KR20120039302A

KR20120039302A - Color ball for billiard and manufacturing method thereof

Info

Publication number: KR20120039302A
Application number: KR1020100100942A
Authority: KR
Inventors: 김기섭
Original assignee: 주식회사 케이알엔티
Priority date: 2010-10-15
Filing date: 2010-10-15
Publication date: 2012-04-25

Abstract

PURPOSE: A color for a billard is provided to enhance durability and facilitate manufacture of pool balls which can be classified by surface colors. CONSTITUTION: A color for a billard comprises a body portion and a core unit. The body portion is classified into a center part(20) and side parts(50). The center part is cylindrical shape and both sides are planar shapes. A circumference of the center part is curved. The center part is formed with a set single color. The core unit is formed in a molding hole which is formed in the center part. The core unit is composed of same resin as the center part. The side parts are respectively formed in both sides of the center part. 2 side parts have same shape, color, and size.

Description

Color ball for billiards and manufacturing method thereof

The present invention relates to a color ball for billiards and a method of manufacturing the same, and more particularly, to a color ball for billiards, the surface is divided into two or more colors and a manufacturing method that can be easily produced.

In general, billiard balls are balls used to play billiards. Initially, ivory was carved out, but now it is made of thermosetting resin.

Billiard balls are 2 ~ 2⅜ inch in diameter and have perfect spherical shape and symmetry, and require appropriate weight and hardness. Currently, Belgian Salzong's billiard balls, sold under the Aramis brand, account for over 80% of the world's billiard ball market.

As a kind of billiards game, the pocket ball is a game of 15 color balls on the pool table, that is, red ball and 1 water polo (white ball).

The game methods include rotation games, nine ball games, 14-1 rack games, eight ball games, bollard games, one pocket games and basic games, and rotation games, eight ball games, and nine ball games are most commonly used.

Nine-ball game is the most popular game of the pocket ball is to win the ball by using the first nine balls using 1 to 9 red balls and 1 water polo. The rotation game, which is a representative game of the pocket ball, is a game in which 1 to 15 red balls and 1 water polo are used, and balls are placed from balls 1 to 15 in order. 14-1 The rack game uses water polo and 1 red ball. Eight ball game is a game that wins when two people choose a strike ball and a jumbo ball by putting seven balls first and then put eight balls first.

To play a pocket ball, you need 1 white ball and 15 colored balls numbered 1 through 15. Billiard balls 1 to 8 are made of one color except for the numbered part, and billiard balls 9 to 15 are designed to distinguish them from billiard balls 1 to 8 It is made up of two colors (two colors).

As such, the billiard ball whose surface is divided into two or more colors has been conventionally manufactured by printing a different color on the surface, but in this case, there is a problem in that it is peeled off or worn down and the printing is difficult.

The present invention has been made to improve the above problems, and can easily manufacture the color ball for billiards whose surface is divided into two or more colors, the object is to provide a durable color ball and its manufacturing method have.

Color ball of the present invention for achieving the above object is the body portion; And a core part formed inside the body part so as to pass through the center of the body part, and both ends of which are exposed to the outside of the body part and distinguished from the body part by color.

The core part is installed in a mold provided with a cavity, and then a molding liquid is injected into the mold to form the body part integrally around the core part.

The body part is provided with a molding hole in which the core part is formed, and has a center part having a different color from the core part, and side parts formed on both sides of the center part and having a different color from the center part. .

After the center part is installed in a mold provided with a cavity, a molding liquid is injected into the mold, and a core part is formed in the molding hole, and the side parts are formed on both sides of the center part, and the core part, the center part, and the side part are integrally formed. It is characterized by.

It is characterized in that it further comprises a mark formed on at least one end of the both ends of the core portion exposed to the outside of the body portion and distinguished from the core portion.

The mark may be formed by filling a resin having a color different from that of the core part in a pattern groove formed in a pattern set on the surface of the core part.

The mark is inserted into the mounting groove formed in a predetermined depth on the surface of the core portion is characterized in that it comprises a sheet formed with a pattern of a pattern, and a cover formed on the sheet to fix the sheet to the mounting groove.

And the manufacturing method of the color ball of the present invention for achieving the above object comprises the steps of preparing a center portion having a cutting surface formed on both sides by cutting a cylindrical processing member; Processing a molding hole passing through the other end from one end of the center part and passing between both cut surfaces of the center part; Installing the center part in a mold provided with a cavity; Injecting a molding liquid having a different color from the center portion into the cavity to form a core portion in the forming hole, and forming side portions at both sides of the center portion; And separating the molded body from the mold after the molding liquid is cured.

And the method of manufacturing a color ball of the present invention for achieving the above object comprises the steps of installing a cylindrical core portion in a mold provided with a cavity; Injecting a molding liquid having a color different from that of the core into the cavity to form a body around the core; And separating the molded body from the mold after the molding liquid is cured.

And forming a mark distinct from a surface of the core part at at least one end of both ends of the core part exposed to the outside of the molded body.

The mark is formed by forming a pattern groove set on the surface of the center portion and filling the pattern groove with a resin having a color different from that of the center portion.

As described above, according to the present invention, after the center portion or the core portion formed separately is installed in the mold, a molding liquid having a color different from that of the center portion or the core portion is injected into the mold to integrate the remaining portion together with the center portion or the core portion. By molding with a billiard, it is possible to easily produce a color ball for billiards whose surface is divided into two colors.

1 is an exploded perspective view of a color ball according to an embodiment of the present invention;
2 is a perspective view of a color ball applied to FIG. 1,
3 is a cross-sectional view of FIG. 2,
4 is a cross-sectional view of a color ball according to another embodiment of the present invention;
5 is a perspective view showing a state of cutting a processing member;
6 is a perspective view showing a state where a center portion is installed in a mold;
7 is a perspective view showing a state in which a pattern groove is formed in the core portion,
8 is a block diagram showing a color ball manufacturing method according to an embodiment of the present invention,
9 is a perspective view of a color ball according to another embodiment of the present invention;
10 is a cross-sectional view of FIG. 9,
It is a perspective view which shows the state in which the core part was installed in the mold.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the billiards color ball and its manufacturing method according to an embodiment of the present invention.

1 to 3, the color ball 10 of the present invention is a billiard ball used for billiards, the surface is divided into two colors. The color ball 10 according to an embodiment of the present invention includes a body part and a core part 30. Core portion 30 is formed inside the body portion to pass through the center of the body portion is formed so that both ends are exposed to the outside of the body portion.

The body portion is divided into a center portion 20 and a side portion 50. The center portion 20 has a cylindrical shape and both sides are formed in a plane. The perimeter of the center portion 20 is formed in a curved surface. The center portion 20 is formed in a single color set. The center portion 20 may be formed by injection molding a resin, and in this case, a phenol resin may be used as a main material as a resin material, and a composition in which a thickener, a stabilizer, a curing agent, a pigment, or the like is added thereto may be used.

In the center of the center portion 20 is formed a molding hole 25 penetrated from one end to the other end. The forming hole 25 is formed to pass between both side surfaces of the center portion 20. The forming hole 25 has a circular cross section, and the diameter is smaller than the width of the center portion 20.

The core portion 30 is formed in the molding hole 25 formed in the center portion 20. The core portion 30 is made of the same resin as the center portion 20. However, the color of the pigment added to have a different color from the center portion 20 is different. Although the core part 30 manufactured separately may be inserted into the forming hole 25 to form the core part 30 inside the center part 20, the core part 30 is preferably filled with the molding liquid in the forming hole 25. (30) is molded. The molding method will be described in detail in the manufacturing method to be described later.

Side portions 50 are formed on both sides of the center portion 20, respectively. The two side parts 50 have the same size and the same shape and color. One surface of the side portion 50 is formed in a plane to be coupled to the side of the center portion 20, the other surface is formed in a curved surface. The curved surface of the side portion 50 has the same radius of curvature as the curved surface around the center portion 20. Therefore, the side portions 50 are formed on both sides of the center portion 20 to form a globular body as a whole. The color ball 10 thus made has a diameter of 2 to 2 ⅜ inches, which is the size of a typical billiard ball.

The side part 50 is made of the same resin as the center part 20. However, the color of the pigment added to have a different color from the center portion 20 is different. The side part 50 may be made of the same color as the core part 30 or may be made of different colors. When the surface of the color ball 10 of the present invention is divided into two colors, the side portion 50 and the core portion 30 is made of the same color. The color of the side part 50 and the core part 30 is different from that of the center part 20. For example, the side part 50 and the core part 30 may be yellow, and the center part 20 may be formed in green.

The mark 40 is formed on the core 30. The mark 40 is formed at an end of at least one of both ends of the core portion 30 exposed to the outside of the center portion 20. Therefore, it may be formed at both ends of the core portion 30, or may be formed only at one end. The mark 40 is formed to be distinguishable from the surface of the core portion 30. For example, when the mark 40 consists of numbers as shown, the numbers have a different color than the core portion 30. For example, when the core part 30 is formed in yellow, the mark 40 is black.

The mark 40 is formed by filling, for example, a resin having a color different from that of the core part 30 in a pattern groove formed in a pattern set on the surface of the core part 30. The pattern groove 45 is formed to a predetermined depth on the surface of the core portion 30 as shown in FIG. The pattern groove 45 may be formed in various shapes according to the pattern of the mark. The pattern groove 45 may be formed in various ways, such as a figure, a letter, a symbol, a logo, a figure, in addition to the illustrated number.

Another example of the mark 45 is shown in FIG. 4. Referring to FIG. 4, the mark 45 is formed on the sheet 47 inserted into the mounting groove 35 formed at the end of the center portion, and formed on the sheet 47 to fix the sheet 47 to the mounting groove 35. The cover 49 is provided.

In order to install the seat 47 in the center portion, the mounting groove 35 is formed at a predetermined depth on the surface of the center portion. The depth of the mounting groove 35 is made deeper than the thickness of the seat 47. The mounting groove 35 can be formed by drilling. The sheet 47 may be formed in a circular shape in the illustrated example, but may have various shapes. A pattern is formed on the upper surface of the sheet 47. In the illustrated example, numbers are formed, but in addition, the pattern may be formed in other various shapes and various colors. The pattern has a color different from that of the center part so that it can be distinguished from the center part. The pattern may be formed by printing on one surface of the sheet 47 made of resin or by coating a transfer sheet.

The cover 49 is inserted into the mounting groove 35 into which the seat 47 is inserted to prevent the seat 47 from being separated from the mounting groove 35. The cover 49 is preferably made of a light-transmissive material so that the pattern of the sheet 47 can be seen. After inserting the sheet 47 into the mounting groove 35 by the method of forming the cover 49 may be formed by injecting a finish solution of the phenolic resin material into the remaining space and then hardened. In addition, the cover 49 may be inserted into the mounting groove 35 and then coupled. At this time, the cover 49 is bonded to the center portion by an adhesive.

9 and 10 illustrate a color ball according to another embodiment of the present invention. 9 and 10, the color ball of the present invention is divided into two colors on the surface. The illustrated color ball is largely provided with a body portion 101 and a core portion 110.

The body portion 101 forms a sphere together with the core portion 110 surrounding the core portion 110. The core part 110 is formed in a different color from the body part 101 so as to be distinguished from the body part 101 in color. Core portion 110 is formed in the body portion 101 so as to pass through the center of the body portion 101 is formed so that both ends are exposed to the outside of the body portion 101.

After forming the forming hole 105 passing through the center in the body portion 101, the cylindrical core portion 110 may be inserted into the forming hole 105 to form color balls. It is preferable to form the body portion 101 and the core portion 110 integrally. Since the mark 120 formed at the end of the core part 110 is the same as the embodiment of FIG. 1 except that the pattern is different, a detailed description thereof will be omitted.

Hereinafter, a method of manufacturing a color ball according to an embodiment of the present invention will be described with reference to FIGS. 2 and 5, 6, and 8.

The method of manufacturing a color ball according to the present invention comprises the steps of preparing a center portion 20 having a cutting surface formed on both sides by cutting the processing member 1 having a large cylindrical shape, and penetrating the other end from one end of the center portion 20. Machining the forming holes 25 passing between the two cut surfaces of the center portion 20, installing the center portion 20 in a mold provided with a spherical cavity 85, and the cavity 85. Forming a core part in the molding hole 25 by forming a molding liquid having a color different from that of the center part, and forming side parts 50 at both sides of the center part 20. Separating the spherical shaped body from the mold after curing.

Specifically, the center portion 20 is formed first. The center portion 20 is formed by cutting the processing member 1 shown in FIG. The processing member 1 may be injection molded using a mold. The processing member 1 is formed long in a cylindrical shape. The prepared processing member 1 is cut at regular intervals to make the cutting member 5. The cutting member 5 thus made is the center portion 20. The cutting member 5 has a cylindrical shape having the same diameter but only a length smaller than that of the processing member 1. When cutting, the cutting member 1 is cut in a direction orthogonal to the axial direction of the cutting member 1. The obtained cutting member 5 may be used as a center portion as it is, or may be used as a center portion by processing a circumference. That is, the circumference of the cutting member 5 is processed to have the same radius of curvature as the spherical curved surface.

The forming hole 25 is formed in the center portion 20 obtained by cutting the processing member as described above. The forming hole 25 is formed to a constant diameter by drilling.

Next, the center part 20 in which the shaping | molding hole 25 was formed is installed in the mold inside which the spherical cavity 85 was provided. 6 shows an example of a mold for injection molding. The injection molding apparatus is used to inject the molding liquid into the molds 80 and 90 mounted on the molding machine, thereby injection molding a spherical molded body. Although not shown, the molding machine includes an injection device for injecting molding liquid and a hydraulic device forcibly opening the mold to separate the molded body from the mold.

A spherical cavity 85 corresponding to the shape of the colored balls is formed inside the mold. The mold is composed of a lower mold 80 and an upper mold 90 that mutually mates with the lower mold 80. Hemispherical spaces are formed in the lower mold 80 and the upper mold 90, respectively. Therefore, the lower mold 80 and the upper mold 90 combine with each other to form one spherical cavity 85.

Upper and lower support plates 95 and 87 are respectively installed at upper and lower portions of the upper and lower molds, and guide pins 83 are installed to guide the molds and mold openings. The sprue bush 91 is inserted into and fixed to the upper surface of the upper support plate 95 so that the molding liquid injected from the molding machine is injected into the cavity 85 of the mold. The sprue bush 91 is shaped into a disc shape that is substantially perforated and the perforated interior is connected to the cavity 85 by a runner. And the sprue bush 91 is coupled with a nozzle (not shown) is injected with a molding liquid injected from the injection device.

The center portion 20 is installed in the cavity 85 formed in the lower mold 80. At this time, the center portion 20 is located in the center of the cavity. Then, the molding liquid is injected into the mold inner cavity 85 while the upper mold 90 is coupled to the lower mold. Molding liquid is injected into the cavity through a runner (not shown) formed in the upper mold, and in this case, the runner is formed to be injected to both sides of the forming hole 25 and the center portion 20. The resin composition for manufacturing a color ball from a molding liquid can be used. The resin composition may be a phenol resin as a main raw material, and thickeners, stabilizers, curing agents, pigments, and the like may be added thereto.

After the molding liquid is cured in the mold, a separation step of separating the spherical shaped body from the mold is performed. The separating step separates the molded body 11 after opening the upper mold 90 from the lower mold 80. In the molded body separated from the mold, side portions 50 are formed on both sides of the center portion 20, and the core portion 30 is formed in the molding hole of the center portion 20.

In the above-described example, the molding method by injection molding has been described, but in addition to injection molding, a liquid molding liquid may be poured into a mold and cured at room temperature without application of pressure to be molded. In addition, of course, a variety of plastic molding process can be applied.

Next, the CNC machined the separated molded body into the correct sphere. The above process uses a CNC machine tool to process the formed body into a sphere having a diameter of 2 ~ 2 inches in diameter.

After the CNC processing, the mark 40 is formed on the surface of the molded body. The mark 40 forms a mark distinguished from the surface of the core portion 30 at at least one end of both ends of the core portion 30 exposed out of the molded body. The mark 40 is formed by filling a pattern groove set at an end of the core portion 30 and filling a pattern groove with a resin having a different color from that of the core portion 30. As shown in FIG. 7, the pattern groove 45 is formed by digging at a predetermined depth on the end surface of the core part 30. The pattern groove 45 may be formed in various shapes according to the set pattern. The pattern may be applied with various patterns such as pictures, letters, symbols, logos, and figures, in addition to the illustrated numbers.

After the resin is cured, a polishing step of polishing the surface of the molded body is further performed to produce color balls. Surface polishing may be a conventional process using an abrasive.

Method of forming a mark according to another embodiment of the present invention is as shown in FIG. First, the mounting groove 35 is formed at a predetermined depth at the end of the center portion. The mounting groove 35 is formed to a constant diameter by drilling. Then, the prepared sheet 47 is inserted into the mounting groove 35. Then, in order to fix the sheet 47 to the mounting groove 35, the finishing liquid for injecting the finishing liquid into the mounting groove 35 is injected. The finishing liquid may be the same as the molding liquid forming the center portion. When the injected finishing solution is cured, a cover 49 is formed.

On the other hand, in the above-described embodiments, the cutting member obtained by cutting the processing member is to form a molding hole after processing the circumference to the spherical curved surface, on the other hand, forming the molding hole in the state that does not process the circumference of the cutting member, After the mold is installed inside the mold, the molding liquid may be injected and cured, and then separated from the mold to prepare a surface by polishing and coating.

And another embodiment of the present invention for manufacturing the color ball shown in Figure 9 and 10 is the step of installing the cylindrical core portion 110 in a mold provided with a spherical cavity, the core portion as the cavity Injecting a molding liquid having a color different from that of (110) to form a body portion 101 around the core portion 110, and separating the spherical shaped body from the mold after the molding liquid is cured. It includes.

As the molding processing method applied to the present embodiment, as shown in FIG. 11, a liquid molding liquid may be poured into a mold and cured at room temperature without applying pressure, thereby molding.

The mold is separated into an upper mold 130 and a lower mold 140. The upper mold 130 is a hemispherical cavity is formed, the lower mold 140 is also a hemispherical cavity 149 is formed. A flange 131 is formed at a lower end of the upper mold 130, and a plurality of insertion protrusions 135 are formed at one surface of the flange 131. A flange 141 is formed at an upper end of the lower mold 140 to face the flange portion 131 of the upper mold 130. A plurality of insertion holes 145 into which the insertion protrusion 135 is inserted are formed in the flange 141 of the lower mold. In addition, the injection holes 137 and 147 are formed to pour the molding liquid into the mold in a state where the upper mold 130 and the lower mold 140 are coupled to each other. After the cylindrical core portion 110 is installed in the cavity 149 of the lower mold, the upper mold 130 is bonded to the lower mold 140, and then the molding liquid is poured through the injection hole and cured at room temperature. Disconnect.

The separated molded body is subjected to a CNC machining process and forms pattern grooves at both ends of the core part and fills the resin to form a mark. After the resin is cured, a polishing step of polishing the surface of the molded body is further performed to produce color balls.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

10: color ball 20: center portion
30: center part 40: mark
50: side part

Claims

A body portion;
And a core part formed inside the body part so as to pass through the center of the body part, and both ends of which are exposed to the outside of the body part and distinguished from the body part by color.

The color ball for billiards according to claim 1, wherein the core part is installed in a mold provided with a cavity, and then a molding liquid is injected into the mold to integrally form the body part around the core part.

According to claim 1, wherein the body portion is provided with a forming hole in which the core portion is formed and the center portion having a different color than the core portion, and the side portion formed on both sides of the center portion and having a different color than the center portion, respectively Billiards color ball characterized in that it comprises.

The method of claim 3, wherein the center portion is installed in a mold provided with a cavity, and then a molding liquid is injected into the mold to form the core portion in the forming hole, and the side portions are formed on both sides of the center portion, thereby forming the core portion and the center portion, Billiards color ball, characterized in that the side portion integrally molded.

The color ball for billiards according to claim 1 or 3, further comprising a mark which is formed at at least one end of both ends of the core portion exposed to the outside of the body portion and is distinguished from the core portion.

The color ball for billiards according to claim 5, wherein the mark is formed by filling a pattern groove formed in a pattern set on the surface of the core part with a resin having a color different from that of the core part.

The method of claim 5, wherein the mark is inserted into the mounting groove formed in a predetermined depth on the surface of the core portion and has a sheet having a pattern of a predetermined pattern is formed, and a cover formed on the sheet to fix the sheet to the mounting groove Billiards color ball, characterized in that.

Cutting a cylindrical processing member to prepare a center portion having cut surfaces formed at both sides thereof;
Processing a molding hole passing through the other end from one end of the center part and passing between both cut surfaces of the center part;
Installing the center part in a mold provided with a cavity;
Injecting a molding liquid having a different color from the center portion into the cavity to form a core portion in the forming hole, and forming side portions at both sides of the center portion;
And separating the molded body from the mold after the molding liquid is cured.

Installing a cylindrical core in a mold provided with a cavity;
Injecting a molding liquid having a color different from that of the core into the cavity to form a body around the core;
And separating the molded body from the mold after the molding liquid is cured.

10. The billiard according to claim 8 or 9, further comprising forming a mark distinguished from the surface of the core part at at least one end of both ends of the core part exposed to the outside of the molded body. Method of manufacturing colored balls.

The method of claim 10, wherein the mark is formed by filling a pattern groove set on the surface of the center portion and filling the pattern groove with a resin having a color different from that of the center portion. .