JP2004180758A - Game board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent burrs from occurring when perforating a hole or the like on a game board. <P>SOLUTION: Since a resin layer 14 is formed on the back surface of the game board and the south-sea wood 12 of a surface layer is reinforced by the resin layer 14, fibers of the south-sea wood 12 formed as the surface layer are not largely torn up at the time of perforating the hole or a notch or the like by a router or the like and burrs are not caused at a cut end. Also, since just the resin layer 14 is formed on the entire back surface area of the game board 10, the problem of position deviations caused in the case of sticking a sheet member impregnated with resin is not caused, and also the defect that the back surface of the game board 10 is stripped off at the time of perforating work by the router or the like is not caused. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention belongs to the technical field of a ball game machine represented by a pachinko machine, and more particularly, to a game board mounted on a ball game machine.
[0002]
[Prior art]
The main body of a game board such as a pachinko machine is made of beech plywood, a composite plywood of beech and southern seawood, or the like, and is configured by attaching a decorative sheet (a so-called cell board) to the front of the plywood. The game board is provided with a through hole for mounting a winning device, a display device, an electric decoration, etc., and a hole or a groove for guiding a winning ball or an out ball by cutting.
[0003]
The cutting of these holes and the like is performed by a router, and the processing direction is generally a direction from the back surface to the front surface.
During the cutting by the router, there is a problem that burrs are generated on the back surface of the game board. On the front side, burrs were prevented by the adhered cell plate, and no burrs were generated.
[0004]
Burrs generated by router processing must be removed with a file or a cutter, which takes a lot of time and labor, resulting in poor work efficiency and increased manufacturing costs. A technique has been proposed to prevent the occurrence of burrs by sticking it to a router and processing it with a router (for example, Japanese Patent Application Laid-Open No. 11-216231).
[0005]
[Patent Document 1]
JP-A-11-216231 (paragraphs 0005 to 0006)
[0006]
[Problems to be solved by the invention]
However, when the resin-impregnated sheet member or the like is stuck on the back of the game board, a process of impregnating the resin into a sheet member such as paper to produce a resin-impregnated sheet is performed. A step of sticking to the board and a step of curing at least after the sheet member is stuck in order to wait for the curing of the adhesive are necessary, which causes a problem that the step becomes complicated and the cost increases. Even if the production of a resin-impregnated sheet is entrusted to a specialist in impregnation processing, purchase costs are incurred. In other words, the problem of cost increase has arisen.
[0007]
In addition, there may occur a defect such as displacement of the sheet member when the sheet member is adhered, or the sheet member may be turned up at the time of processing by a router, and improvement in this aspect has been desired.
[0008]
Means for Solving the Problems and Effects of the Invention
The game board according to claim 1 is characterized in that, in a game board made of plywood, an active energy ray-curable resin or a thermosetting resin is applied to a back surface of the game board.
If active energy ray-curable resin or thermosetting resin is applied to the back of the game board and cured, when cutting with a router, etc., the fibers of the plywood will not be greatly torn, and No burrs are generated. Therefore, there is no need to remove the burrs with a file or the like.
[0009]
Since the means of preventing burrs is only to apply and cure an active energy ray-curable resin or a thermosetting resin on the back of the game board, manufacture a resin-impregnated sheet, and attach the resin-impregnated sheet member to the game board. The work and the curing period for waiting for the adhesive to cure are all unnecessary.
[0010]
Even if a new step of applying and curing an active energy ray-curable resin or a thermosetting resin is required, the cost can be extremely low as compared with a case where a sheet member impregnated with a resin is adhered.
In addition, since the active energy ray-curable resin or thermosetting resin may be applied to the entire back surface of the game board, there is no problem of positional displacement, and there is also a problem that the back of the game board is turned up at the time of processing with a router or the like. do not do.
[0011]
That is, all the problems existing when the sheet member impregnated with the resin is adhered have been solved.
Also, when an active energy ray-curable resin or a thermosetting resin is applied and cured on the entire back surface of the game board, the cured resin layer prevents moisture absorption of the plywood, so that the warpage of the game board is well prevented. There is also an effect. Furthermore, if a cell board or the like is stuck on the front side of the game board, the cell board is present on the front side and the resin layer is present on the back side to improve the balance between the front and the back, so that this also has the effect of preventing warpage. If the game board is warped, normal games cannot be played, so the warped game board will be defective, but since this resin layer prevents warpage, the occurrence of defective products due to warpage is also well prevented. it can.
[0012]
The resin applied and cured on the back of the game board is an active energy ray-curable resin or a thermosetting resin, but in consideration of an apparatus configuration for curing, a time required for curing, etc. Active energy ray-curable resins that cure reliably in a short time (for example, in about 0.5 seconds) are excellent.
[0013]
An active energy ray-curable resin is a composition that undergoes a polymerization reaction and cures when irradiated with an active energy ray such as light (ultraviolet rays, near infrared rays) or an electron beam. For example, it is classified into an ultraviolet curable type, a near infrared curable type, an electron beam curable type, and the like. Further, according to the type of the resin, for example, it is classified into an epoxy type, a vinyl ester type, an acrylic type, and the like. Among those that have been commercialized, Showa High Polymer Co., Ltd.'s lipoxy series (for the near-infrared curing type, trade names: Lipoxy LC-3304, LC-720, etc., and also ultraviolet curing type), Hitachi Chemical Co., Ltd. There is a company Hitaloid series (UV curable type, trade name: Hitaloid 7851 etc.).
[0014]
In the present invention, it can be used irrespective of the type of curing (active energy ray) or resin, but the equipment for curing is simple and the safety measures are not strict. Photocurable resins are preferred.
A thermosetting resin is a composition that is cured by heating, and phenol-based and melamine-based are known.
[0015]
The good application amount of the active energy ray-curable resin or the thermosetting resin is not uniformly determined because it varies depending on the type of the resin and the like, but generally 20 g / m ^{2 to} 400 g / m ² is preferable.
The lower limit (20 g / m ² ) is the minimum amount of coating required to make the surface of the game board (plywood) resistant to cutting by a router or the like so as not to generate burrs. Burrs may occur. However, just below this value does not mean that burrs will occur immediately, but is a value that allows for some margin.
[0016]
On the other hand, the upper limit value (400 g / m ² ) is not inconvenient even if it exceeds this value, but even if it is applied in a larger amount, the effect is not improved (the strength is further increased) and it is not economical. This is the value set by the user.
It should be noted that the amount is not uniform depending on the type of the resin, but it is desirable to determine a suitable coating amount by an experiment or the like.
[0017]
Needless to say, the treatment for curing the applied resin is selected according to the type of resin (curing type).
There is no limitation on the method of applying the resin, and a known application method such as a brush, a roll coater, and a spray can be employed.
[0018]
The game board according to claim 2 is the game board according to claim 1, wherein a photocurable resin is used as the active energy ray-curable resin, so that the equipment for curing is simple, and safety measures are taken. Also need not be strict.
Claims 3 and 4 show good examples of the photo-curable resin, and in the game board according to claim 3, an ultraviolet curable resin is adopted as the active energy ray-curable resin. In the board, a near-infrared curable resin is employed as the active energy ray curable resin.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the present invention will be described with reference to a preferred embodiment of the present invention.
As shown in FIG. 1, the game board 10 of this embodiment is made of plywood having a beech material 11 at the center and a southern material 12 at the top and bottom, and has a lipoxy LC-3304 of Showa Polymer Co., Ltd. on one side (back side). There is provided a resin layer 14 to which (trade name) is applied and cured.
[0020]
The resin layer 14 is obtained by applying Lipoxy LC-3304 (trade name) at a rate of 150 g / m ² with a roll coater and curing it by irradiation with near-infrared rays. 12 and is integrated. The irradiation conditions of near infrared rays were in accordance with the recommended irradiation conditions of Lipoxy LC-3304 (trade name).
[0021]
As shown in FIG. 2, the game board 10 has a corner lamp 21, a lamp windmill 22, a symbol display device 23, a normal winning opening 24, a tulip-type winning opening 25, a large winning opening 26, and an out hole 27. Etc. are drilled by the router. Further, if necessary, a notch for passing the prize ball gutter, a notch or a dowel hole used when the pachinko machine is mounted on the center frame are also formed.
[0022]
The game board 10 has a resin layer 14 formed by applying and curing lipoxy LC-3304 (trade name) on the back surface thereof, and the surface of the southern ocean material 12 is reinforced by the resin layer 14. When drilling holes or cutouts, etc., the fibers of the surface of the southern seam 12 are not severely torn, and burrs are not generated at the cut by a router or the like. Therefore, it is not necessary to remove the burrs with a file or the like after the boring process.
[0023]
Even if a step of applying and curing the resin is newly required, the cost can be extremely low as compared with the case where the sheet member impregnated with the resin is adhered.
Further, since the resin layer 14 is provided on the entire back surface of the game board 10, there is no problem of misalignment that occurs when a resin-impregnated sheet member is adhered, and the game board 10 is not drilled by a router or the like. The back surface (sheet member) is not turned over.
[0024]
Since the resin layer 14 is provided on the entire back surface of the game board 10 and the back face is hardened, the resin layer 14 prevents moisture absorption of the plywood, and the cell board and the like affixed to the front side of the game board 10. The resin layer 14 has an effect of favorably preventing the game board 10 from warping. If the game board 10 is warped, a normal game cannot be performed, so that the game board 10 becomes a defective product. However, since the resin layer 14 prevents warpage, the occurrence of a defective product due to the warp can also be prevented.
[0025]
In addition, since the photocurable resin is used, the equipment for curing is simple, and safety measures are not strict.
As described above, the embodiments of the present invention have been described according to the examples. However, it is needless to say that the present invention is not limited to such examples, and can be variously implemented without departing from the gist of the present invention.
[0026]
For example, in the embodiment, plywood combining beech wood and southern seawood is used, but plywood consisting only of beech wood or plywood of only southern seawood may be used.
[Brief description of the drawings]
FIG. 1 is a schematic diagram illustrating a layer structure of a game board according to an embodiment.
FIG. 2 is a rear view of the game board of the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Game board 11 Beech wood 12 South sea wood 14 Resin layer 21-27 hole

Claims (4)

In a plywood game board,
A game board wherein an active energy ray-curable resin or a thermosetting resin is applied to a back surface of the game board. The gaming board according to claim 1,
A game board, wherein the active energy ray-curable resin is a photo-curable resin. In the game board according to claim 2,
A game board, wherein the active energy ray-curable resin is an ultraviolet-curable resin. In the game board according to claim 2,
A game board, wherein the active energy ray-curable resin is a near-infrared curable resin.

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