JPH1094642A - Production of play panel for pachinko machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use existent facilities, to facilitate material recycle and to attain resource environment protection by forming a play panel by suitably cutting a polyethylene material formed by interposing a low-density foaming layer between high-density skin layers made of polyethylene materials. SOLUTION: A play panel 6 is composed of a single board member 26 made of polyethylene. This board member 26 made of polyethylene is formed by interposing a low-density foaming layer 28 between skin layers 27 having high density, specific gravity, bending strength and hardness. It is better to determine the ratio of thickness between these skin layer 27 and foaming layer 28 while considering the pull-out strength or the like of obstacle nails so that the specific gravity of the entire board member 26 made of polyethylene can be about 0.8+0.1g/cm<3> . Then, holes 25 for attaching respective game parts and positioning holes 31 or the like are formed. Thus, working similar to a woody panel is enabled and recycle after abandonment is enabled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a game board for a ball and ball game machine.

[0002]

2. Description of the Related Art A game board of a ball-and-ball game machine such as a pachinko machine, an arrangement ball machine and the like has a transparent makeup sheet on which a pattern is printed on a back side and a ring-shaped guide rail provided on a front side of a game board. Various game components such as obstacle nails, winning devices, and display lamps are mounted in a range surrounded by the guide rails. Conventionally, the game board for the game board includes a single board made of natural wood, a veneer board in which a plurality of veneers are laminated, or a synthetic resin board formed of a synthetic resin material.

[0003]

Game boards using a single board made of natural wood or plywood are the most frequently used hitherto because they can easily form holes for mounting various game parts and nail nails with obstacles. Had been used. However, in recent years, it has become difficult to obtain natural wood itself from the viewpoint of protecting forest resources or protecting the environment, and the production cost tends to increase accordingly. On the other hand, in the case of a synthetic resin plate, it is easy to mold with a mold device, but it is difficult to nail such as an obstacle nail, and there is a fear that the synthetic resin plate may be broken when adjusting the obstacle nail. is there. In the case of a synthetic resin plate, the overall material is the same, the wall thickness is reduced as much as possible, and necessary parts are reinforced with reinforcing ribs. However, the structure becomes complicated, and the manufacturing cost of the mold increases. There are drawbacks. In view of such conventional problems, the present invention uses a polyethylene plate material,
An object of the present invention is to provide a method of manufacturing a game board for a ball game machine, which can be manufactured easily and inexpensively with existing processing equipment, can easily recycle materials, and can contribute to protection of forest resources and protection of the environment.

[0004]

According to the present invention, a polyethylene plate material 30 having a high-density skin layer 27 on both front and back sides and a low-density foam layer 28 on the inner side is formed by using a polyethylene material. The polyethylene plate material 30 is cut into appropriate dimensions to produce a polyethylene plate material 26, and a mounting hole 25 for mounting a game component is perforated in the polyethylene plate material 26 to form a game board 6.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view of a pachinko machine showing an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a machine frame, and 2 denotes a front frame pivotally connected to the front of the machine frame 1 so as to be freely opened and closed. A glass door frame 3 and a front plate 4 are mounted on the front frame 2, and a game board 5 is detachably mounted on the rear side. The game board 5 has a rectangular game board 6. On the front of the game board 6, a guide rail 7 for guiding a game ball is provided, and a variable symbol display device 8, a lower winning device 9, a left winning device. Various game parts such as 10, 11, right winning devices 12 and 13, entrance holes 14 and 15, outer decorations 16 and 17, inner decorations 18 and 19, etc. are mounted, and a number of obstacle nails 20 are provided. I have.

[0006] An upper plate 21 is mounted on the front plate 4, and a lower plate 22 and an operation handle 24 for a firing device 23 are provided below the front frame 2.
Are provided. As shown in FIG. 2, the game board 6 is formed with mounting holes 25 respectively corresponding to various game parts such as the variable symbol display device 8 and the like. The picture is printed as appropriate so that it does not exist. It should be noted that a transparent sheet material on which a pattern is appropriately printed on the back side, or a transparent sheet material on which a paper with a pattern or the like is stuck on the back side may be attached to the front surface of the game board 6 as in the related art. . The game board 6 is constituted by a single polyethylene plate material 26. As shown in FIG. 3, the polyethylene plate 26 has a skin layer 27 having a high density and a large specific gravity, bending strength and hardness on the surface side, and a low density foam layer 28 on the inner side.

The polyethylene plate 26 has a thickness of, for example, 19
mm, and 2 to 8 mm on the surface side
The remaining about 15 to 3 mm is a foam layer 28, or of the total thickness of the polyethylene plate 26, about 1/3 on both sides is a skin layer 27, and the remaining 1/3 is a foam layer 28. Has become. Therefore, the obstacle nail 20 is driven from the front side of the game board 6 so as to straddle the skin layers 27 on both sides of the foam layer 28.
It should be noted that the numerical values of the polyethylene plate material 26 are mere examples, and the boundary between the skin layer 27 and the foam layer 28 is not clear, and is given as one guide. Therefore, the thickness ratio of the skin layer 27 and the foam layer 28 of the polyethylene plate material 26 is determined by considering the specific strength of the polyethylene plate material 26 as a whole while taking into account the pull-out strength of the obstacle nail and the like.
It is desirable to set it to about ± 0.1 g / cm ³ .

In manufacturing the game board of this embodiment,
As shown in FIG. 5, first, a long plate material 30 is formed from a polyethylene material by an extruder 29 or the like, and then the plate material 30 is cut into appropriate dimensions to obtain a substantially square polyethylene plate material. Make 26. Of course, the thickness ratio of the skin layer 27 and the foam layer 28 of the polyethylene plate material 26 is determined before forming the plate material 30 by the extruder 29 or the like, and the plate material 30 having the thickness ratio is formed. When the square polyethylene plate 26 is formed, a pattern is appropriately printed on one surface on the front side of the game board 5, and then positioning holes 31 are formed on both upper and lower sides of the polyethylene plate 26. When a picture is printed, the polyethylene plate 26 has poor printability, so it is desirable to appropriately perform a heat treatment before that.

Next, the positioning holes 31 are aligned with the positioning pins of a drilling machine such as a router, and the polyethylene plate 26 is set on the drilling machine such as a router with reference to the positioning holes 31 as shown in FIG. As described above, the attachment holes 25 having a predetermined shape are formed in the portions corresponding to the respective game components, and other necessary cutouts 32 are formed. When the game board 6 of the polyethylene plate 26 is formed, next, as shown in FIG. 4, the obstacle nail 20 is driven into a predetermined position of the polyethylene plate 26, and various game parts are mounted at the positions of the mounting holes 25. To complete one game board 5. In this way, if the game board 6 is formed using the polyethylene plate material 26, the polyethylene itself is inexpensive, so that it is very economical. In addition, the polyethylene plate material 26 is compared with other synthetic resin materials,
It is very easy to machine such as cutting, drilling, cutting, etc.
The workability at the time of production and the finish after processing are very good.

In addition, it is sufficient to simply form a hole in the polyethylene plate material 26, and it can be manufactured by the same processing as that of a conventional wood product. Not required at all. Therefore, the gaming board 5 using the polyethylene plate member 26 has an advantage that it can be implemented easily and inexpensively as compared with the conventional one made of synthetic resin. Further, since the polyethylene plate material 26 has a sandwich structure in which the foam layer 28 inside is sandwiched from both sides by the high-density skin layer 27 on the surface side, sufficient rigidity can be secured as compared with other foam materials. It is also easy to drive the obstacle nail 20 into the polyethylene plate 26. Moreover, since the surface of the polyethylene plate material 26 has a skin layer 27 having a high density and a large specific gravity, bending strength and hardness, the skin layer 27
Thereby, the pull-out resistance of the obstacle nail 20 can be increased, and the repulsive force of the obstacle nail 20 when the game ball hits the obstacle nail 20 can be appropriately secured.

The polyethylene plate 26 has a foam layer inside it.
By appropriately changing the thickness of 28, the specific gravity of the whole can be easily adjusted to about 0.8 g / cm ³ which is almost the same as that of conventional wood. In particular, polyethylene has very good abrasion resistance and impact resistance, and also has a low coefficient of friction and excellent self-lubricating properties, so that it is made of conventional wood or other synthetic resins. Damage to the board surface due to friction with game balls can be extremely reduced, and durability is significantly improved. By the way, in this example, as the polyethylene plate 26, the specific gravity is 0.8 g / c.
m ³ in and out, bending strength 90~120Kg / cm ^2, hardness is 3.6 ～4T
On / cm ² was used. However, it is not limited to this. As the polyethylene, high-density polyethylene, medium-density polyethylene, or low-density polyethylene may be used, or ultra-high-density polyethylene may be used.

Since the game board 5 uses the polyethylene plate material 26, if the ball game machine is discarded, after removing each game component, the obstacle nail 20 is removed from the polyethylene plate material 26.
And used again as a polyethylene material. In this case, since polyethylene is a thermoplastic synthetic resin, it is softened by only a slight heating.
20 can be extracted relatively easily. In addition, since polyethylene has a specific gravity smaller than that of water, if it is crushed or crushed, it can be easily separated from others by specific gravity selection using water. 6 to 8 illustrate a second embodiment of the present invention, in which a plurality of thin plate-like polyethylene plate members 26 each having a skin layer 27 and a foam layer 28 are used, and the polyethylene plate members 26 are arranged in the thickness direction. Are laminated. Each of the polyethylene plate members 26 is of the same quality, and is formed by laminating a plurality of them and crimping the four corners thereof with rivets 33 or the like.

In this embodiment, since each of the plurality of polyethylene plate members 26 has the skin layer 27 and the foam layer 28, the skin layer 27 can be distributed inside the game board 6. For this reason, the obstacle nail 20 can be securely held by the skin layers 27 as compared with the case of the first embodiment, and the pull-out resistance is further increased. The fixing of the respective polyethylene plate members 26 may be performed using screws or the like other than the rivets 33, or may be performed by bonding. Processing of the mounting hole 25 may be performed before or after laminating the polyethylene plate material 26, but processing after lamination is easier, and handling is easy.
Moreover, the finish is good.

FIGS. 9 and 10 show a third embodiment of the present invention, in which two kinds of polyethylene plates having different specific gravities, bending strengths and hardnesses, for example, the whole is constituted by a skin layer having a large specific gravity, bending strength and hardness. Polyethylene plate 26a
And a polyethylene plate 26b composed entirely of a foam layer having a small specific gravity, bending strength, and hardness.The two types of polyethylene plate 26a, 26b are alternately arranged so that the polyethylene plate 26a is on the outside. One game board 6 is formed by bonding and laminating with an adhesive 34. In this embodiment, two types of polyethylene plate 26a made of a skin layer and a polyethylene plate 26b made of a foam layer are separately made, and the two types of polyethylene plate 26a and 26b are alternately laminated. According to the combination, the specific gravity and the like of the entire game board 6 can be easily selected and determined, and the selection of the specific gravity and the like is very easy as compared with the first embodiment, and the quality can be easily made uniform. Can be. Further, since the polyethylene plate material 26a composed of the skin layer is distributed in the game board 6, the holding force of the obstacle nail 20 can be improved as in the second embodiment.

In addition, two types of polyethylene plate materials are particularly preferred.
Of 26a and 26b, polyethylene plate material 26 consisting of a skin layer
Since a is on the outside, the same advantages as those of the outermost skin layer 27 in the first and second embodiments can be obtained. It is not necessary that each of the polyethylene plate members 26a and 26b be a skin layer and a foam layer only, and a skin layer 27 and a foam layer 28 may be provided respectively similarly to the polyethylene plate member 26 of the second embodiment. . In that case, the difference in specific gravity, bending strength, and hardness of each polyethylene plate material 26a, 26b
The thickness may be appropriately determined in consideration of the thicknesses of the a and 26b or the specific gravity of the game board 6 as a whole. The polyethylene plate members 26a and 26b may be fixed with rivets or the like, but when they are adhered by bonding, high frequency bonding may be adopted. In addition, a method such as heat integral extrusion molding and heat fusion may be employed. Although the embodiments have been described above, it goes without saying that the game board 6 can be used not only for pachinko machines and arranged ball machines but also for sparrow ball game machines.

[0016]

According to the present invention, a polyethylene plate material 30 is formed using a polyethylene material, and the polyethylene plate material 30 is cut into appropriate dimensions to produce a polyethylene plate material 26. Since the game board 6 is made, it can be manufactured easily and inexpensively using existing processing equipment, and the manufacturing cost can be reduced as compared with a conventional synthetic resin manufactured using a mold apparatus. That is, since the polyethylene plate material 26 is used and its machining is very easy, the workability at the time of production and the finish after the processing are very good. In addition, it is sufficient to simply machine the polyethylene plate material 26, and it is also possible to manufacture a game board without using complicated molds and the like. Therefore, if this polyethylene plate material 26 is used, existing processing can be performed. It can be manufactured easily and inexpensively using the equipment as it is.

Further, since the sandwiched polyethylene plate 26 is used in which the inner foam layer 28 is sandwiched from both sides by the high-density skin layer 27 on the surface side, ribs and the like are not provided unlike the conventional synthetic resin. However, since sufficient rigidity can be ensured and the inside is the foam layer 28, the nail 20 can be easily driven into the polyethylene plate 26. Moreover, since the surface of the polyethylene plate material 26 has a skin layer 27 having a high density and a large specific gravity, bending strength and hardness, the skin layer 27
The resistance to pulling out the obstacle nail 20 increases, and the obstacle nail 20
The repulsive force of the tire can be secured appropriately. Further, a polyethylene plate material 26 molded from a polyethylene material is used. The polyethylene plate material 26 has very good wear resistance and impact resistance, and has a small friction coefficient and excellent self-lubricating properties. Therefore, damage to the board surface due to friction with game balls can be extremely reduced, and durability is remarkably improved, as compared with conventional wood or other synthetic resin products.

The polyethylene plate material 26 is a thermoplastic resin, and since the material after disposal is easy to recycle, there is no waste of the material, which contributes to the protection of forest resources and the protection of the environment. The game board 6 after further drilling the mounting holes 25
Since the obstacle nail 20 is driven from the front side so as to straddle the skin layers 27 on both sides of the foam layer 28, the mounting hole 25 can be easily drilled, and the obstacle nail 20 is securely supported by the skin layers 27 on both sides. it can. Extrusion molding machine using polyethylene material
Since the polyethylene plate material 30 is extruded according to 29, a long polyethylene plate material 30 can be easily formed.

[Brief description of the drawings]

FIG. 1 is a front view of a pachinko machine showing a first embodiment of the present invention.

FIG. 2 is a perspective view of a game board according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view of the game board according to the first embodiment of the present invention.

FIG. 4 is an enlarged cross-sectional view of the game board according to the first embodiment of the present invention.

FIG. 5 is an explanatory diagram of a manufacturing process showing the first embodiment of the present invention.

FIG. 6 is a perspective view of a game board according to a second embodiment of the present invention.

FIG. 7 is a sectional view of a game board according to a second embodiment of the present invention.

FIG. 8 is an enlarged sectional view of a game board according to a second embodiment of the present invention.

FIG. 9 is a sectional view of a game board according to a third embodiment of the present invention.

FIG. 10 is an enlarged sectional view of a game board showing a third embodiment of the present invention.

[Explanation of symbols]

 5 Gaming board 6 Gaming board 20 Obstacle nail 25 Mounting hole 26 Polyethylene board material 27 Skin layer 28 Foam layer 29 Extruder 30 Board material

Claims (3)

[Claims] 1. A high-density skin layer (27) is formed on both sides using a polyethylene material, and a low-density foam layer (2) is formed on the inner side.
8) each molded polyethylene plate material (30), cut the polyethylene plate material (30) to appropriate dimensions to produce a polyethylene plate material (26), this polyethylene plate material (26)
Drilling holes (25) for mounting game parts on the game board
(6) A method of manufacturing a game board for a ball game machine, which comprises: 2. The game board (6) after the mounting holes (25) are drilled.
2. The game board for a ball game machine according to claim 1, wherein obstacle nails (20) are driven from the front side so as to straddle the skin layers (27) on both sides of the foam layer (28). Production method. 3. An extruder (2) using a polyethylene material.
The method according to claim 1 or 2, wherein the polyethylene plate material (30) is formed according to (9).