JP2000079199A - Method for producing game board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent generation of defect products by easily discriminating insertion directions of nails. SOLUTION: A method for producing a game board comprises the steps of: placing a decorative sheet 4 on a molding space forming portion 2b of a first mold 2; aligning a nail mounting hole 2c with a nail through hole 4a and simultaneously aligning a function forming portion 2d with a function hole 4b; inserting and mounting a shank 5a of a nail 5 into the nail mounting hole 2c through the nail through hole 4a; closing the first mold 2 and a second mold 3 to match the function forming portion 2d with a function forming portion 3c via the function hole 4b and simultaneously form a game board molding space enclosing a deformed portion 5b of the nail 5 by the molding space forming portion 2b and a molding space forming portion 3b; and filling and solidifying a game board forming material 7 in the game board molding space.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a game board having nails called game nails and obstacle nails.

[0002]

2. Description of the Related Art In a method of manufacturing a game board disclosed in Japanese Patent Application Laid-Open No. 4-250182, a decorative sheet is placed on a first mold.
After inserting the headless nail into the first type nail mounting hole from the nail through hole of the decorative sheet, the second type and the first type are closed and the game substrate molding space in which a part of the nail is included. The game substrate molding space is filled with a game substrate molding material and solidified.

[0003]

However, according to the conventional manufacturing method, since the headless nail has the shape of a hollow body having a groove formed at one end, when a large number of headless nails are mounted on the first mold, the headless nail is required. The direction of insertion of the headless nail into the mold 1 is difficult to recognize, and if the grooved one is inserted into the nail mounting hole of the first mold, the molded product will be defective.

Accordingly, an object of the present invention is to provide a method of manufacturing a game board in which the insertion direction of a nail with respect to a first mold can be easily distinguished and occurrence of defective products can be prevented.

[0005]

According to the first aspect of the present invention, a nail through hole and a functional hole are formed in a flat forming space forming portion of a first mold in which a nail mounting hole and a function forming portion are formed. The formed decorative sheet is placed, the first type nail mounting hole is aligned with the nail through hole of the decorative sheet, and the first type function forming portion is aligned with the functional hole of the decorative sheet. The shank of the nail having the deformed portion is inserted into the nail mounting hole of the first type from the nail through hole of the decorative sheet, and the second mold having the function forming portion and the concave forming space forming portion and the first mold are formed. The mold is closed and the second mold function forming section and the first mold function forming section are joined via the function hole of the decorative sheet, and the second mold forming space forming section and the first mold forming space forming. A game board forming space in which the odd-shaped part of the nail is included is formed by the part and the game board forming space is formed in the game board forming space. It is characterized by filling solidifying the molding material. According to the second aspect of the present invention, the deformed portion of the nail included in the game board forming space according to the first aspect is the second shape.
It is characterized by being in contact with the molding space forming part of the mold.
According to the third aspect of the present invention, the first mold and the second mold according to the second aspect are inverted with the mold closed, so that the deformed portion of the nail comes into contact with the molding space forming portion of the second mold. Is formed.

[0006]

1 to 4 show a first embodiment of the present invention. FIG. 1 shows a manufacturing method, and FIG. 2 shows an exploded view of a mold 1, a decorative sheet 4 and a nail 5. FIG. 3 shows the appearance of a game board 8 as a molded product, and FIG. 4 shows a cross section of a part of the molded product.

With reference to FIG. 2, the mold 1, the decorative sheet 4, and the nail 5 will be described. The mold 1 includes a first mold 2 and a second mold 3. The first mold 2 has a rectangular base 2a.
A flat molding space forming portion 2b is formed on the upper surface (a side surface of the mold for the second mold 3) of a similar shape smaller than the base 2a, and a large number of nail mounting holes 2c and function forming portions 2d are formed in the molding space forming portion 2b. And in a concave shape. In the case of the first embodiment,
The nail mounting hole 2c has an inclination angle such that the nail 5 is inserted and mounted on the game board at an angle of about 5 ° toward the upper side installed on the island of the pachinko parlor. Function forming part 2 of first mold 2
d is a center accessory attachment hole forming portion 2e, a winning opening forming portion 2
f, variable winning device mounting hole forming portion 2g, out opening forming portion 2
h.

The second mold 3 has a base 3a having the same shape as the first mold 2.
The molding space forming part 3b is formed in a concave shape having a flat upper surface of the same shape as the molding space forming part 2b of the first mold 2 on the lower surface (mold matching side surface with respect to the first mold 2). The function forming part 3c is provided in a protruding manner. Function forming unit 3c
Are a center accessory mounting hole forming portion 3d, a winning opening forming portion 3e, a variable winning device mounting hole forming portion 3f, an out opening forming portion 3g, etc., whose positions correspond to the function forming portion 2d of the first mold 2. In FIG. 2, the second mold 3 is depicted as being turned upside down by 180 degrees, and when manufacturing the game board 8, the second mold 3 in FIG. As a result, the molding space forming portion 2b and the molding space forming portion 3b are fitted, and the upper surface of the base 2a surrounding the molding space forming portion 2b and the lower surface of the base 3a surrounding the molding space forming portion 3b abut each other as a mold matching surface. The function forming unit 2d and the function forming unit 3c
Are fitted to each other. The second mold 3 has an injection hole (gate hole) 3h penetrating through the function forming portion 3c and the outside.

The decorative sheet 4 has at least a design display portion such as a design or a picture printed on the back surface of a heat-resistant sheet having the same transparency as the molding space forming portion 2b of the first mold 2 and having transparency. A nail through hole 4a corresponding to the nail mounting hole 2c of the first mold 2, a function forming portion 2d and a second
Function holes 4 corresponding to both of the function forming portions 3c in the mold 3.
b. The function holes 4b are a center accessory mounting hole forming portion 4c, a winning opening forming portion 4d, a variable winning device mounting hole forming portion 4e, an out opening forming portion 4f, and the like.

The nail 5 has a deformed portion 5b coaxially at one end of a straight rod-shaped shaft portion 5a. The deformed portion 5b is formed in a mountain shape having a bottom surface larger than the outer shape of the shaft portion 5a.

In FIG. 2, the nail mounting holes 2c of the first mold 2 and the nail through holes 4a of the decorative sheet 4 are typically smaller in number and positions than the number of nails 5 of the game board 8 shown in FIG. It is painted.

With reference to FIG. 1, a method of manufacturing the game board 8 shown in FIG. 3 using the forming die 1, the decorative sheet 4 and the nails 5 shown in FIG. 2 will be described. First, as shown in FIG.
The decorative sheet 4 is placed on the flat forming space forming portion 2b of the mold 2, and the nail mounting hole 2c of the first mold 2 and the nail through hole 4 of the decorative sheet 4 are formed.
a and the function forming portion 2d of the first mold 2
And the functional hole 4b of the decorative sheet 4 are aligned. In this case, a pin is protruded from the first mold 2 as positioning means for aligning the first mold 2 with the decorative sheet 4,
A hole may be formed in the decorative sheet 4, and these pins and the hole may be fitted. Next, as shown in FIG.
Of the first mold 2 through the nail through hole 4a of the decorative sheet 4
Into the nail mounting hole 2c. Thereafter, as shown in Fig. C, the second mold 3 and the first mold 2 are closed, and the function forming portion 2d of the first mold 2 and the function forming portion 3c of the second mold 3 are connected to the decorative sheet 4. By fitting the molding space forming part 2b of the first mold 2 and the molding space forming part 3b of the second mold 3 through the functional hole 4b of The molding space is formed by the molding space forming part 2b of the first mold 2, the molding space forming part 3b of the second mold 3, and the decorative sheet 4. In this state, the injection nozzle 6 of the injection molding machine as a game board molding machine is inserted from the outside of the second mold 3 into the injection hole 3.
After the connection, the molten game substrate molding material 7 is injected from the injection nozzle 6 to fill the game substrate molding space through the injection hole 3h. Then, after the game substrate molding material 7 is solidified, the first mold 2 and the second
The mold 3 is opened, and the solidified game substrate molding material 7 is placed in the first mold.
By releasing from the mold 2 and the second mold 3, a game board 8 as a molded product as shown in FIG. 3 can be obtained.

Referring to FIG. 3, the game board 8 formed by the manufacturing method shown in FIG. 1 will be described. In the game board 8, the surface of the game board 8 a in which the game board molding material 7 is solidified and the back surface of the decorative sheet 4 are integrally joined, and a larger number of nails 5 than the decorative sheet 4 stand, and the decorative sheet 4 and the game board 8 a The function hole 8b is formed through. The function hole 8b includes a center accessory mounting hole 8c, a winning opening 8d, a variable winning device mounting hole 8e,
Out port 8f and the like.

Referring to FIG. 4, the nail 5 of the game board 8 shown in FIG.
Will be described. The nails 5 are inclined about 5 ° toward the upper side of the game board 8 which is installed on the island of the pachinko parlor. Nail 5
Part of the shaft 5a protrudes from the decorative sheet 4, the remaining portion of the shaft 5a of the nail 5 and the deformed portion 5b are buried in the game board 8a, and the tip of the deformed portion 5b is flush with the back surface of the game board 8a. Therefore, the nail 5 is firmly fixed to the game board 8a during use of the game in the pachinko parlor. When removing the nail 5 from the game board 8 discarded as used from the pachinko parlor,
The nail 5 can be easily pulled out from the game board 8 by pushing the nail 5 from the arrow X direction.

According to the manufacturing method of this embodiment, the nail 5 has the deformed portion 5b larger than the shaft portion 5a at one end of the shaft portion 5a. The direction in which the nail 5 is inserted into the nail mounting hole 2c can be easily distinguished, and the side without the deformed portion 5b of the shaft portion 5a can be properly inserted into the nail mounting hole 2c, and the occurrence of defective products can be prevented.

FIG. 5 shows a second embodiment of the present invention.
FIGS. 1 to 3 show the shape of the first mold side end of the nail 5, and FIGS.
The figure shows the shape of the nail 5 on the side where the game board is embedded. The tip 5c in FIG. 5A is formed in a conical shape whose diameter gradually decreases toward the tip from the shaft 5b, and the truncated cone gradually decreases in diameter toward the tip from the tip 5b in FIG. The tip 5e in FIG. C forms a step with the shaft 5 to form a shaft 5b.
It is formed in a thinner rod shape. This makes it easier to insert the tip of the nail 5 into the nail mounting hole 2c (see FIG. 1). The deformed portion 5f in FIG. 5d projects in one direction from the shaft 5b, the deformed portion 5g in FIG. 5e is hemispherical, and the deformed portion 5h in FIG.
Is formed in the shape of a flange protruding in the middle of the end portion, and the deformed portion 5i in FIG. If irregularities are formed on the outer peripheral surface of the irregularly shaped portion 5i by knurling, the nail 5 is prevented from rotating.

FIG. 6 shows a manufacturing method according to a third embodiment of the present invention. In the third embodiment, the nail 5 is inserted into the nail mounting hole 2c.
Into the nail mounting hole 2i corresponding to
After the mold 3 is closed, the first mold 2 and the second mold 3 are turned upside down with the mold closed. In this state, the injection nozzle 6 of the injection molding machine as the game board molding machine is set to the second mold 3.
After being connected to the injection hole 3h from the outside, the injection substrate 6 injects the molten game substrate molding material 7 to fill the game substrate molding space through the injection hole 3h. Then, after the game substrate molding material 7 filled in the game substrate molding space is solidified, the first mold 2 and the second mold 3 are opened, and the solidified game substrate molding material 7 is removed from the first mold 2 and the second mold 2. There is a feature that the game board 8 as a molded product is obtained by releasing the mold from the second mold 3.

According to the method of the third embodiment, the nail mounting hole 2i is formed deeper than the nail mounting hole 2c, and the first mold 2 and the second mold 3 are closed as shown in FIG. When the nail 5 is deformed, the deformed portion 5b of the nail 5 is
The gap between the nail 5 and the molding space forming portion 3b of the second mold 3 absorbs the dimensional intersection of a large number of nails, so that the mold closing operation can be performed easily and appropriately. Can be. Also, as shown in Fig. D, the first mold 2 and the second mold 3 are turned upside down with the mold closed,
The nail 5 moves downward in the nail mounting hole 2i and the deformed portion 5 of the nail 5
b contacts the molding space forming portion 3b of the second mold 3. Then, the game substrate molding material 7 is filled and solidified in the game substrate molding space, so that the tip of the deformed portion 5b of the nail 5 buried in the game substrate molding material 7 has the game substrate 8a (FIG. 4) as the game substrate molding material 7. (See FIG. 2).

In each of the above embodiments, the thickness of the game board 8a is made uniform as a whole, but the inner area (the part where the nail 5 is present) surrounded by the imaginary line L in FIG. If the thickness is made other than that, a combination of a thin wall and a rib or a thin wall can save the game substrate molding material 7.

Further, when the decorative sheet 4 is formed larger than the molding space forming portion 2b of the first mold 2, when the first mold 2 and the second mold 3 are closed, the peripheral edge of the decorative sheet 4 is fixed to the first mold. 2 and the second mold 3 may be sandwiched.

If the nail penetration hole 4a of the decorative sheet 4 is formed to have a diameter equal to or slightly smaller than the diameter of the shaft portion 5a of the nail 5, the game substrate molding material 7 does not protrude to the surface side of the decorative sheet 4. , The quality reliability will be higher.

[0022]

As described above, according to the first aspect of the present invention, since the nail has a deformed portion larger than the shaft portion on the shaft portion, when the nail is mounted on the first type, the nail of the first type is mounted. The direction in which the nail is inserted into the hole can be easily distinguished, and the side without the deformed portion of the shaft can be properly inserted into the nail mounting hole, thereby preventing the occurrence of defective products. According to the invention of claim 2, when the deformed portion of the nail included in the game board forming space comes into contact with the second mold forming space forming portion, the nail is removed from the game board discarded as used by the pachinko parlor. Is removed, the shaft of the nail protruding from the game board can be pushed to the design board side of the game board and easily pulled out. According to the third aspect of the present invention, the first mold and the second mold are inverted while the molds are closed, thereby forming a configuration in which the deformed portion of the nail contacts the molding space forming portion of the second mold. When the first mold and the second mold are closed, the deformed portion of the nail is separated from the molding space forming portion of the second mold to absorb the dimension crossing of a large number of nails.

[Brief description of the drawings]

FIG. 1 is a process chart showing a manufacturing method according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a forming die, a decorative sheet, and a nail according to the first embodiment.

FIG. 3 is a perspective view showing a molded game board of the first embodiment.

FIG. 4 is a cross-sectional view of a part of the molded game board of the first embodiment.

5A to 5C are side views showing a first end of a nail type 1 side, and FIGS. 5G to 5G are side views showing a side end of a nail embedded in a game board according to a second embodiment of the present invention. FIG.

FIG. 6 is a process chart showing a manufacturing method according to a second embodiment of the present invention.

[Explanation of symbols]

 2 First mold 2b Molding space forming part 2c Nail mounting hole 2d Function forming part 3 Second mold 3b Forming space forming part 3c Function forming part 4 Decorative sheet 4a Nail through hole 4b Function hole 7 Game board molding material

Claims (3)

[Claims] 1. A first type nail mounting wherein a decorative sheet having a nail through hole and a functional hole is placed in a flat forming space forming portion of a first type having a nail mounting hole and a function forming portion formed therein. The holes are aligned with the nail through holes of the decorative sheet, and the function forming portions of the first type are aligned with the functional holes of the decorative sheet, and the shank of the nail having a large deformed portion at one end is passed through the nail of the decorative sheet. The second mold having the function forming part and the concave molding space forming part formed therein is inserted into the first type nail mounting hole from the hole, and the first mold is closed. And a first mold function forming part are joined together through a function hole of a decorative sheet, and a game board molding in which a deformed part of a nail is included by the second mold forming space forming part and the first mold forming space forming part. A space is formed, and a game substrate molding material is filled and solidified in the game substrate molding space. A method of manufacturing a technical board. 2. The method for manufacturing a game board according to claim 1, wherein the deformed portion of the nail included in the game board forming space portion comes into contact with the second mold forming space forming portion. 3. A form in which the deformed portion of the nail contacts the forming space forming portion of the second mold by inverting the first mold and the second mold while closing the mold. The manufacturing method of the game board according to the above.