JP4872440B2 - Method for manufacturing vulcanization mold for spike tire - Google Patents
Method for manufacturing vulcanization mold for spike tire Download PDFInfo
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- JP4872440B2 JP4872440B2 JP2006117679A JP2006117679A JP4872440B2 JP 4872440 B2 JP4872440 B2 JP 4872440B2 JP 2006117679 A JP2006117679 A JP 2006117679A JP 2006117679 A JP2006117679 A JP 2006117679A JP 4872440 B2 JP4872440 B2 JP 4872440B2
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- pin
- spike
- mold
- vulcanization
- screw
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- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Description
本発明は、スパイクタイヤ用加硫成形金型の製造方法に関し、さらに詳しくは、トレッドにスパイクピンを装填するための小孔を多数有するスパイクタイヤを加硫するスパイクタイヤ用加硫成形金型の製造方法に関する。 The present invention relates to a method for producing a spike tire vulcanization mold, and more particularly, to a spike tire vulcanization mold for vulcanizing a spike tire having a large number of small holes for loading spike pins into a tread. It relates to a manufacturing method.
氷雪路面用のスパイクタイヤは、トレッドにスパイクピンを打込むための多数の小孔が予め成形されており、その小孔に所望本数のスパイクピンを打込んで使用される。 A spike tire for an ice and snow road surface has a large number of small holes formed in advance for driving spike pins into the tread, and a desired number of spike pins are driven into the small holes for use.
このようなスパイクタイヤ用の加硫成形金型では、スパイクピン打込み孔を成形するモールドピンは、カシメだけではタイヤ離型時に離脱してしまうことがあるため、トレッド成形面にねじ込みにより植込むのが一般的である(例えば、特許文献1参照)。 In such a vulcanization mold for spike tires, the mold pin for forming the spike pin driving hole may be detached when the tire is released by caulking alone, so it is implanted by screwing into the tread molding surface. Is common (see, for example, Patent Document 1).
図4は、特許文献1に開示されたスパイクタイヤ用加硫成形金型に使用されるモールドピンを示す。このモールドピン1は、スパイクピン打込み孔の成形部を形成するピン部1aに対して、その軸方向の端部に外形が六角形のねじ込み工具を係号させる係号部1cとトレッド成形面10に植込むネジ部1bbとを一体に形成している。
FIG. 4 shows a mold pin used in the vulcanization mold for spike tire disclosed in
このモールドピン1を、ねじ込み工具により係止部1cにトルクを与えながらトレッド成形面10のネジ孔2にネジ部1bbを螺合させると、最後に、図5に示すように係止部1cがトレッド成形面10に当接状態になって埴立される。したがって、この加硫成形金型で成形されたタイヤには、係止部1cに対応する凹みがスパイクピン打込み孔の周囲に形成されるため、その凹みがトレッドの外観を損ねるばかりでなく、スパイク性能に悪影響を及ぼすことになる。
本発明の目的は、トレッドに形成するスパイクピン打込み孔の周りに凹みを生じさせないスパイクタイヤの成形を可能にするスパイクタイヤ用加硫成形金型の製造方法を提供することにある。 An object of the present invention is to provide a method for producing a vulcanization molding die for spike tires that enables the formation of spike tires that do not cause dents around spike pin driving holes formed in the tread.
上記目的を達成するための本発明のスパイクタイヤ用加硫成形金型の製造方法は、スパイクピン打込み孔の成形部であるピン部とネジ部をもつ植込み部との間にねじ込み工具係合用の係止部を設けたモールドピンを、トレッド成形面に設けたネジ孔に前記ネジ部を螺合させて埴立するスパイクタイヤ用加硫成形金型の製造方法において、前記モールドピンのねじ込み工具係合用の係止部を前記ピン部の周囲に隙間を介して小突起を配置した構成にし、該モールドピンを前記トレッド成形面のネジ孔に前記ネジ部を螺合させて埴立した後、前記係止部の小突起を前記トレッド成形面と同一面になるように除去することを特徴とする。 In order to achieve the above object, a method for manufacturing a vulcanization molding die for spike tires according to the present invention is provided for engaging a screwing tool between a pin portion which is a forming portion of a spike pin driving hole and an implanted portion having a screw portion. In a manufacturing method of a vulcanization mold for spike tires, in which a mold pin provided with a locking part is erected by screwing the screw part into a screw hole provided on a tread molding surface, The combination locking portion has a configuration in which small protrusions are arranged around the pin portion via a gap, and the mold pin is erected by screwing the screw portion into the screw hole of the tread molding surface, The small protrusion of the locking portion is removed so as to be flush with the tread molding surface.
本発明のスパイクタイヤ用加硫成形金型の製造方法によれば、ねじ込み工具係合用の係止部をピン部の周囲に隙間を介して小突起を配置するように形成し、モールドピンをトレッド成形面のネジ孔に埴立した後、その小突起をトレッド成形面と同一面になるように除去するので、このスパイクタイヤ用加硫成形金型を使用して加硫成形したタイヤには、スパイクピン打込み孔の周りに凹みが形成されず、タイヤ外観を損ねたり走行時のスパイク性能に悪影響を与えないようにすることができる。 According to the method for manufacturing a spike tire vulcanization molding die of the present invention, the locking portion for engaging the screwing tool is formed so that the small protrusions are arranged around the pin portion with a gap therebetween, and the mold pin is treaded. After standing up on the screw hole on the molding surface, the small protrusions are removed so that they are flush with the tread molding surface, so the tires vulcanized and molded using this spike tire vulcanization mold are: A dent is not formed around the spike pin driving hole, so that the appearance of the tire is not damaged or the spike performance during running is not adversely affected.
図1は、本発明の製造方法に使用するモールドピンの一例を示す。 FIG. 1 shows an example of a mold pin used in the manufacturing method of the present invention.
図1において、モールドピン1は、スパイクピン打込み孔の成形部となる、ピン部1aに対して、その軸方向の端部に金型のトレッド成形面に埋設される植込み部1bを一体に連接している。植込み部1bは、ピン部1a側にピン部1aよりも径の大きいロッド部1baを有し、その端部にネジ部1bbを形成した構成になっている。そのロッド部1baの端面上にピン部1aを隙間を介して囲むように4個の小突起1dが形成され、これら小突起1dによりねじ込み工具が係号する係止部1cを構成している。植込み部1bのロッド部1baは、その直径を、ピン部1aよりも大きくすることにより、加硫後のタイヤを金型から抜き出すときにモールドピン1にかかる曲げ荷重を分散させモールドピン1の耐久性を向上させる。
In FIG. 1, the
小突起1dはねじ込み工具用の係止部1cを形成するため、偶数個をピン部1aの軸心を挟んで対称に配置するとよい。すなわち、偶数個の小突起1dがピン部1aを中心にして正四角形や正六角形の配置にするとよい。
Since the
偶数個の小突起1dの形状や配置としては、上記の対称な配置をすれば特に限定されるものではなく、例えば、図3(A)(B)に示すような形状や配置を例示することができる。
The shape and arrangement of the even number of
小突起1dのロッド部1baの端面からの軸方向高さhは、好ましくは0.5〜2mmであり、より好ましくは0.5〜1.5mmにするとよい。高さhが、0.5mm未満であるとソケットレンチ等のねじ込み工具を使用する際の作業性が低下する。高さhが、2mmを超えるとピンを固定した後に切削等により除去する労力が増大し好ましくない。
The axial height h of the
上述したモールドピン1は、図2に示すように、金型のトレッド成形面10に設けたネジ孔2に、植込み部1bのネジ部1bbを螺合させることにより埴立させる。ねじ込みは、ねじ込み工具を係止部1cに係号させて行う。
As shown in FIG. 2, the
図2(A)のように、モールドピン1をトレッド成形面10のネジ孔2に固定した後、係止部1cの小突起1dを切削工具などにより除去し、ロッド部1baの端面とトレッド成形面10とが同一面になるようにする。小突起1dを除去後の表面は、必要により研磨加工によりスムーズな金型表面にすることが望ましい。
2A, after fixing the
このようにして製造されたスパイクタイヤ用加硫成形金型は、モールドピンの根元に段差や突出部が形成されていない。このため、このスパイクタイヤ用加硫成形金型を使用して加硫したスパイクタイヤは、スパイクピン打込み孔の周りに凹みが形成されることはない。したがって、スパイクピンを小孔に打ち込んだ後のタイヤ外観を損ねたり走行時のスパイク性能に悪影響を与ることはない In the vulcanization molding die for spike tires manufactured in this way, no step or protrusion is formed at the base of the mold pin. For this reason, the spike tire vulcanized using this spike tire vulcanization mold does not have a dent formed around the spike pin driving hole. Therefore, the appearance of the tire after the spike pin is driven into the small hole is not damaged, and the spike performance during running is not adversely affected.
1 モールドピン
1a ピン部
1b 植込み部
1ba ロッド部
1bb ネジ部
1c 係止部
1d 小突起
2 ネジ孔
10 トレッド成形面
DESCRIPTION OF
Claims (4)
前記モールドピンのねじ込み工具係合用の係止部を前記ピン部の周囲に隙間を介して小突起を配置した構成にし、該モールドピンを前記トレッド成形面のネジ孔に前記ネジ部を螺合させて埴立した後、前記係止部の小突起を前記トレッド成形面と同一面になるように除去するスパイクタイヤ用加硫成形金型の製造方法。 A mold pin provided with a locking portion for engaging a screwing tool between a pin portion which is a forming portion of a spike pin driving hole and an implanted portion having a screw portion, and the screw portion in a screw hole provided on a tread forming surface. In the method of manufacturing a vulcanization mold for spike tires that are screwed up and standing up,
The locking portion for engaging the tool for screwing the mold pin has a configuration in which small protrusions are arranged around the pin portion via a gap, and the screw portion is screwed into the screw hole of the tread molding surface. A method for producing a vulcanization molding die for spike tires, in which after the upright standing, the small protrusions of the locking portion are removed so as to be flush with the tread molding surface.
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JP2006117679A JP4872440B2 (en) | 2006-04-21 | 2006-04-21 | Method for manufacturing vulcanization mold for spike tire |
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JP2006117679A JP4872440B2 (en) | 2006-04-21 | 2006-04-21 | Method for manufacturing vulcanization mold for spike tire |
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JP4872440B2 true JP4872440B2 (en) | 2012-02-08 |
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JP2006117679A Expired - Fee Related JP4872440B2 (en) | 2006-04-21 | 2006-04-21 | Method for manufacturing vulcanization mold for spike tire |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101000801B1 (en) | 2008-11-11 | 2010-12-13 | 주식회사 엠케이테크놀로지 | The under mold for multi |
JP5855612B2 (en) * | 2013-07-23 | 2016-02-09 | 住友ゴム工業株式会社 | Spike tire mold |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57189833A (en) * | 1981-05-19 | 1982-11-22 | Hitachi Ltd | Composite molding process of metallic sheet and resin |
JPS5851134A (en) * | 1981-09-21 | 1983-03-25 | Sumitomo Rubber Ind Ltd | Manufacture of spike tire |
JPS6048410A (en) * | 1983-08-25 | 1985-03-16 | Matsushita Electric Ind Co Ltd | Pulse burner |
JPS62275807A (en) * | 1986-05-22 | 1987-11-30 | Bridgestone Corp | Manufacture of spile tire and spike tire driving small hole |
JPH01208203A (en) * | 1988-02-16 | 1989-08-22 | Yokohama Rubber Co Ltd:The | Manufacture of spike tire and tread member thereof |
JP2838075B2 (en) * | 1996-08-08 | 1998-12-16 | 株式会社ユニオートオール | Non-slip pins and vehicle tires fitted with non-slip pins |
ATE260753T1 (en) * | 1999-05-26 | 2004-03-15 | Pirelli | METHOD FOR PRODUCING A STUDD TIRE AND MOLDING TOOL THEREOF |
JP2001253214A (en) * | 2000-03-13 | 2001-09-18 | Yamada Shingijutsu Kenkyusho Kk | Spike pin for tire |
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