JPS5839976A - Clock dial - Google Patents

Abstract

PURPOSE:To obtain a clock dial which is high in its mass production property, and excellent in its design, by performing the same plating onto the upper surface and the side surface of a character projected from the dial by press work. CONSTITUTION:The surface of a clock dial 5 is subjected to the ground treatment such as a pattern, etc., and after that, is subjected to silver plating 6, and also, on this silver plating 6, an electric insulating film 7 is formed by a coating material. Subsequently, it is passed by a metallic die, and a character 8 is projected. A part of a side part 8c of the character 8 is projected from the dial 5 in a state that a shearing state has been added, and a side surface 8b of the character is made to expose its metallic surface. Subsequently, when the metallic surface is exposed by grinding an upper surface 8a of the character 8, the whole surface of the character is gold-plated 9 since the upper surface 8a and the side surface 8b of the character 8 are exposed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a timepiece dial plate in which letters and a projecting plate are integrally molded from a metal plate.

- Conventionally, the following books have been developed and manufactured for clock dials. Namely, (1) a printed dial plate, which is a dial plate that is printed to represent characters, and (2) a mold press dial plate, which is a type of dial plate that is stamped onto a metal plate using a corresponding mold. (3) Vegetated dial, which is manufactured by stamping with a large press of 90 to 150 tons while annealing twice or more. A dial plate manufactured by drilling a hole in the dial plate for the leg to fit into, inserting the leg into the hole, and then caulking or gluing it with adhesive. (4) Pipe range press dial plate. , this is a dial plate in which the metal plate is stamped by vibration during the press process, so that the letters are embossed on the metal plate.

The present invention is a watch dial obtained by adopting a manufacturing method completely different from these manufacturing methods. The purpose of this invention is to provide a 9-clock dial plate that can be easily mass-produced using a low-load pressing process without using a conventional method, and has an excellent design.

The dial plate is characterized by an integrated dial plate in which the letters are made to protrude by plastic processing that takes into account shearing conditions, and the same plating is applied to the top and side surfaces of the letters.

The present invention will be explained below with reference to Examples.

The dial plate 1 is a metal plate, and is integrally provided with the characters 2F1 and the dial plate 1 in a protruding manner. The letter 2 has the same plating 3 applied to its top and side surfaces. The dial plate 1 is plated 4 and the Kobetsu girder is plated. The examples shown in FIGS. 2 and 5 have different cross-sectional shapes depending on the mold used to project the characters, but they were completed using the same manufacturing method.

These watch dials are completed through the following manufacturing process, and an electrically insulating coating 7 made of paint is applied on top of the silver plating 6 (FIG. 4A). Next, press this with a mold,
Make the letter 8 stand out. A part of the side part 8c of the character 8 protrudes from the dial plate 5 in a sheared state, and at this time, the insulating coating 7 is destroyed on the side face of the character 8, and the metal surface of the side face 8b of the character is exposed. (Figure 4, Figure B). Next, the top surface of letter 8 8&
Grind and expose the gold surface (Figure 4, Figure C). When this dial plate 8 is fully plated 9, the upper surface 8a and side surface 8b of the character 8 are exposed, so is this surface, that is, the entire surface of the character fully plated? (Figure 4, Figure D). In the above manufacturing process, the dial 5
The clock dial plate 6 is completed, with the characters 8 and 8 being fully plated 9 with silver plating 6 and 9, respectively.

In addition to the above-mentioned folding plate, the letters may be plated with other metals such as chromium, nickel, gold, rhodium, etc., and the dial plate may be plated with gold, rhodium, nickel-chromium, or the like.

In addition, in the manufacturing process, 5 to 5
It was completed using a small press machine called ton. This is to complete the clock dial of the present invention! l! tK
This is because a newly developed mold design method is used to mold part of the side part of the entire university in a state of shearing from the dial, while at the same time stretching a part of the dial material and extruding the material into the character part. It is. Furthermore, the width of character 2 could be made less than α6■.

The main difference between the watch dial plate of the present invention and conventional products is that the same plating is applied to the top and side surfaces of the letters, that is, the entire surface of the letters. Can be changed. In the case of conventional mold press dial plates, vibrate press dial plates, and Y press dial plates in which the letters and dial plate are molded as one, it is not possible to make the letters narrow and tall, and to plate the entire surface of the letters. There wasn't.

The present invention is characterized by the above configuration, and has the following effects.

The characters can be plated on the entire top and side surfaces, have a sharp shape, and are excellent in design. (2) The press takes into account the shearing condition and partially stretches the material, so the characters are shaped like characters. It can be embossed higher than the thickness of the board, and the letters do not easily come off.

(3) A small press machine can be used, the mold can be operated for a long time without damage, it is energy-saving, and it can be mass-produced to improve efficiency.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of a clock dial according to the present invention, and FIGS. 2 and 3 are enlarged cross-sectional views of character portions, each showing a different shape. FIG. 4 is a cross-sectional view of the watch dial during the manufacturing process. 1.5...Dial board, 2.8...Character, 3.9...
Plating patent applicant: Umeda Watch Crafts Co., Ltd. No. 40 -439-

Claims (1)

[Claims] In the process of making the letters protrude from the dial using press working, the side parts of the letters and the dial are made to protrude by plastic working that takes into account shearing conditions, and the upper and side surfaces of the letters are plated with the same material. A watch dial featuring an integrated character dial.