JP4550310B2 - Method and apparatus for removing obstacle nail - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an extraction method for extracting an obstacle nail planted on a game board of a pachinko machine and an apparatus for separating a game board used for the extraction.
[0002]
[Prior art]
As is well known, in the game board of a pachinko machine, there are usually several hundred dozens of obstacle nails. When this game board has been used and discarded, or when it is recycled for resource recovery, the problem is the removal of obstacle nails that are concentrated in the game area.
As described above, more than 200 obstacle nails are driven into the game board, but these nails are driven deep in order to stabilize, and a spiral groove is usually provided on the shaft portion for driving in. It is formed and is more difficult to pull out.
[0003]
Therefore, in the case of pulling out one by one, there is no problem even if the retaining is applied in this way. However, for the sake of efficiency, if you try to pull out many at once, the burden will be extremely large and easy. It ’s not something.
For this reason, there is a need for a proposal of an efficient extraction method or apparatus. However, there is no provision of an extraction method or apparatus that can be adequately adapted to this, so that the used game board is disposed of and recycled. Is a major obstacle.
[0004]
[Problems to be solved by the invention]
In view of the above circumstances, the present invention intends to provide a method for efficiently removing a faulty nail from a used game board and an apparatus for carrying out this method.
As described above, the obstacle nails to be implanted in the game board usually have a spiral groove formed in the shaft portion for retaining, and exhibit a great resistance when pulling out, while the game board has a specific range of game areas. Since it is planted intensively and is in a dense state, it is difficult to extract it.
[0005]
In particular, in view of such a situation, the present invention focuses on the game board in which the obstacle nail is implanted, not by removing the obstacle nail one by one, and disassembles the game board to dispose the obstacle nail. An object of the present invention is to provide a game board separation device effective for carrying out this method while destroying the state and trying to remove the obstacle nail from the game board.
[0006]
[Means for Solving the Problems]
In other words, the present invention has been made to achieve the above-mentioned object, and the feature thereof is that a game board in which an obstacle nail is implanted in the game area is fixed, and the edge of the edge is parallel to the board surface. Cutting the cutting blade from the direction to divide the game board into the front and back side plate parts, exposing the driving shaft part of the obstacle nail remaining on the surface side plate part, thereby reducing the obstacle holding force of the obstacle nail An object of the present invention is to provide a method for extracting a faulty nail, which is characterized in that it can be removed by being lost.
[0007]
In the present invention, the cutting blade is cut again into the edge side edge of the surface side plate portion divided by the cutting blade, and the surface side plate portion is divided to expand the exposed area of the driving shaft portion of the obstacle nail and increase the driving holding force. It is another object of the present invention to provide a method for extracting obstacle nails characterized by further reduction.
[0008]
It is another object of the present invention to provide a method for extracting a faulty nail, wherein the cutting blade is cut and cut from the opposite two edge end face of the game board.
[0009]
Further, the present invention relates to the removal of the obstacle nail, wherein the cutting blade cuts the game board by cutting a blade edge from the edge of the game board toward the non-planting area avoiding the obstacle nail planting area. It is to provide a method.
[0010]
Still further, the present invention provides a mounting table for supporting the game board at a fixed position, a fixing means for fixing the game board at a fixed position of the mounting table, and an edge end face of the gaming board fixed by the fixing means. Another object of the present invention is to provide a game board cutting device comprising cutting means for cutting the game board into a front side plate portion and a back side plate portion by cutting a cutting blade in parallel with the board surface.
[0011]
Further, according to the present invention, the fixing means has a pair of opposing clamping members, and the clamping members are brought into contact with the opposing two edge mouthpiece surfaces of the game board and clamped and fixed at a fixed position on the mounting table. An object of the present invention is to provide a game board dividing device characterized by the above.
[0012]
Further, according to the present invention, the cutting means has a pair of cutting blades facing each other, and the cutting blades are respectively opposed to the opposite two edge end surfaces of the game board where the clamping member does not contact from the direction parallel to the board surface. It is an object of the present invention to provide a game board dividing device characterized by cutting and dividing the game board into a front side plate part and a back side plate part.
[0013]
According to the present invention, the cutting blade is formed in a forked shape by aligning the cutting edge in the length direction of the edge mouthpiece surface of the game board and providing a missing portion in the center portion of the cutting edge to separate the gaming board. Another object of the present invention is to provide a game board cutting device characterized in that the cutting edge is prevented from entering the obstacle nail planting area.
Next, the present invention will be described in detail based on the illustrated embodiment, and the features thereof will be clarified.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
The drawings show one embodiment of the present invention. FIG. 1 is a schematic explanatory perspective view of a main part of a used game board separating device for carrying out the method of the present invention. FIG. 2 shows a game board, means for fixing the game board, It is a schematic explanation perspective view explaining the positional relationship of the cutting means which cuts a game board.
[0015]
In the drawing, 1 indicates a used game board. This game board 1 uses a laminated plywood as a main body. Here, a laminated board of approximately 1.5 mm thick, which is generally used, is used, and a synthetic resin decorative sheet is pasted on the surface. The obstacle nail 3 is planted through this sheet. In the present invention, the used game board includes a batting guide rail, and a game board in which a winning device is fixed.
[0016]
Reference numeral 2 denotes a separating device that separates the game board 1 and exposes the shaft portion 3a of the obstacle nail 3 implanted in the game board to destroy the implanted state. Reference numerals 4 and 4 denote a pair of clamping members that serve as fixing means for fixing the game board in a fixed position when the game board is cut, and reference numerals 5 and 5 denote cutting blades that serve as cutting means for cutting the game board. Reference numeral 6 denotes a belt conveyor for carrying the used game board 1 into the game board cutting position of the sorting device 2, and 7 denotes a belt conveyor for carrying out the cut and disassembled board portion of the game board 1.
[0017]
In the method of extracting the obstacle nail according to the present invention, the used game board 1 in which the obstacle nail 3 is planted is divided into a front side plate portion 1a and a back side plate portion 1b of the game board so as to divide the plate thickness, and the back side plate portion 1b is separated. The shaft portion 3a of the obstacle nail 3 that has been driven into it is exposed by detaching, and the holding force of the obstacle nail 3 remaining on the surface side plate portion is reduced and lost, thereby dropping off the obstacle nail 3 remaining on the surface side plate portion It is in the extraction method that is guided and removed.
[0018]
The cutting device 2 is a device for carrying out the method of the present invention, and substantially cuts the game board 1 into a front side plate portion 1a and a back side plate portion 1b along the plate thickness.
The belt conveyor 6 is a means for feeding the used game board 1 to the cutting position of the device 2, and a belt 6a is stretched horizontally through a fixed base 8 formed in a box shape, and placed on the upper surface band thereof. 1 can be sent to the central position where the mounting table 9 waits by operating the belt.
[0019]
On the other hand, the belt conveyor 7 is stretched horizontally through a belt 7a in a box 10 which is also a box-shaped extension line on the belt conveyor 6, and the board portion of the game board 1 to be cut and disassembled as will be described later. It is designed to be carried out on a band.
Both the belt conveyors 6 and 7 are stretched around the rotating rollers 11 and 12, and one belt conveyor 6 is brought into the carrying-in direction and the other belt conveyor 7 is brought into the carrying-out direction by the driving means of one of the rollers (not shown). It is designed to be rotated.
[0020]
The two fixing bases 8 and 10 through which the belt conveyors 6 and 7 pass are opposed to each other with a gap therebetween, and channel-shaped guide frames 13 and 13 for guiding the clamping members 4 and 4 are provided on the upper surface thereof, The guide frame is used as a guide to support the two holding members 4 and 4 so that they can slide freely in the forward direction and the backward direction in which they are separated. In addition, hydraulic cylinders 14 and 14 for sliding operation are provided on the rear sides of the clamping members 4 and 4 and are connected to the clamping members via rods 15 and 15, respectively, so as to move forward and backward. is there.
[0021]
The sandwiching members 4 and 4 are formed of a slightly thick plate-shaped steel material, and the end surface portions 4a and 4a facing each other are formed in a horizontally long shape in accordance with the length of the top and bottom of the game board 1. It is. The end face portion 4a is provided with protruding teeth 16 extending along the length direction so that the end face portion 4a can be engaged with the end face of the game board 1.
[0022]
On the other hand, the cutting blades 5 and 5 for cutting the game board are provided so as to face each other and are located on a straight line orthogonal to a straight line connecting the pair of sandwiching members 4 and 4 so as to face each other. In this case, the two cutting blades 5 and 5 are installed on the upper surfaces of the elevators 17 and 17 so that they can be moved up and down by the vertical movement of the elevators.
[0023]
The lifting platform 17 is supported by four legs 18 that slide and expand and contract, and a rod 21 of a hydraulic cylinder 20 that stands up from a seat 19 so that its height can be changed, and a channel-shaped guide frame 22 provided on the upper surface. The cutting blade 5 is held.
[0024]
The cutting blade 5 is connected to a rod 24 of a hydraulic cylinder 23 provided at the rear, and the guide frame 22 is moved forward and backward by the expansion and contraction operation of the hydraulic cylinder 23 so that it can be cut into the front end of the game board 1. is there.
[0025]
The cutting blade 5 is formed of a slightly thick plate-like steel material like the sandwiching members 4, 4, and one side where the cutting blade is formed, that is, the tip edge serving as the cutting edge 5 a is a side edge of the game board 1. The length is almost the same length.
The cutting blade 5 shown here has a cutting edge 5a aligned with the upper surface, and the lower portion thereof is cut off, and an inclined surface 5b is provided to form a single-edged shape. Further, the central portion of the cutting edge 5a is cut into an arc shape. It is formed in a bifurcated shape.
[0026]
When the game board 1 is carved out as described later, the missing portion 25 that forms the blade edge 5a in a bifurcated manner avoids the penetration of the blade edge 5a into the game area 26 where the obstacle nails 3 are intensively implanted, and the axis of the obstacle nails This is a means for avoiding a direct collision with the portion 3a, and here, in order to avoid the obstacle nail 3 implanted in the game area 26 formed in a circular shape, each has a semicircular shape as shown in the figure. It is formed as follows.
[0027]
Next, the separating apparatus 2 according to the above configuration will be described in detail according to an actual work procedure.
FIG. 6 and FIG. 7 are schematic explanatory views showing the steps from bringing the game board 1 into the apparatus 2 by the carrying-in belt conveyor 6 and then fixing the game board 1 to cutting it for separation.
[0028]
FIG. 6 shows a state in which the game board 1 fed by the carry-in belt conveyor 6 is placed on the stage 9 waiting in front of the game board 1, and the stage 9 receives the rod 21 of the hydraulic cylinder 20 to receive the game board 1. To align the upper surface with the upper surface band of the belt 6a.
As described above, the table 9 is located in the middle of the two clamping members 4 and 4 and is located in the middle of the two cutting blades 5 and 5, and after receiving the game board 1, the cylinder 20 As a result of this operation, the clamping members 4 and 4 and the cutting blades 5 and 5 are lifted up to the upper part.
[0029]
FIG. 7 shows a state of being guided to the cutting position by this raising operation.
When the mounting table 9 reaches the raised position, the rod 21 is stopped and fixed, and then the hydraulic cylinders 14 and 14 of the clamping members 4 and 4 are operated to advance, and the teeth 16 and 16 thereof are moved to the game board 1. The end surface portions 4a and 4a are pressed and sandwiched between the end surfaces 27 and 27 while being bitten.
[0030]
The front ends 27 and 27 of the game board 1 facing the holding members 4 and 4 are the upper and lower edges of the parallel game boards, and the teeth 16 and 16 are arranged on the front end as shown in FIG. The game board 1 is firmly clamped and fixed.
After that, the cutting blades 5 and 5 that have been retracted and waited are extended by the operation of the hydraulic cylinders 23 and 23 so that the rods 24 are extended and advanced toward the end surfaces 28 and 28 on both side edges of the game board 1.
[0031]
The cutting positions of the cutting edges 5a and 5a of the cutting blades 5 and 5 are as follows from the position where the clamping members 4 and 4 fix the game board 1 as shown in FIG. 7, more specifically the position where the teeth 16 and 16 are engaged. It is set to the bottom, so that the part below the fixed position, that is, the board part 1b on the back side of the game board 1 is peeled off leaving the board part 1a on the front side as the cutting edges 5a and 5a enter. It is done.
[0032]
8 and 9 show the above relationship, and the top and bottom edges 27 and 27 of the game board 1 are sandwiched and fixed by the sandwiching members 4 and 4 (FIG. 8), and then left and right. When the cutting blades 5 and 5 are advanced toward the side edges and the cutting edges 5a and 5a are cut into the end surfaces 28 and 28 (FIG. 9), both the cutting blades 5 and 5 enter the middle of the game board 1 together. Thus, the plate portions 1a and 1b on the front surface side and the back surface side are separated.
[0033]
At this time, since the cutting blade 5 has a cutting edge 5a formed in a single-edged shape, along with the intrusion, the cutting surface is pushed open by the inclined surface 5b and the rear surface side plate portion 1b is pushed downward to advance the cutting. Become.
At the same time, since the cutting edge 5a is formed in a bifurcated manner, it penetrates into two places along the upper and lower edges of the game board 1 and cuts away from the obstacle nails 3 implanted in the game area 26. (See FIG. 9).
[0034]
In this case, since most of the game boards 1 are formed of laminated plywood, when the cutting blade 5 enters from the end surface, the cutting surface 5 is separated and easily separated, and at the same time, an inclined surface formed on the blade edge Since 5b induces this, the separation proceeds more easily and quickly.
[0035]
Of course, for this reason, it is easier to implement the present invention by previously cutting the game board into an appropriate position or inserting a layer that is easy to peel off and cutting through this layer during the cutting. Needless to say.
[0036]
While the cutting by the cutting blades 5 and 5 is performed, the mounting table 9 is lowered, waits for the lower side plate portion 1b of the game board to be cut, and receives this when the cutting is completed. Then, it is lowered to a level of 7, then transferred to the carry-out conveyor 7 and sent out of the apparatus.
FIGS. 11 and 12 illustrate this state. The uncut surface-side plate portion 1a is held by the holding members 4 and 4. FIG.
[0037]
FIG. 4 shows the cut surface side plate portion 1a. The obstacle nail 3 planted by cutting off the back surface side plate portion 1b exposes the shaft portion 3a, and decreases and loses the holding force with respect to the front surface side plate portion 1a and thus the game board 1.
The game board may be separated once as described above. However, in order to further lose the holding power of the obstacle nail, the remaining surface side plate portion 1a may be separated again. .
[0038]
The number of times of cutting may be selected in consideration of the structure and strength of the game board, the holding power of the obstacle nail, etc., and the back side is gradually cut off based on the surface side plate portion 1a. What is necessary is just to obtain | require the relationship which the coupling | bonding relationship between the surface side board part 1a with which this remains and this obstruction nail 3 becomes the smallest.
[0039]
FIG. 5 shows that after the shaft portion 3a of the obstacle nail is exposed by the above-described cutting, the surface side plate portion 1a is further divided into two, and the shaft portion 3a of the obstacle nail is hooked on the two plate portions 29 and 30. In this state, the plate portions 29 and 30 are horizontally moved in different directions, and the shaft portion 3a penetrating the plate portions 29 and 30 is shaken to enlarge the driving hole diameter, that is, the nail hole, so that the obstacle nail can be easily removed. It shows the case of doing.
[0040]
FIG. 10 shows a case where the above operation is performed by the holding members 4 and 4 and the cutting blades 5 and 5.
When the front plate portion 1a is cut into the plate portions 29 and 30, the upper plate portion 29 is held between the holding members 4 and 4, and the lower plate portion 30 is pushed down by the cutting blades 5 and 5, In this state, the holding members 4 and 4 and the cutting blades 5 and 5 are finely expanded and contracted by synchronizing the hydraulic cylinders 14 and 14 and 23 and 23, respectively. The nail hole is expanded by moving horizontally in the direction.
[0041]
FIG. 13 shows that after separating the front side plate portion 1a and the back side plate portion 1b, the front side plate portion 1a with the obstacle nail 3 left is continuously held by the sandwiching members 4 and 4, and in this state, the back side plate portion 1b is held. The state where the discharged mounting table 9 is raised again and its upper surface is brought into contact with the tip of the shaft portion 3a of the obstacle nail 3 protruding from the lower surface of the front surface side plate portion 1a is described.
[0042]
FIG. 14 shows that the obstacle nail 3 pushed up from the surface side plate portion 1a by the abutment is lifted, and thereafter the clamping members 4 and 4 are released and received on the mounting table 9, and then the mounting table 9 is lowered. The state where the conveyor conveyors 6 and 7 are aligned is shown.
[0043]
In FIG. 15, after carrying out the said surface side board part 1a from the cutting device 2 with the carrying-out belt conveyor 7, this board part 1a is reversed by holding | maintaining both the edge parts on the rotating hands 31 and 31 of a reversing device. The state where the obstacle nail 3 remaining on the plate portion 1a is dropped is shown.
It is effective to expand the nail hole when this is removed. At this time, if vibration is applied to the rotary hands 31 and 31 after reversal, the nail dropout is induced, and it becomes easy to come off.
[0044]
Although the present invention has been described through the work process of the carving device, the game board is cut in the thickness direction without directly pulling out the obstacle nail 3 planted in the game board 1, and the obstacle nail 3 is cut through this carving. The shank 3a is exposed, thereby reducing the holding force (locking force) with respect to the game board, and losing it to make it easy to fall off, thereby separating the game board and the obstacle nail, and pulling out one by one Compared to the case, it is possible to remove the obstacle nail more efficiently.
[0045]
In addition, in this separation work, regardless of the position and number of individual obstacle nails planted, all the nails implanted in the game board are broken and separated, resulting in the removal of the obstacle nails. Therefore, it can be performed on almost all used game boards without being affected by the difference in models.
[0046]
By the way, the structure which provides the missing part 25 in the center part of the blade edge 5a for the cutting blades 5 and 5 which divide the game board 1 into the front surface side and the back surface side and prevents the blade edge from entering the planting area of the obstacle nail 3 when cutting. Therefore, there is no damage to the blade edge due to the collision with the obstacle nail, and the failure due to this can be effectively avoided.
[0047]
Note that the width of the blade edge 5a is narrower than the distance between the teeth 16 and 16 to be pinched so that the teeth 16 of the clamping member 4 inserted into the face of the end of the cutting and the cutting edge 5a of the cutting blade 5 entering the cut do not collide. Needless to say to set.
Further, in order to assist in the cutting, the cutting blade 5 is provided with a protruding blade 32 in the direction of the blade edge from the center of the missing portion 25 as shown by a two-dot chain line in FIG. It may be inserted toward the center of 26 to guide the separation.
[0048]
【The invention's effect】
As described above, according to the method of the present invention, the gaming board is cut in the plate thickness direction to expose the shaft portion of the obstacle nail planted from the surface side, whereby the locking force of the obstacle nail to the game board is maintained and retained. Because it is configured to drop off from the surface side plate part that is ultimately cut off by reducing and losing force, it is possible to remove all obstacle nails from the game board at once without having to remove one by one it can.
Therefore, when the used game board is discarded or recycled for resource recovery, the wooden board portion of the game board material and the metallic material of the obstacle nail can be easily separated and processed.
[0049]
In the above processing, in the case of the present invention, the game board and the obstacle nail are not collected as they are for reuse, so the original form is stopped by disassembling the game board or bending the obstacle nail. There is no problem at all.
[0050]
On the other hand, according to the carving device that implements the above method, the game board is cut into two front and back surfaces by fixing the game board with the holding member and cutting the cutting blade into the front surface of the fixed game board. Since the shaft portion of the obstacle nail planted from the surface side can be exposed, the pre-treatment for removing the obstacle nail from the game board can be easily and quickly performed, and thus the used game board is discarded in large quantities. There are advantages that can be advantageously implemented in the disposal of
[0051]
The method and apparatus of the present invention is practical because it can be equally applied to almost any model regardless of the position and number of obstacle nails implanted in the game board. Therefore, there is little risk of damage and problems such as breakdowns can be minimized.
[Brief description of the drawings]
FIG. 1 is a partially cutaway perspective view for explaining an outline of a game board separating apparatus according to the present invention.
FIG. 2 is a schematic explanatory perspective view illustrating a relationship between a holding member and a cutting blade with respect to a game board.
FIG. 3 is an enlarged cross-sectional view of a portion for explaining a clamping state of a clamping member with respect to a game board.
FIG. 4 is a partially enlarged cross-sectional view of the front surface side plate portion in a state where the back surface side plate portion of the game board is cut off and the shaft portion of the obstacle nail is exposed.
FIG. 5 is an enlarged cross-sectional view for explaining a state in which the nail hole is expanded by shaking the obstacle nail by moving the front side plate portion and the back side plate portion separated therefrom in different directions.
FIG. 6 is a schematic explanatory diagram for explaining a state in which a game board is sent via a carry-in belt conveyor onto a mounting table of the sorting device.
FIG. 7 is a schematic explanatory view showing a state in which a game board is brought between the holding members by raising the mounting table, and is held and fixed by both members.
8 is a schematic plan view illustrating the relationship between the game board, the clamping member, and the cutting blade in FIG.
FIG. 9 is a schematic plan view showing a state in which the cutting blade has been cut to divide the game board as the process proceeds from FIG. 8;
FIG. 10 shows a state in which the front side plate portion of the separated gaming board is held by a holding member, while the back side plate portion is pulled down by a cutting blade, and the shaft portion of the obstacle nail still remains on the back side plate portion. The schematic plan view explaining the process of enlarging a nail hole by reciprocatingly moving in a different horizontal direction.
11 is a schematic explanatory view showing the state of FIG. 10 from the use surface side of the apparatus.
FIG. 12 is a schematic explanatory view showing a state in which the mounting table is lowered to the level of the conveyor belt conveyor for carrying out the separated back side plate portion.
FIG. 13 is a schematic explanatory view in which the mounting table is faced under the front surface side plate portion after unloading the back surface side plate portion.
FIG. 14 is a schematic explanatory view showing a state in which the front side plate portion is received on the mounting table, the obstacle nail is lifted up, and then lowered to the level of the conveyor belt conveyor for carrying out.
FIG. 15 is a schematic explanatory view showing a state in which the front surface side plate portion is reversed after being carried out, and the obstacle nail remaining thereon is shaken off.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Game board 1a Front side board part 1b Back side board part 2 Cutting device 3 Fault nail 3a Shaft part 4 of a fault nail Clamping member 5 which is fixing means Cutting blade 5a which is cutting means 5b Blade edge 5b Inclined surface 6 Carry-in belt conveyor 7 Carry-out belt conveyor 9 Mounting bases 13 and 22 Guide frame 16 Teeth 25 of clamping member Missing portion 26 of cutting edge Game area 27 and 28 of game board

Claims (8)

The formed by implanting the nails laminated plywood used game board into a game area fixed, cut saw entering the cutting blade along a direction parallel to the board for the edge butt surface of the recreation Edition by isolate as peeling in the thickness direction the game board on the front surface side plate portion and a rear side plate portion, whereas to the remaining said nails on the surface side plate portion by the cut, peeled rear side plate portion by said cut From the used game board, the driving shaft portion of the obstacle nail is exposed in accordance with this, and thereby the driving nail holding force of the obstacle nail remaining on the surface side plate portion is reduced and lost to be dropped or removed. sampling method of nails. Nails carved by Rukoto as peeling by entering cut again the cutting blade against the edge butt surface of the surface plate section carved and rear side plate portion of the game board a surface side plate portion in the thickness direction by the cutting blade sampling method nails from used game board according to claim 1, characterized in that to reduce the implantation was allowed enlarged shaft portion exposed areas of, driving the holding force. The cutting blade of the nails from used game board according to claim 1 or 2, characterized by carving as peeling in the thickness direction by entering the cut from the second edge butt surfaces facing each of the game board Sampling method. The cutting blade is cut so that the gaming board is peeled off in the thickness direction by intruding and cutting the blade edge from the edge of the gaming board toward the non-planting area avoiding the obstacle nail planting area. 4. A method for extracting a faulty nail from a used game board according to any one of claims 1 to 3. A used game board made of laminated plywood, in which obstacle nails are implanted in the game area, is fixed, and a cutting blade is inserted into the edge of the game board along the direction parallel to the board surface. The game board is divided into a front side plate portion and a back side plate portion so as to be peeled off in the thickness direction, and the obstacle nail is left on the front side plate portion by the cutting, while the rear side plate portion is peeled off by the separation. Of the game board used for extracting the obstacle nail from the game board by exposing the driving shaft part of the board and thereby removing and removing the obstacle holding force of the obstacle nail remaining on the surface side plate part. a cut device fixed, the said isolation device the mounting table for supporting and fixing the game board in position, and securing means for securing the game board in place of the mounting table by the fixing means The edge of the game board For the end grain surface was characterized by including a cutting means to isolate the cutting edge of the cutting blade in parallel along the disk surface cuts invaded was shaped peel the game board on the surface side plate portion and the back side plate portion A device for separating used game boards. The fixing means has a pair of holding members facing each other, and the both holding members are fixed to a fixed position of the mounting table by holding and holding the holding members in contact with the opposite two edge mouthpieces of the game board. The used game board separating apparatus according to claim 5. The cutting means has a pair of cutting blades facing each other, and the cutting blades are cut into the opposite two edge mouthpiece surfaces of the game board where the holding members do not contact from each other in a direction parallel to the board surface. used game board isolating device according to claim 5 or 6 characterized by carving the game board as peeling in the thickness direction and the surface side plate portion and the back side plate. The cutting blade aligns the cutting edge in the length direction of the mouth surface of the game board, and provides a missing part in the central part of the cutting edge to form a bifurcated shape to separate the game board into the obstacle nail planting area. The used game board separating device according to any one of claims 5 to 7, characterized in that the intrusion of the blade edge is avoided.

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