WO2022029963A1

WO2022029963A1 - Method for manufacturing jewelry, and jewelry

Info

Publication number: WO2022029963A1
Application number: PCT/JP2020/030237
Authority: WO
Inventors: 秀位土橋
Original assignee: 株式会社クロスフォー
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2022-02-10

Abstract

According to the present invention, in a jewel heating step (ST2), a raw stone 11 (jewel) to be embedded in a wax mold 51 is heated. In a jewel arrangement step (ST3), a planned embedding position 61 in the wax mold 51 obtained in step ST1 is melted by the heat from the raw stone 11, and the raw stone 11 is arranged in the planned embedding position 61 in the melted state. Next, a mold fabrication step (ST4) is performed using the wax mold 51 provided with the raw stone 11, and then a casting step (ST5) is performed.

Description

How to make jewelry and jewelry

This disclosure relates to an accessory manufacturing method and an accessory.

Accessories such as rings may be manufactured by the so-called lost wax method. When the fitting is manufactured by the lost wax method, the manufacturing process includes, for example, a prototype manufacturing process, a rubber mold manufacturing process, a wax mold manufacturing process, a mold manufacturing process, a casting process, and a finishing process. By going through these steps, the jewelry is manufactured as intended.

Jewels may be fastened to the jewelry. Jewelery-fastened jewelery is typically fastened after casting, for example, when jewelery is fastened to a jewelery obtained by the lost wax method. In addition, a method has been proposed in which a jewel is fastened to a wax mold and then cast. Hereinafter, in the present disclosure, a method of fastening a jewel or the like by casting after fastening the jewel or the like to a wax mold may be referred to as "wax fastening".

Japanese Unexamined Patent Publication No. 56-109609 Japanese Unexamined Patent Publication No. 10-005021

For example, when fastening gemstones, the traditional method of fastening gemstones with waxing may cause the position of the gemstone to move when it is cast, and the gemstone may not be sufficiently fixed after casting. There is a request for further improvement.

An object of the present disclosure is to provide a method for manufacturing an accessory and an accessory that can easily determine the position where the jewel is fastened and can easily fix the jewel.

The disclosure includes the following aspects:
In the first aspect of the present disclosure, a first step of making a wax mold, a second step of heating a jewel, and the wax mold made in the first step are heated in the second step. A third step of burying a part of the jewel to make a jeweled wax mold, and a fourth step of making a jeweled mold using the jeweled wax mold made in the third step. This is a method for manufacturing a batter, which comprises a fifth step of making a jeweled trinket main body by casting using the gem-attached mold produced in the fourth step.

Preferably, the third step of the first aspect of the present disclosure is when the gem heated in the second step reaches a temperature within 20% of the melting point temperature of the wax mold. A part of the jewel is buried in the wax mold.

Preferably, in the second step of the first aspect of the present disclosure, heating is performed from the side of the gemstone buried in the wax mold.

Preferably, the first step of the first aspect of the present disclosure is defined by a substantially circular embankment and a recess formed inside the embankment to bury the gem. The wax mold having the planned burial position is produced, and in the third step, a part of the gemstone is embedded in the recessed portion of the wax mold.

Preferably, the first step of the first aspect of the present disclosure has a wax mold hole penetrating the wax mold, and the maximum diameter of the wax mold hole is smaller than the maximum diameter of the gem. In the third step, a part of the gemstone is embedded in the wax mold hole of the wax mold.

Preferably, in the first aspect of the present disclosure, the gem is a cut gem, and the third step is the girdle of the girdle, a part of the crown around the girdle, and the pavilion around the girdle. A part of the part is buried in the wax mold.

[Correction under Rule 91 17.08.2020]
Preferably, in the third step of the first aspect of the present disclosure, the wax material extends along the surface of the gemstone by the embedding around the position where a part of the gemstone of the wax mold is embedded. A part of the gemstone is embedded in the wax mold so that the stretched portion is formed, and in the fifth step, the gemstone has a shape corresponding to the stretched portion and is in contact with the surface of the gemstone by the casting. The jeweled accessory body provided with the raised portion is manufactured.

Preferably, the gemstone of the first aspect of the present disclosure is at least one selected from the group consisting of rough diamond, rough sapphire, and rough ruby.

Preferably, the accessory according to the first aspect of the present disclosure is a ring.

A second aspect of the present disclosure is an accessory comprising a jewel and an accessory body having a surface on which the jewel is placed and a portion of the jewel embedded in the surface on which the jewel is arranged. be.

Preferably, the accessory body of the first aspect of the present disclosure is provided with a raised portion in contact with the surface of the jewel.

Preferably, the accessory body of the first aspect of the present disclosure has an accessory hole penetrating the accessory body, and the maximum diameter of the accessory hole is smaller than the maximum diameter of the jewel, and the accessory hole is preferable. A part of the jewel is buried in the jewel.

According to the present disclosure, it is possible to provide a method for manufacturing an accessory and an accessory that can easily determine the position where the jewel is fastened and can easily fix the jewel.

It is a perspective view which shows the 1st Embodiment of the accessory of this disclosure schematically. It is a front view schematically showing the 1st Embodiment of the accessory of this disclosure. It is a side view schematically showing the 1st Embodiment of the accessory of this disclosure. It is a flowchart for demonstrating the manufacturing method of the ring of embodiment of this disclosure. It is a perspective view which shows typically an example of the wax mold applied to 1st Embodiment of the manufacturing method of this disclosure. It is a perspective view schematically showing an example of the wax type applied to 1st Embodiment of the manufacturing method of this disclosure. It is a process drawing which shows the 1st Embodiment of the manufacturing method of this disclosure schematically. It is a process drawing which shows the 1st Embodiment of the manufacturing method of this disclosure schematically. It is a perspective view which shows typically the 2nd Embodiment of the accessory of this disclosure. It is a perspective view schematically showing an example of the wax type applied to the 2nd Embodiment of the manufacturing method of this disclosure. It is a perspective view schematically showing an example of the wax type applied to the 2nd Embodiment of the manufacturing method of this disclosure. It is a perspective view which shows typically the 3rd Embodiment of the accessory of this disclosure. It is a perspective view schematically showing an example of the wax type applied to the 3rd Embodiment of the manufacturing method of this disclosure. It is a perspective view schematically showing the 4th Embodiment of the accessory of this disclosure. It is a perspective view schematically showing the 4th Embodiment of the accessory of this disclosure.

Jewels may be attached to jewelry such as rings. For example, when the jewelry to which the jewel is fastened is manufactured by the lost wax method, the target metal jewelry body (or the ring part if the jewelry is a ring) is manufactured, and then a tool such as a chisel is used. , A part for fastening a jewel such as a claw is formed, and the jewel is fastened by this portion. When the jewel is fastened by this method, the jewelery may not be beautiful in appearance because the claws for fastening the jewels become large and the processing marks by the tool are left around the claws. In particular, when fixing irregularly shaped gemstones such as gemstones, it is difficult to make the appearance beautiful because the dimensions and shapes of the nails are irregular according to the shape of the irregularly shaped gemstones. In addition, skill is required to keep the jewels beautiful.

On the other hand, a method of fastening jewels by wax fastening is known. For example, in Patent Document 1, a wax mold having a groove or the like is created, a jewel is fitted into the groove or the like of the wax mold, and then metal is cast into a mold in which the wax disappears and becomes hollow. So, how to fasten the stone is disclosed. Patent Document 2 describes a method of fastening a jewel by fitting a decorative part such as a jewel into a rubber mold, creating a wax mold, and then casting a metal having a temperature lower than the melting point of the decorative part. Has been done.

However, when the jewel is fastened by the methods disclosed in Patent Document 1 and Patent Document 2, the jewel is simply fitted into the wax mold without melting the wax mold. For this reason, when a jewel cut into a specific shape such as a diamond is fastened by the methods disclosed therein, the jewel may be damaged, and it is difficult to fasten the jewel and manufacture an accessory. This is considered to be a phenomenon that occurs when a gap or the like may occur between the wax mold and the gemstone, and stress concentration occurs on the gemstone due to shrinkage when the cast metal is cooled. Even if the gem is not damaged, phenomena such as the gem moving when it is cast and the gem being overfilled occur, and there is room for further improvement in order to fasten the gem to the jewelry body. rice field.

This tendency was remarkable especially when irregularly shaped gems (for example, gemstones) were fastened as gems. For example, when using rough diamonds, phenomena such as the movement of gems when making or casting molds and the overfilling of gems when casting occur, and the gems to be fastened to the jewelry body. It was difficult to determine the arrangement of. In addition, it was difficult to fix the rough diamond to the main body of the accessory because the contact point between the rough diamond and the wax mold was reduced.

From the above, when manufacturing jewelry with irregularly shaped jewels, there was room for further improvement regarding the position where the jewels were fastened and the fixing of the jewels.

On the other hand, according to the method for manufacturing jewelry of the present disclosure, the jewel is heated and then placed in a wax mold. At this time, the wax material in the portion where the jewel is arranged melts. When, for example, a diamond cut into a specific shape is used as a jewel, a part of the diamond is buried in a wax mold, and the molten wax material comes into contact with the entire circumference of the girdle portion. As a result, the jewel is fixed to the wax mold, and the movement of the jewel is suppressed in the subsequent process. As a result, the jewel is fixed to the jewelery body, and the jewel is prevented from falling off from the jewelery body.

Further, as a gemstone, in an amorphous gemstone (for example, rough diamond), an elongated portion in which a wax material is extended is formed in a part of the amorphous gemstone. The stretched portion is a wax-shaped portion formed by the molten wax material extending along the surface of the amorphous gemstone and entering a part of the uneven portion of the surface of the amorphous gemstone. be.

This allows the amorphous gem to be stably fixed to the wax mold. For this reason, amorphous gemstones are restrained from moving during mold making and casting. Then, when cast, a part of the amorphous jewel is buried in the main body of the accessory, and a raised portion where a part of the main body of the accessory is raised is provided along the surface of the irregular jewel and in contact with the surface. Be done. Here, the extension portion formed in the wax mold described above is formed as a raised portion of the accessory body. Therefore, in the accessory manufactured by the method for manufacturing the accessory of the present disclosure, the amorphous jewel is stably fixed at a predetermined position of the accessory body, and the jewel can be prevented from falling off from the accessory body.

As described above, the raised portion is a portion corresponding to the extended portion formed by melting the wax material. For this reason, the raised portion is formed as a natural sculptural beauty that has not been seen in the conventional stone-fastened jewelry, and the jewelry obtained by the method of the present disclosure is aesthetically pleasing. As described above, the method of manufacturing the accessory and the accessory can easily fix the jewel. In addition, it is efficient without increasing the manufacturing cost, and it is possible to prevent the appearance of the accessory from being spoiled.

Here, a method of arranging a jewel (for example, an amorphous jewel) after melting a part of the wax mold is also conceivable.
In this case, since the cold gemstone is arranged with respect to the melted portion, it is difficult to form the above-mentioned elongated portion even if the amorphous gemstone is arranged. For this reason, it becomes difficult to fix the jewel in a predetermined position of the accessory body, and it becomes difficult to prevent the jewel from falling off from the accessory body. Further, since the extension portion is difficult to be formed, the appearance is different from that of the jewelry of the present disclosure.

In this disclosure, "gemstone" includes natural gemstones, synthetic gemstones, artificial gemstones, imitation gemstones, and gemstones of natural gemstones. In this disclosure, the stones contained in the gemstone are as follows. Natural gems include naturally occurring gems such as diamonds, rubies, sapphires and crystals. In addition, natural gemstones also include treated gemstones that have been subjected to treatments such as improvement (enhancement) and modification (treatment). Synthetic gems are artificially created gems that have the same or similar chemical, physical, and internal structures as natural stones. Synthetic gems are also called artificial gems. Although artificial gems do not exist in nature, they have certain chemical properties, physical properties, and internal structures, and use substances different from natural gems such as cubic zirconia (CZ) and yag (YAG). A jewel created by Imitation gems have colors, appearances, etc. that imitate natural gems, but have different chemical properties and physical structures. For example, gems that are formed by imitating natural gems using glass, plastic, ceramics, etc. To say.

In the present disclosure, "atypical" means a shape having an irregular surface shape and a large number of irregular corners and surfaces. For example, it is produced by nature and does not have a certain shape when it is mined.

In the present disclosure, gemstone "raw stone" is a naturally produced gemstone that is produced as a raw material for natural gemstones and has not been cut or polished (naturally produced, mined). (As it is). If the gemstone of a natural gemstone is too large, it may be machined to a size suitable for jewelry. Specific examples of the rough stones include rough stones such as diamond, ruby, and sapphire.

Hereinafter, an example of a preferred embodiment of an example of the manufacturing method of the accessory of the present disclosure will be described together with the accessory with reference to the drawings. As a typical example of the accessory, a case where the accessory is a ring will be described. The accessories and the manufacturing method thereof of the present disclosure are not limited to rings, but include earrings, piercings, pendants and the like other than rings.

[Correction under Rule 91 17.08.2020]
(First Embodiment)
1 to 3 are schematic views schematically showing an example of an embodiment of the accessory of the present disclosure. 1 is a perspective view, FIG. 2 is a front view, and FIG. 3 is a side view. The ring 1 (an example of an accessory) shown in FIG. 1 and the like is manufactured by the manufacturing method of the present disclosure, and the accessory main body 3 (an example of an accessory main body) and a rough diamond 11 (an example of an amorphous gemstone; hereinafter, It is simply referred to as rough stone 11). The accessory body 3 is provided with a finger insertion portion 5 formed in an annular shape. The dimension of the inner circumference of the finger insertion portion 5 is a dimension into which a human finger can be inserted. By inserting a finger into the finger insertion portion 5, the ring 1 is worn on the user's finger. The rough stone 11 is buried in a part of the outer peripheral surface of the ring 1 toward the center of the finger insertion portion 5 in the outer peripheral surface of the accessory main body 3. A raised portion 21 is formed on a part of the surface of the rough stone 11 so as to be in contact with the surface of the rough stone 11 from the accessory main body 3.

In the front view of the ring 1 (direction seen from the finger insertion portion 5) (see FIG. 2), the outer peripheral surface of the accessory body 3 is the finger insertion portion 5 on the side opposite to the rough stone 11 side from the center of the finger insertion portion 5. It is formed in a substantially U shape along the inner peripheral surface of the. Further, the outer peripheral surface of the accessory main body 3 is formed in a substantially trapezoidal shape from the center of the finger insertion portion 5 to the rough stone 11 side in a shape in which the width of the finger insertion portion 5 gradually decreases as the width of the finger insertion portion 5 approaches the rough stone 11. In the side view of the ring 1 (see FIG. 3), the thickness of the accessory main body 3 gradually decreases from the rough stone 11 side to the opposite side of the rough stone 11. The surface 25 on which the rough stone 11 which is a part of the outer peripheral surface of the accessory main body 3 is arranged is formed in a substantially rectangular shape and is formed in a substantially flat surface shape except for the raised portion 21. The term "substantially flat" means that there may be irregularities with a height difference of about 20%.

[Correction under Rule 91 17.08.2020]
The raised portion 21 is a portion where a part of the accessory main body 3 is in contact with the surface of the rough stone 11 and is raised. The raised portion 21 is a portion where the melted wax material of the wax mold is stretched along the surface of the rough stone 11 by surface tension and formed around the rough stone 11 in the gem placement step in the manufacturing method described later, and the raised portion 21 is formed accordingly. It is formed on the ring 1. The raised portion 21 has a shape that contacts a part of the rough stone 11. The ring 1 is manufactured as described later, and the material of the raised portion 21 is embedded in the unevenness of the surface of the rough stone 11, and the rough stone 11 is stably fixed to the raised portion 21.

The burial rate should be in the range of 10% or more and 60% or less from the viewpoint of fixing and aesthetics of the rough stone 11. The length to be buried may be 15% or more, 20% or more, 25% or more, or 30% or more. Further, it may be 50% or less, or 40% or less. The burial ratio is the ratio of "the height at which the raised portion is formed from the outer peripheral surface" to "the total length of the stone where the stone is visible from the outer peripheral surface", that is, "the top portion of the rough stone 11 from the surface 25 shown in FIG. 2". It is said to be the ratio of the "maximum length from the surface 25 to the raised portion 21 (L2)" to the "maximum length up to (L1)".

In the first embodiment, the gemstone is a rough diamond as an example, but the present invention is not limited to this. The jewel may have a property of being able to withstand heat applied at the temperature of the molten metal when casting the accessory body 3. The gemstone may be an amorphous gemstone (for example, a gemstone), and specifically, a gemstone such as diamond, ruby, or sapphire. When gemstones are used as amorphous gemstones, the number of gemstones may be one or more. Further, as the type of gemstone, one type may be used alone, or two or more types may be used in combination. When at least one of rough diamond, rough ruby, and rough sapphire is used as the amorphous stone, it may be damaged by the temperature of the molten metal in the casting process and the shrinkage of the metal as it cools and hardens. It is suppressed. From this point of view, among these, rough diamond is more preferable. By selecting rough diamonds, it is possible to apply raw diamonds of previously unused quality to jewelry as they are. For this reason, wasteful consumption of resources can be suppressed, which can contribute to the creation of a sustainable society.

The material of the fitting body 3 is not particularly limited, and may be any metal such as a metal selected from the group consisting of silver, gold, platinum, and copper, an alloy of these metals, and an alloy containing a trace metal in these metals. There may be. The target metal may be used depending on the jewelry to be manufactured. Further, the accessory main body 3 may be provided with a plating layer depending on the purpose.

Next, a method for manufacturing the ring 1 according to the embodiment of the present disclosure will be described.
The ring 1 is manufactured by a process including at least the following steps.
FIG. 4 is a flowchart for explaining the manufacturing method of the ring 1 (first embodiment) of the embodiment of the present disclosure.
Step ST1 is a step of manufacturing the fitting main body wax mold 51 (hereinafter, also referred to as a wax mold manufacturing step), step ST2 is a step of heating the rough stone 11 (hereinafter, also referred to as a jewel heating step), and step ST3 is a fitting main body wax mold 51. A step of arranging the rough stone 11 (hereinafter, also referred to as a jewel placement step), a step ST4 is a step of producing a mold using a casting tool main body wax mold 51 on which the rough stone 11 is arranged (hereinafter, also referred to as a mold making step), a step. ST5 is a step of manufacturing the fitting main body 3 using a mold (hereinafter, also referred to as a casting step).
The method for manufacturing the ring 1 is as follows: (1) a step of producing a prototype having the same shape as the accessory body 3 (prototype production step), and (2) a wax mold of the accessory body using the prototype before the step of step ST1. It may have a step (rubber mold making step) for making a rubber mold for making 51. Further, after the step of step ST4, there may be a step (3) of performing a finishing process on the accessory main body 3 (finishing step).

Each step shown in FIG. 4 will be described.
Step ST1 (wax mold manufacturing process):
The wax mold manufacturing step is a step of manufacturing a wax mold 51 for fastening the rough stone 11. In the wax mold manufacturing step, when the wax mold is manufactured through the steps (1) and (2) above, the obtained rubber mold is cut up and down to remove the metal prototype, and then the mold is reassembled. After that, the molten wax material is injected into the hollow portion of the rubber mold, and the inside of the rubber mold is filled with the wax material. After the filled wax material is solidified, it is taken out from the rubber mold to obtain a wax mold 51. On the other hand, in the case of manufacturing with a 3D printer, the wax mold 51 is manufactured based on the three-dimensional data.

5 and 6 are perspective views schematically showing an example of a wax mold applied to one embodiment of the manufacturing method of the present disclosure. The wax mold 51 shown in FIGS. 5 and 6 is a model for manufacturing the accessory body 3 of the ring 1. FIG. 5 is a perspective view from the side where the rough stone 11 is fastened, and FIG. 6 is a perspective view from the side opposite to the side where the rough stone 11 is fastened. The rough stone 11 is fastened to the outer peripheral surface of the wax mold 51. On the outer peripheral surface of the wax mold 51, a planned burial position 61 in which the rough stone 11 is arranged is provided. The planned burial position 61 is provided with a bank portion 65 formed in a substantially circular shape and a recessed portion 63 formed inside the bank portion 65. The position, shape, and number of the planned burial positions 61 are not particularly limited, and may be provided at predetermined positions, shapes, numbers, and the like. Providing the wax mold 51 with the planned burial position 61 has advantages such as easy determination of the position where the jewel is placed in the jewel placement process and easy maintenance of the shape after the jewel is placed. In the first embodiment, the surface facing the surface where the planned burial position 61 is provided is not provided with a wax-shaped hole (see FIG. 6).

As the wax material for producing the accessory body wax mold 51, for example, a wax material having a melting point of about 50 ° C. or higher and 130 ° C. or lower is used. Depending on the purpose, for example, a wax material having a melting point of 55 ° C. or higher and 85 ° C. or lower (preferably 55 ° C. to 65 ° C.) may be used, and a wax material having a melting point of more than 85 ° C. and 130 ° C. or lower (preferably 100 ° C. to 120 ° C.) may be used. A wax material having a melting point of) may be used. As the wax material, for example, a paraffin-based wax (wax having a paraffin skeleton) or the like is used. The shape, color, etc. of the wax material to be used may be selected according to the purpose.

Step ST2 (gem heating process):
In the gem heating step, the gemstone 11 (an example of gem) to be embedded in the wax mold 51 is heated. The heating method is not particularly limited, and examples thereof include a method using a burner. For heating the rough stone 11, the heat source may be brought into direct contact with the rough stone 11 or indirectly. The rough stone 11 is preferably heated to a temperature within 20% before and after the melting point of the wax mold 51. At this time, it is preferable to heat from the side embedded in the wax mold 51 of the rough stone 11.

Step ST3 (jewel placement process):
The gem placement step is a step of melting the planned burial position 61 of the wax mold 51 obtained in the wax mold manufacturing step of step ST1 with heat from the rough stone 11 and arranging the rough stone 11 at the planned burial position 61 in the melted state. be. In this step, by bringing the rough stone 11 heated in step ST2 into contact with each other, a wax mold 51 for an accessory body with the rough stone 11 in which a part of the rough stone 11 is buried at a position to be buried is produced. At this time, as will be described later, it is preferable to bring the rough stone 11 into contact with the wax mold when the rough stone heated in step ST2 reaches a temperature within 20% before and after the melting point temperature of the wax mold 51.
The wax mold 51 may be melted by heat and then the heated rough stone may be buried in the planned burial position 61.

7 and 8 are process diagrams schematically showing an embodiment of the manufacturing method of the present disclosure. FIG. 7 shows a state after the rough stone 11 is heated and before the rough stone 11 is fastened to the planned burial position 61 of the wax mold 51, and FIG. 8 shows the heated rough stone 11 at the planned burial position 61 of the wax mold 51. Represents the state of contact.

The melting temperature for melting the planned burial position 61 may be any temperature as long as the wax material at the planned burial position 61 is melted by contacting the heated rough stone 11, preferably a temperature equal to or higher than the melting point. From the viewpoint of suppressing excessive melting of the wax material at the planned burial position 61 and its peripheral portion, the melting temperature is not too high (for example, as described above, it is preferably within 20% before and after the melting point temperature. It is preferable to heat the wax material to a temperature close to the melting point. For example, in the case of a wax material having a melting point of about 60 ° C., the wax material at the portion in contact with the heated rough stone 11 is around 60 ° C. (for example, 55). It is preferable that the temperature is (° C. or higher and 65 ° C. or lower). Within this range, for example, the shape of the wax mold 51 is suppressed from collapsing, and the stone is easily fixed at the planned burial position 61. The melting time for contacting the rough stone 11 and melting the planned burial position 61 is preferably 1 to 20 seconds. The melting time is the time for contacting the heated jig or the heated stone with the planned burial position 61. In terms of suppressing excessive melting of the wax material, the melting time is often 10 seconds or less, 5 seconds or less, and 3 seconds or less. At the planned burial position 61. After fixing the stone, it is preferable to cool it by air cooling or the like. The melting temperature and melting time are not particularly limited, and the rough stone 11 is partially buried and the wax material is melted to form an elongated portion. The arrangement of the rough stone 11 may be adjusted to the extent possible.

When the rough stone 11 heated to the extent that the wax mold melts is brought into contact with the planned burial position 61 of the wax mold 51 and pressed against it, the wax material melts. The molten wax material infiltrates the unevenness of the rough stone 11 due to surface tension and extends along the surface of the rough stone 11. After cooling, a part of the rough stone 11 is buried, and a wax mold 51 with the rough stone 11 having an extension portion 71 formed around the rough stone 11 is obtained (see FIG. 8). The extended portion 71 is formed as a raised portion 21 which is a raised portion of a part of the accessory main body 3 in the casting process (see FIG. 1). In particular, when rough diamond (raw stone 11) is used, since the rough stone 11 has lipophilicity, it has a high affinity with wax, and it is considered that the molten wax material easily extends around the rough stone 11. Therefore, in the obtained ring 1, the rough stone 11 and the accessory main body 3 are more firmly fixed, and the raised portion 21 is formed in a shape resembling the natural beauty of modeling.

Step ST4 (mold making process):
The mold making step is a step of making a mold using the wax mold 51 with the rough stone 11 made in step ST3. The mold is formed of, for example, a refractory material. First, the wax mold 51 with the rough stone 11 obtained in the gem placement process is prepared. Next, gypsum is prepared as a refractory, and the wax mold 51 with the rough stone 11 is embedded in the gypsum dissolved in water. If necessary, the gypsum in which the wax mold 51 with the rough stone 11 is embedded in the gypsum may be defoamed. Next, it is dried, degassed and cured, and then fired. By heating and firing the gypsum after drying and curing, the gypsum is fired and the wax mold 51 is burnt down, leaving the rough stone 11. As a result, a gypsum mold (an example of a mold) with a rough stone 11 (not shown) in which a cavity is formed by burning the wax material can be obtained.

The mold may be made by using this wax tree after making a wax tree in which a plurality of wax molds 51 with rough stones 11 are connected in a tree shape (not shown). In the wax tree, a plurality of prepared wax molds 11 with rough stones 11 are welded to a core member made of a wax material and connected in a tree shape. The mold is produced by accommodating the produced wax tree in a container such as a cylinder, pouring a refractory material such as plaster around the wax tree, and passing through the above-mentioned process.

Step ST5 (casting process):
The casting step is a step of casting a molten metal into the cavity of the plaster mold obtained in step ST4 to produce an accessory main body 3 with a rough stone 11 in which a part of the rough stone 11 is buried. For example, a molten gold alloy (an example of a molten metal) is injected into the cavity of the gypsum mold obtained above. After the injected molten metal solidifies, the gypsum mold is crushed, and the accessory main body 3 with the rough stone 11 having substantially the same shape as the wax mold 51 with the rough stone 11 is taken out. The molten metal is not limited to an alloy of gold, and may be any metal such as, for example, a metal selected from the group consisting of silver, gold, platinum, and copper, and an alloy of these metals.

(Other processes)
The above-mentioned (1) prototype making step is a step of making a prototype for making a rubber mold. In the prototype manufacturing process, a prototype that serves as a model of the ring 1 that is an accessory is manufactured using a material such as metal, and the prototype is prepared. The above (2) rubber mold manufacturing step is a step of manufacturing a rubber mold for manufacturing a wax mold that serves as a model of the ring 1. In the rubber mold making step, the prototype made in the prototype making step is installed in a mold for making a rubber mold, and a rubber material such as silicon rubber is filled and cured to make a rubber mold.

The above (3) finishing step is a step of performing a finishing process on the metal part of the accessory main body 3 with the rough stone 11 obtained above to obtain a product as an accessory. The finishing process is to remove unnecessary parts such as the runner of the accessory body 3 with the rough stone 11 taken out from the plaster mold, polish the necessary parts such as the separated parts, correct the strain, and remove the oxide film if necessary. The target ring 1 can be obtained by performing a treatment according to the purpose such as pickling for the purpose.

According to the first embodiment, since the rough stone 11 is heated and embedded in the wax mold 51, the wax mold is melted by the heat of the rough stone 11 and the melted wax material enters a part of the uneven portion on the surface of the gemstone. Therefore, the mold obtained by using such a wax mold 51 has a shape corresponding to the uneven portion, and the molten metal enters the uneven portion of the gemstone in the casting process, and the rough stone 11 is stable on the accessory main body 3. Can be fixed. That is, it is possible to prevent the position of the gemstone from moving when the gemstone is cast in a wax mold, which has occurred in the conventional method of fastening the gemstone by waxing.

Further, according to the first embodiment, the manufacturing cost is not increased and the appearance of the accessory is not impaired.
That is, a pin or tab that serves as a claw for fastening the jewel, and a frame that serves as a frame that surrounds the jewel are provided in a wax mold, and the claw and the part that becomes the frame are thermally deformed to form the edge of the jewel. A method of embracing (hereinafter, also referred to as a comparison method) was examined, but the first embodiment is superior as follows.

When fastening the jewel by the comparison method, the pin, tab, or frame is thermally deformed to hold the jewel. However, in the comparison method, it is necessary to artificially provide a pin, tab, or frame stone fastening part in order to fasten the jewel, and this stone fixing part is thermally deformed with a jig or the like to deform the jewel. It is necessary to go through the process of embracing. When fastening amorphous jewels by the comparison method, the wax mold is thermally deformed by a jig or the like. For example, in order to fasten a diamond cut into a specific shape, it is difficult for the wax material to come into contact with the entire circumference of the girdle portion of the diamond even if it is thermally deformed by a jig or the like. In this respect, the comparison method and the accessory are different from the first embodiment. Further, it is different from the appearance shape of the accessory of the present disclosure.

In addition to these, for example, in the case of fastening an amorphous gemstone, in the comparison method, a pin, a tab, or a stone fastening part of a frame (a stone fastening part matching the shape of the irregular gemstone) is attached to the wax mold. It will be provided. Further, the wax mold is thermally deformed by a jig or the like to form a melted portion according to the shape of an amorphous gemstone. For this reason, it is inefficient to fasten jewels by the comparison method, and it is not possible to obtain jewelry that is beautiful in appearance. Further, in the comparison method, since the amorphous gemstone is not heated and then arranged in the wax mold, a portion where the wax is raised is not formed on the surface of the amorphous gemstone. In addition, since it is rarely embedded in the jewelry body, the jewel is not sufficiently fixed and a raised portion is not formed.

(Second Embodiment)
FIG. 9 is a perspective view schematically showing the accessory (ring 101) of the second embodiment, and is a perspective view from the side opposite to the side where the rough stone 11 is fastened. The perspective view from the side to which the rough stone 11 is fastened is the same as that of FIG. 1 of the first embodiment (ring 101), and thus is omitted.
Further, FIGS. 10 and 11 are perspective views schematically showing an example of a wax mold applied to one embodiment of the manufacturing method of the present disclosure, as in FIGS. 5 and 6. The wax mold 151 is a model for manufacturing the accessory main body 103 of the ring 101. FIG. 10 is a perspective view of the wax mold 151 from the side where the rough stone 11 is fastened, and FIG. 11 is a perspective view of the wax mold 151 from the side opposite to the side where the rough stone 11 is fastened.

As shown in FIG. 9, the accessory (ring 101) of the second embodiment is the accessory (ring 101) of the first embodiment provided with the accessory hole 113. Further, as shown in FIGS. 10 and 11, the wax mold 151 used for manufacturing the ring 101 is provided with the wax mold hole portion 175. Hereinafter, the same parts as those of the first embodiment will be omitted, and the parts different from the first embodiment will be described. The manufacturing process of the ring 101, which is an example of the accessory of the second embodiment, is the same as the process described in the first embodiment.

As shown in FIG. 9, the accessory main body 103 of the ring 101 of the second embodiment is provided with an accessory hole 113 at a position on the inner peripheral surface facing the position where the rough stone 11 is arranged on the outer peripheral surface. The accessory hole 113 has a substantially circular shape and penetrates from the outer peripheral surface to the inner peripheral surface of the accessory main body 103. In the present disclosure, the substantially circular shape is a concept including a shape close to a circle and a shape close to an ellipse. The maximum diameter of the accessory hole 113 is formed to be smaller than the maximum diameter of the rough stone 11. The maximum diameter of the accessory hole 113 may be, for example, 1 mm or more, or 2 mm or more. The shape and maximum diameter of the accessory hole 113 are not limited to those described above, and may be such that the rough stone 11 does not easily fall off. When viewed from the side opposite to the side where the rough stone 11 of the ring 101 is fastened, the rough stone 11 can be visually recognized from the accessory hole 113 on the inner peripheral surface.

In the second embodiment, the wax mold 151 having the shape shown below is manufactured in step ST1 (wax mold manufacturing step) shown in FIG.
As shown in FIG. 10, the outer peripheral surface of the wax mold 151 is provided with a planned burial position 161 in which the rough stone 11 is arranged. The planned burial position 161 is provided with a bank portion 165 formed in a substantially circular shape and a recess portion 163 formed inside the bank portion 165, and a wax type hole portion 175 is provided inside the recess portion 163. Has been done. By having the recessed portion 163, it is possible to prevent the wax mold hole portion 175 from being buried when the heated rough stone 11 is arranged. The wax mold hole penetrates from the outer peripheral surface to the inner peripheral surface of the wax mold. The maximum diameter of the wax mold hole 175 is smaller than the maximum diameter of the rough stone 11, and may be, for example, 1 mm or more, or 2 mm or more. The position, shape, and number of the planned burial positions 161 including the wax mold holes 175 are not particularly limited, and may be provided at predetermined positions, shapes, numbers, and the like. Further, it suffices if the rough stone 11 has a structure that does not easily fall off.

If the wax mold 151 is provided with the wax mold hole 175, a part of the plaster which is the mold material enters the wax mold hole 175 when the plaster mold (an example of the mold) is manufactured. As a result, the rough stone 11 is supported by the plaster in the mold, so that the rough stone 11 is housed in the plaster mold while being held by the plaster. Therefore, the position of the rough stone 11 in the plaster mold can be easily determined. Then, even if the molten metal is injected into the cavity in the mold after the wax mold 151 is burnt down, the movement of the rough stone 11 is suppressed. Therefore, since the wax mold 151 is provided with the wax mold hole portion 175, the arrangement of the rough stone 11 fastened to the accessory main body 103 is more easily determined, excessive burial is suppressed, and the rough stone 11 is more fixed. It will be easier.

(Third Embodiment)
FIG. 12 is a perspective view schematically showing the accessory (ring 201) of the third embodiment, and is a perspective view from the side opposite to the side where the rough stone 11 is fastened. The perspective view from the side where the rough stone 11 is fastened is the same as that of FIG. 1 of the first embodiment, and thus is omitted.
Further, FIG. 13 is a perspective view schematically showing an example of a wax mold applied to one embodiment of the manufacturing method of the present disclosure, as in FIGS. 6 and 11, which is opposite to the side to which the rough stone 11 is fastened. It is a perspective view from the side. The wax mold 251 is a model for manufacturing the accessory main body 203 of the ring 201. The perspective view from the side to which the rough stone 11 is fastened is the same as the wax mold 151 for manufacturing the ring 101 of the second embodiment, and thus is omitted.

The accessory (ring 201) of the third embodiment has an accessory hole in the accessory groove 235 and the accessory groove 235 on the inner peripheral surface of the accessory body of the accessory (ring 101) of the second embodiment, as shown in FIG. The part 213 is provided. Further, as shown in FIG. 13, a wax mold groove portion 285 and a wax mold hole portion 275 are provided inside the wax mold groove portion 285 on the inner peripheral surface of the wax mold 251 used for manufacturing the ring 201. Hereinafter, the same parts as those of the first embodiment and the second embodiment will be omitted, and the parts different from the first embodiment and the second embodiment will be described. The manufacturing process of the ring 201, which is an example of the accessory of the third embodiment, is the same as the process described in the first embodiment.

In the third embodiment, the wax mold 251 having the shape shown below is manufactured in step ST1 (wax mold manufacturing step) shown in FIG.
In the wax mold 251 of the third embodiment, a wax mold groove portion 285 is provided on the inner peripheral surface in a region on the rough stone 11 side from the central portion of the finger insertion portion 205. The wax mold hole portion 275 is provided inside the wax mold groove portion 285, and is arranged at a substantially central portion of the wax mold groove portion 285. By providing the wax type groove portion 285, the accessory groove portion 235 is provided in the ring 201, so that the weight of the ring 201 can be reduced. As a result, advantages such as resource saving can be obtained. By providing the accessory groove portion 235, the thickness of the portion where the rough stone 11 is arranged becomes thin. Therefore, a protective portion (not shown) may be provided so that the rough stone 11 does not come into direct contact with the finger when the finger is inserted into the ring 201, as long as the accessory hole 213 is not blocked.

(Fourth Embodiment)
14 and 15 are perspective views schematically showing the accessory (ring 301) of the fourth embodiment. 14 and 15 show an example of an accessory using a diamond jewel 111 cut into a specific shape as a jewel, and are perspective views from the side to which the jewel 111 is fastened and the opposite side. The wax mold is the same as the wax mold for manufacturing the ring 201 of the third embodiment, and is therefore omitted. Hereinafter, the same parts as those of the first to third embodiments will be omitted, and the parts different from the first to third embodiments will be described.

In the fourth embodiment, in the jewel 111, a part of the jewel 111 is embedded in the jewelry body. Specifically, the parts of the gem 111 buried are the girdle, a part of the crown around the girdle, and a part of the pavilion around the girdle. When these parts are heated and the heated gem 111 is placed in a wax mold, the wax material at the planned burial position melts, and the melted wax material becomes these parts (the girdle and a part of the crown around the girdle). , Part of the pavilion around the girdle). As a result, these parts are buried in the wax mold. Then, when cast, the jewelery body surrounds the girdle, a part of the crown around the girdle, and a part of the pavilion around the girdle, and a part of the jewel is buried in the jewelery body. As shown in FIG. 15, when viewed from the side opposite to the side where the jewel 111 of the ring 301 is fastened, the curette of the jewel 111 can be visually recognized from the accessory hole 313 on the inner peripheral surface.

The manufacturing process of the ring 301, which is an example of the accessory of the fourth embodiment, is the same as the process described in the first to third embodiments. However, in the fourth embodiment, in step ST3 (gem placement step, that is, the third step) shown in FIG. 4, the girdle of the jewel, a part of the crown around the girdle, and a part of the pavilion around the girdle The part is buried in a wax mold. The jewel 111 is preferably heated over the entire circumference of the girdle in that the position where the jewel is fastened can be easily determined and the jewel can be easily fixed. The heating temperature and heating time are the same as those described in the first embodiment. In the fourth embodiment, a raised portion (not shown) may be formed.

In the fourth embodiment, the gemstone 111 is a diamond gemstone cut into a specific shape, but the gemstone is not limited to this, for example, a sapphire cut into a specific shape, a specific shape. It may be a gemstone cut into a specific shape (facet cut, cabochon cut), such as a ruby cut into a diamond. When a gemstone cut into a specific shape is used, in the third step, the most longitudinal portion and the peripheral portion thereof in the cross section of the gemstone may be embedded in a wax mold. For example, as with the gem 111, the girdle of the gem, a part of the crown around the girdle, and a part of the pavilion around the girdle may be buried in a wax mold.

In the present embodiment (the first to fourth embodiments are collectively referred to as the present embodiment), the jewel is not particularly limited. Further, the shape of the accessory body (including the accessory hole and the accessory groove) is not particularly limited. In the present embodiment, a ring is taken as an example, but the present invention is not limited to this. For example, the jewelry of the present disclosure is manufactured by the method of manufacturing the jewelry of the present disclosure, and may be a pendant including a pendant top in which a jewel is fastened to the jewelry body. Similarly, the shape of the wax mold (including the accessory hole and the accessory groove) is not particularly limited. It was

Although the preferred examples of the embodiments of the present disclosure have been described above, the specific configuration is not limited to these, and various changes can be made without departing from the gist of the present disclosure.

1,101,201,301 ... Ring (an example of jewelry)
3,103,203,303 ... Accessory body 5,105,205,305 ...

Finger insertion part

113, 213 ... Accessory hole 21 ... Swelling part,
11 ... Rough diamond (an example of gemstone)
51,151,251 ... Wax type (an example of wax type)
61,161 ... Scheduled burial position 111 ... Jewel (an example of a jewel)
235 ... Accessory groove

Claims

The first step of making a wax mold and
The second step of heating the gem and
A third step of burying a part of the jewel heated in the second step in the wax mold produced in the first step to prepare a jeweled wax mold, and a third step.
A fourth step of producing a jeweled mold using the jeweled wax mold produced in the third step, and
The fifth step of producing the jeweled accessory main body by casting using the jeweled mold produced in the fourth step, and
How to make jewelry, including.
In the third step, when the jewel heated in the second step reaches a temperature within 20% of the melting point temperature of the wax mold, a part of the jewel is buried in the wax mold. The method for manufacturing an accessory according to claim 1.
The method for manufacturing an accessory according to claim 1 or 2, wherein the second step is heating from the side of the jewel buried in the wax mold.
In the first step, the wax mold having a position to be buried, which is defined by a bank portion formed in a substantially circular shape and a recessed portion formed inside the bank portion and has a planned burial position for burying the jewel, is produced. ,
The method for manufacturing an accessory according to any one of claims 1 to 3, wherein the third step is to bury a part of the jewel in the recessed portion of the wax mold.
The first step has a wax mold hole penetrating the wax mold, and the maximum diameter of the wax mold hole is smaller than the maximum diameter of the gemstone.
The method for manufacturing an accessory according to any one of claims 1 to 4, wherein the third step is to bury a part of the jewel in the wax mold hole of the wax mold.
The gem is a cut gem
The accessory according to any one of claims 1 to 5, wherein the third step is to bury the girdle of the jewel, a part of the crown around the girdle, and a part of the pavilion around the girdle in the wax mold. Manufacturing method.
[Correction under Rule 91 17.08.2020]
In the third step, the wax is formed so that the wax material extends along the surface of the gem to form an elongated portion around the position where a part of the gem of the wax mold is buried. A part of the jewel is buried in the mold,
The fifth step is any one of claims 1 to 6 for producing the jeweled accessory main body having a shape corresponding to the extended portion and having a raised portion in contact with the surface of the jewel by the casting. The manufacturing method of the jewelry described in.
The method according to any one of claims 1 to 5 and 7, wherein the gemstone is at least one selected from the group consisting of rough diamond, rough sapphire, and rough ruby.
The method for manufacturing an accessory according to any one of claims 1 to 8, wherein the accessory is a ring.
With jewels
An accessory body having a surface on which the jewel is placed and a part of the jewel embedded in the surface on which the jewel is placed.
Jewelery, equipped with.
The accessory according to claim 10, wherein the gemstone is at least one selected from the group consisting of rough diamond, rough sapphire, and rough ruby.
The accessory according to claim 10 or 11, wherein the accessory body is in contact with the surface of the jewel and a raised portion is provided.
The jewelry body is
It has an accessory hole that penetrates the accessory body,
The maximum diameter of the accessory hole is smaller than the maximum diameter of the jewel.
The accessory according to any one of claims 10 to 12, wherein a part of the jewel is embedded in the accessory hole.
The accessory according to any one of claims 10 to 13, wherein the accessory is a ring.