JP3145319B2 - Golf ball manufacturing apparatus and manufacturing method - Google Patents
Golf ball manufacturing apparatus and manufacturing methodInfo
- Publication number
- JP3145319B2 JP3145319B2 JP28143096A JP28143096A JP3145319B2 JP 3145319 B2 JP3145319 B2 JP 3145319B2 JP 28143096 A JP28143096 A JP 28143096A JP 28143096 A JP28143096 A JP 28143096A JP 3145319 B2 JP3145319 B2 JP 3145319B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- taper
- pair
- outer layer
- golf ball
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ゴルフボール、特
に、多層構造を有するゴルフボールの製造装置及び製造
方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf ball, and more particularly, to an apparatus and a method for manufacturing a golf ball having a multilayer structure.
【０００２】[0002]
【従来の技術】従来、多層構造のゴルフボールの製造方
法としては、次の方法があった。 内核を別途加硫成形した後、外層用金型内に、この
内核を可動ピンで所定位置に保持させ、この状態で、外
層を構成する材料を射出成形機またはトランスファー金
型により射出すると共に、可動ピンを引き抜き、そのま
ま加硫成形する方法。 半球状凹型と半球状凸型とからなる金型にて半殻状
の未加硫の一対の外層半割体を形成し、（または未加硫
状態でシュリンクしない程度に一定時間熱を加えて一対
の外層半割体を形成し、）その後、別途加硫成形した内
核を外層半割体に挿入して、加硫プレス成形する方法。 上記の方法において、外層を半殻状とせずに、シ
ート状とする方法。2. Description of the Related Art Conventionally, there have been the following methods for producing a golf ball having a multilayer structure. After separately vulcanizing and molding the inner core, the inner core is held in a predetermined position by a movable pin in the outer layer mold, and in this state, the material constituting the outer layer is injected by an injection molding machine or a transfer mold, A method in which a movable pin is pulled out and vulcanized. A pair of semi-shell unvulcanized outer layer halves are formed in a mold composed of a hemispherical concave shape and a hemispherical convex shape, and heat is applied for a certain period of time to such an extent that the uncured state does not shrink. A method of forming a pair of outer layer halves, and then inserting a separately vulcanized inner core into the outer layer halves and vulcanizing press molding. In the above method, a method in which the outer layer is formed in a sheet shape without forming a half shell shape.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記方
法では、多層構造を有するゴルフボールの製造に好適な
ものではなかった。即ち、上述のの方法では、金型装
置の全体構造が極めて複雑であり、しかも、材料注入時
の圧力の限界により１回のプレスでの取り数が少なくな
って大量生産には不向きであった。また、可動ピンが挿
通される金型孔部の径寸法設定も困難であった。つま
り、可動ピンの外周面と金型孔部の内周面との間のクリ
アランスが極めて小であれば、該可動ピンの往復動が滑
らかに行えず、逆に、このクリアランスが大きければ、
このクリアランスからゴムが流出する虞れがあるからで
ある。However, the above method is not suitable for producing a golf ball having a multilayer structure. That is, in the above-described method, the entire structure of the mold apparatus is extremely complicated, and the number of presses per press is reduced due to the pressure limit at the time of material injection, which is not suitable for mass production. . Also, it has been difficult to set the diameter of the mold hole through which the movable pin is inserted. That is, if the clearance between the outer peripheral surface of the movable pin and the inner peripheral surface of the mold hole is extremely small, reciprocation of the movable pin cannot be performed smoothly. Conversely, if the clearance is large,
This is because rubber may flow out of the clearance.
【０００４】また、上述のの方法では、外層半割体を
形成した後、金型を開とする際、凹・凸型の何方に外層
半割体が付着するかわからず、やはり大量生産できなか
った。また、上述のの方法では、外層半割体の仕込み
をシート状に変更しただけで上述のの方法と同様の欠
点があった。そこで、高品質の多層構造のゴルフボール
を製造することができるゴルフボール製造方法を提供す
ることを目的とする。Further, in the above-mentioned method, when the mold is opened after forming the outer layer half, the outer layer half cannot be attached to the concave or convex mold. Did not. Further, the above-described method has the same drawback as the above-described method, except that the preparation of the outer layer half body is changed to a sheet shape. Accordingly, it is an object of the present invention to provide a golf ball manufacturing method capable of manufacturing a high-quality golf ball having a multilayer structure.
【０００５】[0005]
【課題を解決するための手段】上述の目的を達成するた
めに、本発明に係る第１のゴルフボール製造装置は、加
硫成形用金型のキャビティとは異形のキャビティ内で半
殻状の未加硫の一対の外層半割体を重合わせて加硫済内
核を包み込んで一体化する金型を備えたゴルフボール製
造装置であって、上記金型が、重合わされる半球状の凹
部を有する一対の型を備え、かつ、該型の凹部の開口端
内周縁に、順次開口側に拡開するテーパを合わせ面から
2.0mm以上 8.0mm以下までの範囲に設けると共に、該テ
ーパの傾斜角度を25°以上30°未満としたものである。In order to achieve the above-mentioned object, a first golf ball manufacturing apparatus according to the present invention has a half-shell-like shape in a cavity having a different shape from the cavity of a vulcanization mold. A golf ball manufacturing apparatus provided with a mold that wraps a pair of unvulcanized outer layer halves and wraps and integrates a vulcanized inner core, wherein the mold has a hemispherical concave portion to be polymerized. A pair of dies having a, and, on the inner peripheral edge of the opening end of the concave portion of the die, a taper that gradually expands toward the opening side from the mating surface.
The taper is provided in a range of 2.0 mm or more and 8.0 mm or less, and the inclination angle of the taper is set to 25 ° or more and less than 30 °.
【０００６】また、第２のゴルフボール製造装置は、加
硫成形用金型のキャビティとは異形のキャビティ内で半
殻状の未加硫の一対の外層半割体を重合わせて加硫済内
核を包み込んで一体化する金型を備えたゴルフボール製
造装置であって、上記金型が、重合わされる半球状の凹
部を有する一対の型を備え、かつ、該型の凹部の開口端
内周縁に、順次開口側に拡開すると共に連続する第１・
第２テーパを合わせ面から 0.5mm以上 8.0mm以下までの
範囲に設けると共に、外径側の第１テーパの傾斜角度を
内径側の第２テーパの傾斜角度より大とし、さらに、該
第１テーパの傾斜角度を30°以上80°以下としたもので
ある。In the second golf ball manufacturing apparatus, a pair of half-shell unvulcanized outer layer halves are superposed and vulcanized in a cavity having a shape different from that of a vulcanization mold. A golf ball manufacturing apparatus provided with a mold that wraps and integrates an inner core, wherein the mold includes a pair of molds each having a hemispherical concave portion to be polymerized, and the inside of an open end of the concave portion of the mold. At the peripheral edge, the first
The second taper is provided in a range of 0.5 mm or more and 8.0 mm or less from the mating surface, and the inclination angle of the first taper on the outer diameter side is larger than the inclination angle of the second taper on the inner diameter side. Is set to be 30 ° or more and 80 ° or less.
【０００７】また、第３のゴルフボール製造装置は、加
硫成形用金型のキャビティとは異形のキャビティ内で半
殻状の未加硫の一対の外層半割体を重合わせて加硫済内
核を包み込んで一体化する金型を備えたゴルフボール製
造装置であって、半殻状の未加硫の外層半割体が装着さ
れる半球状の凹部を有する一対の型と、外層半割体に加
硫済内核が投入されていない一方の型を加硫済内核が投
入されている他方の型に対して鉛直方向に沿って下降さ
せて該一対の型を重合わせる重合わせ機構と、を備えた
ものである。In a third golf ball manufacturing apparatus, a pair of half-shell unvulcanized outer layer halves are overlapped and vulcanized in a cavity having a shape different from that of a vulcanization mold. A golf ball manufacturing apparatus provided with a mold that wraps and integrates an inner core, comprising: a pair of molds each having a hemispherical concave portion in which a half-shell unvulcanized outer layer half is mounted; A stacking mechanism for vertically lowering one of the molds in which the vulcanized inner core has not been put into the body with respect to the other mold in which the vulcanized inner core has been put, and stacking the pair of molds, It is provided with.
【０００８】また、第４のゴルフボール製造装置は、加
硫成形用金型のキャビティとは異形のキャビティ内で半
殻状の未加硫の一対の外層半割体を重合わせて加硫済内
核を包み込んで一体化する金型を備えたゴルフボール製
造装置であって、半殻状の未加硫の外層半割体が装着さ
れる半球状の凹部を有する一対の型と、外層半割体に加
硫済内核が投入されていない一方の型を加硫済内核が投
入されている他方の型に対して鉛直方向に沿って下降さ
せて該一対の型を重合わせる重合わせ機構と、を備え、
かつ、上記型の凹部の開口端内周縁に、順次開口側に拡
開するテーパを合わせ面から 2.0mm以上 8.0mm以下まで
の範囲に設けると共に、該テーパの傾斜角度を25°以上
30°未満としたものである。In a fourth golf ball manufacturing apparatus, a pair of half-shell-shaped unvulcanized outer layer halves are superposed and vulcanized in a cavity having a shape different from that of a vulcanization mold. A golf ball manufacturing apparatus provided with a mold that wraps and integrates an inner core, comprising: a pair of molds each having a hemispherical concave portion in which a half-shell unvulcanized outer layer half is mounted; A stacking mechanism for vertically lowering one of the molds in which the vulcanized inner core has not been put into the body with respect to the other mold in which the vulcanized inner core has been put, and stacking the pair of molds, With
And, on the inner peripheral edge of the opening end of the concave portion of the mold, a taper gradually expanding toward the opening side is provided in a range from 2.0 mm to 8.0 mm from the mating surface, and the inclination angle of the taper is 25 ° or more.
It is less than 30 °.
【０００９】また、第５のゴルフボール製造装置は、加
硫成形用金型のキャビティとは異形のキャビティ内で半
殻状の未加硫の一対の外層半割体を重合わせて加硫済内
核を包み込んで一体化する金型を備えたゴルフボール製
造装置であって、半殻状の未加硫の外層半割体が装着さ
れる半球状の凹部を有する一対の型と、外層半割体に加
硫済内核が投入されていない一方の型を加硫済内核が投
入されている他方の型に対して鉛直方向に沿って下降さ
せて該一対の型を重合わせる重合わせ機構と、を備え、
かつ、上記型の凹部の開口端内周縁に、順次開口側に拡
開すると共に連続する第１・第２テーパを合わせ面から
0.5mm以上 8.0mm以下までの範囲に設けると共に、外径
側の第１テーパの傾斜角度を内径側の第２テーパの傾斜
角度より大とし、さらに、該第１テーパの傾斜角度を30
°以上80°以下としたものである。In a fifth golf ball manufacturing apparatus, a pair of half-shell unvulcanized outer layer halves are overlapped and vulcanized in a cavity having a shape different from that of a vulcanization mold. A golf ball manufacturing apparatus provided with a mold that wraps and integrates an inner core, comprising: a pair of molds each having a hemispherical concave portion in which a half-shell unvulcanized outer layer half is mounted; A stacking mechanism for vertically lowering one of the molds in which the vulcanized inner core has not been put into the body with respect to the other mold in which the vulcanized inner core has been put, and stacking the pair of molds, With
In addition, the first and second tapers that are successively expanded toward the opening side and are continuously formed on the inner peripheral edge of the opening end of the concave portion of the mold from the mating surface.
In the range of 0.5 mm or more and 8.0 mm or less, the inclination angle of the first taper on the outer diameter side is larger than the inclination angle of the second taper on the inner diameter side, and the inclination angle of the first taper is 30
° or more and 80 ° or less.
【００１０】また、本発明に係るゴルフボール製造方法
は、生ゴムからなる材料を40℃〜140 ℃で２分から35時
間加熱した後、半球状の凸部を有する第１の型と半球状
の凹部を有する第２の型とを備えた外層半割体用金型
に、上記材料を投入して、半殻状の未加硫の外層半割体
を一対形成し、次に、上記第２の型の凹部に外層半割体
を付着させたままで、該外層半割体の何方か一方に、加
硫済内核を投入して、該一対の外層半割体を重ねて予備
成形品を形成し、その後、該予備成形品を加硫成形用金
型にて加硫成形するものである。この際、生ゴムからな
る材料に加熱時間を、加熱温度をＸとしたときに、２×
２((140-X)/10)分としたり、凹部の開口端内周縁に順次
開口側に拡開するテーパを合わせ面から 2.0mm以上 8.0
mm以下までの範囲に設けると共に該テーパの傾斜角度を
25°以上30°未満とした金型を使用して、一対の外層半
割体を重合わせるようにしたり、凹部の開口端内周縁に
順次開口側に拡開すると共に連続する第１・第２テーパ
を合わせ面から 0.5mm以上 8.0mm以下までの範囲に設け
ると共に外径側の第１テーパの傾斜角度を内径側の第２
テーパの傾斜角度より大としさらに該第１テーパの傾斜
角度を30°以上80°以下とした金型を使用して、一対の
外層半割体を重合わせたりすることができる。The method of manufacturing a golf ball according to the present invention is characterized in that the raw rubber material is heated at 40 ° C. to 140 ° C. for 2 minutes to 35 hours, and then the first mold having a hemispherical convex portion and the hemispherical concave portion are formed. The above material is put into a mold for an outer layer half body having a second mold having a half mold, and a pair of half shell-shaped unvulcanized outer layer halves are formed. While the outer layer half is still attached to the concave portion of the mold, a vulcanized inner core is charged into one of the outer layer halves, and the pair of outer layer halves are stacked to form a preform. Then, the preformed product is vulcanized and formed by a vulcanization molding die. At this time, when the heating time for the material made of raw rubber is X, the heating time is 2 ×
2 ((140-X) / 10) minutes or a taper that gradually expands toward the opening side at the inner edge of the opening end of the recess is 2.0 mm or more from the mating surface.
mm and the inclination angle of the taper
Using a mold of 25 ° or more and less than 30 °, a pair of outer layer halves are overlapped, or the first and second portions are successively expanded to the opening side on the inner peripheral edge of the opening end of the concave portion and continuous. The taper is provided within a range of 0.5 mm or more and 8.0 mm or less from the mating surface, and the inclination angle of the first taper on the outer diameter side is set to the second angle on the inner diameter side.
A pair of outer layer halves can be overlapped by using a mold whose inclination angle is greater than the inclination angle of the taper and the inclination angle of the first taper is 30 ° or more and 80 ° or less.
【００１１】[0011]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて詳説する。Embodiments of the present invention will be described below in detail with reference to the drawings.
【００１２】図２は本発明に係るゴルフボール製造装置
の簡略図を示し、この装置は、加硫成形用金型（図示省
略）のキャビティとは異形のキャビティを有する予備成
形用金型５（具体的には、後述する第２の型４，４で構
成される。）を備え、図３に示すように、加硫済内層
（内核23）を未加硫の外層24で包んで、予備成形品Ｓ1
を形成し、その後、加硫成形用金型にて加硫成形して製
品（多層構造のゴルフボール）を製造するものである。FIG. 2 is a simplified view of a golf ball manufacturing apparatus according to the present invention. This apparatus includes a preforming mold 5 (having a cavity different from the cavity of a vulcanizing mold (not shown)). Specifically, it comprises second molds 4 and 4 which will be described later.) As shown in FIG. 3, the vulcanized inner layer (inner core 23) is wrapped with an unvulcanized outer layer 24, and Molded product S 1
Is formed and then vulcanized and formed by a vulcanizing mold to produce a product (a golf ball having a multilayer structure).
【００１３】この場合、装置は、図２に示すように、半
球状の凸部１を有する第１の型２と、半球状の凹部３を
有する第２の型４と、からなる外層半割体用金型20を備
え、第１・第２の型２，４にて、図２の（ロ）に示すよ
うに、半殻状のキャビティ13を形成する。なお、型２の
凸部１の曲率半径としては、加硫済内核23の半径以下に
設定する。これは、内核23と、形成しようとする外層24
との密着性を向上させるためである。そして、凸部１の
曲率半径と内核23の半径との差は、２mm以下が好まし
い。２mmを越えると内核23セット後の貼り合わせ工程に
おいて、外層24と内核23との間に無理な力が生じ、偏心
の原因が生じるからである。In this case, as shown in FIG. 2, the apparatus comprises an outer layer half comprising a first mold 2 having a hemispherical convex portion 1 and a second mold 4 having a hemispherical concave portion 3. A body mold 20 is provided, and a half-shell-shaped cavity 13 is formed in the first and second molds 2 and 4 as shown in FIG. The radius of curvature of the convex portion 1 of the mold 2 is set to be equal to or smaller than the radius of the vulcanized inner core 23. This consists of the inner core 23 and the outer layer 24 to be formed.
This is for improving the adhesion to the substrate. The difference between the radius of curvature of the projection 1 and the radius of the inner core 23 is preferably 2 mm or less. If it exceeds 2 mm, an excessive force is generated between the outer layer 24 and the inner core 23 in the bonding step after the inner core 23 is set, which causes eccentricity.
【００１４】しかして、この型４の凹部３は、曲率半径
が相違する少なくとも２種類の凹曲面を有し、かつ、図
１に示すように、その開口端内周縁に、順次開口側に拡
開するテーパ６を有する。このテーパ６の傾斜角度θと
しては、25°以上30°未満とされる。この場合、このテ
ーパ６は、所定範囲Ｈ、具体的には、型４の合わせ面15
から 2.0mm以上 8.0mm以下までの範囲に設けられる。な
お、この場合の傾斜角度θは金型中心線に対しての傾斜
角度である。However, the concave portion 3 of the mold 4 has at least two types of concave curved surfaces having different radii of curvature, and as shown in FIG. It has a taper 6 that opens. The inclination angle θ of this taper 6 is not less than 25 ° and less than 30 °. In this case, the taper 6 has a predetermined range H, specifically, the mating surface 15 of the mold 4.
From 2.0mm to 8.0mm. In this case, the inclination angle θ is an inclination angle with respect to the mold center line.
【００１５】ところで、この製造装置は、型２，４は夫
々一対づづ備え、凹部３を有する一対の型４，４にて上
述の如く金型５を構成し、該型４，４のうち、一方の型
４が、図４に示すように、重合わせ機構７を介して移動
可能とされている。重合わせ機構７は、例えば、軸10を
介して型４を揺動可能として支持している基板11を受け
る受け台８と、該受け台８を上下動させるシリンダ９
と、を備える。従って、図４の（イ）の状態から図４の
（ロ）の矢印Ａに示すように、シリンダ９のピストンロ
ッド９ａを伸ばして、受け台８延いては型４を上昇さ
せ、その後、図４の（ハ）に示すように、軸10を中心に
型４を矢印Ｂに示すように揺動させ、この一方の型４を
他方の型４の真上にそれらの凹部３，３が相対面するよ
うに位置させた後、図４の（ニ）に示すように、シリン
ダ９のピストンロッド９ａを矢印Ｃの如く短縮させるこ
とによって、一対の型４，４を重合わせることができ
る。即ち、この重合わせ機構７は、一方の型４を他方の
型４に対して鉛直方向に沿って下降させることができ
る。なお、図４の（ニ）のように、型４，４を重合わせ
る際には、基板11が軸10を中心に揺動しないように図示
省略のストッパにて規制している。In this manufacturing apparatus, the molds 2 and 4 are provided in pairs, and the pair of molds 4 and 4 having the concave portions 3 constitute the mold 5 as described above. One of the dies 4 can be moved via the overlapping mechanism 7 as shown in FIG. The weighing mechanism 7 includes, for example, a receiving table 8 that receives a substrate 11 that supports the mold 4 so as to be able to swing via a shaft 10, and a cylinder 9 that moves the receiving table 8 up and down.
And. Therefore, the piston rod 9a of the cylinder 9 is extended from the state shown in FIG. 4A as shown by the arrow A in FIG. 4B, and the cradle 8 and the mold 4 are raised. As shown in FIG. 4 (c), the mold 4 is swung about the shaft 10 as shown by the arrow B, and the one mold 4 is positioned directly above the other mold 4 so that the recesses 3 and 3 are relatively positioned. After being positioned so as to face each other, the pair of dies 4 can be overlapped by shortening the piston rod 9a of the cylinder 9 as shown by arrow C as shown in FIG. That is, the overlapping mechanism 7 can lower one mold 4 with respect to the other mold 4 along the vertical direction. As shown in FIG. 4D, when the molds 4 and 4 are overlapped, a stopper (not shown) restricts the substrate 11 from swinging about the shaft 10.
【００１６】次に、上述の如く構成された製造装置を使
用したゴルフボール製造方法を説明する。図２の（イ）
に示すように、型４の凹部３を上方開口状とした状態
で、該凹部３に、外層形成用の短円柱形状乃至円盤形状
の材料（生ゴム）Ｓを投入した後、第１の型２を下降さ
せ、図２の（ロ）に示すように、この型２と型４とで、
キャビティ13を形成して、半殻状の未加硫の外層半割体
22…を形成する。この際のプレス時間としては、例え
ば、５秒位とする。その後、型２を上昇させるが、この
場合、型４の凹部３の形状により、形成された外層半割
体22は該第２の型４に付着している。Next, a method of manufacturing a golf ball using the manufacturing apparatus configured as described above will be described. (A) of FIG.
As shown in (1), in a state where the concave portion 3 of the mold 4 is in the shape of an upper opening, a short cylindrical or disc-shaped material (raw rubber) S for forming an outer layer is charged into the concave portion 3, and then the first mold 2 is formed. Is lowered, and as shown in (b) of FIG.
Forming the cavity 13 and forming a half-shell unvulcanized outer layer half
22 are formed. The press time at this time is, for example, about 5 seconds. Thereafter, the mold 2 is raised. In this case, the formed outer layer half 22 adheres to the second mold 4 due to the shape of the concave portion 3 of the mold 4.
【００１７】しかして、材料（生ゴム）Ｓとしては、残
留応力を無くす必要があり、そのため熱による変形を招
かず、ゴムの加硫を起こさない範囲で加熱処理しておく
のが好ましい。この加熱処理の条件としては、加熱温度
をＸ℃としたときに、２×２((140-X)/10)分とするのが
好ましく、具体的には、40℃〜140 ℃の温度で２分から
35時間とする。However, the material (raw rubber) S needs to be free of residual stress. Therefore, it is preferable to perform a heat treatment within a range that does not cause deformation due to heat and does not cause vulcanization of the rubber. The condition of this heat treatment is preferably 2 × 2 ((140−X) / 10) minutes when the heating temperature is X ° C. Specifically, at a temperature of 40 ° C. to 140 ° C. From 2 minutes
35 hours.
【００１８】次に、図２の（ハ）に示すように、一の外
層半割体22に、加硫済内核23を挿入し、これに内核23が
挿入されていない他の外層半割体22を図３に示すように
重合わせて、未加硫のゴルフボール（予備成形品Ｓ1 ）
を形成する。Next, as shown in FIG. 2C, a vulcanized inner core 23 is inserted into one outer layer half 22, and another outer layer half having no inner core 23 inserted therein. 22 are superimposed as shown in FIG. 3, and an unvulcanized golf ball (preformed product S 1 )
To form
【００１９】この際、上述の重合わせ機構７にて、図４
に示すように、加硫済内核23が投入されていない一方の
型４を加硫済内核23が投入されていない他方の型４に対
して鉛直方向に下降させて、この一対の型４，４を重合
わせる。At this time, the above-mentioned overlapping mechanism 7
As shown in the figure, the one mold 4 in which the vulcanized core 23 is not charged is lowered vertically with respect to the other mold 4 in which the vulcanized core 23 is not charged. Overlap 4.
【００２０】これによって、プレス方向を垂直方向とす
ることができ、重合わせの際に、圧力の不均等が生じ難
く、形成される予備成形品Ｓ1 が、その合わせ面におい
て開口したり、加硫済内核23が偏心したりすることがな
い。これに対して、単に、一方の型４をヒンジを介して
揺動させて、他方の型４に重合わせれば、斜め方向から
重合わされることになって、圧力の不均等が生じ、予備
成形品Ｓ1 の合わせ面において開口したり、加硫済内核
23が偏心したりする虞れがある。[0020] Thus, it is possible to the pressing direction and a vertical direction, during heavy alignment, unequal hardly occurs in the pressure, the preform S 1 is formed, or open at its mating surface, pressurized The sulfur core 23 does not become eccentric. On the other hand, if one mold 4 is simply swung through a hinge and overlaps with the other mold 4, they will be superposed from an oblique direction, causing uneven pressure and preforming. or open at the mating face of the article S 1, vulcanized nucleus
23 may be eccentric.
【００２１】その後、この形成された未加硫のゴルフボ
ール（予備成形品Ｓ1 ）を、図示省略の加硫成形用金型
にて、加硫成形すれば、ゴルフボール（製品）を形成す
ることができる。Thereafter, the formed unvulcanized golf ball (preformed product S 1 ) is vulcanized and molded by a vulcanization molding die (not shown) to form a golf ball (product). be able to.
【００２２】ところで、予備成形品Ｓ1 の微小な変形や
未加硫層（外層半割体22，22）の厚みの不均一があると
き、プレス加硫時の型締め時には、未加硫層の厚みの大
きいところは薄いところに比べてゴムが流れやすくなり
厚いところはますます厚く、薄いところはますます薄く
なって加硫済内核23の大きな偏心を招くので、凹部３の
開口端内周縁にテーパ６を有さない型を使用して、外層
半割体22，22を重合わせて、未加硫のゴルフボール（予
備成形品Ｓ1 ）を形成すれば、図７の（イ）に示すよう
に、時間の経過とともに、ゴムの残留応力によるシュリ
ンクが生じ、接着部分から剥離し、いわゆる口開きが生
じ、同様に加硫済内核23の偏心を招く。つまり、口開き
したまま、加硫用金型21にて加硫成形すれば、図７の
（ロ）に示すように、開口部と反対側のゴムが良く流
れ、内核23が開口側に押し出され、図７の（ハ）のよう
に、製品Ｐにおいて内核23が偏心する。By the way, when there is unevenness in the thickness of the fine deformation and uncured硫層preform S 1 (outer halves 22, 22), at the time of mold clamping press vulcanization, unvulcanized硫層The thicker part is easier to flow rubber than the thinner part, and the thicker part is thicker, and the thinner part is thinner and thinner, causing a large eccentricity of the vulcanized inner core 23. If an unvulcanized golf ball (preformed product S 1 ) is formed by superimposing the outer half halves 22 and 22 using a mold having no taper 6 in FIG. As shown, as time passes, shrinkage occurs due to the residual stress of the rubber, peels off from the bonded portion, and a so-called opening occurs, similarly causing the vulcanized inner core 23 to be eccentric. That is, if vulcanization molding is performed with the vulcanizing mold 21 with the mouth open, the rubber on the side opposite to the opening flows well as shown in FIG. 7B, and the inner core 23 is pushed out to the opening side. As shown in FIG. 7C, the inner core 23 of the product P is eccentric.
【００２３】これに対して、本願の如く、凹部３の開口
端内周縁にテーパ６を有する型４，４を使用して、外層
半割体22，22を重合わせれば、図６に示すように、予備
成形品Ｓ1 には、その合わせ面部（赤道部）に外鍔状に
膨出するシーム部25が形成され、接着面積が大となって
時間が経過しても、その一部が開口（口開き）しない。
しかしながら、加硫プレス時にシーム部25のゴム体積に
不均一があると、それを拡大するように、ゴムが流れ、
内核23の偏心を誘発する。従って、シーム部25のゴム体
積が少ないほど偏心誘発が少ないが、シーム部25のゴム
体積が少ないと開口し易い。そのため、シーム部25のゴ
ム体積の最適化を図る必要があり、上記テーパ６の傾斜
角度θ等を上述の如く設定することによって、このシー
ム部25のゴム体積の最適化を図ることができる。On the other hand, as shown in FIG. 6, when the outer half halves 22, 22 are overlapped with the dies 4, 4 having the taper 6 at the inner peripheral edge of the opening end of the concave portion 3 as in the present application, as shown in FIG. to, the preform S 1, the combined face seam 25 bulging outer flange shape (equatorial portion) is formed, even if the adhesive area over time becomes large, the portion thereof Do not open (open).
However, if the rubber volume of the seam portion 25 is uneven at the time of the vulcanizing press, the rubber flows so as to enlarge it,
Induces eccentricity of inner core 23. Accordingly, the smaller the rubber volume of the seam portion 25, the less the eccentricity is induced, but the smaller the rubber volume of the seam portion 25, the easier it is to open. Therefore, it is necessary to optimize the rubber volume of the seam portion 25, and the rubber volume of the seam portion 25 can be optimized by setting the inclination angle θ and the like of the taper 6 as described above.
【００２４】ところで、テーパ６の傾斜角度θが25°未
満や形成範囲が 2.0mm未満では、接着面積が不足して口
開きして偏心を誘発し、逆に、テーパ６の傾斜角度θが
30°以上や形成範囲が 8.0mmを越えれば、シーム部25の
ゴム体積過多となって、過剰なゴム流れとなって、偏心
を誘発する。If the inclination angle θ of the taper 6 is less than 25 ° or the formation range is less than 2.0 mm, the adhesive area is insufficient and the mouth opens to induce eccentricity.
If the angle is more than 30 ° or the forming range exceeds 8.0 mm, the rubber volume of the seam portion 25 becomes excessive, causing an excessive rubber flow and inducing eccentricity.
【００２５】なお、外層半割体22，22の接着面の剥離を
防ぐ方法としては、接着剤を使用したり、プレス加圧時
間の延長を図ることも考えられるが、接着剤の使用で
は、ばらつきの要因、工程数の増加、コスト上昇等の欠
点があり、プレス加圧時間の延長では、生産性が低下す
ることになる。As a method for preventing peeling of the bonding surfaces of the outer half halves 22, 22, it is conceivable to use an adhesive or to extend the press pressing time. There are drawbacks such as a factor of variation, an increase in the number of steps, an increase in cost, and the like.
【００２６】図５は、他の実施の形態を示し、この場
合、型４の凹部３の開口端内周縁に、第１テーパ17と第
２テーパ18とが形成されている。この場合、外径側の第
１テーパ17と内径側の第２テーパ18とは連続形成され、
第１テーパ17の傾斜角度θ1 を第２テーパ18の傾斜角度
θ2 より大とすると共に、第１テーパ17の傾斜角度θ1
を30°以上80°以下とする。また、この第１・第２テー
パ17，18の形成範囲としては、型４の合わせ面15から
0.5mm以上 8.0mm以下までの範囲とされる。FIG. 5 shows another embodiment. In this case, a first taper 17 and a second taper 18 are formed on the inner peripheral edge of the open end of the concave portion 3 of the mold 4. In this case, the first taper 17 on the outer diameter side and the second taper 18 on the inner diameter side are formed continuously,
The inclination angle theta 1 of the first taper 17 with a larger than the inclination angle theta 2 of the second taper 18, the inclination angle of the first taper 17 theta 1
Is set to 30 ° or more and 80 ° or less. The first and second tapers 17 and 18 are formed in a range from the mating surface 15 of the mold 4.
The range is from 0.5mm to 8.0mm.
【００２７】従って、この型４を使用しても、図６に示
すように、予備成形品Ｓ1 には、最適のゴム体積のシー
ム部25が形成される。ところで、第１テーパ17の傾斜角
度θ1 が30°未満や形成範囲が 0.5mm未満では、接着面
積が不足して口開きして偏心を誘発し、逆に、第１テー
パ17の傾斜角度θ1 が80°を越えたり形成範囲が 8.0mm
を越えれば、シーム部25のゴム体積過多となって、過剰
なゴム流れとなって、偏心を誘発する。また、第１テー
パ17の傾斜角度θ1 が第２テーパ18の傾斜角度θ2 より
小さければ、プレス加硫時の型締め時の開口部へのゴム
流れが過多となって偏心が生じる。[0027] Therefore, use of this type 4, as shown in FIG. 6, the preform S 1, seams 25 of the rubber volume of the optimum is formed. By the way, if the inclination angle θ 1 of the first taper 17 is less than 30 ° or the formation range is less than 0.5 mm, the adhesive area is insufficient and the mouth opens to induce eccentricity. 1 exceeds 80 ° or the forming range is 8.0mm
Exceeding, the rubber volume of the seam portion 25 becomes excessive, resulting in excessive rubber flow, which induces eccentricity. The inclination angle theta 1 of the first taper 17 is smaller than the inclination angle theta 2 of the second taper 18, eccentric becomes excessive rubber flow into the opening at the time of mold clamping press vulcanization occurs.
【００２８】しかして、使用される材料Ｓとしては、上
述の如く、熱による変形を招かず、ゴムの加硫を起こさ
ない範囲で加熱処理を施しているが、これによって、口
開きと偏心の著しい減少を図ることができた。ところ
で、この処理時間が加熱時間によって大きく異なるの
は、応力の緩和機構がポリマー分子運動の熱活性化を含
むためで、時間はアレニウス型に設定され、上述の如
く、２×２((140-X)/10)分とするのが好ましい。即ち、
140 ℃を越えれば、いわゆる焼けが生じ、40℃を下回る
と処理時間が長過ぎて生産性の低下を招き、また、時間
に関しては、２分を下回ると内部層まで十分熱が伝達さ
れず処理が不十分となり、逆に、35時間を越えると生産
性の低下を招くからである。As described above, the material S used is subjected to a heat treatment within a range that does not cause deformation due to heat and does not cause vulcanization of the rubber as described above. Significant reduction could be achieved. By the way, the treatment time greatly differs depending on the heating time because the stress relaxation mechanism includes thermal activation of the polymer molecular motion, and the time is set to an Arrhenius type, and as described above, 2 × 2 ((140− X) / 10) minutes. That is,
If the temperature exceeds 140 ° C., so-called burning occurs. If the temperature is lower than 40 ° C., the processing time is too long, causing a decrease in productivity. Is insufficient, and conversely, if it exceeds 35 hours, the productivity is reduced.
【００２９】ところで、この型４としては、型４の凹部
３の内面に、周方向溝を形成するも好ましい。これは、
型２と型４とで外層半割体22を形成した後、この型２，
４を開状態とした際、外層半割体22がより確実に型４側
に付着し、後工程の作業性を向上させることができるか
らである。Incidentally, as the mold 4, it is also preferable to form a circumferential groove on the inner surface of the concave portion 3 of the mold 4. this is,
After forming the outer layer half body 22 with the molds 2 and 4,
This is because when the cover 4 is in the open state, the outer layer half body 22 adheres more reliably to the mold 4 side, and the workability in the subsequent process can be improved.
【００３０】[0030]
【実施例】次に実施例を示す。即ち、表１の実施例１〜
実施例６に示すように、各種の型４を形成し、これらの
型４を使用してゴルフボールを形成して、口開き率
（％）、偏心量（mm）を調べた。この場合、各60個づつ
調べた。Next, an embodiment will be described. That is, Example 1 to Table 1
As shown in Example 6, various molds 4 were formed, golf balls were formed using these molds 4, and the opening ratio (%) and the amount of eccentricity (mm) were examined. In this case, each 60 pieces were examined.
【００３１】[0031]
【表１】 [Table 1]
【００３２】この表１において、テーパの欄で、１段と
は、一つのテーパ６が形成されている場合を示し、２段
とは、第１・第２テーパ17，18が形成されている場合を
示している。このように、各実施例１〜６においては、
ほとんど口開きが発生せず、かつ、偏心も僅かであっ
た。In Table 1, in the column of the taper, one step indicates the case where one taper 6 is formed, and the second step indicates that the first and second tapers 17 and 18 are formed. Shows the case. Thus, in each of Examples 1 to 6,
Almost no opening occurred, and eccentricity was slight.
【００３３】また、比較のため表２の比較例１〜比較例
６に示すように、各種の型を形成し、これらの型を使用
してゴルフボールを形成して、口開き率（％）、偏心量
（mm）を調べた。この場合、各60個づつ調べた。For comparison, as shown in Comparative Examples 1 to 6 in Table 2, various molds were formed, and golf balls were formed using these molds. And the amount of eccentricity (mm) was examined. In this case, each 60 pieces were examined.
【００３４】[0034]
【表２】 [Table 2]
【００３５】この表２から分かるように、比較例１で
は、テーパの傾斜角度が25°未満であるため、口開き率
が34％と多く、偏心量も0.51mmと大きく、比較例２で
は、テーパの傾斜角度が30°以上であるので、口開き率
が少ないが、偏心量が0.65mmと大きく、比較例３では、
第１テーパの傾斜角度が80°を越えているので、口開き
率が少ないが、偏心量が0.62mmと大きく、比較例４で
は、第１テーパの傾斜角度が30°未満でかつ第１テーパ
の傾斜角度より第２テーパの傾斜角度が大きいので、口
開き率が45％と多く、偏心量も0.55mmと大きく、比較例
５では、テーパの傾斜角度が25°未満でかつ材料の熱処
理が80℃で１分と短いため、口開き率が68％と多く、偏
心量も0.57mmと大きく、比較例６では、テーパの傾斜角
度が25°未満でかつ材料の熱処理が35℃で40時間である
ため、口開き率が42％と多く、偏心量も0.61mmと大きか
った。As can be seen from Table 2, in Comparative Example 1, since the taper inclination angle was less than 25 °, the opening ratio was as large as 34% and the eccentric amount was as large as 0.51 mm. Since the inclination angle of the taper is 30 ° or more, the opening ratio is small, but the eccentric amount is as large as 0.65 mm.
Since the inclination angle of the first taper exceeds 80 °, the opening ratio is small, but the eccentric amount is as large as 0.62 mm. In Comparative Example 4, the inclination angle of the first taper is less than 30 ° and the first taper is Since the inclination angle of the second taper is larger than the inclination angle of, the opening ratio is as large as 45% and the eccentric amount is as large as 0.55 mm. In Comparative Example 5, the inclination angle of the taper is less than 25 ° and the heat treatment of the material is not performed. Since it is as short as 1 minute at 80 ° C., the opening ratio is as large as 68% and the eccentricity is as large as 0.57 mm. In Comparative Example 6, the taper inclination angle is less than 25 ° and the heat treatment of the material is performed at 35 ° C. for 40 hours. Therefore, the opening ratio was as large as 42%, and the eccentricity was as large as 0.61 mm.
【００３６】[0036]
【発明の効果】本発明は上述の如く構成されているの
で、次に記載する効果を奏する。Since the present invention is configured as described above, the following effects can be obtained.
【００３７】 請求項１及び２記載のゴルフボール製
造装置によれば、予備成形後の接着面の剥離を防止で
き、しかも、内核の偏心を確実に防止でき、高品質のゴ
ルフボールを製造することができる。 請求項３記載
のゴルフボール製造装置によれば、均一な圧力で未加硫
層にて加硫済層を被覆することができ、口開きと偏心の
著しい減少を図ることができる。 請求項４及び５
記載のゴルフボール製造装置によれば、より確実に予備
成形後の接着面の剥離を防止でき、しかも、内核の偏心
を確実に防止できる。 請求項６，７，８及び９記載
のゴルフボール製造方法によれば、口開きと偏心の著し
い減少を、大きな装置を使用することなくゴルフボール
の製造を実現できる。 請求項８及び９記載のゴルフ
ボール製造方法によれば、ゴムのいわゆる焼けがなく、
しかも、作業時間も大とならず、作業性に優れる。
請求項６，７，８及び９記載のゴルフボール製造方法に
よれば、より確実に予備成形後の接着面の剥離を防止で
き、しかも、内核の偏心を確実に防止できる。According to the golf ball manufacturing apparatus of the first and second aspects, it is possible to prevent separation of the bonding surface after preforming, and also to reliably prevent eccentricity of the inner core, thereby manufacturing a high quality golf ball. Can be. According to the golf ball manufacturing apparatus of the third aspect, it is possible to cover the vulcanized layer with the unvulcanized layer at a uniform pressure, and it is possible to significantly reduce opening and eccentricity. Claims 4 and 5
According to the golf ball manufacturing apparatus described above, it is possible to more reliably prevent peeling of the bonded surface after preforming, and also reliably prevent eccentricity of the inner core. According to the golf ball manufacturing method according to the sixth, seventh, eighth, and ninth aspects , it is possible to realize the manufacturing of the golf ball without using a large apparatus, in which the opening and the eccentricity are significantly reduced. According to the golf ball manufacturing method of claims 8 and 9 , there is no so-called burn of rubber,
In addition, the working time does not increase and the workability is excellent.
According to the golf ball manufacturing methods of the sixth, seventh, eighth and ninth aspects, it is possible to more reliably prevent the peeling of the bonding surface after the preforming, and also to surely prevent the eccentricity of the inner core.
【図１】本発明に係るゴルフボール製造装置の要部簡略
断面図である。FIG. 1 is a simplified cross-sectional view of a main part of a golf ball manufacturing apparatus according to the present invention.
【図２】ゴルフボール製造方法を示す簡略図である。FIG. 2 is a simplified diagram showing a golf ball manufacturing method.
【図３】予備成形品の成形状態の断面図である。FIG. 3 is a sectional view of a preformed product in a molded state.
【図４】重合わせ機構の簡略図である。FIG. 4 is a simplified diagram of a superposition mechanism.
【図５】他のゴルフボール製造装置の要部断面簡略図で
ある。FIG. 5 is a simplified cross-sectional view of a main part of another golf ball manufacturing apparatus.
【図６】予備成形品の簡略図である。FIG. 6 is a simplified diagram of a preform.
【図７】比較のための製造方法を示す簡略図である。FIG. 7 is a simplified diagram showing a manufacturing method for comparison.
１ 凸部 ２ 型 ３ 凹部 ４ 型 ５ 金型 ６ テーパ ７ 重合わせ機構 15 合わせ面 17 第１テーパ 18 第２テーパ 20 外層半割体用金型 22 外層半割体 23 内核 Ｓ 材料 Ｓ1 予備成形品 θ 傾斜角度 θ1 傾斜角度 θ2 傾斜角度Reference Signs List 1 convex part 2 mold 3 concave part 4 mold 5 mold 6 taper 7 overlapping mechanism 15 mating surface 17 first taper 18 second taper 20 mold for outer layer half body 22 outer layer half body 23 inner core S material S 1 preforming goods theta angle of inclination theta 1 the inclination angle theta 2 tilt angle
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐野 英起 兵庫県神戸市中央区港島中町３−１−２ −２−423 (56)参考文献 特開 昭62−73932（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) A63B 45/00 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hideki Sano 3-1-2-2-423 Minatojima Nakamachi, Chuo-ku, Kobe-shi, Hyogo (56) References JP-A-62-73932 (JP, A) (58) ) Field surveyed (Int. Cl. 7 , DB name) A63B 45/00
Claims (9)
キャビティ内で半殻状の未加硫の一対の外層半割体22，
22を重合わせて加硫済内核23を包み込んで一体化する金
型５を備えたゴルフボール製造装置であって、上記金型
５が、重合わされる半球状の凹部３を有する一対の型
４，４を備え、かつ、該型４の凹部３の開口端内周縁
に、順次開口側に拡開するテーパ６を合わせ面15から
2.0mm以上 8.0mm以下までの範囲に設けると共に、該テ
ーパ６の傾斜角度θを25°以上30°未満としたことを特
徴とするゴルフボール製造装置。1. A pair of half shell-shaped unvulcanized outer layer halves 22, inside a cavity of a shape different from that of a vulcanization mold.
22. A golf ball manufacturing apparatus provided with a mold 5 that overlaps and integrates a vulcanized inner core 23 by superimposing the molds, wherein the mold 5 has a pair of molds 4 having hemispherical concave portions 3 to be polymerized. , 4, and a taper 6 that gradually expands toward the opening side is formed on the inner peripheral edge of the opening end of the concave portion 3 of the mold 4 from the mating surface 15.
A golf ball manufacturing apparatus provided in a range of 2.0 mm or more and 8.0 mm or less, and an inclination angle θ of the taper 6 is set to 25 ° or more and less than 30 °.
キャビティ内で半殻状の未加硫の一対の外層半割体22，
22を重合わせて加硫済内核23を包み込んで一体化する金
型５を備えたゴルフボール製造装置であって、上記金型
５が、重合わされる半球状の凹部３を有する一対の型
４，４を備え、かつ、該型４の凹部３の開口端内周縁
に、順次開口側に拡開すると共に連続する第１・第２テ
ーパ17，18を合わせ面15から 0.5mm以上 8.0mm以下まで
の範囲に設けると共に、外径側の第１テーパ17の傾斜角
度θ1 を内径側の第２テーパ18の傾斜角度θ2 より大と
し、さらに、該第１テーパ17の傾斜角度θ1 を30°以上
80°以下としたことを特徴とするゴルフボール製造装
置。2. A pair of half shell-shaped unvulcanized outer layer halves 22, inside a cavity having a different shape from a cavity of a vulcanization mold.
22. A golf ball manufacturing apparatus provided with a mold 5 that overlaps and integrates a vulcanized inner core 23 by superimposing the molds, wherein the mold 5 has a pair of molds 4 having hemispherical concave portions 3 to be polymerized. , 4 and a first and a second taper 17, 18 which are successively expanded toward the opening side and continuous with the inner peripheral edge of the opening end of the concave portion 3 of the mold 4 from the mating surface 15 to 0.5 mm or more and 8.0 mm or less. provided with a range of up to a large city than the inclination angle theta 2 of the second taper 18 of the inclination angle theta 1 to the inner diameter side of the first taper 17 on the outer diameter side, further, the inclination angle theta 1 of the first taper 17 30 ° or more
A golf ball manufacturing apparatus characterized in that the angle is set to 80 ° or less.
キャビティ内で半殻状の未加硫の一対の外層半割体22，
22を重合わせて加硫済内核23を包み込んで一体化する金
型５を備えたゴルフボール製造装置であって、半殻状の
未加硫の外層半割体22が装着される半球状の凹部３を有
する一対の型４，４と、外層半割体22に加硫済内核23が
投入されていない一方の型４を加硫済内核23が投入され
ている他方の型４に対して鉛直方向に沿って下降させて
該一対の型４，４を重合わせる重合わせ機構７と、を備
えたゴルフボール製造装置。3. A half shell-shaped unvulcanized pair of outer half halves 22, inside a cavity which is different from the cavity of the vulcanization mold.
22. A golf ball manufacturing apparatus provided with a mold 5 which overlaps a vulcanized inner core 23 by superimposing 22 to form a hemispherical shape on which a half-shell unvulcanized outer layer half 22 is mounted. A pair of molds 4 and 4 having the concave portion 3 and one mold 4 in which the vulcanized inner core 23 is not charged into the outer half half body 22 are moved to the other mold 4 in which the vulcanized inner core 23 is charged. A golf ball manufacturing apparatus, comprising: a weighing mechanism 7 that lowers the pair of dies 4 and 4 by vertically descending.
キャビティ内で半殻状の未加硫の一対の外層半割体22，
22を重合わせて加硫済内核23を包み込んで一体化する金
型５を備えたゴルフボール製造装置であって、半殻状の
未加硫の外層半割体22が装着される半球状の凹部３を有
する一対の型４，４と、外層半割体22に加硫済内核23が
投入されていない一方の型４を加硫済内核23が投入され
ている他方の型４に対して鉛直方向に沿って下降させて
該一対の型４，４を重合わせる重合わせ機構７と、を備
え、かつ、上記型４の凹部３の開口端内周縁に、順次開
口側に拡開するテーパ６を合わせ面15から 2.0mm以上
8.0mm以下までの範囲に設けると共に、該テーパ６の傾
斜角度θを25°以上30°未満としたことを特徴とするゴ
ルフボール製造装置。4. A pair of half-shell unvulcanized outer layer halves 22, inside a cavity of a shape different from the cavity of the vulcanization mold.
22. A golf ball manufacturing apparatus provided with a mold 5 which overlaps a vulcanized inner core 23 by superimposing 22 to form a hemispherical shape on which a half-shell unvulcanized outer layer half 22 is mounted. A pair of molds 4 and 4 having the concave portion 3 and one mold 4 in which the vulcanized inner core 23 is not charged into the outer half half body 22 are moved to the other mold 4 in which the vulcanized inner core 23 is charged. And a weighing mechanism 7 for lowering the pair of dies 4 and 4 in a vertical direction, and a taper gradually expanding toward the opening at the inner peripheral edge of the opening end of the concave portion 3 of the dies 4. 6 is more than 2.0mm from mating surface 15
A golf ball manufacturing apparatus provided in a range up to 8.0 mm or less, and wherein the inclination angle θ of the taper 6 is set to 25 ° or more and less than 30 °.
キャビティ内で半殻状の未加硫の一対の外層半割体22，
22を重合わせて加硫済内核23を包み込んで一体化する金
型５を備えたゴルフボール製造装置であって、半殻状の
未加硫の外層半割体22が装着される半球状の凹部３を有
する一対の型４，４と、外層半割体22に加硫済内核23が
投入されていない一方の型４を加硫済内核23が投入され
ている他方の型４に対して鉛直方向に沿って下降させて
該一対の型４，４を重合わせる重合わせ機構７と、を備
え、かつ、上記型４の凹部３の開口端内周縁に、順次開
口側に拡開すると共に連続する第１・第２テーパ17，18
を合わせ面15から 0.5mm以上 8.0mm以下までの範囲に設
けると共に、外径側の第１テーパ17の傾斜角度θ1 を内
径側の第２テーパ18の傾斜角度θ2 より大とし、さら
に、該第１テーパ17の傾斜角度θ1 を30°以上80°以下
としたことを特徴とするゴルフボール製造装置。5. A pair of half shell-shaped unvulcanized outer layer halves 22, inside a cavity shaped differently from the cavity of the vulcanization mold.
22. A golf ball manufacturing apparatus provided with a mold 5 which overlaps a vulcanized inner core 23 by superimposing 22 to form a hemispherical shape on which a half-shell unvulcanized outer layer half 22 is mounted. A pair of molds 4 and 4 having the concave portion 3 and one mold 4 in which the vulcanized inner core 23 is not charged into the outer half half body 22 are moved to the other mold 4 in which the vulcanized inner core 23 is charged. A stacking mechanism 7 for lowering the pair of dies 4 and 4 in a vertical direction to overlap the pair of dies 4, 4, and sequentially expanding toward the opening side on the inner peripheral edge of the opening end of the concave portion 3 of the die 4. Continuous first and second taper 17, 18
In the range of 0.5 mm or more and 8.0 mm or less from the mating surface 15, the inclination angle θ 1 of the first taper 17 on the outer diameter side is made larger than the inclination angle θ 2 of the second taper 18 on the inner diameter side, the golf ball manufacturing apparatus is characterized in that the inclination angle theta 1 of the first taper 17 and 30 ° or more than 80 °.
２分から35時間加熱した後、半球状の凸部１を有する第
１の型２と半球状の凹部３を有する第２の型４とを備え
た外層半割体用金型20に、上記材料Ｓを投入して、半殻
状の未加硫の外層半割体22を一対形成し、次に、上記第
２の型４の凹部３に外層半割体22を付着させたままで、
該外層半割体22の何方か一方に、加硫済内核23を投入し
て、該一対の外層半割体22を重ね合わせて予備成形品Ｓ
1 を形成し、その後、該予備成形品Ｓ1 を加硫成形用金
型にて加硫成形するゴルフボール製造方法であって、上
記凹部３の開口端内周縁に順次開口側に拡開するテーパ
６を合わせ面15から2.0mm以上 8.0mm以下までの範囲に
設けると共に該テーパ６の傾斜角度θを25°以上30°未
満とした金型５を使用して、一対の外層半割体22，22を
重ね合わせることを特徴とするゴルフボール製造方法。6. A first mold 2 having a hemispherical convex portion 1 and a second mold having a hemispherical concave portion 3 after heating a raw material S made of raw rubber at 40 ° C. to 140 ° C. for 2 minutes to 35 hours. The material S is charged into an outer layer half mold 20 having a half shell 4 and a pair of unshelled unvulcanized outer layer halves 22 are formed. With the outer layer half 22 adhered to the concave portion 3 of
Someone one of the outer layer half body 22, the vulcanized inner core 23 and turned preform combined overlapping the pair of outer halves 22 S
1 is formed, then, a golf ball manufacturing method of vulcanization molding the preform S 1 at mold for vulcanization molding, the upper
Taper gradually expanding toward the opening side at the inner peripheral edge of the opening end of the concave portion 3
6 from the mating surface 15 to 2.0mm or more and 8.0mm or less
And the inclination angle θ of the taper 6 is not less than 25 ° and not more than 30 °.
Using a full mold 5, a pair of outer half halves 22
A method of manufacturing a golf ball, comprising superimposing .
２分から35時間 加熱した後、半球状の凸部１を有する第
１の型２と半球状の凹部３を有する第２の型４とを備え
た外層半割体用金型20に、上記材料Ｓを投入して、半殻
状の未加硫の外層半割体22を一対形成し、次に、上記第
２の型４の凹部３に外層半割体22を付着させたままで、
該外層半割体22の何方か一方に、加硫済内核23を投入し
て、該一対の外層半割体22を重ね合わせて予備成形品Ｓ
1 を形成し、その後、該予備成形品Ｓ 1 を加硫成形用金
型にて加硫成形するゴルフボール製造方法であって、上
記凹部３の開口端内周縁に順次開口側に拡開すると共に
連続する第１・第２テーパ17，18を合わせ面15から 0.5
mm以上 8.0mm以下までの範囲に設けると共に外径側の第
１テーパ17の傾斜角度θ 1 を内径側の第２テーパ18の傾
斜角度θ 2 より大としさらに該第１テーパ17の傾斜角度
θ 1 を30°以上80°以下とした金型５を使用して、一対
の外層半割体22，22を重ね合わせることを特徴とするゴ
ルフボール製造方法。7. A material S made of raw rubber is heated at 40 ° C. to 140 ° C.
After heating for 2 minutes to 35 hours, the second
And a second mold 4 having a hemispherical concave portion 3.
The above-mentioned material S is put into the outer layer half mold 20 for half shell.
A pair of unvulcanized outer layer halves 22 in the shape of
With the outer layer half 22 adhered to the concave portion 3 of the second mold 4,
A vulcanized inner core 23 is charged into one of the outer half halves 22.
Then, the pair of outer layer halves 22 are overlapped to form a preformed product S
1 and then the preformed product S 1 is vulcanized
A method of manufacturing a golf ball by vulcanization molding with a mold,
The opening 3 is gradually expanded toward the opening at the inner peripheral edge of the opening end of the concave portion 3.
Consecutive first and second tapers 17 and 18 are separated from mating surface 15 by 0.5
mm and 8.0 mm or less and the outer diameter side
The inclination angle θ 1 of one taper 17 is changed to the inclination of the second taper 18 on the inner diameter side.
Greater than the inclination angle θ 2 and the inclination angle of the first taper 17
Using a mold 5 with θ 1 of 30 ° or more and 80 ° or less,
A golf ball manufacturing method, wherein outer half halves 22, 22 are superimposed .
熱温度をＸとしたときに、２×２ ((140-X)/10) 分とし
て、上記生ゴムからなる材料Ｓを、40℃〜140 ℃の範囲
の加熱温度Ｘで加熱した後、半球状の凸部１を有する第
１の型２と半球状の凹部３を有する第２の型４とを備え
た外層半割体用金型20に、上記材料Ｓを投入して、半殻
状の未加硫の外層半割体22を一対形成し、次に、上記第
２の型４の凹部３に外層半割体22を付着させたままで、
該外層半割体22の何方か一方に、加硫済内核23を投入し
て、該一対の外層半割体22を重ね合わせて予備成形品Ｓ
1 を形成し、その後、該予備成形品Ｓ 1 を加硫成形用金
型にて加硫成形するゴルフボール製造方法であって、上
記凹部３の開口端内周縁に順次開口側に拡開するテーパ
６を合わせ面15から 2.0mm以上 8.0mm以下までの範囲に
設けると共に該テーパ６の傾斜角度θを25°以上30°未
満とした金型５を使用して、一対の外層半割体22，22を
重ね合わせることを特徴とするゴルフボール製造方法。8. The heating time is added to the raw material S made of raw rubber.
When the heat temperature is X, it is 2 × 2 ((140-X) / 10) minutes
And the raw material S made of the raw rubber in the range of 40 ° C to 140 ° C.
After heating at the heating temperature X, the second having the hemispherical convex portion 1
And a second mold 4 having a hemispherical concave portion 3.
The above-mentioned material S is put into the outer layer half mold 20 for half shell.
A pair of unvulcanized outer layer halves 22 in the shape of
With the outer layer half 22 adhered to the concave portion 3 of the second mold 4,
A vulcanized inner core 23 is charged into one of the outer half halves 22.
Then, the pair of outer layer halves 22 are overlapped to form a preformed product S
1 and then the preformed product S 1 is vulcanized
A method of manufacturing a golf ball by vulcanization molding with a mold,
And 25 ° or less than 30 ° angle of inclination θ of the taper 6 is provided on the range from the mating surface 15 of the tapered 6 to 2.0mm or 8.0mm or less for expanding sequentially on the opening side to the opening end inner peripheral edge of the serial recess 3 the mold 5 using a golf ball manufacturing method characterized by combining it heavy <br/> a pair of outer halves 22, 22.
熱温度をＸとしたときに、２×２ ((140-X)/10) 分とし
て、上記生ゴムからなる材料Ｓを、40℃〜140 ℃の範囲
の加熱温度Ｘで加熱した後、半球状の凸部１を有する第
１の型２と半球状の凹部３を有する第２の型４とを備え
た外層半割体用金型20に、上記材料Ｓを投入して、半殻
状の未加硫の外層半割体22を一対形成し、次に、上記第
２の 型４の凹部３に外層半割体22を付着させたままで、
該外層半割体22の何方か一方に、加硫済内核23を投入し
て、該一対の外層半割体22を重ね合わせて予備成形品Ｓ
1 を形成し、その後、該予備成形品Ｓ 1 を加硫成形用金
型にて加硫成形するゴルフボール製造方法であって、上
記凹部３の開口端内周縁に順次開口側に拡開すると共に
連続する第１・第２テーパ17，18を合わせ面15から 0.5
mm以上 8.0mm以下までの範囲に設けると共に外径側の第
１テーパ17の傾斜角度θ1 を内径側の第２テーパ18の傾
斜角度θ2 より大としさらに該第１テーパ17の傾斜角度
θ1 を30°以上80°以下とした金型５を使用して、一対
の外層半割体22，22を重ね合わせることを特徴とするゴ
ルフボール製造方法。9. The heating time is added to the raw material S made of raw rubber.
When the heat temperature is X, it is 2 × 2 ((140-X) / 10) minutes
And the raw material S made of the raw rubber in the range of 40 ° C to 140 ° C.
After heating at the heating temperature X, the second having the hemispherical convex portion 1
And a second mold 4 having a hemispherical concave portion 3.
The above-mentioned material S is put into the outer layer half mold 20 for half shell.
A pair of unvulcanized outer layer halves 22 in the shape of
With the outer layer half 22 adhered to the concave portion 3 of the second mold 4,
A vulcanized inner core 23 is charged into one of the outer half halves 22.
Then, the pair of outer layer halves 22 are overlapped to form a preformed product S
1 and then the preformed product S 1 is vulcanized
A method of manufacturing a golf ball by vulcanization molding with a mold,
From the first and second tapered 17, 18 a mating surface 15 continuous with diverging sequentially on the opening side to the opening end inner peripheral edge of the serial recess 3 0.5
mm and 8.0 mm or less, and the inclination angle θ 1 of the first taper 17 on the outer diameter side is made larger than the inclination angle θ 2 of the second taper 18 on the inner diameter side, and the inclination angle θ of the first taper 17 is further increased. 1 using the mold 5 and than 80 ° more than 30 °, Gore <br/> Rufuboru manufacturing method characterized by combining it heavy a pair of outer halves 22, 22.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28143096A JP3145319B2 (en) | 1996-10-01 | 1996-10-01 | Golf ball manufacturing apparatus and manufacturing method |
| US08/890,990 US6036907A (en) | 1996-01-10 | 1997-07-10 | Method for manufacturing a golf ball with an initial preparatory form having a seam |
| AU28623/97A AU722402C (en) | 1996-07-12 | 1997-07-11 | Apparatus and method for manufacturing golf ball |
| US09/487,894 US6428299B1 (en) | 1996-07-12 | 2000-01-19 | Apparatus for manufacturing a golf ball with an initial preparatory form having a seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28143096A JP3145319B2 (en) | 1996-10-01 | 1996-10-01 | Golf ball manufacturing apparatus and manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1099470A JPH1099470A (en) | 1998-04-21 |
| JP3145319B2 true JP3145319B2 (en) | 2001-03-12 |
Family
ID=17639062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28143096A Expired - Fee Related JP3145319B2 (en) | 1996-01-10 | 1996-10-01 | Golf ball manufacturing apparatus and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3145319B2 (en) |
-
1996
- 1996-10-01 JP JP28143096A patent/JP3145319B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1099470A (en) | 1998-04-21 |
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