JPH05200753A - Vulcanizing mold for solid tire for industrial vehicle - Google Patents
Vulcanizing mold for solid tire for industrial vehicleInfo
- Publication number
- JPH05200753A JPH05200753A JP4040153A JP4015392A JPH05200753A JP H05200753 A JPH05200753 A JP H05200753A JP 4040153 A JP4040153 A JP 4040153A JP 4015392 A JP4015392 A JP 4015392A JP H05200753 A JPH05200753 A JP H05200753A
- Authority
- JP
- Japan
- Prior art keywords
- tire
- rubber
- mold
- tread
- solid tire
- 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
- 239000007787 solid Substances 0.000 title claims abstract description 29
- 229920001971 elastomer Polymers 0.000 claims abstract description 83
- 239000005060 rubber Substances 0.000 claims abstract description 83
- 230000013011 mating Effects 0.000 claims abstract description 11
- 238000004073 vulcanization Methods 0.000 claims description 18
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
- Tyre Moulding (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、加硫成形時において、
産業車両用ソリッドタイヤの表面に生じがちであった割
れの発生を防止でき、耐久性の高いタイヤを生産しうる
産業車両用ソリッドタイヤ用の加硫金型に関する。BACKGROUND OF THE INVENTION The present invention is
The present invention relates to a vulcanization mold for a solid tire for an industrial vehicle, which can prevent the occurrence of cracks that tend to occur on the surface of the solid tire for an industrial vehicle and can produce a highly durable tire.
【０００２】[0002]
【従来の技術】従来、空気入りタイヤを加硫するとき
は、図５に示すように、生タイヤカバーａの内部に薄い
ゴムバッグよりなる所謂ブラダーｂを挿入し、このブラ
ダーｂに高圧スチームを押し付けて加硫する。このブラ
ダーｂは生タイヤカバーａを挿入した初期はシェーピン
グの作用をなし、加硫後はバキュームで先に充填した蒸
気を吸引して小さく折り畳む方式になっている。このた
め、生タイヤカバーａのゴム量はブラダーｂの収縮量に
より調節吸収されるので、熱で膨張してもゴムが金型ｃ
の合わせ目ｄから金型外にフローすることはない。2. Description of the Related Art Conventionally, when vulcanizing a pneumatic tire, as shown in FIG. 5, a so-called bladder b made of a thin rubber bag is inserted into a raw tire cover a, and a high-pressure steam is put into the bladder b. Press and vulcanize. The bladder b has a shaping function at the initial stage when the raw tire cover a is inserted, and after the vulcanization, the bladder b is of a system of sucking the previously filled vapor with a vacuum and folding it into a small size. Therefore, the amount of rubber of the raw tire cover a is adjusted and absorbed by the amount of contraction of the bladder b, so that the rubber is not clogged even when expanded by heat.
It does not flow out of the mold from the seam d.
【０００３】他方、ソリッドタイヤｅにあっては、フォ
ークリフト等の産業車両用タイヤとして、比較的低速か
つ高荷重の下で、しかもときには釘、木片、岩石等の散
在する悪路の走行に使用されることから、損傷をうけや
すく、従ってタイヤ内部までゴムが充填された中実のノ
ーパンクのタイヤであり、耐カット性、耐摩耗性等の諸
特性とともに、リムへの挿着、嵌合が強固であり、リム
スリップを防止することが要求される。On the other hand, the solid tire e is used as a tire for industrial vehicles such as forklift trucks, at a relatively low speed and under a high load, and is sometimes used for traveling on rough roads scattered with nails, wood chips, rocks and the like. Therefore, it is a solid, non-puncture tire that is easily damaged and therefore has rubber filled inside the tire.It has various characteristics such as cut resistance and wear resistance, as well as strong insertion and fitting to the rim. Therefore, it is required to prevent rim slip.
【０００４】従ってこのようなソリッドタイヤｅは接地
面側ｆに、耐摩耗性、耐損傷性に優れたゴムからなるト
レッドゴムｅ１を使用し、その内側にはリムとの嵌合圧
を高めるために圧縮弾性率の高いベースゴムｅ２を使用
し、夫々のゴムによって要求特性を分担させてきた。Therefore, in such a solid tire e, a tread rubber e1 made of rubber having excellent wear resistance and damage resistance is used on the ground contact surface side f, and the fitting pressure with the rim is increased inside the tread rubber e1. The base rubber e2 having a high compressive elastic modulus is used for each of the rubbers, and the required characteristics are shared by the respective rubbers.
【０００５】従って、このような中実に形成されたソリ
ッドタイヤを金型ｇ内で加硫するとき前記空気入りタイ
ヤのようにブラダーを使用することができない。このた
め生タイヤの加硫中のゴムの膨張によるゴムの増加量は
金型内の容量が一定であるため、空気入りタイヤのよう
にブラダーの変形によってゴムは金型内では吸収されず
上、下モールドの合わせ目においてオーバーフローが過
剰になったとき火山の噴火口のように割れ目が生じ、タ
イヤの外観を著しく損なうことになる。Therefore, when vulcanizing such a solid tire formed in the mold g, a bladder cannot be used unlike the pneumatic tire. Therefore, the amount of increase in rubber due to expansion of rubber during vulcanization of green tires is constant in the mold, so rubber is not absorbed in the mold due to deformation of the bladder like a pneumatic tire. When the overflow at the seam of the lower mold is excessive, cracks occur like a volcanic crater, which significantly impairs the appearance of the tire.
【０００６】[0006]
【発明が解決しようとする課題】本発明は叙上の問題に
鑑みて加硫後のソリッドタイヤの上下金型の合わせ目に
おけるトレッド部の割れを防止しタイヤ外観を向上しう
る作業車両用ソリッドタイヤ用の加硫金型を提供とする
ことを目的としている。SUMMARY OF THE INVENTION In view of the above problems, the present invention is a solid for a working vehicle capable of preventing the crack of the tread portion at the seam between the upper and lower molds of a solid tire after vulcanization and improving the tire appearance. It is intended to provide a vulcanizing mold for a tire.
【０００７】[0007]
【課題を解決するための手段】本発明は、リムに装着さ
れかつゴム組成物からなる環状のベースゴム層と、該ベ
ースゴム層のタイヤ半径方向外側を囲みかつ外周面がト
レッド面をなすトレッドゴム層とからなる産業車両用ソ
リッドタイヤを加硫成形するための産業車両用ソリッド
タイヤの加硫金型であって、タイヤ赤道面近傍に位置す
る合わせ面により２つ割りされた上型モールドと下型モ
ールドとを具える型本体に、前記タイヤのトレッド面を
形成しうる内向き面からタイヤ半径方向外型にのびかつ
前記合わせ面を通るゴム溜りを設けたことを特徴とする
産業車両用ソリッドタイヤ用の加硫金型である。SUMMARY OF THE INVENTION The present invention is directed to an annular base rubber layer which is attached to a rim and is made of a rubber composition, and a tread which surrounds the outer side of the base rubber layer in the tire radial direction and whose outer peripheral surface forms a tread surface. A vulcanization mold for an industrial vehicle solid tire for vulcanizing and molding an industrial vehicle solid tire comprising a rubber layer, the upper mold including two mating surfaces located near a tire equatorial plane. An industrial vehicle characterized in that a mold body including a lower mold is provided with a rubber pool extending from an inward surface capable of forming a tread surface of the tire to an outer mold in a tire radial direction and passing through the mating surface. It is a vulcanization mold for solid tires.
【０００８】[0008]
【作用】従って、加硫によるゴムの膨張、又はゴムの仕
込量の変動による金型内に介在する過剰となったゴム
は、ゴム溜まりにフローして調節され、かつそのまま加
硫される。加硫後このゴム溜りにできた加硫ゴムをカッ
トすることにより、従来、発生しがちであったトレッド
ゴム層外周面の上下金型が衝合する合わせ目近傍にでき
ていたゴム割れを防止することが出来る。Therefore, the excess rubber present in the mold due to the expansion of the rubber due to vulcanization or the variation in the amount of rubber charged flows into the rubber reservoir for adjustment, and is vulcanized as it is. By cutting the vulcanized rubber that has formed in this rubber pool after vulcanization, the rubber cracks that have been formed in the vicinity of the seams where the upper and lower molds abut on the outer peripheral surface of the tread rubber layer, which was apt to occur in the past, are prevented. You can do it.
【０００９】[0009]
【実施例】以下本発明の一実施例を図面に基づき説明す
る。本発明に係る金型を用いて形成される産業車両用ソ
リッドタイヤ１は、図４に示す如くリムＲに取付けられ
る環状のベースゴム層２と、その半径方向外側を囲むト
レッドゴム層３とからなるタイヤ基体４を具え、又タイ
ヤ基体４には本実施例ではコード補強層６が配される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. A solid tire 1 for an industrial vehicle formed by using a mold according to the present invention comprises an annular base rubber layer 2 attached to a rim R and a tread rubber layer 3 surrounding the outer side in the radial direction as shown in FIG. In the present embodiment, the cord reinforcing layer 6 is arranged on the tire base body 4.
【００１０】またベースゴム層２は、ビードベースライ
ンＢＬからの高さＴＣを、前記リムＲのフランジＲＦの
ビードベースラインＢＬからの高さＨよりも高く、タイ
ヤの半径方向断面高さＴＨの３０〜７０％の範囲に形成
される。又ベースゴム層２は、カーボンで補強され、Ｊ
ＩＳＡ硬度が７５度かつ９０度以下のゴム組成物を用い
て形成され、該ベースゴム層２は、その内周面に、前記
リムＲが嵌入、押圧されることにより該リムＲに取付け
られる。なお前記ゴム組成物には短繊維等を混入して補
強することも出来る。The base rubber layer 2 has a height TC from the bead base line BL which is higher than a height H from the bead base line BL of the flange RF of the rim R and a radial cross-section height TH of the tire. It is formed in the range of 30 to 70%. The base rubber layer 2 is reinforced with carbon,
The base rubber layer 2 is formed by using a rubber composition having an ISA hardness of 75 degrees and 90 degrees or less. The base rubber layer 2 is attached to the rim R by fitting and pressing the rim R on the inner peripheral surface thereof. The rubber composition may be reinforced by incorporating short fibers or the like.
【００１１】前記トレッドゴム層３は、その外周面がト
レッド面３Ｆをなし、又本実施例では、耐カット性及び
耐摩耗性に優れたゴムからなりかつタイヤのトレッド面
を形成するキャップトレッド９と、その内側のクッショ
ン性に優れるクッションゴム層１０との２層体として形
成することにより車両の乗心地を改善している。The outer peripheral surface of the tread rubber layer 3 forms a tread surface 3F, and in this embodiment, the cap tread 9 is made of rubber having excellent cut resistance and abrasion resistance and forms a tread surface of a tire. And a cushion rubber layer 10 having an excellent cushioning property inside thereof are formed as a two-layer body to improve the riding comfort of the vehicle.
【００１２】クッションゴム層１０は、ＪＩＳＡ硬度４
０〜６５度の軟質ゴムとし、該ゴム層１０の厚さＴＢは
タイヤの半径方向断面高さＴＨの２５〜５０％の範囲と
することが望ましい。又クッションゴム層１０は、天然
ゴム又はブタジエン系のゴムにカーボンブラックを３０
〜５０ＰＨＲ配合した柔軟なゴム組成物が好適に使用さ
れる。The cushion rubber layer 10 has a JISA hardness of 4
Desirably, the soft rubber is 0 to 65 degrees, and the thickness TB of the rubber layer 10 is in the range of 25 to 50% of the radial cross-section height TH of the tire. The cushion rubber layer 10 is made of natural rubber or butadiene rubber with 30 carbon black.
A flexible rubber composition containing ˜50 PHR is preferably used.
【００１３】前記キャップトレッド９は、ＪＩＳＡ硬度
が６０〜７５度程度、かつ耐摩耗性、耐カット性に優れ
たゴム組成物を用いるのが好ましい。ＪＩＳ硬度が６０
度以下になると耐カット性、耐摩耗性に劣り、又ＪＩＳ
硬度７５度をこえるとグリップ性能が低下することがあ
るからである。For the cap tread 9, it is preferable to use a rubber composition having a JISA hardness of about 60 to 75 degrees and excellent abrasion resistance and cut resistance. JIS hardness is 60
If it is less than 100 degrees, it will be inferior in cut resistance and wear resistance.
This is because if the hardness exceeds 75 degrees, the grip performance may deteriorate.
【００１４】なおトレッドゴム層３は、クッションゴム
層１０を設けることなく、キャップトレッド９のみによ
って形成することもできる。The tread rubber layer 3 may be formed only by the cap tread 9 without providing the cushion rubber layer 10.
【００１５】前記コード補強層６は、有機繊維コード
を、タイヤ周方向に対して０〜５°の角度で傾けてプラ
イ６Ａ，６Ｂによって、本例では、２層体として形成さ
れている。The cord reinforcing layer 6 is formed as a two-layer body in this example by the plies 6A and 6B inclining the organic fiber cord at an angle of 0 to 5 ° with respect to the tire circumferential direction.
【００１６】有機繊維コードは、例えばナイロン、ポリ
エステルなどのタイヤファブリック用のコードであり、
引揃えて３０％モジュラスが４０〜１５０kg／cm2 のゴ
ムをコーティングすることにより帯状のプライ６Ａ，６
Ｂが形成される。The organic fiber cord is a cord for tire fabric such as nylon and polyester,
Aligning and coating the rubber with a 30% modulus of 40 to 150 kg / cm 2 to form strip-shaped plies 6A, 6
B is formed.
【００１７】なおコード補強層６は、２層以上の複数層
巻としてもよく、又複数回巻きするときにおいて長尺の
プライを連続して複数回巻回させてよく、短尺の１周長
さのプライを重ねて巻くのもよい。さらに１本乃至複数
本の有機繊維コードを揃えた小巾の帯状ストリップを、
螺旋状に巻装することによりプライを形成することもで
きる。The cord reinforcing layer 6 may be wound in a plurality of layers of two or more layers, and when winding a plurality of times, a long ply may be continuously wound a plurality of times, and a short length of one circumference. It is also good to stack the plies of. In addition, a narrow strip strip with one or more organic fiber cords
The ply can also be formed by spirally winding.
【００１８】前記産業車両用ソリッドタイヤ１は、その
成形に際して加硫金型１１を用いて加硫される。The solid tire 1 for industrial vehicles is vulcanized by using a vulcanization mold 11 when molding the solid tire 1.
【００１９】加硫金型１１は、合せ面Ｍにより衝合する
上型モールド１２、下型モールド１２Ｂとからなる型本
体１２及び前記産業車両用ソリッドタイヤ１のビードベ
ース面３Ｆを形成しうるクリップ部１３とからなり、又
クリップ部１３も前記合せ面Ｍと略面一な分割面により
２つ割りされた上型クリップリング１５と下型クリップ
リング１６とによって形成される。なお本実施例では型
本体１２の前記合せ面Ｍはタイヤ赤道Ｃ上に位置する。The vulcanization mold 11 is a clip that can form a mold body 12 composed of an upper mold 12 and a lower mold 12B that abut against each other on a mating surface M, and a bead base surface 3F of the solid tire 1 for industrial vehicles. The clip portion 13 is also composed of an upper die clip ring 15 and a lower die clip ring 16 which are divided into two by a dividing surface which is substantially flush with the mating surface M. In this embodiment, the mating surface M of the mold body 12 is located on the tire equator C.
【００２０】型本体１２には、図２に詳示する如く前記
産業車両用ソリッドタイヤ１の前記トレッド面３Ｆと向
き合う内向き面１７にタイヤ半径方向外型にのびるゴム
溜まりＲが設けられる。ゴム溜まりＲは、その巾寸法ｔ
を１．０mm〜３．０mmとしかつタイヤ半径方向の長さｌ
を１０〜２０mmとした、本実施例では断面が方形かつ内
向き面の全周に亘り環状に形成される。又ゴム溜まりＲ
は、上型モールド１２Ａ、下型モールド１２Ｂの前記合
わせ目Ｍを通る位置に形設される。As shown in detail in FIG. 2, the mold body 12 is provided with a rubber reservoir R extending to the outer mold in the tire radial direction on an inward surface 17 facing the tread surface 3F of the solid tire 1 for industrial vehicle. The rubber reservoir R has a width t
Is 1.0 mm to 3.0 mm and the length l in the tire radial direction is
In the present embodiment, the cross section is square and is formed in an annular shape over the entire circumference of the inward surface. In addition, rubber reservoir R
Is formed at a position passing through the seam M of the upper mold 12A and the lower mold 12B.
【００２１】然して加硫金型１１の下型モールド１２Ｂ
を図示しないプレスの下部材に、又上型モールド１２Ａ
をプレスの上部材にそれぞれ取付けるとともに、下部
材、上部材を互いに近離される動作を行うことにより、
上型、下型各モールド１２Ａ、１２Ｂも近離し、かつ近
接により上型、下型各モールド１２Ａ、１２Ｂは前記合
わせ面Ｍが図１に示す如く衝合する。However, the lower mold 12B of the vulcanization mold 11
To the lower member of the press (not shown) and the upper mold 12A.
Is attached to the upper member of the press respectively, and the lower member and the upper member are moved closer to each other,
The upper and lower molds 12A and 12B are also moved closer to each other, and due to the proximity, the mating surface M of the upper and lower molds 12A and 12B abuts each other as shown in FIG.
【００２２】上型、下型各モールド１２Ａ、１２Ｂ間に
未加硫状態の生タイヤ１０Ｒを装填するとともに上型、
下型モールド１２Ａ、１２Ｂを密着させ、所定の時間、
一定の加硫温度、例えば１６０℃で加硫される。An unvulcanized green tire 10R is loaded between the upper and lower molds 12A and 12B, and the upper mold and
The lower molds 12A and 12B are brought into close contact with each other for a predetermined time,
It is vulcanized at a constant vulcanization temperature, for example 160 ° C.
【００２３】なお図６に示す従来の金型ｇを用いた場合
にはこの加硫作業により生タイヤｅは に１００kg／cm
2 の圧力をうけているので生タイヤｅが熱で膨張された
ゴムがこの金型ｇの合わせ目ｈよりオーバーフローして
金型内の体積を一定にする。又トレッド表面のゴムから
加硫されながらトレッドゴムが内部のオーバーフローす
るため、先に加硫したトレッド面のゴムが割れ目を形成
し、この割れ目より内部のゴムがオーバーフローしてい
たのである。When the conventional mold g shown in FIG. 6 is used, the vulcanization work causes the green tire e to reach 100 kg / cm.
Since the pressure of 2 is applied, the rubber in which the raw tire e is expanded by heat overflows from the joint h of the mold g to make the volume inside the mold constant. Further, since the inside of the tread rubber overflows while being vulcanized from the rubber on the tread surface, the rubber on the tread surface that has been vulcanized first forms a crack, and the inside rubber overflows from this crack.
【００２４】しかし、ゴム溜りＲを型本体１２の合わせ
目Ｍに設けることにより、余剰なゴムがこのゴム溜まり
Ｒにオーバーフローすることになり、ゴム溜りＲ中のゴ
ムに割れ目が形成され、ソリッドタイヤ本体１１のトレ
ッド面３Ｆには割れ目が生じなくなる。However, by providing the rubber pool R at the joint M of the mold body 12, excess rubber overflows into the rubber pool R, and cracks are formed in the rubber in the rubber pool R, so that a solid tire is obtained. No cracks are formed on the tread surface 3F of the main body 11.
【００２５】従って、加硫後このゴム溜りＲの余剰ゴム
をトレッド面３Ｆから切断することによりトレッド３の
表面はキレイに滑らかに仕上げることができる。Therefore, after the vulcanization, the surplus rubber in the rubber pool R is cut from the tread surface 3F so that the surface of the tread 3 can be finished smoothly and smoothly.
【００２６】なお前記ゴム溜まりＲの巾ｔが１．０mm未
満では、余剰ゴムのゴム溜まり切断作業に手間を要し、
作業能率が低下する。又長さｌが１０mm未満では、トレ
ッド面に割れ目が生じる危険があり２０mmをこえると余
剰ゴムのゴム溜まりＲへの進入が不完全となるからであ
る。If the width t of the rubber reservoir R is less than 1.0 mm, it takes a lot of time to cut the excess rubber into the rubber reservoir.
Work efficiency decreases. Also, if the length l is less than 10 mm, there is a risk of cracks on the tread surface, and if it exceeds 20 mm, the excess rubber will not be completely introduced into the rubber reservoir R.
【００２７】ゴム溜まりＲは図３に示す如く半径方向外
外側に向かって巾寸度が漸減する台形状の断面に形成す
ることも出来る。巾寸度は開口側ｔ１、奥部ｔ２とも
１．０〜３．０mmの範囲とするのが好ましい。The rubber reservoir R may be formed in a trapezoidal cross section in which the width dimension gradually decreases toward the outer side in the radial direction as shown in FIG. The width dimension is preferably in the range of 1.0 to 3.0 mm for both the opening side t1 and the inner side t2.
【００２８】[0028]
【発明の効果】叙上の如く本発明の産業車両用ソリッド
タイヤの加硫金型は、２つ割りされた上型モールド、下
型モールドを具える型本体に、タイヤのトレッド面を形
成しうる内向き面にゴム溜まりを設けることを要旨とし
ているため、生タイヤの余剰ゴムはゴム溜まりに進入し
ゴム溜まりのゴムに割れ目が生じ、この割れ目の部分を
除去することによって従来発生しがちであったトレッド
面の割れを防止でき、タイヤの見映えを向上し、かつ耐
久性を高めうる産業車両用ソリッドタイヤを経済的に提
供することが出来る。As described above, the vulcanization mold of the solid tire for industrial vehicles according to the present invention has a tread surface of a tire formed on a mold body having an upper mold half and a lower mold half which are divided into two parts. Since the main idea is to provide a rubber pool on the inner surface of the tire, the surplus rubber of the raw tire enters the rubber pool and cracks occur in the rubber in the rubber pool, which is apt to occur conventionally by removing this crack. It is possible to economically provide a solid tire for an industrial vehicle that can prevent the existing tread surface from cracking, improve the appearance of the tire, and enhance the durability.
【図１】本発明の一実施例を示す加硫金型の断面図であ
る。FIG. 1 is a sectional view of a vulcanizing mold showing an embodiment of the present invention.
【図２】本発明のゴム溜りの一実施例を拡大して示す断
面図である。FIG. 2 is an enlarged sectional view showing an embodiment of a rubber reservoir of the present invention.
【図３】ゴム溜まりの他の実施例を拡大して示す断面図
である。FIG. 3 is an enlarged sectional view showing another embodiment of the rubber reservoir.
【図４】産業車両用ソリッドタイヤの断面図である。FIG. 4 is a sectional view of a solid tire for an industrial vehicle.
【図５】従来の空気入りタイヤ用金型の左半分を示す断
面図である。FIG. 5 is a cross-sectional view showing a left half of a conventional pneumatic tire mold.
【図６】従来の産業車両用ソリッドタイヤ用金型の左半
分を示す断面図である。FIG. 6 is a cross-sectional view showing the left half of a conventional solid tire mold for industrial vehicles.
１ 産業用ソリッドタイヤ ２ ベースゴム層 ３ トレッドゴム層 ３Ａ トレッド面 ４ タイヤ基体 １２ 型本体 １２Ａ 上型モールド １２Ｂ 下型モールド １７ 内向き面 Ｃ タイヤ赤道面 Ｍ 合わせ面 Ｒ ゴム溜まり ｌ 長さ ｔ 巾 1 Industrial solid tire 2 Base rubber layer 3 Tread rubber layer 3A Tread surface 4 Tire base 12 Model body 12A Upper mold 12B Lower mold 17 Inward surface C Tire equatorial surface M Mating surface R Rubber pool l Length t Width
───────────────────────────────────────────────────── 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 Internal reference number FI technical display location B29L 30:00 4F
Claims (2)
状のベースゴム層と、該ベースゴム層のタイヤ半径方向
外側を囲みかつ外周面がトレッド面をなすトレッドゴム
層とからなる産業車両用ソリッドタイヤを加硫成形する
ための産業車両用ソリッドタイヤの加硫金型であって、
タイヤ赤道面近傍に位置する合わせ面により２つ割りさ
れた上型モールドと下型モールドとを具える型本体に、
前記タイヤのトレッド面を形成しうる内向き面からタイ
ヤ半径方向外型にのびかつ前記合わせ面を通るゴム溜り
を設けたことを特徴とする産業車両用ソリッドタイヤ用
の加硫金型。1. An industrial vehicle comprising an annular base rubber layer which is mounted on a rim and is made of a rubber composition, and a tread rubber layer which surrounds the outer side of the base rubber layer in the tire radial direction and whose outer peripheral surface forms a tread surface. A vulcanization mold for a solid tire for industrial vehicles for vulcanizing and molding a solid tire,
A mold body including an upper mold and a lower mold divided into two by a mating surface located near the tire equatorial plane,
A vulcanization mold for a solid tire for industrial vehicles, comprising a rubber pool extending from an inward surface capable of forming a tread surface of the tire to an outer mold in the tire radial direction and passing through the mating surface.
３．０mm、かつタイヤ半径方向の長さを１０〜２０mmと
したリング状に形成したことを特徴とする産業車両用ソ
リッドタイヤ用の加硫金型。2. The rubber reservoir has a width dimension of 1.0 to
A vulcanization mold for a solid tire for industrial vehicles, which is formed into a ring shape having a length of 3.0 mm and a radial length of 10 to 20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4040153A JP2558987B2 (en) | 1992-01-29 | 1992-01-29 | Vulcanizing mold for solid tires for industrial vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4040153A JP2558987B2 (en) | 1992-01-29 | 1992-01-29 | Vulcanizing mold for solid tires for industrial vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05200753A true JPH05200753A (en) | 1993-08-10 |
| JP2558987B2 JP2558987B2 (en) | 1996-11-27 |
Family
ID=12572824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4040153A Expired - Lifetime JP2558987B2 (en) | 1992-01-29 | 1992-01-29 | Vulcanizing mold for solid tires for industrial vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2558987B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7670124B2 (en) | 2007-05-29 | 2010-03-02 | Toyo Tire & Rubber Co., Ltd. | Metal mold for vulcanizing tire treads |
| US8535031B2 (en) * | 2012-02-14 | 2013-09-17 | Bridgestone Americas Tire Operations, Llc | Pneumatic tire mold adapter |
| CN106457887A (en) * | 2014-05-14 | 2017-02-22 | 住友橡胶工业株式会社 | Airless tire and method of manufacturing same |
| CN112476986A (en) * | 2020-11-03 | 2021-03-12 | 江西德友科技有限公司 | Production mold for hollow inflation-free tire |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5780040A (en) * | 1980-09-12 | 1982-05-19 | Du Pont | O-ring molding die |
| JPS59129136A (en) * | 1983-01-17 | 1984-07-25 | Hayashi Uchimura | Mold for compression molding of tire for caster |
| JPS6131714U (en) * | 1984-07-30 | 1986-02-26 | 住友ゴム工業株式会社 | Mold for forming ring-shaped solid rubber products |
| JPS63274511A (en) * | 1987-05-07 | 1988-11-11 | Bridgestone Corp | Production of radial tire |
-
1992
- 1992-01-29 JP JP4040153A patent/JP2558987B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5780040A (en) * | 1980-09-12 | 1982-05-19 | Du Pont | O-ring molding die |
| JPS59129136A (en) * | 1983-01-17 | 1984-07-25 | Hayashi Uchimura | Mold for compression molding of tire for caster |
| JPS6131714U (en) * | 1984-07-30 | 1986-02-26 | 住友ゴム工業株式会社 | Mold for forming ring-shaped solid rubber products |
| JPS63274511A (en) * | 1987-05-07 | 1988-11-11 | Bridgestone Corp | Production of radial tire |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7670124B2 (en) | 2007-05-29 | 2010-03-02 | Toyo Tire & Rubber Co., Ltd. | Metal mold for vulcanizing tire treads |
| US8535031B2 (en) * | 2012-02-14 | 2013-09-17 | Bridgestone Americas Tire Operations, Llc | Pneumatic tire mold adapter |
| CN106457887A (en) * | 2014-05-14 | 2017-02-22 | 住友橡胶工业株式会社 | Airless tire and method of manufacturing same |
| EP3144160A4 (en) * | 2014-05-14 | 2017-11-15 | Sumitomo Rubber Industries, Ltd. | Airless tire and method of manufacturing same |
| US10259265B2 (en) | 2014-05-14 | 2019-04-16 | Sumitomo Rubber Industries, Ltd. | Airless tire and method of manufacturing same |
| CN112476986A (en) * | 2020-11-03 | 2021-03-12 | 江西德友科技有限公司 | Production mold for hollow inflation-free tire |
| CN112476986B (en) * | 2020-11-03 | 2022-04-22 | 江西德友科技有限公司 | Production mold for hollow inflation-free tire |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2558987B2 (en) | 1996-11-27 |
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