KR20060074751A - Method for manufacturing a cavity ring - Google Patents

Abstract

The present invention relates to a method for producing a hollow ring which can facilitate mass production by reducing the number of manufacturing steps thereof and can significantly reduce the manufacturing cost.

The present invention provides a ring model of a silver material having a hollow portion formed on an inner diameter surface thereof, and a model manufacturing step of manufacturing an auxiliary model of a silver material fixed to the hollow portion of the ring model; A welding step of fixing the model of the auxiliary body by welding to the hollow portion of the ring model; Rubber frame manufacturing step of manufacturing the upper and lower rubber frame by using the model of the welded ring and the auxiliary body; A wax model manufacturing step of manufacturing a wax model by injecting wax into the upper and lower rubber molds; A gypsum mold making step of preparing a gypsum mold by placing the wax model in a flask and then burying and curing the gypsum and then heating the cured gypsum to dissolve and remove the wax model; After the molten precious metal is poured into the gypsum mold, cooling is performed, and a finishing process is performed to complete the molding of the ring.

Hollow, Ring, Precious Metal, Model-Object, Wax

Description

Method for manufacturing a cavity ring

1 is a perspective view showing a general hollow ring.

Figure 2 is a cross-sectional view showing a conventional hollow ring manufacturing method.

Figure 3 is a process diagram showing a method of manufacturing a hollow ring according to an embodiment of the present invention.

Figure 4 is a process diagram showing a method of manufacturing a hollow ring according to another embodiment of the present invention.

Figure 5 is a cross-sectional view showing a hollow ring manufactured by a manufacturing method according to another embodiment of the present invention.

Brief description of symbols for the main parts of the drawings

1 ring 2 hollow part

3: auxiliary body

The present invention relates to a method for manufacturing a hollow ring having a hollow portion on one side for reducing material and weight, and more particularly, mass production is facilitated by reducing the number of manufacturing steps, and the manufacturing cost is greatly reduced. It relates to a method of manufacturing a hollow ring that can be.

Generally, precious metal jewelry is a kind of ornament made of precious metal which is stable in the air such as gold, silver, platinum, iridium, etc., which does not rust well and has a beautiful luster.

Among these precious metal ornaments, products with relatively monotonous shapes, such as Magoza buttons or Hanbok soothers, are forged with a precious metal plate placed on the mold after the design of the product has been determined, and the portion of the scab that comes out of the mold during such forging is cut. After the cutting operation is completed, the forging obtained by forging is finished and welded with the remaining parts manufactured by forging of another mold to complete the product.

The precious metal ornaments formed by such forging have the advantage of being relatively clean and shortening the production time by applying only physical external force to the precious metal, whereas the soft and malleable precious metals such as gold, silver, platinum, etc. Because only the material can be produced, hard and ductile materials such as 18k, 14k, color gold, etc. are brittle, and the forging is not easy, and the price of the processing mold itself is high, which increases the cost of the product. It became.

Accordingly, the method of manufacturing a complex shape lost wax casting is made of a product model made of a soft and malleable material (usually silver), a rubber mold is formed using the model, and then wax is injected into the product. After drawing the same wax figure as the wax tree (wax tree) work to connect the various wax figures (wax tree) is put into the flask to bury the plaster to cure. When the hardened gypsum is heated to melt and remove the wax, the gypsum mold is completed. The molten metal is poured in accordance with the casting temperature, and the gypsum mold is placed in cold water, leaving only precious metal products.

Meanwhile, as shown in FIG. 1, there is a product in which a predetermined hollow part 2 is formed on one inner circumferential surface of the ring 1 to reduce material and weight.

When the hollow ring 1 is worn on the wearer's finger in a state in which the hollow part 2 is open, the wearing state is very inconvenient, and various foreign substances may flow into the hollow part 2. In addition, since the external appearance is deteriorated, the auxiliary body 3 through which a predetermined pattern is formed is fixed by welding.

In order to manufacture such a hollow ring (1) in the above-described lost wax casting manufacturing method, as shown in Figure 2, the model (silver material) and the predetermined pattern of the ring (2) in which the hollow part 2 is formed After separately manufacturing the model (silver material) of the through-formed auxiliary body 3, each rubber frame is made using each model of the ring 2 and the auxiliary body 3, and then wax is injected into it. Each wax figure of the ring 2 and the auxiliary body 3 is extracted, and each such wax figure is placed in a flask, and then the plaster is buried and cured. The cured gypsum is heated to dissolve and remove each wax model to complete the gypsum mold. The molten metal is poured in accordance with the casting temperature, and then cooled, and the ring 2 and the predetermined pattern having the hollow part 2 formed thereon are cooled. The formed auxiliary body 3 is manufactured.

Then, the auxiliary body 3 is fixed to the hollow part 2 side of the ring 1 by welding, and after finishing the welded part, the product is finished by performing a finishing process such as polishing. Let's go.

That is, in the conventional hollow ring manufacturing method, as described above, each model of the ring (2) and the auxiliary body (3) must be manufactured separately, and correspondingly, the rubber frame must be manufactured separately, and also made of precious metals. The manufactured ring (2) and the auxiliary body (3) should be fixed by welding, and a separate finishing process according to such welding is required.

Accordingly, the manufacturing process is very cumbersome, the material cost and equipment are very large, the welding work is very difficult, and the finishing of the welded part is very cumbersome.

In addition, the work takes a lot of time, the failure rate is very high, and this has the disadvantage that the productivity is very low.

The present invention has been made in view of the above, the manufacturing process is simple, the working time is small, the material cost and equipment is small, no welding work is required, it is very suitable for mass production and very productivity It is an object to provide a method of manufacturing a high hollow ring.

One aspect of the present invention for achieving the above object,

A model making step of manufacturing a silver ring model having a hollow portion formed on an inner diameter surface thereof and an auxiliary model of silver material fixed to the hollow portion of the ring model;

A welding step of fixing the model of the auxiliary body by welding to the hollow portion of the ring model;

Rubber frame manufacturing step of manufacturing the upper and lower rubber frame by using the model of the welded ring and the auxiliary body;

A wax model manufacturing step of manufacturing a wax model by injecting wax into the upper and lower rubber molds;

A gypsum mold making step of preparing a gypsum mold by placing the wax model in a flask and then burying and curing the gypsum and then heating the cured gypsum to dissolve and remove the wax model;

After the molten precious metal is poured into the gypsum mold, cooling is performed, and a finishing process is performed to complete the molding of the ring.

In addition, another aspect of the present invention,

A model manufacturing step of manufacturing a ring model of a silver material in which a pattern of a predetermined shape is engraved on an inner diameter surface;

A rubber frame manufacturing step of producing upper and lower rubber frames using the ring model;

A wax model manufacturing step of manufacturing a wax model by injecting wax into the upper and lower rubber molds;

A gypsum mold making step of preparing a gypsum mold by placing the wax model in a flask and then burying and curing the gypsum and then heating the cured gypsum to dissolve and remove the wax model;

After the molten noble metal is poured into the gypsum mold, it is cooled, finished, and finished.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a process diagram showing a method of manufacturing a hollow ring according to an embodiment of the present invention.

Hollow ring manufacturing method according to an embodiment of the present invention is a model manufacturing step (S1), welding step (S2), rubber frame production step (S3), wax model production step (S4), plaster mold production It consists of a step S5 and a product completion step S6.

In the model manufacturing step S1, as shown in FIG. 2, a ring model having a hollow portion formed on an inner diameter surface of one side, and an auxiliary body through which a predetermined pattern fixed to the hollow portion of the ring model is formed is manufactured.

Here, the material of the model is preferably to use a silver material excellent in ductility and malleability, by using such a silver material will be very easy to process the ring and the auxiliary body.

The welding step (S2) is a step of fixing the ring and the auxiliary model made of silver material by silver welding to integrate the model of the ring and the auxiliary body.

This welding step (S2) is characterized in that the model of the ring and the auxiliary body is made of silver material with excellent ductility and malleability, excellent weldability and very easy welding operation.

In the rubber frame manufacturing step (S3), the upper and lower rubber plates are heated and pressurized at a predetermined temperature and pressure after arranging the ring and auxiliary bodies integrated by welding in the upper and lower rubber plates. The upper and lower rubber molds are formed by engraving the shape corresponding to the model.

In the wax model fabrication step (S4), after the molten wax is injected into the intaglio portion formed on the upper and lower rubber molds and cured, the wax model is separated from the upper and lower rubber molds to produce a wax model in which a ring and an auxiliary body are integrated. .

Plaster mold making step (S5) is performed by disposing the wax model of the shape in which the ring and the auxiliary model are integrated in the flask, then investing and curing the gypsum, and then heating the cured plaster to dissolve and remove the wax model. A gypsum mold having a shape corresponding to the wax model is produced.

In the finished product step (S6), after pouring the molten precious metal such as gold into the gypsum mold, it is cooled to separate the hardened hollow ring from the gypsum mold, and the surface of the separated hollow ring is polished or polished and finished. By processing, the product is completed.

Figure 4 is a process diagram showing a method of manufacturing a hollow ring according to another embodiment of the present invention.

Hollow ring manufacturing method according to another embodiment of the present invention is a model production step (S10), rubber mold production step (S20), wax model production step (S30), gypsum mold production step (S40), Product completion step (S50) is made.

In the model manufacturing step S10, as shown in FIG. 5, a model of the ring 10 in which the engraved pattern 11 of a predetermined shape is formed is manufactured.

Here, the material of the model is preferably to use a silver material excellent in ductility and malleability, by using such a silver material will be very easy to process the engraved pattern on one side of the ring and its inner diameter surface.

In the rubber frame manufacturing step (S20), when a model of a ring having a predetermined negative pattern is placed in the upper and lower rubber plates, the upper and lower rubber plates are heated and pressurized at a predetermined temperature and pressure. The upper and lower rubber molds are formed by engraving the shape corresponding to the model.

Wax model manufacturing step (S30) after the molten wax is injected into the intaglio portion formed in the upper and lower rubber mold and cured, and separated from the upper and lower rubber mold to produce a ring wax model.

Plaster mold making step (S40) is to place the wax model of such a ring in the flask, and after the gypsum is buried and cured, the hardened gypsum is heated to dissolve and remove the wax model to form a shape corresponding to the wax model therein. Produce an engraved gypsum mold.

Product completion step (S50) is after pouring the noble metal of the molten state such as gold in the gypsum mold, and then cooled to separate the hardened hollow ring from the gypsum mold, and polished or polished the surface of the separated hollow ring 10 The product is completed by processing and finishing.

In the present invention as described above, the welding process is carried out during the production of the model of the ring, or by omission of the welding process, unlike the conventional welding process in the product completion stage is omitted, rubber mold, wax model, plaster mold or Since other facilities can be significantly reduced, the manufacturing process can be simplified and a reduction in manufacturing time can be achieved, and it is very suitable for mass production, and there is a feature that can increase productivity.

On the other hand, the manufacturing method of the present invention is not limited to the ring, but may be applicable to various ornaments such as pendants, earrings, necklaces and the like.

The present invention as described above, the manufacturing process is simple, the working time is small, the material cost and equipment is small, and the welding work is not required, it is very suitable for mass production, there is an effect that the productivity is very high.

In the above, the present invention has been illustrated and described with respect to certain preferred embodiments. However, the present invention is not limited only to the above-described embodiments, and those skilled in the art may vary without departing from the spirit of the technical idea of the present invention described in the claims below. It may be changed.

Claims (2)

A model making step of manufacturing a silver ring model having a hollow portion formed on an inner diameter surface thereof and an auxiliary model of silver material fixed to the hollow portion of the ring model; A welding step of fixing the model of the auxiliary body by welding to the hollow portion of the ring model; Rubber frame manufacturing step of manufacturing the upper and lower rubber frame by using the model of the welded ring and the auxiliary body; A wax model manufacturing step of manufacturing a wax model by injecting wax into the upper and lower rubber molds; A gypsum mold making step of preparing a gypsum mold by placing the wax model in a flask and then burying and curing the gypsum and then heating the cured gypsum to dissolve and remove the wax model; A method of manufacturing a hollow ring, comprising a product completion step of cooling the molten noble metal after pouring it into the gypsum mold and subjecting it to a finishing process. A model manufacturing step of manufacturing a ring model of a silver material in which a pattern of a predetermined shape is engraved on an inner diameter surface; A rubber frame manufacturing step of producing upper and lower rubber frames using the ring model; A wax model preparation step of manufacturing a wax model by injecting wax into the upper and lower rubber molds; A gypsum mold making step of preparing a gypsum mold by placing the wax model in a flask and then burying and curing the gypsum and then heating the cured gypsum to dissolve and remove the wax model; A method of producing a hollow ring, characterized in that the product comprises a product completion step of cooling after pouring the noble metal melted in the gypsum mold and performing a finishing process.

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