JPH088094Y2 - Molding die for decorative plate with synthetic resin decorative edge material on the periphery of the substrate - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative plate molding die having a decorative edge material made of synthetic resin on the periphery of a substrate.

[0002]

2. Description of the Related Art Heretofore, a mold shown in FIG. 5 has been known as a molding die of this type. That is, the substrate 2 has a concave mold 11 that is housed so as to form a cavity 12 on the entire circumference thereof, and a closing mold 13 that closes the concave mold 11. It is known that an endless groove 14 is formed in a portion contacting the peripheral edge portion, and an elastic packing 15 is fitted in the groove 14 in a partially protruding manner.

[0003]

2. Description of the Related Art A method of manufacturing a decorative plate 1 (see FIG. 1) using the conventional molding die will be described. A mold release agent is applied to the rising surface and the bottom surface (the portion which becomes the peripheral surface of the cavity 12 forming the decorative edge member 3 described later) of the inner peripheral edge of the concave mold 11. Then, the substrate 2 is housed in the concave mold 11 so that the cavity 12 is formed. Then, the concave mold 11 is closed by the closing mold 13. Along with the work, the elastic packing 15 comes into close contact with the back surface (top surface in FIG. 5) of the substrate 2. Then, the synthetic resin fluid 16 is injected into the cavity 12 through the injection port 17 formed in the closed mold 13. At this time, since the elastic packing 15 is in close contact with the back surface of the substrate 2, it is possible to prevent the synthetic resin fluid 16 from spreading over the elastic packing 15 and spreading toward the center of the back surface of the substrate 2. Then, the synthetic resin fluid 1
After hardening 6, the decorative plate 1 as shown in FIG.
Can be obtained.

[0004]

Disadvantages of the Prior Art The conventional molding die has the following drawbacks. First, since the elastic packing 15 is fitted into the groove 14 formed in the closed mold 13, the elastic packing 15 may come off the groove 14 or the elastic packing 15 may be extended if the number of times of use increases. It has a drawback that it is easily detached from the groove 14. Secondly, there is a drawback that the synthetic resin fluid 16 enters between the groove 14 and the elastic packing 15 to make it difficult to remove the mold.

[0005]

[Means for Resolving the Disadvantages] This invention adopts the following means in order to solve the above disadvantages. In this invention, an endless abutting ridge that abuts the peripheral portion of the substrate is integrally formed in the closed type.

[0006]

The function of the present invention is as follows. Since the endless abutting ridges that come into contact with the peripheral portion of the back surface of the substrate are integrally formed in the closed type, the abutting ridges do not come off the closed type.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. The same members as those described in the description of the prior art are designated by the same reference numerals. The molding die 21 has a concave die 11 in which the substrate 2 is housed so as to form a cavity 12 on its side circumference, and a closing die 22 for closing the concave die 11. The closed mold 22 is integrally formed with an endless abutting ridge 23 that abuts a peripheral portion of the back surface (the upper surface in FIG. 2) of the substrate 2. The method of using this molding die 21 is the same as the conventional method. Back side of substrate 2 (top side of FIG. 2)
If an elastic decorative sheet or the like is attached to the above, the sealing effect of the contact protrusion 23 can be enhanced.

3 and 4 show a modification of the molding die 21. As shown in these figures, an opening 25 is formed in the bottom wall of the concave mold 11 leaving an edge portion for receiving the peripheral edge portion of the substrate 2.

[0009]

The present invention has the following effects due to the above-mentioned configuration. Since the endless abutting ridges that come into contact with the peripheral edge of the substrate are integrally formed in the closed type, the abutting ridges do not come off the closed type. Since the endless abutting ridges that come into contact with the peripheral edge of the substrate are integrally formed in a closed type, unlike the conventional case, the synthetic resin fluid enters between the groove and the elastic packing, which makes it difficult to perform demolding. Nothing.

[Brief description of drawings]

FIG. 1 is a perspective view of a decorative plate manufactured by using a mold according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of the molding die of the embodiment in which it is not used and in which the intermediate portion is omitted.

FIG. 3 is a vertical cross-sectional view showing a modified example 1 of the present invention with the middle omitted.

FIG. 4 is a vertical cross-sectional view showing a modified example 2 of the present invention with intermediate parts omitted.

FIG. 5 is a vertical cross-sectional view of a conventional molding die in use.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Decorative plate 2 Substrate 3 Decorative edge material 11 Recessed mold 12 Cavity 21 Mold 22 Closed mold 23 Abutting ridge

Claims (1)

[Scope of utility model registration request] 1. A decorative plate having a synthetic resin decorative edging material on the peripheral edge of a substrate, the substrate having a concave mold for accommodating a cavity on its side periphery and a closing mold for closing the concave mold. In the mold, a mold for a decorative plate having a decorative edge material made of synthetic resin on the periphery of the substrate, wherein endless contact protrusions for contacting the peripheral portion of the substrate are integrally formed on the mold.