquid resin 4 is fixed to a fixed base material 23 by an arm support 7 extending to the upper portion of the housing 21 and a dispenser 3 fixed to the arm 5. (Substrate).
[0018]
The control unit 19 is connected to the motor 15, the vacuum generation unit 17, and the liquid resin supply unit 16, and controls these. The motor 15 has the rotating jig 11 fixed to its rotating shaft, and can rotate the fixed substrate 23 arranged on the rotating jig 11 in the R direction. Further, the rotating jig 11 includes a suction unit 13 connected to the vacuum generating unit 17. The suction part 13 has a function of sucking the fixed base material 23 arranged on the rotating jig 11. The vacuum generation unit 17 has a function of generating a vacuum and causing the suction unit 13 to suck the fixed base material 23.
[0019]
Further, the liquid resin supply unit 16 is connected to the dispenser 3 via the arm support unit 7 and the arm 5. The liquid resin supply unit 16 has a function of supplying the liquid resin 4 dropped from the dispenser 3. The liquid resin 4 is made of, for example, polypropylene, ABS resin (copolymer containing [A: acrylonitrile, B: butadiene, S: styrene]), a thermoplastic resin such as acrylic, or a thermosetting resin such as melamine or phenol. Resin. The liquid resin may be UV (Ultra Violet rays), EB (Electronic Beam), or a curable resin. The liquid resin 4 is a resin having a viscosity of, for example, 0.5 Pa · S to 1.2 Pa · S.
[0020]
The material of the fixed substrate 23 is, for example, a metal, an alloy, an intermetallic compound, an inorganic compound, a plastic, a ceramic, or the like. In addition, the fixed substrate 23 may have various films formed on the surface, or may have been subjected to surface modification. In addition, it is desirable that the rotating jig 11 rotates the fixed substrate 23 within a range of, for example, about 300 to 800 RPM. The dispenser 3 has a configuration in which the liquid resin 4 is dripped from the vicinity of the center on the rotating fixed-form base material 23 and the liquid resin 4 is spread on the surface of the fixed-form member 23 by centrifugal force.
[0021]
FIG. 2 is a plan view showing an example of the configuration of the fixed substrate 23 of FIG.
The fixed substrate 23 has a substantially rectangular shape, and pilot holes 25 are provided at two corners. The pilot hole 25 has a function as a processing position reference in a pre-process and a post-process. A dial 29 is fixed to the center of the fixed base member 23 by supporting portions 27a, 27b, 27c, and 27d. These support portions 27a and the like are portions that are cut off when the dial 29 is formed as a single piece as shown in FIG. The dial 29 is a member applied to, for example, a dial of a wristwatch. A resin film is formed on the surface of the dial 29 as described later.
[0022]
The resin film formed on the dial 29 is, for example, transparent. With such a configuration, a thick resin film having a sense of transparency can be formed on the surface of the fixed base material 23, so that the surface of the fixed base material 23 has an aesthetic appearance, and the added value can be increased. Needless to say, the resin film may be colored and transparent. With this configuration, a colored and transparent resin film can be formed on the surface of the fixed-form base material 23, so that the surface of the fixed-form base material 23 has an aesthetic appearance, thereby further increasing the added value. Can be.
[0023]
The configuration of the spin coater 1 and the like is as described above. Next, an example of the operation will be described with reference to FIGS.
FIG. 4 is a plan view showing an example of a procedure of a method of manufacturing a dial as a preferred embodiment of the present invention. FIG. 5 is an example of a procedure of a method of manufacturing a dial as a preferred embodiment of the present invention. FIG.
FIG. 6 is a plan view showing a configuration example of the completed dial 29.
[0024]
<Base material forming step>
In this base material forming step, a plurality of base materials are formed by dividing a flat strip member on which a plurality of dials are to be formed according to the size of the dial. Specifically, first, in this base material forming step, a brass material 31 shown in FIG. 4A is prepared. It goes without saying that the brass material 31 may be replaced by a brass material.
[0025]
The brass material 31 is a flat strip member on which a plurality of dials 29 are to be formed, and is made of, for example, metal. The brass material 31 is a member that can form, for example, ten dials when divided. Further, as shown in FIG. 4B, a pilot hole 25 is formed in the brass material 31 so as to correspond to, for example, ten dials. The pilot holes 25 are formed by pressing, for example, two pieces per one dial 29.
[0026]
The brass material 31 shown in FIG. 4C is formed, for example, by cutting to form the dial 29. The dial 29 is supported on the brass material 31 by a support portion 27a or the like. Then, the surface of the brass material 31 on which the dial 29 is formed is subjected to wrapping 37 such as plating to prevent rust, for example. Further, the brass material 31 on which the plurality of dials 29 are formed is separated into the respective standard substrates 23 according to the size of the dial to be manufactured, as shown in FIG. It is to be noted that the fixed base material 23 has not been coated yet, and is characterized in that the coating order is different from that in the related art where the coating is performed at the time of separation.
[0027]
<Liquid resin coating step>
In the liquid resin coating step, the liquid resin is dropped on almost the center of the surface of the base material while adsorbing and rotating the back surface of the base material, and the liquid resin is spread on the surface of the base material by spreading the liquid resin by centrifugal force. Let it. Specifically, first, the fixed base material 23 shown in FIG. 2 is arranged on the rotating jig 11 in FIG. The rotary jig 11 is provided with a suction unit 13. The suction unit 13 suctions the fixed base material 23 arranged on the rotating jig 11.
[0028]
The rotating jig 11 is configured to rotate the fixed base material 23 in the R direction by the operation of the motor 15 under the control of the control unit 19. The rotation jig 11 rotates at a rotation speed of, for example, 300 to 800 RPM. Further, a dispenser 3 is provided above the fixed base material 23 that rotates at such a rotational speed, and the dispenser 3 is configured to drop the liquid resin 4 almost at the center of the fixed base material 23. I have. The amount of the drop is preferably about 0.5 to 2.0 g.
[0029]
As described above, the liquid resin 4 has a viscosity of, for example, 0.5 Pa · S to 1.2 Pa · S, and preferably about 0.5 Pa · S. Therefore, the liquid resin 4 dropped by the dispenser 3 spreads from the central portion to the outer peripheral portion of the shaped substrate 23 due to the centrifugal force generated by the rotation of the shaped substrate 23. Therefore, the surface of the fixed substrate 23 is uniformly covered with the liquid resin 4.
[0030]
Here, when the above specific numerical values are adopted, when the drop amount is 0.5 g, 1.0 g, and 2.0 g like the film thickness with respect to the rotation speed of the sample shown in FIG. And the film thickness is in the range of about 50 μm to 200 μm, which is an appropriate film thickness. Further, when the above specific numerical values are adopted, when the rotation speed is 350 RPM and the drop amount is 0.5 g as in the film thickness with respect to the rotation time shown in FIG. 8, the film thickness is almost independent of the rotation time. The thickness is 50 μm to 80 μm, and an appropriate film thickness is obtained.
[0031]
The spin coater 1 in FIG. 1 can form a thick resin film on the surface of the fixed base material 23 on which the liquid resin 4 is dropped by employing the liquid resin 4 and the rotation speed under such conditions. Moreover, since the liquid resin 4 adopts the above-described conditions, the liquid resin 4 has a uniform thickness, and the dropped liquid resin does not go around the back surface of the fixed base material 23, and a thick resin film is formed on the surface. Can be formed.
[0032]
Further, the fixed base material 23 does not deform when forming the resin film because the end portion thereof is not fixed and the back surface thereof is fixed by the suction portion 13, so that the resin film has an accurate thickness. Can be formed. Here, the thickness of the resin film formed on the fixed substrate 23 can be, for example, 50 μm to 200 μm. That is, a resin film thicker than the conventional one can be formed on the fixed base material 23. In addition, since this resin film is transparent, for example, it is possible to obtain a depth and transparency to the underlying pattern.
[0033]
More specifically, as shown in FIG. 1, the fixed base material 23 disposed on the rotary jig 11 shown in FIG. 1 is, for example, plated and wrapped as shown in FIG. It is a member of. Then, by spreading the liquid resin 4 dropped onto the rotating base material 23, a thick resin film 33 is formed on the surface of the base material 23 as shown in FIG. 5B. The resin film 33 has a structure in which the center is slightly recessed due to centrifugal force and becomes slightly thicker toward the outer periphery. In FIG. 5B, the thickness of the resin film 33 is slightly emphasized.
[0034]
<Resin film forming step>
In the resin film forming step, a resin film made of a cured liquid resin is formed on the surface of the base material. Specifically, the resin film 33 made of the liquid resin 4 shown in FIG. 5B is cured by, for example, heating, and the resin film 33 is formed on the surface of the fixed base material 23. Here, it is preferable to perform a polishing process (a flattening step) in order to further uniform the thickness of the resin film 33 having a somewhat different thickness. In this polishing process, the surface of the resin film 33 can be flattened by polishing the resin film 33, and the typesetting described later can be easily performed.
[0035]
Next, as shown in FIG. 5C, typesetting 35 is performed on the surface of the flattened resin film 33. Since the resin film 33 is polished as described above and the resin film 33 is flat, the typesetting 35 can be easily performed. In the fixed-form base material 23 on which the typesetting 35 is performed in this manner, the support portions 27a and the like shown in FIG. 2 are cut off, and the dial 29 shown in FIG. 9 is completed. The dial 29 is a typical example of a flat plate.
[0036]
The method for manufacturing a dial as described above can also be applied to a dial having the following shape.
FIG. 9 is a cross-sectional view illustrating an example of a method of manufacturing a dial in the case where the fixed base material 23 includes an uneven shape, and FIG. 10 is a plan view illustrating a configuration example of the uneven dial 29. is there.
[0037]
In the shaped base material 23 having such a shape, the liquid resin 4 is dropped on the surface of the shaped base material 23 shown in FIG. 9A as shown in FIG. The liquid resin 4 spreads over the entire surface as shown in FIG. 9B by the centrifugal force caused by the rotation. The resin film 33 can be planarized by hardening and polishing the liquid resin in the same manner. Next, as shown in FIG. 9C, typesetting 35 is performed on the surface of the flattened resin film 33. Thus, the dial 29 having the concavo-convex shape shown in FIG. 10 is completed.
[0038]
In addition, the above-described method for manufacturing a dial can be applied to the fixed base material 23 that has been typeset earlier. Specifically, as shown in FIG. 11A, the typesetting 35 is first performed on the surface of the fixed base material 23 via a wrapping 37 such as plating. Next, as shown in FIG. 11B, the liquid resin 4 is dropped on the fixed base material 23 on which the typesetting 35 has been performed, as shown in FIG. The liquid resin 4 is configured to cover the surface of the fixed base material 23 including the typesetting 35 as shown in FIG. 11B as described above. Since the liquid resin 4 has a surface tension, it spreads evenly to the outermost measurement surface of the typesetting 35. In this way, the dial 29 having the typesetting 35 as shown in FIG. 12 is completed.
[0039]
According to the embodiment of the present invention, a thick and uniform resin film can be formed on the surface of the timepiece dial plate 29. The thickness of the resin film formed on the surface of the dial 29 can be arbitrarily set according to the amount of the liquid resin 4 to be dropped and the number of rotations of the rotating jig 11. Therefore, by setting the viscosity of the liquid resin 4 and the number of rotations of the rotary jig 11 in accordance with the thickness of the resin film to be formed, the resin film 33 having a desired thickness can be formed on the dial 29. it can.
[0040]
Further, according to such a method of manufacturing a dial, the thickness of the resin film 33 can be increased as compared with a conventional method of forming a resin film. When such a thick resin film can be formed, the dial plate 29 can obtain the depth and transparency of the pattern of the underlying layer. Therefore, such a dial 29 can provide an aesthetic appearance as an added value, and the timepiece having the dial 29 can have an added value.
[0041]
The resin film 33 is not formed by repeatedly forming a film as in the related art, but can be realized by one processing. Therefore, according to such a method of manufacturing a dial, a drastic reduction in processing time can be realized at low cost.
In addition, in this dial manufacturing method, since it is not necessary to process the brass material 31 by simultaneously forming a plurality of dials 29, it is possible to form a film on each dial 29. Therefore, even when the dial 29 has a wide variety of products, different dials can be formed on each dial 29. Therefore, according to such a method of manufacturing a dial, it is possible to cope with high-mix low-volume production.
[0042]
Further, according to the embodiment of the present invention, since the viscosity of the liquid resin 4 can be made higher than in the past, the liquid resin 4 slowly spreads over the surface of the fixed base material 23 by centrifugal force. The resin film 33 can be formed even when a complicated pattern peculiar to the decorative member has a step. Furthermore, according to the embodiment of the present invention, when the amount of the liquid resin 4 is selected according to the thickness of the resin film 33 to be formed, compared with the case where the liquid resin is applied by the spray method as in the related art, the liquid resin 4 is not wasted, and the amount of liquid resin 4 used can be minimized. Therefore, according to the embodiment of the present invention, the manufacturing cost when manufacturing the dial 29 can be reduced.
[0043]
<Application example>
FIG. 13A is a plan view illustrating an example of a decorative component in which the resin film 54 is formed by applying the above-described method of forming a resin film, and FIG. FIG. 6 is a cross-sectional view illustrating a configuration example when the pendant for use 50 is cut along BB ′.
In the decorative pendant 50 of FIG. 13A, the periphery of the main body 51 is covered with a resin film 54 with a constant thickness. The composition of the resin film 54 is the same as that of the resin film 33. Since the decorative pendant 50 is used for decoration, it is desirable to produce a visual aesthetic, and the resin film 54 desirably has a certain thickness or more. Therefore, by adapting the method for forming the resin film 54 to such a decorative pendant 50, as shown in FIG. 13B, the resin film 54 having a certain thickness or more can be formed. Is desirable.
[0044]
The resin film 54 can be formed on the decorative pendant 50 by the spin coater 1 shown in FIG. The viscosity of the liquid resin 4 dropped in the spin coater 1 is preferably, for example, 1.0 Pa · S. In addition, it is desirable that the rotating jig 11 arranges, for example, a decoration pendant 50 in place of the fixed base material 23 and rotates the decoration pendant 50 at, for example, 400 RPM. Here, as the liquid resin 4, for example, a transparent color ultraviolet curable resin can be adopted.
[0045]
The dispenser 3 shown in FIG. 1 continuously drops, for example, 1.0 ml of the liquid resin 4 at a speed of 1.0 ml / S from a position about 20 mm above the rotary jig 11. Then, in the spin coater 1, the drive of the motor 15 is stopped and the rotation of the rotary jig 11 is stopped in a state where the liquid resin 4 has uniformly spread over the surface of the decoration pendant 50.
[0046]
Since the liquid resin 4 dropped onto the decorative pendant 50 is, for example, an ultraviolet-curable resin, it is approximately 600 mj / cm using an ultraviolet irradiation device such as a high-pressure mercury lamp. ² Curing is performed by giving an irradiation amount of ultraviolet rays. At this time, the thickness of the resin film formed on the decorative pendant 50 is about 200 μm. In the decorative pendant 50 on which the resin film 54 is formed, the surface of the resin film 54 is wrapped, and flatness and glossiness can be obtained. With the decorative pendant 50 having such a configuration, the decorative base can be visually recognized, and the depth can be increased, thereby visually giving a sense of quality.
[0047]
The present invention is not limited to the above embodiment, and various changes can be made without departing from the scope of the claims. For example, each configuration of the above embodiment can be partially omitted or arbitrarily combined as different from the above.
In the above embodiment, a dial or a pendant in a timepiece such as a wristwatch has been exemplified as an example of a decorative member for forming a film.However, the present invention is not limited to this. Needless to say, it is good.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration example of a spin coater using a method for manufacturing a dial.
FIG. 2 is a plan view showing an example of the configuration of the fixed substrate of FIG.
FIG. 3 is a plan view showing a configuration example of the dial of FIG. 2;
FIG. 4 is a plan view showing an example of the procedure of the dial manufacturing method.
FIG. 5 is a sectional view showing an example of a procedure of a method of manufacturing a dial.
FIG. 6 is a plan view showing a configuration example of a completed dial.
FIG. 7 is a diagram illustrating an example of a relationship between a rotation speed and a film thickness.
FIG. 8 is a diagram showing an example of a relationship between rotation time and film thickness.
FIG. 9 is a cross-sectional view showing an example of a procedure for forming a film on a fixed substrate.
FIG. 10 is a plan view showing an example of a completed dial.
FIG. 11 is a cross-sectional view showing an example of a state in which a resin film is first formed after typesetting.
FIG. 12 is a plan view showing a configuration example in which a dial is completed.
FIG. 13 is a diagram showing a configuration example of a decorative pendant.
[Explanation of symbols]
Reference Signs List 1 spin coater, 4 liquid resin, 23 fixed base material (base material), 29 dial (timer dial), 31 brass material (strip member), 33 resin film, 54 resin film

Claims (8)

A base material forming step of forming a plurality of base materials by dividing a flat strip member on which a plurality of dials are to be formed according to the size of the dial,
While adsorbing and rotating the back surface of the base material, the liquid resin is dropped on almost the center of the surface of the base material, and the liquid resin is spread by centrifugal force, thereby covering the surface of the base material with the liquid resin. A liquid resin coating step to be performed,
A resin film forming step of forming a resin film made of the cured liquid resin on the surface of the base material. 2. The method according to claim 1, further comprising a flattening step of polishing the resin film to flatten a surface of the resin film. The method according to claim 2, further comprising a typesetting step of performing typesetting on the surface of the flattened resin film. The method according to claim 1, wherein the base material has an uneven shape. The method for manufacturing a dial according to claim 1, wherein the liquid resin is transparent. The method for manufacturing a dial according to claim 5, wherein the liquid resin is colored. A base material forming step of forming a plurality of base materials by dividing a flat strip member on which a plurality of dials are to be formed according to the size of the dial,
While adsorbing and rotating the back surface of the base material, the liquid resin is dropped on almost the center of the surface of the base material, and the liquid resin is spread by centrifugal force, thereby covering the surface of the base material with the liquid resin. A liquid resin coating step to be performed,
A resin film forming step of forming a cured resin film of the liquid resin on the surface of the base material, the dial for a timepiece being manufactured by a method of manufacturing a dial. A base material forming step of forming a plurality of base materials by dividing a flat strip member on which a plurality of dials are to be formed according to the size of the dial,
While adsorbing and rotating the back surface of the base material, the liquid resin is dropped on almost the center of the surface of the base material, and the liquid resin is spread by centrifugal force, thereby covering the surface of the base material with the liquid resin. A liquid resin coating step to be performed,
A resin film forming step of forming a resin film made of the cured liquid resin on the surface of the base material.

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