JPH06166255A - Formation of indented character, mark, etc., on surface of metal plate - Google Patents

Abstract

PURPOSE:To form precisely easily a delicate touch character like a brush character or a complicated mark, etc., on a metal surface. CONSTITUTION:A negative plate of a negative 2 (or positive) film on which a character, a mark, etc., are photographed is printed on a photosensitive resin board 3 by positioning it inversely. An irregularity pattern of the character, mark, etc., is formed on the board surface by processing it by a post water treatment. Then, a molding box is formed so as to surround it, and wax is casted thereinto. When the wax is solidified, the molding box is removed, and a wax model wherein the indented pattern of the character, mark, etc., is formed on its surface is prepared. Then, a slurry coating wherein the wax model 6 is dippeded into a slurry solution and besides, coated by a ceramic powder is carried out a suitable number of times, and a coating model 10 of a suitable wall thickness is formed. After processing dewaxing by heating the coating model, a burnt cast mold is formed. An objective product is manufactured by casting melted metal into a cavity of the mold.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming uneven characters and marks on the surface of a metal plate.

[0002]

2. Description of the Related Art Conventionally, in order to form uneven characters and marks on the surface of a metal plate, it is necessary to directly cut the surface of the plate, which is very troublesome and requires a long time. It has become.

[0003]

As described above, the cutting of the metal plate requires a longer time as the characters and figures become more complicated, even if it is performed by NC control. It was virtually impossible to have such an extremely delicate touch. The present invention solves the above problems without using cutting, that is, by combining photography and a special casting method using lost wax.

[0004]

According to the present invention, an original plate of a negative (or positive) film on which characters and marks are photographed is printed on a photosensitive resin plate in the reverse position, baked, and then treated with water. Form an uneven pattern such as letters and marks on the plate surface, then form a mold so as to surround it and pour wax into it, and when it solidifies, remove the mold and remove the uneven pattern such as letters and marks on the surface. Create a wax mold to be formed, then immerse the wax mold in a slurry solution and apply ceramic powder to perform slurry coating for a suitable number of times to form a coating mold having an appropriate meat pressure, and heat the coating mold. It is characterized in that after dewaxing, a fired mold is prepared and molten metal is poured into the mold cavity for production.

[0005]

[Function] By a combination of a photoengraving technology that uses a negative (or puji) film on which characters and marks are photographed to create an original plate by printing on a photosensitive resin plate, and a lost wax technology that uses wax, Even with delicate brush letters and complicated marks, the necessary mold can be easily created, and by this, it is possible to create brush letters and complicated mark patterns on the surface of a metal plate extremely inexpensively and efficiently.

[0006]

EXAMPLE An example will be described as an example of manufacturing a paperweight in which a part of the scriptures of the general juvenile sutra is exposed as a projection on a metal plate surface. Figure 1 is a scripture from the Hankatsu Sutra 1. Now, assuming that the title of this sutra, "Major Wakahara Mitsutoshin," 1a is selected, the character 1a is photographed to produce the negative (or positive) film 2 shown in FIG.

Next, as shown in FIG. 3, the film 2 is placed on the photosensitive resin plate 3 in a state where the characters 1a are reversed, and is baked for a certain time (about 3 minutes).

FIG. 4 shows a product which has been subjected to water treatment after baking as described above, in which the part of the baked character is formed as a recessed character 1'a on the photosensitive resin plate 3.

Next, as shown in FIG. 5, a frame 4 is formed so as to surround the concave character 1'a portion on the plate surface, and an appropriate amount of wax 5 is poured from above.

FIG. 6 is a perspective view of a wax mold 6 formed by removing the frame 4 after solidification of the wax poured as described above.
The sutras 1a are formed in a projected form on the surface of the.

FIG. 7 shows a state in which the wax mold 6 is dipped in the slurry liquid tank 7. Although the description is omitted in the above, in order to make the wax mold 6, it is possible to inject a molten metal described later. The sprue 8 is formed as a wax shape excluding the grip portion 9. During the above-mentioned dipping, the grip 9 is held in the hand to dip it including the sprue 8, and then the ceramic powder is applied. ) Can be repeated several times to form a coating layer having a required meat pressure. Figure 8
Is the coating mold 10.

Then, the wax mold 6 coated
Is dried and put in a heating pot (at a temperature of 150 ° C. and an atmospheric pressure of about 7 atm) for a certain period of time to remove the wax inside the heating pot except for the handle portion 9, and then the mold is fired to form a mold. After that, molten metal (stainless steel, copper, aluminum, etc.) is injected from the gate 8 side.

As described above, in the mold in which the molten metal is injected, the outer coating layer may be destroyed after the mold is cooled, and the scale adhering to the peripheral surface is appropriately removed. FIG. 9 shows the product 11 thus manufactured (paperweight containing the sutra 1a).

[0014]

The present invention is configured as described above, and is capable of extremely accurately and easily revealing a complicated and fibrous touched brush character or mark on a metal surface. It has become possible to manufacture the work which has conventionally required a considerable amount of time by manual work or grinding work in a short time, with high efficiency and high quality.

[Brief description of drawings]

FIG. 1 is a scripture of the Hanju Sutra.

[Figure 2] Negative (or positive) photo of a part of the sutra
It is a film.

FIG. 3 is an explanatory view showing a state in which the negative film is printed on a photosensitive resin plate with the letters placed in the opposite direction.

FIG. 4 is a state diagram after the above-mentioned water treatment after baking is performed.

FIG. 5 is a diagram showing a wax mold being produced.

FIG. 6 is a perspective view of the produced wax pattern.

FIG. 7 is an explanatory view of a state in which the wax pattern is slurry-coated.

FIG. 8 is a perspective view of a coating die.

FIG. 9 is a product perspective view.

[Explanation of symbols]

 1a Sutra 2 Negative (or positive) film 3 Photosensitive resin plate 4 Frame 5 Wax 6 Wax type 10 Coating type 11 Products

Claims (1)

[Claims] 1. A negative (or positive) film original, on which letters and marks are photographed, is printed on a photosensitive resin plate in the reverse position and baked, and then water treated to form letters and marks on the plate surface. Create a wax mold that forms a concavo-convex pattern such as, and then forms a mold frame to surround this and pours wax, and when solidified, removes the mold frame and forms a concavo-convex pattern such as letters and marks on the surface. Then, the wax mold is immersed in a slurry liquid and slurry coating for applying ceramic powder is performed an appropriate number of times to form a coating mold having an appropriate meat pressure.
The coating die is heated for dewaxing, and then a fired mold is prepared, and molten metal is poured into the mold cavity to manufacture the metal mold, and uneven characters and marks are formed on the surface of the metal plate. Method.