JPH04353431A - Sipe blade for forming pneumatic tire - Google Patents
Sipe blade for forming pneumatic tireInfo
- Publication number
- JPH04353431A JPH04353431A JP3129940A JP12994091A JPH04353431A JP H04353431 A JPH04353431 A JP H04353431A JP 3129940 A JP3129940 A JP 3129940A JP 12994091 A JP12994091 A JP 12994091A JP H04353431 A JPH04353431 A JP H04353431A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- sipe
- bent
- blades
- branch
- 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.)
- Granted
Links
- 238000005452 bending Methods 0.000 claims description 7
- 238000006116 polymerization reaction Methods 0.000 description 8
- 210000000988 bone and bone Anatomy 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000003657 drainage water Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
- B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
- B60C11/1218—Three-dimensional shape with regard to depth and extending direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0606—Vulcanising moulds not integral with vulcanising presses
- B29D2030/0607—Constructional features of the moulds
- B29D2030/0613—Means, e.g. sipes or blade-like elements, for forming narrow recesses in the tyres, e.g. cuts or incisions for winter tyres
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Tyre Moulding (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は空気入りタイヤ成形用
サイプブレードにおいて特に分岐ブレードを有するサイ
プブレードの改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to improvements in sipe blades for forming pneumatic tires, particularly sipe blades having branched blades.
【０００２】0002
【従来の技術】従来、タイヤの踏面部に分岐構造のサイ
プを形成する場合、一般的には、図５に示す様に、サイ
プブレード１５を金型（図示せず）に取り付ける際、同
時に別個独立の分岐ブレード１６をこのサイプブレード
１５の側面に突き合わせて取り付け加硫成形していた。[Prior Art] Conventionally, when forming a branched sipe on the tread of a tire, generally, as shown in FIG. 5, when attaching a sipe blade 15 to a mold (not shown), a separate An independent branch blade 16 was attached to the side surface of this sipe blade 15 and vulcanized.
【０００３】また、図６に示す様に、サイプブレード１
７に形成した骨１８に分岐サイプ１９を埋め込み、この
サイプブレード１７を金型（図示せず）に取り付けて分
岐構造のサイプを成形する技術も提案されている。[0003] Furthermore, as shown in FIG.
A technique has also been proposed in which a branched sipe 19 is embedded in the bone 18 formed in the section 7, and this sipe blade 17 is attached to a mold (not shown) to form a branched sipe.
【０００４】また特殊なものとしては、図７に示す様に
、アルミニウム等の金属からなる意匠部鋳造モールド（
図示せず）にサイプブレード２０とともに直接分岐サイ
プ２１を鋳出す技術がある。In addition, as a special type, as shown in FIG. 7, there is a design part casting mold made of metal such as aluminum (
There is a technique (not shown) in which the branch sipe 21 is directly cast together with the sipe blade 20.
【０００５】[0005]
【発明が解決しようとする課題】しかし突き合わせタイ
プのサイプブレード１５では、突合わせ部分にどうして
も間隙が生じることから、タイヤを成形した場合、当該
突合わせ部分にゴムが入り込み、その部分に薄いゴム膜
が生じるもので、従って加硫成形後のサイプに連通性が
なくなり、サイプ本来の集排水効果が望めない点で好ま
しくなかった。無論分岐ブレード１６をサイプブレード
１５の側面に個別に溶接、ロウ付け等して連続化するこ
とも考えられるが、この連続化したサイプブレードを多
数製作するとなると、加工が困難であることはいうに及
ばず、きわめて高価となる。[Problems to be Solved by the Invention] However, in the butt type sipe blade 15, a gap inevitably occurs at the butt part, so when a tire is molded, rubber gets into the butt part and a thin rubber film is formed in that part. This was undesirable in that the sipes after vulcanization and molding lacked continuity, and the drainage water collection effect inherent to the sipes could not be expected. Of course, it is possible to make the branch blades 16 continuous by individually welding, brazing, etc. to the side surface of the sipe blade 15, but it goes without saying that it would be difficult to process if a large number of continuous sipe blades were to be manufactured. It is extremely expensive.
【０００６】一方、埋め込みタイプのサイプブレード１
７では、骨１８に分岐ブレード１９を埋め込まなければ
ならないことから、サイプブレード１７においてその埋
め込みのための面積をかなり必要とし、このことは成形
タイヤの踏面部におけるゴム容量をかなり減じなければ
ならなくなってタイヤ性能上問題があり、また多数の骨
１８をサイプブレード１７に形成する必要があるので、
加工上高価とならざるを得ない。またタイヤの意匠面で
も制約を受ける。On the other hand, embedded type sipe blade 1
7, since the branching blade 19 must be embedded in the bone 18, a considerable area is required for embedding it in the sipe blade 17, which requires a considerable reduction in the rubber capacity in the tread portion of the molded tire. This causes problems in terms of tire performance, and it is necessary to form a large number of bones 18 on the sipe blade 17.
It has to be expensive to process. There are also restrictions on the design of tires.
【０００７】鋳出しタイプでは、湯流れの点から制限を
受け、薄いブレードとするには、厚みの２倍程度の深さ
のものしか得られず、実質的にサイプブレードとしての
機能が果たせない問題点がある。[0007] The casting type is limited by the flow of the molten metal, and in order to make a thin blade, it is only possible to obtain a blade with a depth of about twice the thickness, and it cannot actually function as a sipe blade. There is a problem.
【０００８】この発明の目的は、連通性がよく、集排水
性が良好であるサイプを形成することができるとともに
、サイプの深さや長さ、分岐の数、分岐角度等を任意に
選択でき、所望構造のサイプを簡単に成形することがで
き、加工性にすぐれた空気入りタイヤ成形用サイプブレ
ードを提供する点にある。[0008] An object of the present invention is to be able to form a sipe that has good communication and good water collection properties, and also to be able to arbitrarily select the depth and length of the sipe, the number of branches, the branch angle, etc. An object of the present invention is to provide a sipe blade for forming a pneumatic tire that can easily form a sipe of a desired structure and has excellent workability.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
鋭意検討した結果、この発明はサイプブレードとして複
数の薄板を重合部で互いに重ね合わせた積層構造のブレ
ードを採用し、しかもそのうちの少なくとも１枚の薄板
を、当該重ね合わされた薄板の重合部より分岐方向に連
続的に折れ曲る屈曲部を備えた分岐ブレードとしたもの
である。[Means for Solving the Problems] As a result of intensive studies to achieve the above object, the present invention adopts a blade having a laminated structure in which a plurality of thin plates are overlapped with each other at the overlapped part as a sipe blade, and moreover, at least one of them The two thin plates are made into a branching blade having a bending part that is continuously bent in the branching direction from the overlapping part of the superimposed thin plates.
【００１０】分岐ブレートはサイプブレードの中に少な
くとも１枚含まれていればよく、例えば２枚の薄板から
なるサイブブレードの場合では、１枚を屈曲部のないブ
レード、他の１枚を分岐ブレートとして、一方向に１つ
の分岐部を有するサイプブレードとすることができる。
また、例えば２枚の薄板をいずれも分岐ブレードとした
場合では、互いに重ね合わされた重合部から相互に離反
する２つの方向に２つの分岐部を有するサイプブレード
とすることができる。[0010] At least one branching blade may be included in the sipe blade. For example, in the case of a sipe blade consisting of two thin plates, one is a blade without a bent part and the other is a branching blade. As such, it can be a sipe blade with one branch in one direction. Further, for example, in the case where two thin plates are both branched blades, the sipe blade can have two branched parts in two directions that are separated from each other from the overlapped part.
【００１１】ただこの場合ではサイブブレード自体の重
合部部分の厚みと屈曲部の厚みとが異なることになるの
で、加硫成形後に同一厚みのサイプをタイヤ踏面部に形
成したい場合は、屈曲部に、該屈曲部の開き角度に一致
する屈曲面を持ち、かつ分岐ブレードと同一厚みを有す
る薄板をさらに重ね合わせたサイプブレードとすること
が望ましい。However, in this case, the thickness of the overlapping part of the sive blade itself is different from the thickness of the bent part, so if you want to form sipes of the same thickness on the tire tread after vulcanization molding, It is desirable that the sipe blade has a bent surface that matches the opening angle of the bent portion, and thin plates having the same thickness as the branch blade are further superimposed.
【００１２】一方、タイヤ踏面部に多数の分岐を有する
サイプを形成したい場合では、両端部に屈曲部を備えた
分岐ブレードを繰り返し単位とするブレードを採用し、
このブレードを重合部で重ね合わせると同時に、当該ブ
レードの長さ方向で互いに隣接する分岐ブレード同士を
も屈曲部において重ね合わせることにより得られる。屈
曲部を片側にのみ設ければ一方側に多数分岐したサイプ
が形成され、両側に屈曲部を設ければ両側に多数分岐し
たサイプが得られる。On the other hand, when it is desired to form a sipe having a large number of branches on the tire tread, a blade having a repeating unit of branch blades having bent portions at both ends is adopted.
This can be obtained by overlapping the blades at the overlapping part and simultaneously overlapping the branched blades that are adjacent to each other in the length direction of the blades at the bending part. If a bent part is provided only on one side, a sipe with many branches on one side will be formed, and if a bent part is provided on both sides, a sipe with many branches on both sides will be obtained.
【００１３】[0013]
【作用】この発明は複数の薄板を重合部で互いに重ね合
わせた積層構造のブレードで構成し、そのうちの少なく
とも１枚の薄板を当該重ね合わされた薄板の重合部より
分岐方向に連続的に折れ曲る屈曲部を備えた分岐ブレー
ドとしたので、タイヤを加硫成形した場合、その踏面部
には連通性が良好なサイプを形成することができる。従
って湿潤路面等を走行した場合、水の流れがよくなり、
サイプの分岐支脈の集排水性が顕著に向上する。また少
なくとも１枚の薄板を屈曲させるだけでよいので従来に
比して加工性もすぐれ、またサイプの深さや長さ、分岐
の数、分岐角度等、所望とする様々の分岐バリエーショ
ンをタイヤの意匠面からの制約を受けずに容易に選択す
ることができる。従って従来では困難であった複雑な分
岐サイプもサイプの連通性を保持した状態で形成可能で
ある。また従来の様にブレードに骨を形成していないの
でゴム容量を減じることもなく、またコスト面でも良好
である。[Operation] This invention consists of a blade having a laminated structure in which a plurality of thin plates are overlapped with each other at the overlapping part, and at least one of the thin plates is continuously bent in a branching direction from the overlapping part of the overlapping thin plates. Since the branch blade is provided with a bent portion, when the tire is vulcanized and molded, sipes with good continuity can be formed in the tread portion of the tire. Therefore, when driving on a wet road surface, water flows better,
The water collection ability of the branch branches of the sipes is significantly improved. In addition, since it is only necessary to bend at least one thin plate, workability is superior compared to conventional methods, and various branch variations such as sipe depth and length, number of branches, branch angles, etc. can be made into the tire design. It can be easily selected without being constrained by the surface. Therefore, it is possible to form complex branched sipes, which have been difficult in the past, while maintaining the continuity of the sipes. In addition, unlike conventional blades, no bones are formed on the blade, so there is no reduction in rubber capacity, and the blade is cost-effective.
【００１４】[0014]
【実施例】図１はこの発明の一実施例に係るサイプブレ
ードの斜視図である。図において１は２枚の薄板からな
る分岐ブレード２、３を重合部２ａ、３ａにおいて互い
に重ね合わせてなるサイプブレードで、各分岐ブレード
２，３の端部は当該重合部２ａ、３ａから互いに分岐方
向に連続的に折り曲げられた屈曲部２ｂ、３ｂとなって
いる。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of a sipe blade according to an embodiment of the present invention. In the figure, 1 is a sipe blade made by overlapping branching blades 2 and 3 made of two thin plates overlapping each other at overlapping parts 2a and 3a, and the ends of each branching blade 2 and 3 are branched from the overlapping parts 2a and 3a. The bent portions 2b and 3b are continuously bent in the direction.
【００１５】従ってこのサイプブレード１を重ね合わせ
た状態でタイヤ加硫成形用の金型に取り付けて未加硫タ
イヤを加硫成形した場合は、タイヤの踏面部にはこのサ
イプブレード１の形に応じたサイプが形成され、特に分
岐構造を形作る屈曲部２ｂ、３ｂがサイプブレード１の
重合部２ａ、３ａから連続的に形成されているので、タ
イヤの踏面部にはこのサイプブレード１の形のサイプが
連通状態で形成され、従来の様に分岐部分がゴム膜によ
って遮断されるということはない。因って分岐構造のサ
イプは良好な連通状態が確保されるので、集排水効果を
向上することができる。Therefore, when an unvulcanized tire is vulcanized by attaching these sipe blades 1 in a stacked state to a mold for tire vulcanization molding, the tread portion of the tire will have the shape of this sipe blade 1. In particular, the bent portions 2b and 3b forming the branched structure are formed continuously from the overlapping portions 2a and 3a of the sipe blade 1, so that the tread portion of the tire has the shape of the sipe blade 1. The sipes are formed in a continuous state, and the branched portions are not blocked by a rubber membrane as in the past. Therefore, a good communication state is ensured for the branched sipes, so that the water collection and drainage effect can be improved.
【００１６】図２は本発明の他実施例に係るサイプブレ
ードの斜視図である。この実施例では分岐ブレード４、
５の屈曲部４ａ、５ａに、当該屈曲部４ａ、５ａの開き
角度に一致する屈曲面を持つ薄板６が重ね合わされてい
る。なおこの実施例では薄板６は分岐ブレード４、５と
同一厚みを有しているが、特に同一厚みとする必要はな
く、必要に応じて変えることができる。従ってこの実施
例のサイプブレードを用いてタイヤを加硫成形した場合
は、前記実施例と同様に、タイヤ踏面部に連通状態を有
する分岐構造のサイプが形成できるとともに、さらにサ
イプ全体を同一の切り込み幅とすることができ、必要に
よってはサイプ切り込み幅を変えることもできる。FIG. 2 is a perspective view of a sipe blade according to another embodiment of the present invention. In this embodiment, the branch blade 4,
A thin plate 6 having a bent surface matching the opening angle of the bent parts 4a, 5a is superimposed on the bent parts 4a, 5a of 5. In this embodiment, the thin plate 6 has the same thickness as the branch blades 4 and 5, but it is not necessary to make them the same thickness, and the thickness can be changed as necessary. Therefore, when a tire is vulcanized and molded using the sipe blade of this example, it is possible to form a sipe with a branched structure that communicates with the tire tread, as in the previous example, and furthermore, the entire sipe can be cut in the same way. The width of the sipe cut can be changed depending on the need.
【００１７】なお前記従来例と同様の構造のサイプとす
るには、例えば図３に示す様に、一方を平板状の水平ブ
レード７とし、これに屈曲状の分岐ブレード８、９をそ
れぞれの重合部７ａ、８ａ、９ａで重ね合わせ、かつ屈
曲部８ｂ、８ａでも重ね合わせることにより得られる。In order to obtain a sipe having a structure similar to that of the conventional example, for example, as shown in FIG. This is obtained by overlapping the portions 7a, 8a, and 9a and also overlapping the bent portions 8b and 8a.
【００１８】図４はタイヤ踏面部に多数のサイプを連続
的に形成する場合の実施例に係るサイプブレードの斜視
図であり、図示の通り、この場合では両端部に屈曲部を
備えた分岐ブレードを繰り返し単位とする多数の組み合
わせからなるサイプブレードとしている。すなわち特定
の分岐ブレード１０を基準にすると、分岐ブレード１０
の重合部１０ｃは、幅方向において相隣接する他の分岐
ブレード１１の重合部１１ａと重ね合わされており、一
方、分岐ブレード１０の両端部に位置する屈曲部１０ａ
、１０ｂは、長さ方向において相隣接する他の分岐ブレ
ード１２、１３の屈曲部１２ａ、１３ａと重ね合わされ
ている。なおこの実施例では特に分岐をブレードの長さ
方向に向かってほぼ交互に両側に振り分けて配置する構
造としており、従って図示の通り、例えば分岐ブレード
１０の重合部１０ｃには一部に分岐ブレード１１に隣接
する分岐ブレード１４の重合部１４ａも重ね合わされて
いる。FIG. 4 is a perspective view of a sipe blade according to an embodiment in which a large number of sipes are continuously formed on the tire tread. The sipe blade consists of many combinations of repeating units. That is, when a specific branch blade 10 is used as a reference, the branch blade 10
The overlapping portion 10c is overlapped with the overlapping portion 11a of another branching blade 11 adjacent to each other in the width direction, while the bent portion 10a located at both ends of the branching blade 10
, 10b are overlapped with bent portions 12a, 13a of other branch blades 12, 13 that are adjacent to each other in the length direction. In this embodiment, the branches are arranged almost alternately on both sides in the length direction of the blade. Therefore, as shown in the figure, for example, in the overlapping part 10c of the branch blade 10, there is a part of the branch blade 11. The overlapping portions 14a of the branch blades 14 adjacent to the overlapping portions 14a are also overlapped.
【００１９】ところでこの発明は上記の実施例に限定さ
れないことはいうまでもない。要するに複数の薄板を重
合部で互いに重ね合わして積層ブレードとし、そのうち
の少なくとも１枚の薄板を、当該重ね合わされた薄板の
重合部より分岐方向に連続的に折れ曲る屈曲部を備えた
分岐ブレードとするのであればすべて適用できる。従っ
て所望とするサイプの深さや長さ、分岐の数、分岐角度
、分岐の形状等を適宜任意に選択し、所望とする各種構
造のサイプをタイヤ踏面部に形成することができる。
なお薄板の厚みも上記実施例の通り同一厚みでなくても
よく、また金型への取り付けも埋め込み等あるが特に限
定されない。By the way, it goes without saying that the present invention is not limited to the above embodiments. In short, a plurality of thin plates are stacked on top of each other at the overlapped part to form a laminated blade, and at least one of the thin plates is a branching blade having a bending part that is continuously bent in the branching direction from the overlapped part of the stacked thin plates. If so, all can be applied. Therefore, the desired depth and length of the sipe, the number of branches, the branch angle, the shape of the branches, etc. can be arbitrarily selected, and sipes with various desired structures can be formed on the tire tread portion. Note that the thickness of the thin plate does not have to be the same as in the above embodiment, and the attachment to the mold may be by embedding, but is not particularly limited.
【００２０】[0020]
【発明の効果】以上の通りこの発明は、サイプブレード
を複数の薄板を重ね合わせた積層構造のブレードで構成
し、そしてそのうち少なくとも１枚の薄板を分岐方向に
連続的に折れ曲る屈曲部を備えた分岐ブレードとしたの
で、このサイプブレードを用いてタイヤを加硫成形した
場合、連通性が良好で、集排水性のすぐれたサイプを形
成することができ、サイプ本来の機能を十分に発揮する
空気入りタイヤを提供することができる。また単に複数
の薄板の組み合わせからなるので、サイプの深さや長さ
、分岐の数、分岐角度等も任意に選択することができ、
所望構造のサイプを簡単に形成することができる。
さらにブレード自体の加工性も良好であり、経済性の点
でもきわめて優れている。Effects of the Invention As described above, the present invention comprises a sipe blade having a laminated structure in which a plurality of thin plates are stacked one on top of the other, and a bending portion in which at least one of the thin plates is continuously bent in the branching direction. Since the branched blade is equipped with this sipe blade, when a tire is vulcanized and molded using this sipe blade, it is possible to form a sipe with good communication and excellent drainage and drainage performance, fully demonstrating the original function of the sipe. We can provide pneumatic tires that In addition, since it is simply a combination of multiple thin plates, the depth and length of the sipe, the number of branches, the branch angle, etc. can be arbitrarily selected.
A sipe with a desired structure can be easily formed. Furthermore, the blade itself has good workability and is extremely economical.
【図１】この発明の一実施例に係るサイプブレードの斜
視図である。FIG. 1 is a perspective view of a sipe blade according to an embodiment of the present invention.
【図２】この発明の他実施例に係るサイプブレードの斜
視図である。FIG. 2 is a perspective view of a sipe blade according to another embodiment of the invention.
【図３】この発明の他実施例に係るサイプブレードの斜
視図である。FIG. 3 is a perspective view of a sipe blade according to another embodiment of the present invention.
【図４】多数のサイプを形成する場合の本発明の実施例
に係るサイプブレードの斜視図である。FIG. 4 is a perspective view of a sipe blade according to an embodiment of the present invention when forming multiple sipes.
【図５】従来の突き合わせタイプのサイプブレードの斜
視図である。FIG. 5 is a perspective view of a conventional butt-type sipe blade.
【図６】従来の埋め込みタイプのサイプブレードの斜視
図である。FIG. 6 is a perspective view of a conventional embedded type sipe blade.
【図７】従来の鋳出しタイプのサイプブレードの斜視図
である。FIG. 7 is a perspective view of a conventional cast-out type sipe blade.
１ サイプブレード ２ 分岐ブレード ２ａ 重合部 ２ｂ 屈曲部 ３ 分岐ブレード ３ａ 重合部 ３ｂ 屈曲部 ４ 分岐ブレード ４ａ 屈曲部 ５ 分岐ブレード ５ａ 屈曲部 ６ 薄板 ７ 水平ブレード ７ａ 重合部 ８ 分岐ブレード ８ａ 重合部 ９ 分岐ブレード ９ａ 重合部 １０ 分岐ブレード １０ａ 屈曲部 １０ｂ 屈曲部 １０ｃ 重合部 １１ 分岐ブレード １１ａ 重合部 １２ 分岐ブレード １２ａ 屈曲部 １３ 分岐ブレード １３ａ 屈曲部 １４ 分岐ブレード １４ａ 重合部 1 Sipe blade 2 Branch blade 2a Polymerization part 2b Bent part 3 Branch blade 3a Polymerization part 3b Bent part 4 Branch blade 4a Bending part 5 Branch blade 5a Bending part 6 Thin plate 7 Horizontal blade 7a Polymerization part 8 Branch blade 8a Polymerization part 9 Branch blade 9a Polymerization part 10 Branch blade 10a Bent part 10b Bent part 10c Polymerization part 11 Branch blade 11a Polymerization part 12 Branch blade 12a Bent part 13 Branch blade 13a Bent part 14 Branch blade 14a Polymerization part
Claims (3)
積層構造からなり、そのうちの少なくとも１枚の薄板を
、当該重ね合わされた薄板の重合部より分岐方向に連続
的に折れ曲る屈曲部を備えた分岐ブレードとしたことを
特徴とする空気入りタイヤ成形用サイプブレード。[Claim 1] A bending section consisting of a laminated structure in which a plurality of thin plates are stacked on top of each other at an overlapping part, and at least one of the thin plates is continuously bent in a branching direction from the overlapping part of the stacked thin plates. A sipe blade for forming pneumatic tires, characterized by having a branched blade with.
ブレードの屈曲部に、該屈曲部の開き角度に一致する屈
曲面を有する薄板が重ね合わされた請求項１記載の空気
入りタイヤ成形用サイプブレード。2. The pneumatic tire forming device according to claim 1, wherein a thin plate having a bent surface that matches the opening angle of the bent portion is superimposed on the bent portion of the pair of branch blades that are overlapped with each other at the overlapping portion. Sipe blade.
り返し単位とする多数の分岐ブレードの組み合わせから
なり、ブレードの長さ方向で互いに隣接する分岐ブレー
ド同士を屈曲部で重ね合わせた請求項１記載の空気入り
タイヤ成形用サイプブレード。Claim 3: A claim comprising a combination of a large number of branching blades each having a repeating unit of branching blades having bent portions at both ends, wherein branched blades that are adjacent to each other in the length direction of the blades are overlapped at the bent portions. 1. The sipe blade for forming a pneumatic tire according to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12994091A JP3145139B2 (en) | 1991-05-31 | 1991-05-31 | Sipe blade for pneumatic tire molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12994091A JP3145139B2 (en) | 1991-05-31 | 1991-05-31 | Sipe blade for pneumatic tire molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04353431A true JPH04353431A (en) | 1992-12-08 |
| JP3145139B2 JP3145139B2 (en) | 2001-03-12 |
Family
ID=15022198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12994091A Expired - Fee Related JP3145139B2 (en) | 1991-05-31 | 1991-05-31 | Sipe blade for pneumatic tire molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3145139B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1243390A2 (en) * | 2001-03-23 | 2002-09-25 | The Goodyear Tire & Rubber Company | Composite blade for a tire curing mould |
| WO2007047658A1 (en) * | 2005-10-19 | 2007-04-26 | Bridgestone Firestone North American Tire, Llc | A reinforced blade for use in a vulcanization mold to form a sipe in a tire |
| EP1872975A1 (en) * | 2006-06-26 | 2008-01-02 | The Goodyear Tire & Rubber Company | Tire with a tread having sipes and a sipe blade for tires |
| US7546861B2 (en) | 2006-06-26 | 2009-06-16 | The Goodyear Tire & Rubber Company | Tire with tread having crossed configuration sipe |
| JP2009262352A (en) * | 2008-04-22 | 2009-11-12 | Yokohama Rubber Co Ltd:The | Method for producing tire molding mold |
| JP2018192653A (en) * | 2017-05-15 | 2018-12-06 | 東洋ゴム工業株式会社 | Tire vulcanization mold and method of producing tire vulcanization mold |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016200392A1 (en) * | 2015-06-11 | 2016-12-15 | Compagnie Generale Des Etablissements Michelin | Set of molding elements and mold |
-
1991
- 1991-05-31 JP JP12994091A patent/JP3145139B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1243390A2 (en) * | 2001-03-23 | 2002-09-25 | The Goodyear Tire & Rubber Company | Composite blade for a tire curing mould |
| EP1243390A3 (en) * | 2001-03-23 | 2004-01-02 | The Goodyear Tire & Rubber Company | Composite blade for a tire curing mould |
| WO2007047658A1 (en) * | 2005-10-19 | 2007-04-26 | Bridgestone Firestone North American Tire, Llc | A reinforced blade for use in a vulcanization mold to form a sipe in a tire |
| US7779876B2 (en) | 2005-10-19 | 2010-08-24 | Bridgestone Americas Tire Operations, Llc | Reinforced blade for use in a vulcanization mold to form a sipe in a tire |
| EP1872975A1 (en) * | 2006-06-26 | 2008-01-02 | The Goodyear Tire & Rubber Company | Tire with a tread having sipes and a sipe blade for tires |
| US7546861B2 (en) | 2006-06-26 | 2009-06-16 | The Goodyear Tire & Rubber Company | Tire with tread having crossed configuration sipe |
| JP2009262352A (en) * | 2008-04-22 | 2009-11-12 | Yokohama Rubber Co Ltd:The | Method for producing tire molding mold |
| JP2018192653A (en) * | 2017-05-15 | 2018-12-06 | 東洋ゴム工業株式会社 | Tire vulcanization mold and method of producing tire vulcanization mold |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3145139B2 (en) | 2001-03-12 |
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