JP2015208336A - Game board molding die, and game board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a game board molding die capable of molding various game boards of different outer shapes thereby to reduce the manufacturing cost of the game boards, and to mold the game board of a high quality.SOLUTION: A game board comprises a game board molding die capable of being molded by a plurality of nests 20a to 20d, in which the outer peripheral edge of a generally rectangular game board 1 is separated for the individual sides of said game board 1, there is provided guide means for moving said individual nests outward at the mold opening time so that said individual nests may separate from the outer peripheral edge of said game board at a mold opening time.

Description

  The present invention relates to a mold for injection molding a synthetic resin game board provided inside a gaming machine such as a pachinko machine, an arrangement ball, and a sparrow ball, and a game board molded by the mold. .

As is well known, the game board of the pachinko gaming machine is equipped with two guide rails for guiding a game ball to the game area on the surface, and a symbol variation display device and a prize device in the game area surrounded by the guide rails. Such game parts are arranged, and obstacle nails, windmills and the like are implanted around these game parts, thereby having a function of changing the path of the game ball falling in the game area.
By the way, plywood has been conventionally used as a material constituting the game board. However, from the viewpoint of environmental protection and design from the viewpoint that the plywood is prone to product defects due to deformation, in recent years, a game board made of synthetic resin. Are beginning to be used. The game board made of transparent synthetic resin is particularly useful because it can adopt a novel design configuration that cannot be achieved with conventional game boards made of plywood by arranging a pattern variation display device and various decorative members on the back side. .

As a method for manufacturing such a synthetic resin game board, conventionally, an extrusion molding method and an injection molding method are known, and the outer peripheral edge of the game board in the injection mold is molded. By creating a part for forming the positioning part in advance so as to be connected to the part to be played, the positioning part can be formed integrally with the outer peripheral edge of the game board at the same time, and the symbol variation display device and the game part can be attached. Since the openings for use can be formed at the same time, the number of places requiring post-processing can be reduced as compared with the extrusion molding method, and the yield is good and the mass productivity is excellent.
On the other hand, the shape of the game board differs from manufacturer to manufacturer of game machines, or even from the same game machine manufacturer, from model change to model change. In the injection molding method, a mold must be manufactured each time. Therefore, there is a problem that the cost required for the mold is high.

  In addition, in the following Patent Document 1, a die for injection-molding a game board, and a piece for forming a display window for placing a symbol variation display device, is disposed in the die so as to be replaceable. An invention is disclosed in which a different display window can be formed in the center of a game board for each type of gaming machine.

JP 2008-545 A

By the way, the outer shape of the game board differs depending on the manufacturer of the game machine. Therefore, in order to form the game board, it is conventionally necessary to manufacture a unique mold for each manufacturer, which increases the manufacturing cost. However, the invention disclosed in Patent Document 1 can only form openings having different shapes in the game board. For this reason, even if it is the injection mold shown by patent document 1, it is still necessary to manufacture a various mold for every manufacturer, and there exists a problem that manufacturing cost is not fully reduced.
In view of these problems of the game board molding die, the present invention eliminates the need to manufacture a new mold even when the outer shape of the game board to be molded is different, and the cost required for game board molding is remarkable. It is intended to be able to reduce it.

For this purpose, the game board molding die according to the present invention is configured such that a substantially square game board is formed by a plurality of inserts opposed to the entire outer peripheral edge of the game board, and each insert is formed as a mold. It is provided on a guide member provided in a mold, and each nest is moved outward in accordance with the guide member so as to be separated from the entire outer peripheral edge of the game board.
The game board molding die according to the present invention is characterized in that the inserts are detachably fixed to the guide members.
According to the present invention, in the game board molding die, the nesting is formed separately for each side of the game board.
For this reason, by exchanging the insert, it is possible to form a variety of game boards having completely different outer peripheral shapes, and the game boards can be easily released from the inserts.

Further, the present invention provides the above game board molding die, wherein the guide member guides the nests obliquely to separate the nests from the outer periphery of the game board when the mold is opened, and at the same time, a movable mold. It is characterized by being separated from the surface.
By doing so, wear due to sliding contact between the insert and the mold surface is prevented, molding defects caused by wear are prevented, and a high-quality game board can always be molded.

Further, the present invention is characterized in that, in the above game board molding die, ears extending radially outward from corners of the game board are formed between adjacent nestings.
In this way, by using the ear part molded integrally with the game board as a positioning part, secondary processing such as post-processing the game board, pasting a transfer sheet, attaching game parts, etc. In addition to facilitating handling, the game board surface can be prevented from being damaged during these processes. Note that the ear is excised if it is no longer needed.

The game board according to the present invention is a substantially square synthetic resin game board to be injection-molded, and is formed by a plurality of nestings in which all outer peripheral edges of the game board face the outer peripheral edge, Each nesting is characterized in that each outer peripheral edge is formed by the guide member moving outward and being separated from the entire outer peripheral edge of the game board.
This improves the quality of the game board.

  According to the game board molding die according to the present invention, by exchanging the insert, it is possible to mold a variety of game boards having different outer shapes, and greatly reduce the game board manufacturing cost.

The perspective view which shows an example of the game board shape | molded by the metal mold | die which concerns on this invention. The longitudinal cross-sectional view of the mold closed state of the metal mold | die which shape | molds the game board shown in FIG. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. The principal part enlarged view of FIG. The longitudinal cross-sectional view in the middle of mold opening of the metal mold | die shown in FIG. The longitudinal cross-sectional view in the middle of mold opening of the metal mold | die shown in FIG. The BB line arrow directional view of FIG. The principal part enlarged view of FIG. The longitudinal cross-sectional view at the time of ejecting the molded product of the metal mold | die shown in FIG. The perspective view which shows the other example of the game board shape | molded by the metal mold | die which concerns on this invention. The front view of the movable mold of the metal mold | die which shape | molds the game board shown in FIG. The longitudinal cross-sectional view of the mold closed state of the metal mold | die which shows the other Example of this invention. The longitudinal cross-sectional view in the middle of mold opening of the metal mold | die which shows the other Example of this invention. The longitudinal cross-sectional view at the time of the molded article ejection of the metal mold | die which shows the other Example of this invention.

  Next, a game board molding die and a game board according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 shows an example of a game board manufactured by injection molding into this mold. The game board 1 is formed into a substantially square plate shape having a thickness of about 10 mm by a transparent synthetic resin made of polycarbonate resin, ABS resin, acrylonitrile resin, etc. The front and back surfaces of the game board 1 are flat like a mirror surface. In addition, an opening 2 for attaching a large game component such as an electronic display or a center accessory is formed in the center area in a penetrating manner. The opening 2 is post-processed into a shape necessary for each model of gaming machine. In addition to the opening 2, a variable opening device for starting, a large winning opening device, a normal winning device, a large and small opening for attaching game parts such as a decoration member, and a game ball guide rail are fixed. Mounting holes and the like are formed, and these are also post-processed into a shape necessary for each model of gaming machine. Further, 3a to 3d are ear portions integrally formed so as to extend radially outward from the square portion of the game board 1, and 4a to 4d are positioning holes formed in the ear portions. Reference numeral 5 denotes a filling protrusion formed in a protruding shape in the opening 2 in order to fill the resin from the pin gate of the hot runner 16 described later. In addition, the said ear | edge parts 3a-3d and this protrusion 5 for filling are parts which will be excised if it becomes unnecessary after shaping | molding.

  As shown in FIGS. 2 to 9, the mold for molding the game board 1 is fixed to the fixed mold 11 fixed to the front surface of the fixed plate 10 of the injection molding machine, and is opposed to the fixed mold 11. The movable platen 14 is provided with a movable die 14 fixed to the front surface of the movable plate 12 via a girder member 13. In the state shown in FIG. A cavity is formed between the molds, and a molten synthetic resin is injected from the injection nozzle through a hot runner 16 formed in the fixed mold 11 through a sprue bush 15 provided on the fixed platen 10. The game board 1 is obtained by cooling and solidifying the synthetic resin. In addition, 17 is an eject plate provided on the front surface of the movable platen 12, 18 is an eject pin projecting from the eject plate so that the tip thereof faces the cavity of the game board 1, and 19 is a base end of the eject pin 18 It is a stop plate which has fixed the part on the eject plate. In this embodiment, the hot runner mold is injected through the hot runner 16. However, the present invention is not limited to this, and a cold runner mold that takes out the runner portion for each molding shot may be used. .

  As shown in FIG. 3, 20 a to 20 d are plate-like nestings that are provided separately in four for each side of the game board 1 so as to face the entire outer peripheral edge of the game board 1. Each of the inserts 20a to 20d is disposed on the mold surface 21 of the movable mold 14 so as to be slidable outward. The shape of the inner peripheral edge of each of the inserts 20a to 20d is cut out into a shape that can form the required outer shape of the game board 1 respectively. Further, both end edges of each of the inserts 20a to 20d are notched obliquely so that adjacent inserts can be matched with each other, and the ear portions 3a to 3d of the game board are formed between the inserts. It is formed in a concave shape.

  Next, a guide means for moving the inserts 20a to 20d outward as indicated by arrows in FIG. 3 when the mold is opened will be described. Reference numerals 22a to 22d denote a plurality of guide members arranged so as to be independently movable inward and outward near the outer peripheral edge of the movable die 14, and the nestings 20a to 20d are respectively connected to the guide members 22a to 22d. A number of screws 23 are detachably secured. As shown in an enlarged view in FIG. 4, the movable die 14 is formed with a slide surface 24 inclined at a minute angle α (about 5 degrees) with respect to the die surface 21, and each of the guide members 22a. ˜22d are arranged so as to be slidable on the slide surface 24. Reference numerals 27a to 27d denote angular pins protruding outward from the front surface of the fixed mold 11, and the angular pins 27a to 27d are formed obliquely on the guide members 21a to 21d. The guide holes 25a to 25d are loosely fitted. In order to prevent unnecessary movement of the inserts 20a to 20d when the mold is closed, the guide member 22a to 22d is formed with a convex portion 26, and the convex portion 26 is formed into a concave portion 28 formed on the fixed mold when the mold is closed. It fits.

  In the gaming board molding die configured as described above, the synthetic resin injected into the cavity is cooled and solidified, and the gaming board 1 is molded into the cavity, and then shown in FIGS. Thus, the movable platen 12 and the movable mold 14 are moved backward to open the mold. The angular pins 27a to 27d move the guide members 22a to 22d obliquely outward along the slide surface 24 when the movable platen 12 and the movable die 14 are retracted. For this reason, each nest | insert 20a-20d moves outward, separating from the mold surface 21, so that the clearance gap g shown with the arrow in FIG. By doing so, the friction between the nestings 20a to 20d and the mold surface 21 is minimized, and even if each nesting 20a to 20d is repeatedly moved, the frictional contact surface between the nestings 20a to 20d and the mold surface 21 is maintained. The mold surface 21 can be kept smooth for a long period of time without being worn, and there is no gap that allows the molten resin to enter. For this reason, the front surface or the back surface of the game board 1 to be molded is always kept in a mirror shape, and irregular reflection can be prevented to ensure transparency.

  Then, since a projecting rod (not shown) hits the eject plate 17 to project the eject plate 17, the eject plate 17 projects the tip of the eject pin 18 from the mold surface 21 as shown in FIG. The plate 1 is released. When the game board 1 is released in this way, the inserts 20a to 20d are already separated from the outer peripheral edge of the game board 1, so that even if the eject pin 18 protrudes, an unreasonable force is exerted on the game board 1. The mold can be released without being added, and the game board 1 can be prevented from being deformed or molded. Also, since the outer peripheral edge of the game board 1 is already free, there is no need to arrange an eject pin near the outer peripheral edge. For this reason, a good-looking game board with a beautiful appearance is formed without leaving a mark of the eject pin on the game board 1. Further, since the inserts 20a to 20d are moved outward when the mold is opened as described above, the mold can be easily released without providing a so-called draft (inclination) on the outer peripheral surface of the game board 1. . Therefore, it is possible to form the game board 1 so that the outer peripheral surface thereof is perpendicular to the front and back surfaces.

  As described above, the game board 1 formed in this way has a large and small opening for attaching a game part including the opening 2 with the positioning holes 4a to 4d formed in the ears 3a to 3d as a reference. By cutting into a shape according to the type of machine, post-processing such as cutting the game board 1, pasting a transfer sheet, attaching game parts, improving the processing accuracy, Handling becomes easy and it can prevent that a game board surface is damaged at the time of these processes. The ears 3a to 3d are excised if they are no longer needed.

  FIG. 10 illustrates a game board 1a that is intended for other gaming machine manufacturers and has a different external shape from the game board 1 shown in FIG. When the game board 1a is molded using the game board molding die, the inner peripheral shape of each of the inserts 20a to 20d matches the outer peripheral shape of the game board 1a as shown in FIG. The inserts 20e to 20h formed in advance are exchanged. For this purpose, it is possible to easily replace the screw 23 by simply removing the screw 23 and replacing it with a new insert 20e to 20h. The outer periphery of the game board 1a is formed by the inserts 20e to 20h. When the molds are opened, the guide members 22a to 22d move the nestings 20e to 20h outward, so that they can be easily released from the mold. Thus, according to this metal mold | die, the game board 1a from which an external shape differs can be shape | molded only by replacing | exchanging four nest | inserts 20a-20d with other nest | insert 20e-20h. In addition, since the ear | edge parts 3a-3d are shape | molded by adjacent nest | insert 20a-20d, the ear | edge part of a different shape can be shape | molded only by replacing | exchanging this nest | insert 20a-20d.

  Next, a second embodiment of the game board molding die according to the present invention will be described with reference to FIGS. This mold differs from the mold shown in Example 1 only in the configuration of the guide means for moving the inserts 20a to 20d outward when the mold is opened, and the other configurations are the same. Are given the same reference numerals. In the second embodiment, plate-like inserts 20a to 20d that are provided separately in four for each side of the game board 1 so as to face all the outer peripheral edges of the game board 1 are the same as in the first embodiment. The guide pins 30 are fixed to the guide members 22 a to 22 d by screws 23, and guide pins 30 are respectively provided on the back surfaces of the guide members 22 a to 22 d so as to be inclined inward, and the guide pins 30 are connected to the inner bottom portion of the movable die 14. And a long guide hole 32 is formed outwardly in the stop plate 19, and a slide shoe 31 fixed to the tip of the guide pin 30 is inserted into the guide hole 32. The slide shoe 31 is slidably brought into contact with the surface of the eject plate 17.

  In the game plate molding die thus configured, when the movable platen 12 and the movable die 14 are retracted, the eject plate 17 pushes out the eject pin 18 as shown in FIGS. The guide pin 30 moves the guide members 22a to 22d diagonally outward. Therefore, the inserts 20a to 20d fixed to the guide members 22a to 22d move outward while being separated from the mold surface 21 as in the first embodiment. For this reason, as the game board 1 is ejected, the nestings 20 a to 20 d are separated from the outer peripheral edge of the game board 1.

As described above, in this mold, each of the inserts 20a to 20d is separated from the outer peripheral edge of the game board 1 at the time of ejection, so that it is not necessary to provide an eject pin for releasing the mold on the outer peripheral part of the game board 1. . For this reason, there is no protrusion mark of the eject pin left on the outer peripheral portion of the game board 1, and a game board with a beautiful appearance can always be formed.
In addition, since the inserts 20a to 20d move outward while being spaced apart from the mold surface 21 in the same manner as in the first embodiment, the friction between the inserts 20a to 20d and the mold surface 21 is minimized and wears. As in the mold shown in the first embodiment, a high quality game board can always be formed.
And also about the metal mold | die shown in this Example 2, the various game board from which an external shape differs can be shape | molded only by replacing | exchanging each nest | insert 20a-20d.
In Example 1 and Example 2, the nesting was separated for each side of the game board (divided into four parts), but by dividing the nesting into two and making the shape of each nesting substantially L-shaped, combining the two nestings The entire outer periphery of the game board may be molded.

  Moreover, in the metal mold | die shown in Example 2, as the structure of a guide means, when the protruding rod contacts the eject plate 17, the eject plate 17 protrudes, and when the guide pin 30 is pushed by the eject plate 17, each nest 20a The guide means is structured such that the eject plate 17 is provided with an actuator (not shown) such as a hydraulic cylinder and is moved away from the movable platen 12 by operating the actuator. The eject plate 17 may push the guide pins 30 to move the inserts 20a to 20d outward.

  In addition, the transparent game board has various decorative members such as a symbol variation display device and electric decoration on the inner side, so that a player in the game can clearly see through the game board 1 and Because the light passes well, it is possible to create a novel production with a free design. However, the game board according to the present invention is not limited to a colorless and transparent synthetic resin, but can be molded from a colored transparent synthetic resin, a translucent or translucent synthetic resin, or an opaque synthetic resin.

DESCRIPTION OF SYMBOLS 1 Game board 2 Opening 3a-3d Ear | edge part 4a-4d Positioning hole 5 Filling protrusion 10 Fixed board 11 Fixed mold 12 Movable board 13 Girder member 14 Movable mold 15 Sprue bush 16 Hot runner 17 Eject board 18 Eject pin 19 Stop Plates 20a to 20d Nest 21 Mold surfaces 22a to 22d Guide member 23 Screw 24 Slide surface α Angle 25a to 25d Guide hole 26 Convex part 27a to 27d Angular pin 28 Concave part 30 Guide pin 31 Slide shoe 32 Guide hole

Claims (6)

  The substantially square game board is formed by a plurality of inserts opposed to the entire outer peripheral edge of the game board, and each insert is provided in a guide member provided in a molding die. According to the guide member, the game plate is separated from the entire outer peripheral edge by moving outward in accordance with the guide member.   2. The game board molding die according to claim 1, wherein each of the inserts is detachably fixed to the guide member.   3. The game board molding die according to claim 1, wherein the nesting is formed separately for each side of the game board.   The guide member is configured to guide each of the inserts obliquely to separate the inserts from the outer peripheral edge of the game board at the same time as the mold is opened and at the same time separate from the movable mold surface. The game board molding die described in any one of 1 to 3.   The game board molding die according to any one of claims 1 to 4, wherein ears extending radially outward from corners of the game board are formed between adjacent inserts. .   A game board made of a substantially square synthetic resin to be injection-molded, wherein the entire outer periphery of the game board is formed by a plurality of inserts opposed to the outer periphery, and the guide member moves outward in each insert. A game board characterized in that each outer peripheral edge is formed by being separated from the entire outer peripheral edge of the game board.

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