JPH0119276B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an improvement to a method for manufacturing a decorative panel for an audio cabinet, in particular, by making it easier to print a silk screen on the front surface of the panel, and eliminating the need for a painting process. It is related to.

For example, on the front surface of the cabinet of audio products such as audio power-ups, cassette decks, and tuners, necessary letters, numbers, and display symbols are printed in advance by silk screen printing near the operating knobs or meters.

When printing display symbols using silkscreen printing, if printed on the front side, there is a risk that the surface will be rubbed and the display characters will disappear when the operation knob is operated, so do not use such decorations. The silk printing method for the panel is to print upside down on the back side of the other side, and for the decorative panel itself, transparent resin such as acrylic resin is used, and the printed characters can be seen from the outside through the resin layer. That's what I do.

Therefore, in order to form the necessary characters by such printing, after printing the above-mentioned symbols on the back side of the transparent resin plate, solid printing is performed from the back side of the printed part, and the transparent part is printed. It is covered with a predetermined color.

However, the problem here is that, first of all, if the decorative panel is flat, silk screen printing will not cause any problems;
Decorative panels are generally made of transparent resin that has a top plate, base plate, and front plate integrated into a roughly U-shaped cross section. Since the board and main plate become obstacles when printing on silkscreens, a special frame must be provided to perform silkscreen printing through this special frame, and the printing position must be adjusted accordingly. is limited only to the central portion, making it extremely difficult to print on the periphery.

Furthermore, after printing the character silk printing in this way, solid silk printing of the opposite color is applied to cover the transparent acrylic surface with the solid silk, but for the same reason as above. Since the periphery of the solid silk surface also becomes blurred, especially the vertical part is not printed at all, so after masking the periphery of the printed surface and the opening for mounting the panel operation knob and meter, It is necessary to apply the same paint color as the solid silk color, which is extremely troublesome, and there is also a risk that the paint color and the solid print color will be different.

Therefore, it has been pointed out that there are disadvantages in manufacturing such decorative panels, such as extremely high costs due to operations such as masking in the printing and painting processes.

This is because the paint for painting has the property of dissolving the solid silk, so such masking measures must be taken.

The method of the present invention has been developed to solve the above-mentioned drawbacks of the conventional technology. First, silk printing is performed on the front surface of the decorative panel body, and then a transparent resin layer is formed on the front surface of the decorative panel body by insert molding. By integrally providing the above-mentioned disadvantages in silk printing,
The present invention provides a method for manufacturing a decorative panel for an audio cabinet, which eliminates masking steps, painting steps, and the like.

Hereinafter, one embodiment of the present invention will be described in detail using the drawings.

1 and 2 show a decorative panel main body 1 to which the present invention is applied, which is formed by integrating a top plate portion 2, a base plate portion 3, and a front portion 4 into a substantially U-shaped cross section. The material for this product is a metal press molded body such as aluminum or a resin molded body, which can be molded by various means, and the color may vary depending on the desired color of the decorative panel, for example, a black surface. Or it is formed on a metal surface.

Openings 4a, 4a, . . . for mounting operation knobs, meters, etc. are formed in the front part 4, and the inner parts of the top plate part 2 and the bottom plate part 3 are elastically fitted into the cabinet body side. A locking pawl 5 and the like for fixing in case of fitting is integrally provided in a protruding manner.

The decorative panel main body 1 thus configured is first subjected to a silk screen printing process.
This silk screen printing method is a commonly used method, in which a silk screen 6a on which a portion to be printed is previously formed is stretched inside a frame plate 6, and ink is supplied to the top surface of the silk screen 6a to print on the subject surface. Printing ink is supplied through the silk screen, and in this case, necessary letters, numbers, and
Other symbols and the like are printed in an appropriate arrangement to form a printed layer 7 on the surface. (See Figure 3).

In this case, since the printing is applied to the front surface of the front part, there is no need for a special frame like in the past, and good printing is possible using a normal printing method.

Next, the printed decorative panel main body 1 is set on the lower mold of the injection mold 10 as shown in FIG. 10, transparent molten resin is injected from a runner and a gate (not shown) into the cavity formed between them, and then, after cooling, the molded product is removed from both molds, as shown in FIG. This results in a decorative panel in which the transparent resin layer 20 is integrated on the front surface of the decorative panel main body 1. Therefore, in the decorative panel constructed in this way, the letters, numbers, or other symbols are completely molded. Since the display is formed in a clear state, there is no wear and tear due to external operations, and the display remains clear and visible from the outside at any time. The base color of the decorative panel body 1 should be the opposite color to the color of the silk-printed letters, numbers, etc., or if the material itself is a metal such as aluminum, the color scheme should take advantage of the color of the material. becomes possible.

As explained in detail in the embodiments above, in the method of manufacturing a decorative panel for an audio cabinet according to the present invention, necessary letters, numbers, and other symbols are appropriately arranged on the front surface of the decorative panel body by silk screen printing. After printing, a transparent resin layer is integrated on the front side by insert molding and the printed part is molded, so silk screen printing is performed from the back side as in the conventional method, and the cover Compared to the method of painting the printed part, silk printing is extremely simple, and since the color of the decorative panel itself is used as the base color of the decorative panel instead of painting, painting can be eliminated, and masking associated with this can be eliminated. It has the advantage that the number of man-hours can be reduced, and there is no difference in color between the printed part and the painted part, resulting in an extremely good product in terms of both the number of man-hours and the appearance.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a decorative panel main body used in this invention, Fig. 2 is a sectional view of the decorative panel main body,
Fig. 3 is a cross-sectional view for explaining the printing process for the decorative panel body, Fig. 4 is a cross-sectional view for explaining the state set in the injection mold, and Fig. 5 is a completed perspective view of the decorative panel. be. DESCRIPTION OF SYMBOLS 1... Decorative panel main body, 2... Top plate, 3... Base plate, 4... Front part, 4a... Opening, 7... Printing layer, 20... Transparent resin layer.

Claims (1)

[Claims] 1. The front surface of the decorative panel main body, which is formed into a generally U-shaped cross section by integrating the top plate, base plate, and front part, and has openings for mounting operation knobs, meters, etc. formed in the front part by appropriate arrangement. Then, silk screen printing is used to print necessary letters, numbers, and other symbols in an appropriate arrangement, and then this decorative panel body is set in an injection mold, and a transparent resin layer is integrally formed on at least the front surface of the decorative panel body. A method for manufacturing a decorative panel for an audio cabinet, characterized in that the decorative panel is molded.