RU1813026C - Hollow jewelry production method - Google Patents

Abstract

The invention is intended for use in the jewelry industry. SUMMARY OF THE INVENTION: in accordance with a method for producing hollow jewelry, a body with a cavity is made by casting according to smelted models with the manufacture of metal master models and elastic molds for the case and cavity, the master models being placed on centering rods made from material that does not have adhesion to the base metal of the product. In this case, a relief pattern is performed on the master model of the body, and soldering is generally excluded. Copies of the master model of the cavity are also made from the molding mixture, which is then removed from the casting cavity. As a result, high productivity of the manufacturing process is achieved and it becomes possible to lay any enamel on the product body - opaque or transparent. 2 silt. . ate with

Description

The invention relates to a technology for the manufacture of hollow products, for example, jewelry, including enamel, and is intended for use in jewelry production.

The aim of the invention is to develop a method for manufacturing hollow jewelry, providing high productivity of the manufacturing process, as well as the possibility of using any enamel, both opaque and transparent.

Figures 1 and 2 show the main operational sketches characterizing the proposed method for manufacturing hollow jewelry using the example of manufacturing a silver Easter egg with transparent enamel.

A metal master model of the case is prepared with a through hole into which a centering rod is inserted, made of a material that does not adhere to silver, for example, titanium, and if necessary, a decorative relief is made on the surface of the master model (Fig. 1a).

A master model of the body cavity of the product with a hole and a centering rod identical to the hole and the rod of the first (case) master model is prepared (Fig. 16). The first elastic mold is made according to the first (case) master model with a centering bar (Fig. 1 c). The second elastic pre-Cc form is made according to the second (cavity) master model with a centering bar (Fig. 1d). In the second (cavity) elastic mold, a centering bar is laid and the molding is poured

00

with about

to about

with

mixture (fig.1d). A copy of the second (cavity) master model was obtained, made of molding sand and located on a centering bar (Fig. 1 g). The obtained copy of the second (cavity) master model on the 5 centering bar is placed in the first (case) elastic mold; Due to the presence of a centering bar, the gap formed corresponds to the wall thickness of the product body (Fig. 1e). Obtained smelted model of the body of the product; inside the model, the dashed line shows the outline of the copy of the master model of the body cavity made of the molding mixture; a centering current departs downward from the model and a wax gate (Fig. 1i) upwards. .

Models are attacked by injection molding, which is placed in the flask; molding, flattening out the model composition and calcining the flask, molten metal is fed into the flask 20. The castings of the product body are obtained (Fig. 2a). The casting with a copy of the master model of the body cavity of the product made of the molding mixture / s is placed inside it, the mercury system is separated, the rod is removed 25, getting a hole for the pendant

 ..., ear (fig. 2.6), Special instrument in the form of G-ob- ..

:. different rigid wire, fixed in the cartridge of the turbine, through the hole under the compartment eye is inserted into the cavity of the casting for 30

destroying and removing the moldable mixture;: (Fig. 2c). Castings; flute

acid from the remnants of the moldable mixture, after which the usual surface treatment of the casting is performed (Fig. 2d). In the hole 35, a thread is cut under the pendant ear, enamel is laid on the body of the product (Fig. 2d). Made pendant ear-. -.-. to the thread corresponding to the thread in the hole of the housing (fig.2E). Implemented 40. assembly of the product (Fig. 2g).

If any other hollow piece of jewelry is made, then the hole formed in the body after removing the bar can be used 45 to accommodate any functional

or decorative element of the product, including jewelry insert ..:

Using the investment casting process provides many

multiple replication of products and high productivity of the manufacturing process. .-. . : ..

Claims (1)

The manufacture of a solid metal case without rations allows, if necessary, laying on the case of any enamel - opaque or transparent; the use of centering rods makes it possible to fix a copy of the cavity master model made of the molding mixture in the mold of the housing in a strictly specified position, which guarantees uniformity of the thickness of the wall of the housing. The invention is not a Method for the manufacture of hollow jewelry, mainly small, including the manufacture of a metal case with a cavity, decorative processing of the surface of the product and its assembly, mounting, so that in order to ensure high performance of the process, as well as the possibility of producing editions with opaque and transparent enamels, a body with a cavity is inseparable by casting, according to the smelted: models by sequential manufacture of the first metal mast ery-models of the body of the product with a through hole into which the centering rod is inserted, and for the cavity of the body, a metal master model is made with a hole and a rod identical in configuration to the hole and the bar of the First master model, then elastic split molds are produced respectively the first and second master models and place the centering bar in the second elastic mold, after which the molding mixture is poured and a copy of the second master model is received, which is placed with the bar in the first press mu and poured into it model composition, then the resulting product model smelted emuyu housing accommodating the second copy / master model soldered on injection riser is placed in flask, mold, .vy-; playpute. model composition and calcined with subsequent pouring of metal, removing the rack from the flask, separating from the casting rod, removing the molding mixture from the last centering rod and removing the molding mixture through the hole obtained, and upon receipt of enamel products, enamel is laid on the corresponding surface of the casting and assembly is carried out -mounting the elements of the product. and b Phase 7 VZZZZZZZZZZZZA Fie. Z