JPH064249B2 - Tread mold for retreaded tires - Google Patents
Tread mold for retreaded tiresInfo
- Publication number
- JPH064249B2 JPH064249B2 JP1077390A JP7739089A JPH064249B2 JP H064249 B2 JPH064249 B2 JP H064249B2 JP 1077390 A JP1077390 A JP 1077390A JP 7739089 A JP7739089 A JP 7739089A JP H064249 B2 JPH064249 B2 JP H064249B2
- Authority
- JP
- Japan
- Prior art keywords
- tread
- cavity
- mold
- rubber
- angle
- 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 - Lifetime
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は更生タイヤ用トレッド金型であって、特に、台
タイヤにクッション層を介して加硫接着させる加硫済み
トレッドを製造するための金型に関する。Description: TECHNICAL FIELD The present invention relates to a tread mold for retreaded tires, and in particular, for producing a vulcanized tread that is vulcanized and adhered to a base tire via a cushion layer. Regarding molds.
一般に、この種の金型としては、第６図に示す様に、キ
ャビティａの両側端近傍に、仕切部ｂ，ｂを介してゴム
逃げ溜部ｃ，ｃが長手方向に沿って形成されるが、従来
では、図例の如く溜部ｃの容積は小さく、また、キャビ
ティａの側面ｄは傾斜面状とされ、ゴム逃げ溜部ｃの内
側面ｅは鉛直面状とされている。そのため、加硫中にゴ
ムの逆戻りが生じ、ベア等の不良が生じ、さらには、加
硫ロット間において、トレッドの厚さ寸法にバラツキが
生じる虞れがあり、また、加硫成型後、はみ出しゴム付
きトレッからはみ出しゴムを切除するのが容易でなく、
作業性が悪いという問題があった。Generally, as a mold of this type, as shown in FIG. 6, rubber escape reservoirs c, c are formed in the vicinity of both ends of a cavity a through partition parts b, b along the longitudinal direction. However, conventionally, as shown in the figure, the volume of the reservoir portion c is small, the side surface d of the cavity a has an inclined surface shape, and the inner side surface e of the rubber escape reservoir portion c has a vertical surface shape. As a result, the rubber may return during vulcanization, resulting in defects such as bareness, and there may be variations in the thickness of the tread between vulcanization lots. It is not easy to cut off the rubber protruding from the rubber-tray,
There was a problem of poor workability.
そこで、本発明では、高精度にて厚さ寸法を設定するこ
とができ、しかもベア等の不良が生じることなく、更
に、はみ出しゴムの切除作業性に優れた更生タイヤ用ト
レッド金型を提供することを目的とする。Therefore, the present invention provides a tread mold for a retreaded tire that can set the thickness dimension with high accuracy, does not cause a defect such as a bear, and has excellent workability in cutting off the protruding rubber. The purpose is to
上記目的を解決するために、本発明に係る更生タイヤ用
トレッド金型は、トレッドを形成するキャビティの両側
端近傍に、仕切部を介してゴム逃げ溜部を長手方向に沿
って形成すると共に、該ゴム逃げ溜部の全体の容積を、
上記キャビティの容積の2.5％〜10％としたものであ
り、また、ゴム逃げ溜部の内側面を、鉛直面に対して10
゜〜70゜の角度でもって合わせ面側に拡大する傾斜面とし
たものであり、また、キャビティの側面外端部に面取部
を設け、かつ、外面取部の切欠面を、水平面に対して30
゜〜70゜の角度に設定したものであり、また、ゴム逃げ溜
部の内側面を、鉛直面に対して10゜〜70゜の角度でもって
合わせ面側に拡大する傾斜面とし、かつ、上記キャビテ
ィの側面外端部に面取部を形成すると共に、該面取部の
切欠面を、水平面に対して30゜〜70゜の角度に設定したも
のであり、また、ゴム逃げ溜部の全体の容積を、上記キ
ャビティの容積の2.5％〜10％とし、かつ、該ゴム逃げ
溜部の内側面を、鉛直面に対して10゜〜70゜の角度でもっ
て合わせ面側に拡大する傾斜面としたものであり、ま
た、ゴム逃げ溜部の全体の容積を、上記キャビティの容
積の2.5％〜10％とし、さらに、該キャビティの側面外
端部に面取部を設けると共に、該面取部の切欠面を、水
平面に対して30゜〜70゜の角度に設定したものであり、ま
た、ゴム逃げ溜部の全体の容積を、上記キャビティ８の
容積の2.5％〜10％とし、さらに、該ゴム逃げ溜部の内
側面を、鉛直面に対して10゜〜70゜の角度でもって合わせ
面側に拡大する傾斜面とし、かつ、上記キャビティの側
面外端部に面取部を形成すると共に、該面取部の切欠面
を、水平面に対して30゜〜70゜の角度に設定したものであ
る。In order to solve the above object, the tread mold for retreaded tire according to the present invention, in the vicinity of both side ends of the cavity forming the tread, along with the rubber escape reservoir portion through the partition portion along the longitudinal direction, The total volume of the rubber escape reservoir is
2.5% to 10% of the volume of the above cavity, and the inner surface of the rubber escape reservoir is
It is an inclined surface that expands to the mating surface side at an angle of ° to 70 °. Also, a chamfer is provided at the outer end of the side surface of the cavity, and the notch surface of the outer chamfer is with respect to the horizontal plane. 30
It is set at an angle of ° to 70 °, and the inner side surface of the rubber escape reservoir is an inclined surface that expands to the mating surface side at an angle of 10 ° to 70 ° with respect to the vertical plane, and A chamfer is formed at the outer end of the side surface of the cavity, and the notch surface of the chamfer is set at an angle of 30 ° to 70 ° with respect to the horizontal plane. The entire volume is 2.5% to 10% of the volume of the cavity, and the inner surface of the rubber escape reservoir is enlarged to the mating surface side at an angle of 10 ° to 70 ° with respect to the vertical plane. The entire volume of the rubber escape reservoir is 2.5% to 10% of the volume of the cavity, and a chamfered portion is provided at the outer side end of the cavity. The cutout surface of the cutout is set at an angle of 30 ° to 70 ° with respect to the horizontal plane. The volume of the body is set to 2.5% to 10% of the volume of the cavity 8, and the inner side surface of the rubber escape reservoir is expanded to the mating surface side at an angle of 10 ° to 70 ° with respect to the vertical plane. The inclined surface is formed, and a chamfered portion is formed at the outer end of the side surface of the cavity, and the cutout surface of the chamfered portion is set at an angle of 30 ° to 70 ° with respect to the horizontal plane.
ゴム逃げ溜部の全体の容積が、キャビティの容積の2.5
％〜10％であれば、加硫中には、余分なゴムは完全にゴ
ム逃げ溜部に流れ込み、スラグへの押圧力が不足するこ
とがなく、しかも、流れ込み量がゴム逃げ溜部の容積よ
り大とならないように設定することができる。The total volume of the rubber escape reservoir is 2.5 times the volume of the cavity.
% To 10%, during vulcanization, excess rubber will completely flow into the rubber escape reservoir, and the pressing force on the slag will not be insufficient, and the amount of inflow will be the volume of the rubber escape reservoir. It can be set so that it is not larger.
また、ゴム逃げ溜部の内側面が10゜〜70゜の傾斜面とされ
れば、はみ出しゴムと製品（トレッド）との間の空間部
が広くなり、該はみ出しゴムの切り離す際に、ナイフ等
を挿入させやすい。Also, if the inner side surface of the rubber escape reservoir is an inclined surface of 10 ° to 70 °, the space between the protruding rubber and the product (tread) becomes wider, and a knife or the like can be used to separate the protruding rubber. Easy to insert.
さらに、キャビティの側面外端部に、面取部を設けると
共に、該面取部の切欠面を、水平面に対して30゜〜70゜の
角度に設定すれば、ウィング部が形成されることにな
り、このトレッドを台タイヤに結合させた際に、該ウィ
ング部が台タイヤとトレッドとの境界部をカバーするこ
とになり、該境界部の剥離損傷を防止する。また、キャ
ビティとゴム逃げ溜部との仕切部のプロファイルを上述
のような傾斜面としたことによって該溜部へのゴムの流
れが遅くなり、その結果、スラグへの押圧記を一層十分
なものとすることができる。Furthermore, if a chamfer is provided at the outer end of the side surface of the cavity and the notch surface of the chamfer is set at an angle of 30 ° to 70 ° with respect to the horizontal plane, the wing is formed. When the tread is joined to the base tire, the wing portion covers the boundary between the base tire and the tread, and peeling damage at the boundary is prevented. In addition, the profile of the partitioning portion between the cavity and the rubber escape reservoir is made into the inclined surface as described above, so that the flow of the rubber to the reservoir is delayed, and as a result, the pressure on the slag is more sufficiently marked. Can be
以下、実施例を示す図面に基づいて本発明を詳説する。 Hereinafter, the present invention will be described in detail with reference to the drawings illustrating examples.
第２図は本発明に係る更生タイヤ用トレッド金型の簡略
図を示し、この金型は、第５図に示す様に、トレッド１
が台タイヤ２にクッション層３を介して結合されてなる
更生タイヤ４の加硫済みトレッド１を加硫成形するため
のものであり、上下型５，６と、エアバック７と、を備
えている。また、下型６は、パターンピッチ毎のパター
ン模様（溝）を有する板状の多数個のセグメントを、相
互に両端が接するようにプレス基板31上に縦列させてな
るものであり、上型５はプレス上枠（図示省略）に固定
れている。図中、32はプレス基台である。FIG. 2 shows a simplified diagram of a tread mold for retreaded tire according to the present invention. This mold has a tread 1 as shown in FIG.
Is for vulcanizing and molding the vulcanized tread 1 of the retreaded tire 4 which is joined to the base tire 2 through the cushion layer 3, and includes upper and lower molds 5 and 6, and an airbag 7. There is. The lower die 6 is formed by vertically arranging a large number of plate-shaped segments having a pattern pattern (groove) for each pattern pitch on the press substrate 31 so that both ends are in contact with each other. Is fixed to a press upper frame (not shown). In the figure, 32 is a press base.
従って、この金型は下型６上にスラグＳ（トレッド１用
の生ゴム）を載置し、そして、上型５に対して下側６を
上昇させ、該スラグＳを挾圧加硫する。Therefore, in this mold, the slag S (raw rubber for the tread 1) is placed on the lower mold 6, and the lower side 6 is raised with respect to the upper mold 5, and the slag S is vulcanized by pressure.
そして、金型の閉状態では、第１図に示す様に、上型５
の下面５ａとの間にトレッド１を形成すべきキャビティ
８が形成され、さらには、該キャビティ８の両側端近傍
に、仕切部９，９を介してゴム逃げ溜部10,10が長手方
向に沿って形成されている。Then, in the closed state of the mold, as shown in FIG.
A cavity 8 for forming the tread 1 is formed between the lower surface 5a and the lower surface 5a, and rubber escape reservoirs 10, 10 are formed in the longitudinal direction in the vicinity of both side ends of the cavity 8 via partition portions 9, 9. It is formed along.
そして、この場合、ゴム逃げ溜部10,10の全容積は、キ
ャビティ８の容積の2.5％〜10％とされ、また、ゴム逃
げ溜部10は外側面11が鉛直面とされ、内側面12が傾斜面
とされる。ここで、この傾斜面の傾斜角度θ1とは、鉛
直面に対して10゜〜70゜の角度であって、合わせ面側に拡
大する。In this case, the total volume of the rubber escape reservoirs 10, 10 is 2.5% to 10% of the volume of the cavity 8, and the rubber escape reservoir 10 has an outer surface 11 as a vertical surface and an inner surface 12 Is an inclined surface. Here, the inclination angle θ 1 of this inclined surface is an angle of 10 ° to 70 ° with respect to the vertical plane, and expands to the mating surface side.
また、キャビティ８の側面13,13は、鉛直面に対して所
定角度(10゜〜15゜)でもって傾斜し、その外端部に、面取
部14,14が形成されている。そして、この面取部14の切
欠面15は、水平面に対して30゜〜70゜の傾斜角度θ2でも
ってキャビティ８側へ拡大する傾斜面とされる。The side faces 13 , 13 of the cavity 8 are inclined at a predetermined angle (10 ° to 15 °) with respect to the vertical plane, and chamfered portions 14, 14 are formed at the outer ends thereof. The notched surface 15 of the chamfered portion 14 is an inclined surface that expands toward the cavity 8 with an inclination angle θ 2 of 30 ° to 70 ° with respect to the horizontal plane.
次に、上述の金型を使用してトレッド１を製造する方法
を説明する。Next, a method of manufacturing the tread 1 using the above mold will be described.
まず、下型６上にスラグＳを載置する。この場合のスラ
グＳは、キャビティ８の容積より2.5％〜10％以上多目
とする。けだし、少なければ、スラグＳを十分に押圧す
ることができず、ベア発生等の不良品となるからであ
る。First, the slag S is placed on the lower mold 6. In this case, the slag S is 2.5% to 10% or more larger than the volume of the cavity 8. This is because if the amount of slag is small, the slag S cannot be sufficiently pressed, resulting in a defective product such as the occurrence of bare.
そして、下型６を第２図の矢印の如く、エアバック７の
膨張により上型５に対して上昇させ、金型を閉状態とし
て、加熱加圧する。このとき、余分なゴムは、仕切部
９，９を介してゴム逃げ溜部10,10に流れ、第３図に示
す様に、はみ出しゴム16付きトレッド１が形成される。Then, as shown by the arrow in FIG. 2, the lower mold 6 is raised with respect to the upper mold 5 by the expansion of the airbag 7, and the mold is closed and heated and pressed. At this time, the excess rubber flows into the rubber escape reservoirs 10 and 10 via the partitions 9 and 9 to form the tread 1 with the protruding rubber 16 as shown in FIG.
次に、エアバック７を収縮して下型６を下降させ金型を
開状態として、はみ出しゴム16付トレッド１を該金型か
ら取り出し、第３図に仮想線で示す様に、はみ出しゴム
16をトレッド１から切り離せば、台タイヤ２に取付ける
ための加硫済のトレッド１が形成される。ここに、ゴム
逃げ溜部10,10の全容積を、キャビティ８の容積の2.5％
〜10％としたのは、この範囲より小であれば、金型閉状
態において、スラグＳへの押圧力が不足し、トレッド表
面に、ベア、エア溜り等の不良が発生する虞れがあり、
また、10％より台であれば、金型外へのゴムの流出によ
り、加硫ロッド間のトレッドゲージの不均一を招く虞れ
があり、材料の無駄となるからである。Next, the airbag 7 is contracted to lower the lower mold 6 to open the mold, the tread 1 with the protruding rubber 16 is taken out of the mold, and the protruding rubber is indicated by the phantom line in FIG.
When 16 is separated from the tread 1, the vulcanized tread 1 for attaching to the base tire 2 is formed. Here, the total volume of the rubber escape reservoirs 10, 10 is 2.5% of the volume of the cavity 8.
If it is less than this range, the pressing force to the slag S is insufficient in the mold closed state, and there is a possibility that defects such as bears and air pools may occur on the tread surface. ,
On the other hand, if it is in the range of 10% or more, there is a risk that the tread gauge between the vulcanization rods may become uneven due to the outflow of rubber to the outside of the mold, and the material will be wasted.
しかして、金型から取り出されたはみ出しゴム16付トレ
ッド１は、第４図に示す様に、トレッド１とはみ出しゴ
ム16とが、薄肉の連結部17を介して連結され、トレッド
１の側面18とはみ出しゴムに内側面19との間に空間部20
が形成される。そして、はみ出しゴム16を切り離すに
は、まず、連結部17の端部に、ナイフ、鋏等にて切り込
みを形成し、その後、手ではみ出しゴム16を第３図に示
す矢印の如く引張る。Then, as shown in FIG. 4, the tread 1 with the protruding rubber 16 taken out from the mold has the tread 1 and the protruding rubber 16 connected to each other via the thin connecting portion 17, and the side surface 18 of the tread 1 A space 20 between the protruding rubber and the inner surface 19
Is formed. Then, in order to separate the protruding rubber 16, first, a notch is formed at the end of the connecting portion 17 with a knife, scissors or the like, and then the protruding rubber 16 is pulled by hand as shown by an arrow in FIG.
ここに、はみ出しゴム16の内側面19は傾斜面とされてい
るので、空間部20が大となり、ナイフ、鋏等のこの空間
部20への挿入が容易となり、切り込みを形成する作業が
極めて行ないやすいものとなる。また、傾斜角度θ1を1
0゜〜70゜としたのは、この範囲より小であれば、手で引
張っただけで切り離すことができないものとなり、ま
た、この範囲より大であれば、溜り部10の容積をとりに
くいからである。Here, since the inner side surface 19 of the protruding rubber 16 is an inclined surface, the space portion 20 becomes large, and it becomes easy to insert a knife, scissors or the like into this space portion 20, and the work for forming the cut is extremely performed. It will be easy. Also, the tilt angle θ 1 is set to 1
The range of 0 ° to 70 ° is that if it is smaller than this range, it cannot be separated by just pulling it by hand, and if it is larger than this range, it is difficult to secure the volume of the reservoir 10. Is.
また、第４図に示す一点鎖線に沿ってはみ出しゴム16を
トレッド１から切り離せば、トレッド１には、面取部14
にてトレッドと台タイヤの境界部をカバーするウィング
部21が形成される。ここに、面取部14の切欠面15の傾斜
角度θ2を、30゜〜70゜としたのは、この範囲より小であ
れば、ウィング部21の肉厚寸法が小となり、仕上げの際
のバフがけを行ないにくくなり、また、この範囲より大
であれば、ウィング部21の突出長さが短くなって、この
ウィング部21がなくなる虞れがあるからである。Further, if the protruding rubber 16 is separated from the tread 1 along the alternate long and short dash line shown in FIG.
A wing portion 21 that covers the boundary between the tread and the base tire is formed. Here, the inclination angle θ 2 of the notch surface 15 of the chamfered portion 14 is set to 30 ° to 70 °, because if it is smaller than this range, the wall thickness of the wing portion 21 becomes small, and it is necessary for finishing. This is because buffing is difficult to perform, and if it is larger than this range, the protruding length of the wing portion 21 becomes short and the wing portion 21 may be lost.
しかして、上述の如く形成された加硫済みトレッド１
は、第５図に示す様に、台タイヤ２に、クッション層３
を介して結合され、クッション層３を加硫することによ
りトレッド１と台タイヤ２が一体化され、更生タイヤ４
が形成される。Thus, the vulcanized tread 1 formed as described above
As shown in FIG. 5, the base tire 2 and the cushion layer 3 are
The tread 1 and the base tire 2 are integrated by vulcanizing the cushion layer 3, and the retreaded tire 4
Is formed.
なお、本発明は上述の実施例に限定されず、本発明の要
旨を逸脱しない範囲で設計変更自由であり、例えば、ゴ
ム逃げ溜部10の容積をキャビティ８の容積の2.5％〜10
％とすること（以下という。）、ゴム逃げ溜部10の内
側面12を傾斜角度θ1が10゜〜70゜とされる傾斜面とする
こと（以下という。）、面取部14の切欠面15を傾斜角
度θ2が30゜〜70゜とされる傾斜面とすること（以下と
いう。）のうちの少なくとも一つを備えていればよい。
つまり、のみ、のみ、のみ、と、と、
と、とと（実施例）を備えているものであって
もよい。また、実施例とは上下逆の金型であってもよ
い。つまり、上型にキャビティ８及びゴム逃げ溜部10を
形成する凹溝を設けるようにするも好ましい。The present invention is not limited to the above-described embodiment, and the design can be freely changed without departing from the gist of the present invention. For example, the volume of the rubber escape reservoir 10 is 2.5% to 10% of the volume of the cavity 8.
% (Hereinafter, referred to as), the inner side surface 12 of the rubber escape reservoir 10 is an inclined surface having an inclination angle θ 1 of 10 ° to 70 ° (hereinafter referred to as), and the notch of the chamfered portion 14 It suffices that the surface 15 is at least one of an inclined surface having an inclination angle θ 2 of 30 ° to 70 ° (hereinafter referred to as “inclination surface”).
That is, only, only, only, and,
And, and and (embodiment) may be provided. Further, the mold may be upside down from the embodiment. That is, it is also preferable to provide the upper mold with a groove for forming the cavity 8 and the rubber escape reservoir 10.
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, it has the following effects.
ゴム逃げ溜部10,10の全体の容積をキャビティ８の容積
の2.5％〜10％とすれば、スラグＳへの押圧力が不足す
るということがなく、加硫ロット毎のトレッド１の厚さ
寸法にバラツキがなくなり高精度のトレッド１を製造す
ることができ、しかも、ゴムの逆戻り現象がなく、ベア
等の不良が生じない。If the total volume of the rubber escape reservoirs 10, 10 is 2.5% to 10% of the volume of the cavity 8, the pressing force on the slag S will not be insufficient, and the thickness of the tread 1 for each vulcanization lot It is possible to manufacture a highly accurate tread 1 with no variation in dimensions, and furthermore, there is no backflow phenomenon of rubber, and defects such as bears do not occur.
また、ゴム逃げ溜部10の内側面１２を傾斜角度θ1が10゜
〜70゜とされる傾斜面とすれば、トレッド１とはみ出し
ゴム16の間の空間部20が大となり、はみ出しゴム16の切
り離し作業が容易となる。If the inner side surface 12 of the rubber escape reservoir 10 is an inclined surface having an inclination angle θ 1 of 10 ° to 70 °, the space 20 between the tread 1 and the protruding rubber 16 becomes large, and the protruding rubber 16 It will be easy to detach.
さらに、面取部14の切欠面15の傾斜角度θ2を、30゜〜70
゜とすれば、トレッドと台タイヤの境界部をカバーする
ウィング部21を確実に形成することができ、境界部の剥
離損傷の防止に寄与する。また、キャビティ８とゴム逃
げ溜部10の仕切部９のプロファイルを上述の通り特定の
傾斜面としたので、溜部10へのゴム流れが遅くなり、ス
ラグＳへの押圧力が一層十分なものとなる。Further, the inclination angle θ 2 of the notch surface 15 of the chamfered portion 14 is set to 30 ° to 70 °.
When the angle is 0, the wing portion 21 that covers the boundary between the tread and the base tire can be reliably formed, which contributes to prevention of peeling damage at the boundary. Further, since the profile of the cavity 8 and the partition portion 9 of the rubber escape reservoir 10 is the specific inclined surface as described above, the rubber flow to the reservoir 10 becomes slow and the pressing force to the slag S is further sufficient. Becomes
第１図は本発明の一実施例の要部拡大断面図、第２図は
全体の簡略断面斜視図、第３図は加硫後のトレッドの斜
視図、第４図は同拡大断面図、第５図は更生タイヤの断
面図である。第６図は従来の下型の要部断面図である。 １…トレッド、４…更生タイヤ、８…キャビティ、９…
仕切部、10…ゴム逃げ溜部、12…内側面、13…側面、１
４…面取部、15…切欠面、θ1，θ2…傾斜角度。FIG. 1 is an enlarged sectional view of an essential part of an embodiment of the present invention, FIG. 2 is a simplified sectional perspective view of the whole, FIG. 3 is a perspective view of a tread after vulcanization, and FIG. FIG. 5 is a sectional view of a retreaded tire. FIG. 6 is a sectional view of a main part of a conventional lower mold. 1 ... Tread, 4 ... Rehabilitated tire, 8 ... Cavity, 9 ...
Partition part, 10 ... Rubber escape part, 12 ... Inner side surface, 13 ... Side surface, 1
4 ... Chamfered portion, 15 ... Notched surface, θ 1 , θ 2 ... Inclination angle.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｌ 30:00 4Ｆ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location B29L 30:00 4F
Claims (7)
造するための金型であって、 トレッド１を形成するキャビティ８の両側端近傍に、仕
切部９，９を介してゴム逃げ溜部10,10を長手方向に沿
って形成すると共に、該ゴム逃げ溜部10,10の全体の容
積を、上記キャビティ８の容積の2.5％〜10％としたこ
とを特徴とする更生タイヤ用トレッド金型。1. A mold for producing a vulcanized tread 1 for a retreaded tire 4, wherein a rubber escape reservoir is provided in the vicinity of both side ends of a cavity 8 forming the tread 1 via partition parts 9, 9. Treads for retreaded tires, characterized in that the parts 10, 10 are formed along the longitudinal direction, and the total volume of the rubber escape reservoirs 10, 10 is 2.5% to 10% of the volume of the cavity 8. Mold.
造するための金型であって、 トレッド１を形成するキャビティ８の両側端近傍に、仕
切部９，９を介してゴム逃げ溜部10,10を長手方向に沿
って形成すると共に、該ゴム逃げ溜部10の内側面12を、
鉛直面に対して10゜〜70゜の角度θ1でもって合わせ面側
に拡大する傾斜面としたことを特徴とする更生タイヤ用
トレッド金型。2. A mold for producing a vulcanized tread 1 for a retreaded tire 4, wherein a rubber escape reservoir is provided in the vicinity of both side ends of a cavity 8 forming the tread 1 via partition parts 9, 9. While forming the parts 10, 10 along the longitudinal direction, the inner side surface 12 of the rubber escape reservoir 10 is
A tread mold for retreaded tires, which has an inclined surface that expands to the mating surface side at an angle θ 1 of 10 ° to 70 ° with respect to the vertical plane.
造するための金型であって、 トレッド１を形成するキャビティ８の両側端近傍に、仕
切部９，９を介してゴム逃げ溜部10,10を長手方向に沿
って形成すると共に、該キャビティ８の側面13外端部に
面取部14を設け、かつ、該面取部14の切欠面15を、水平
面に対して30゜〜70゜の角度θ2に設定したことを特徴と
する更生タイヤ用トレッド金型。3. A mold for producing a vulcanized tread 1 for a retreaded tire 4, wherein rubber escapes are provided in the vicinity of both side ends of a cavity 8 forming the tread 1 via partition parts 9, 9. The portions 10, 10 are formed along the longitudinal direction, a chamfered portion 14 is provided on the outer end of the side surface 13 of the cavity 8, and the cutout surface 15 of the chamfered portion 14 is 30 ° with respect to the horizontal plane. A tread mold for retreaded tires, which is set to an angle θ 2 of ~ 70 °.
造するための金型であって、 トレッド１を形成するキャビティ８の両側端近傍に、仕
切部９，９を介してゴム逃げ溜部10,10を長手方向に沿
って形成すると共に、該ゴム逃げ溜部10の内側面12を、
鉛直面に対して10゜〜70゜の角度θ1でもって合わせ面側
に拡大する傾斜面とし、かつ、上記キャビティ８の側面
13外端部に面取部14を形成すると共に、該面取部14の切
欠面15を、水平面に対して30゜〜70゜の角度θ2に設定し
たことを特徴とする更生タイヤ用トレッド金型。4. A mold for producing a vulcanized tread 1 for a retreaded tire 4, wherein a rubber escape reservoir is provided in the vicinity of both side ends of a cavity 8 forming the tread 1 via partition parts 9, 9. While forming the parts 10, 10 along the longitudinal direction, the inner side surface 12 of the rubber escape reservoir 10 is
An inclined surface that expands to the mating surface side at an angle θ 1 of 10 ° to 70 ° with respect to the vertical plane, and the side surface of the cavity 8
13 A tread for retreaded tire, characterized in that a chamfered portion 14 is formed at an outer end portion, and a notched surface 15 of the chamfered portion 14 is set at an angle θ 2 of 30 ° to 70 ° with respect to a horizontal plane. Mold.
造するための金型であって、 トレッド１を形成するキャビティ８の両側端近傍に、仕
切部９，９を介してゴム逃げ溜部10,10を長手方向に沿
って形成すると共に、該ゴム逃げ溜部10,10の全体の容
積を、上記キャビティ８の容積の2.5％〜10％とし、か
つ、該ゴム逃げ溜部10の内側面12を、鉛直面に対して10
゜〜70゜の角度θ1でもって合わせ面側に拡大する傾斜面
としたことを特徴とする更生タイヤ用トレッド金型。5. A mold for producing a vulcanized tread 1 for a retreaded tire 4, wherein a rubber escape reservoir is provided in the vicinity of both side ends of a cavity 8 forming the tread 1 via partition parts 9, 9. The parts 10, 10 are formed along the longitudinal direction, and the total volume of the rubber escape reservoirs 10, 10 is 2.5% to 10% of the volume of the cavity 8 and the rubber escape reservoirs 10 Inner surface 12 against vertical
A tread mold for retreaded tires, characterized in that it has an inclined surface that expands to the mating surface side with an angle θ 1 of 70 ° to 70 °.
造するための金型であって、 トレッド１を形成するキャビティ８の両側端近傍に、仕
切部９，９を介してゴム逃げ溜部10,10を長手方向に沿
って形成すると共に、該ゴム逃げ溜部10,10の全体の容
積を、上記キャビティ８の容積の2.5％〜10％とし、さ
らに、該キャビティ８の側面13外端部に面取部14を設け
ると共に、該面取部14の切欠面15を、水平面に対して30
゜〜70゜の角度θ2に設定したことを特徴とする更生タイ
ヤ用トレッド金型。6. A mold for producing a vulcanized tread 1 for a retreaded tire 4, wherein a rubber escape reservoir is provided in the vicinity of both side ends of a cavity 8 forming the tread 1 via partition parts 9, 9. The parts 10 and 10 are formed along the longitudinal direction, and the total volume of the rubber escape reservoirs 10 and 10 is 2.5% to 10% of the volume of the cavity 8. The chamfered portion 14 is provided at the end portion, and the cutout surface 15 of the chamfered portion 14 is provided with a 30
A tread mold for retreaded tires, which is set at an angle θ 2 of 70 ° to 70 °.
造するための金型であって、 トレッド１を形成するキャビティ８の両側端近傍に、仕
切部９，９を介してゴム逃げ溜部10,10を長手方向に沿
って形成すると共に、該ゴム逃げ溜部10,10の全体の容
積を、上記キャビティ８の容積の2.5％〜10％とし、さ
らに、該ゴム逃げ溜部10の内側面12を、鉛直面に対して
10゜〜70゜の角度θ1でもって合わせ面側に拡大する傾斜
面とし、かつ、上記キャビティ８の側面13外端部に面取
部14を形成すると共に、該面取部14の切欠面15を、水平
面に対して30゜〜70゜の角度θ2に設定したことを特徴と
する更生タイヤ用トレッド金型。7. A mold for producing a vulcanized tread 1 for a retreaded tire 4, wherein a rubber escape reservoir is provided in the vicinity of both side ends of a cavity 8 forming the tread 1 via partition parts 9, 9. The parts 10, 10 are formed along the longitudinal direction, the total volume of the rubber escape reservoirs 10, 10 is 2.5% to 10% of the volume of the cavity 8, and the rubber escape reservoir 10 The inner surface 12 against the vertical
The chamfered portion 14 is formed at the outer end of the side surface 13 of the cavity 8 with an inclined surface that expands to the mating surface side at an angle θ 1 of 10 ° to 70 °, and the notched surface of the chamfered portion 14 is formed. A tread mold for retreaded tire, wherein 15 is set to an angle θ 2 of 30 ° to 70 ° with respect to the horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1077390A JPH064249B2 (en) | 1989-03-28 | 1989-03-28 | Tread mold for retreaded tires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1077390A JPH064249B2 (en) | 1989-03-28 | 1989-03-28 | Tread mold for retreaded tires |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02253904A JPH02253904A (en) | 1990-10-12 |
| JPH064249B2 true JPH064249B2 (en) | 1994-01-19 |
Family
ID=13632565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1077390A Expired - Lifetime JPH064249B2 (en) | 1989-03-28 | 1989-03-28 | Tread mold for retreaded tires |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH064249B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5769975A (en) * | 1996-01-25 | 1998-06-23 | The Standard Products Company | Tire tread with cured portion and uncured end sections/wing portions |
| EP2020311B1 (en) * | 2006-05-24 | 2011-08-31 | The Yokohama Rubber Co., Ltd. | Pneumatic tire |
| JP4725464B2 (en) * | 2006-09-01 | 2011-07-13 | 横浜ゴム株式会社 | Pneumatic tire |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS548680A (en) * | 1977-06-21 | 1979-01-23 | Toyo Tire & Rubber Co | Method of renewing pnematic tire |
| JPS55160606A (en) * | 1979-05-28 | 1980-12-13 | Sumitomo Rubber Ind Ltd | Tread for reforming tire |
| JPS5946282B2 (en) * | 1979-12-11 | 1984-11-12 | 戸田工業株式会社 | Method for manufacturing metallic iron or alloy magnetic particle powder mainly composed of iron |
| JPS59102408U (en) * | 1982-12-23 | 1984-07-10 | 住友ゴム工業株式会社 | retreaded tires |
-
1989
- 1989-03-28 JP JP1077390A patent/JPH064249B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02253904A (en) | 1990-10-12 |
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