JP2009125078A5 - - Google Patents

Description

Game ball and engraving method by rolling into game ball

  The present invention relates to a game ball and an engraving method by rolling into a game ball, more specifically, a game ball used in a pachinko machine such as a pachinko machine in a pachinko store. Alternatively, or in place thereof, the present invention relates to a game ball having grooves formed by using a rolling engraving machine, a laser engraving machine, or the like, and an engraving method by rolling into a game ball.

  The above game balls are generally composed of highly accurate and strong metal balls, which are processed with a steel bar as a raw material, and a metal ball having a diameter of 11 mm + 3/100 to 4/100 mm is subjected to heat treatment and precision steel ball polishing. Store names are engraved by rolling with a rolling engraving machine.

  The conventional engraving on the game ball is made for the purpose of identifying the store name, and it was not assumed that the engraving would have any further role. There was enough for engraving the store name.

  Recently, however, cost savings are required for products, and the exchange rate of rental balls may vary depending on the store or the corner of the same store. Therefore, there is a demand for the appearance of products or means capable of identifying a plurality of types of game balls corresponding to the difference in exchange rate.

  Under such circumstances, the conventional game ball that performs only a single role as described above should be improved in some way, but no game ball that can meet such a request has been proposed yet.

  Of course, by lending out game balls with different engravings, depending on the store, and on the floors and corners of the same store, game balls with different exchange rates are prevented from being mixed. The determination of the replacement rate is often performed visually by a salesperson at a pachinko parlor, so in practice it is extremely difficult to identify the carving. As a result, when game balls with different exchange rates are used illegally, the pachinko parlor suffers damage.

  As described above, the present invention is made in view of the fact that it is difficult to identify the conventional game balls according to the type of engraving by visual recognition, which may hinder various operations in the game hall. Therefore, an object of the present invention is to provide a game ball that can facilitate the task of identifying a game ball corresponding to a difference in exchange rate, and a method for engraving the game ball by rolling it.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a marking region in which a groove having a V-shaped cross section is formed in a metal ball regularly or irregularly, and the groove is colored in a uniform color. It is a game ball characterized by having. For example, the groove is a continuous or discontinuous circular groove that is engraved at appropriate intervals in parallel with the equator of the metal sphere.

  In one embodiment, the width of the opening of the groove is 0.2 mm to 0.4 mm, and in another embodiment, the groove is colored with a phosphorescent paint.

  According to a fifth aspect of the present invention for solving the above problems, a marking region is formed by engraving a metal ball with a groove having a V-shaped section regularly or irregularly and coloring the groove into a uniform color. A pair of rolling dies having a curved concave surface corresponding to the diameter of the metal sphere arranged side by side on the engraving machine. The metal ball is sandwiched between them, and by moving one of the rolling dies, the metal sphere is sandwiched between the pair of rolling dies and rotated to engrave the groove. This is a method of engraving by rolling into a game ball, which is characterized by using a large one manufactured at a ratio of 1/100 to 2/100 mm for a ball having a diameter of 11 mm.

  The present invention is as described above, and in the game balls according to the present invention, for example, by identifying the corresponding balls when operating with different exchange rates, It is possible to identify the special prize ball by visual recognition when the operation is performed by mixing, and thus it is possible to implement these operation methods.

  In addition, when a plurality of game balls according to the present invention are assembled, an effect of reflection occurs due to irregularly reflected light on the surface of each sphere, and as a result, the entire sphere appears pale and colored in the color of the paint, There is an effect of further improving the discrimination.

  The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a view showing an appearance of a game ball 1 according to the present invention. The game ball 1 is formed in a spherical shape using a steel material as a general material, and a marking region 2 is formed on the peripheral surface of the sphere.

  The marking region 2 is formed by coloring a groove formed regularly or irregularly. In the illustrated example, the marking region 2 includes a plurality of elongated circumferential grooves 3 extending along the equator. In the example shown in the figure, eight circumferential grooves 3 are used, but the present invention is not limited to this.

  The game ball 1 is a sphere having a diameter of about 11 mm, for example. The circumferential groove 3 constituting the marking region 2 may be continuous over the entire circumference, or may be divided into several parts.

  In the case of being divided into two, the circular groove 3 that circulates the sphere about half way along the equator and the circular groove 3 that circulates the sphere about half way along the equator on the opposite side so as to be continuous with this at an appropriate interval. It is formed.

  When the marking area 2 is developed in a plane, the marking area 2 becomes an area having a substantially rectangular shape symmetrically formed with the equator as the longitudinal axis. Further, the width dimension of each marking region 2 is preferably about 5 mm or less if it is a sphere having a diameter of about 11 mm in a state of being developed in a plane.

  If the width dimension is set too large, it becomes difficult to form the engraving at a predetermined depth at a position away from the equator when the circumferential groove 3 is formed by rolling. This is because it is not preferable from the viewpoint of properties and the like. Moreover, in order to express the reflection effect by the irregular reflection of the spherical surface mentioned later, it is effective to leave the non-engraved part which becomes a reflective surface in the north pole part and the south pole part.

  The circumferential groove 3 is formed as a V-shaped groove on the sphere surface by rolling or laser engraving on a metal sphere. In the game ball 1 according to the present invention, for example, the circumferential groove 3 is filled with a phosphorescent paint that emits fluorescence.

  The width of the circumferential groove 3 is preferably 0.2 mm to 0.4 mm. The circumferential groove 3 in this range has a depth that does not hinder the game, can be filled with paint, and is sufficient for color development.

  As described above, the game ball 1 according to the present invention includes the marking region 2 formed by providing a plurality of elongate circumferential grooves 3 extending along the equator, for example. Each circumferential groove 3 is filled with a predetermined paint.

  As a result, the marking area 2 is a colored area. In particular, when a plurality of game balls 1 are assembled, a reflection effect due to irregularly reflected light on the surface of the sphere occurs, and the entire sphere is lightly colored. It becomes easy to identify the game ball 1, and for example, it is possible to substantially set an exchange rate difference and implement a management method using a special prize ball.

  And since the circumferential groove 3 formed in each marking region 2 is an elongated groove extending along the equator, it can be formed relatively easily by a method such as rolling or laser engraving, With respect to the game ball 1 which is a metal ball having a diameter of about 11 mm, it is possible to easily and surely engrave the many circumferential grooves 3.

  Accordingly, paint such as phosphorescent paint can be filled in the circumferential groove 3, and a pachinko parlor can be specified from the game ball 1 or can be operated with different exchange rates. As a result, it is possible to strictly manage the game ball 1 at the game stage, the cashing stage, etc., to reduce the damage of the pachinko parlor, and to improve the credit of the entire industry.

  Next, a method for forming the circumferential groove 3 by rolling the game ball 1 will be described. First, the raw steel strip is drawn to a predetermined diameter, and after forging, ball processing is performed to form metal balls.

  In the forging step, a material cut into a predetermined length with a cutting blade is forged with a press die in which a hemispherical recess is formed to form a substantially spherical shape. In the sphere processing, a roughly spherical material that has been forged is sandwiched between two processing boards, and the processing board is moved so as to draw a circle, thereby forming a metal sphere with a certain degree of roundness.

  Next, an engraving process for forming a predetermined circumferential groove 3 is performed. In the engraving process, one set of two rolling dies is set in a rolling engraving machine, a metal ball is sandwiched between them, and one rolling die is moved laterally while rotating by applying pressure to the metal ball. It is something to be made. The cutting edge of the rolling die has a V-shaped cutting edge, and a cut with a V-shaped cross section is formed on the peripheral surface of the metal ball.

  The metal ball engraved with the circumferential groove 3 is then subjected to a heat treatment to increase the hardness. However, since a method called carburizing heat treatment is adopted, a phenomenon called swelling occurs due to its nature, and 1/100 to 2 / Expands about 100 mm. This is polished by using a lapping grindstone, so that errors and sphericity are made uniform, and further adjusted to 11 mm which is the exact size by precision steel ball polishing.

  In the present invention, in these steps, a metal sphere having a diameter of 11 mm + 1/100 to 2/100 mm, which is about 2/100 mm smaller than the conventional one, is used. This is a dimensional preliminary diameter for obtaining a good gloss by fine polishing and alchemy as heat treatment.

  Thus, in the engraving method by rolling into the game ball 1 according to the present invention, the diameter of the metal sphere is made 2/100 mm smaller than the conventional method, so that the engraving after polishing than the conventional method. The width can be increased and the adjustment of the dimensions is facilitated. In addition, since the depth of the groove can be suppressed, the generation of burrs during engraving is reduced.

  Further, not only the circumferential groove 3 but also more complicated regular or irregular grooves can be formed by repeating rolling. Depending on the engraving die, the circumferential groove 3 can be engraved with vertical grooves, diagonal grooves, store names, and the like.

  Although the present invention has been described in some detail with respect to its most preferred embodiments, it will be apparent that a wide variety of different embodiments can be constructed without departing from the spirit and scope of the invention, the invention being defined by the appended claims. It is not restricted to the specific embodiment other than limiting in.

It is a figure which shows the game ball which concerns on this invention.

1 Game Ball 2 Marking Area 3 Circulating Groove

Claims (5)

Yu technique sphere and having a marking area engraved regularly or irregularly groove of V-shaped cross section in the metal ball, formed by coloring the groove into a unified color. The groove was engraved on every parallel appropriate intervals and the equator of the metal sphere, Yu Technical sphere according to claim 1, which is a continuous or discontinuous peripheral groove. The width of the opening of the groove is 0.2mm to 0.4 mm, Yu Technical sphere according to claim 1. Yu technique ball of claim 1 wherein the groove is to be colored by the phosphorescent ink. Methods for engraved grooves regularly or irregularly V-shaped cross section in the metal ball, the production of Yu technique sphere and having a marking area which is formed by coloring the groove into a unified color A pair of rolling dies in which engraving blades are arranged in parallel on the curved concave surface corresponding to the diameter of the metal sphere are set in an engraving machine, and the metal sphere is sandwiched therebetween, and one of the rolling dies is When the groove is engraved by moving the metal ball between the pair of rolling dies while moving the groove, the metal ball is 1/100 to 2/100 mm with respect to a ball having a product diameter of 11 mm. characterized in that used on a large production at a ratio, time設方method by rolling to Yu technique sphere.