CN102935673A - Sulfurized metal mold for tire and tire for motorcycle - Google Patents
Sulfurized metal mold for tire and tire for motorcycle Download PDFInfo
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- CN102935673A CN102935673A CN2012101669269A CN201210166926A CN102935673A CN 102935673 A CN102935673 A CN 102935673A CN 2012101669269 A CN2012101669269 A CN 2012101669269A CN 201210166926 A CN201210166926 A CN 201210166926A CN 102935673 A CN102935673 A CN 102935673A
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Abstract
The invention provides a sulfurized metal mold for tire and a tire for motorcycle, which can ensure the strength of the metal mold, prevent cracks generated near to a root part of a tire shoulder or on a tire side portion, and furthermore prevent the driving performance from being reduced. The sulfurized metal mold for tire is used for manufacturing the tires for motorcycle and divided into a tire tread combination mold and one pair of side plates, a connection part is formed between a tire tread pattern block and the tire side portion of the tire for motorcycle, and a mold cavity is arranged to make a tread groove bottom line of the tread part bend in a way of projecting towards the outer side of the tire, and the mold breaking positions of the tire tread combination mold and the side plates are arranged on the outer surface of the connection part, furthermore the sulfurized metal mold for tire is formed to meet the prescribed conditions.
Description
Technical field
The present invention relates to manufacture metal sulphide mould and the motorcycle tire for tire of motorcycle tire.
Background technology
Tire has the metal die of the two-piece type that is divided into two with the metal sulphide mould and is divided into the metal die of many minutes patterns more than three, the metal die of many minutes patterns generally is configured to and is divided into tyre surface combination die and upper and lower side plate (for example, patent documentation 1).
For tire, the external diameter while in order to reduce, green tire being vulcanized changes, and in employing, has in the isostructural situation of section cushion of endless belt (JLB), high modulus cord, and the external diameter variable quantity of tire becomes and is less than the trench depth of tire.Therefore, in the situation that use the metal die of two-piece type to be manufactured, during matched moulds for green tire is contacted with the protuberance of metal die side tread surface, so use the metal die of many minutes patterns.
On the other hand, the motorcycle tire that the running on rough terrain that the cross-country race tire of take is representative is used, because the tire of the oblique configuration that does not have cushion etc. is main flow, so the metal die of general using two-piece type is manufactured.
Yet in recent years, in order to improve the performances such as tractive force, earth-grasping force, the high structure to the cushion rigidity also is studied in the motorcycle tire of not whole the use of travelling.
For this reason, in the manufacture of the motorcycle tire of not whole the use of travelling, need to use the metal die of many minutes patterns.
When the motorcycle tire of the cross-country use of metals mold manufacturing of using many minutes patterns, the die sinking position of metal die is set at the tire shoulder edge part.
Yet, because the motorcycle tire of not whole the use of travelling consists of the discontinuous pattern block of tire shoulder section, so, in the situation that form pattern block section with the tyre surface combination die, as shown in Figure 4, the lower end of tyre surface combination die 41 becomes sharp-pointed shape (the Y part of surrounding by circle in Fig. 4 (b)).Therefore, due to the combination die undercapacity, and damaged problem occurs while having carrying or during sulfuration etc.
For this reason, as shown in Figure 5, expected that the mode of the pattern block section integral body by the motorcycle tire to surround not whole the use of travelling is set the tyre surface combination die, prevented the scheme that metal die intensity descends.
Yet, in these cases, because the die sinking position of metal die is positioned at the root of pattern block on tire shoulder, so small stepped line produced on tire because of the existence of die sinking position, produce the root of the pattern block on tire shoulder be applied under steam large power, thus deposit be out of shape under steam when large near tire shoulder section root or sidewall section more easily more in the past than the problem cracked.Wherein, in Fig. 4,4 for the metal sulphide mould, 41 for tyre surface combination die, 42 be sharp-pointed part, the T of side plate, 43 ditches, 44 of using for the formation pattern block that the is located at pattern block section lower ends that are tyre surface combination die 41 the motorcycle tire that is the sulfuration object.5 ditches of using for the formation pattern block that is located at pattern block section for side plate, 53 for tyre surface combination die, 52 for metal sulphide mould, 51 in Fig. 5.
Therefore, in order to solve the above problems, the inventor has proposed structure as described below, in Japanese Patent Application 2010-293729, as shown in Figure 6, setting is formed between the root 65a of pattern block on tire shoulder 65 and makes the mutual continuous heavy section 64a of pattern block on tire shoulder 65, and makes the tyre surface combination die 61 of metal sulphide mould 6 and the die sinking position X of side plate 62 be positioned at heavy section 64a.Wherein, the ditch that in Fig. 6, symbol 63 is used for the formation pattern block that is located at tyre surface combination die 61,64 ditch, the 64b that use for the formation heavy section are that basic point (root), the X that heavy section summit, 65a are pattern block on tire shoulder 65 is die sinking position.
In these cases, metal die intensity can not descend, and can be suppressed near starting point (root) 65a of pattern block on tire shoulder 65 or sidewall section cracks.
Patent documentation 1: Japanese kokai publication hei 8-216620 communique
Yet, if always produce under steam near the tire shoulder edge of large distortion the projection (heavy section) that this rib shape is set, hinder tire to be out of shape swimmingly, so likely cause impact mitigation, road surface tracing ability with respect to road surface to descend, follow therewith, also may cause degradation driving performance under earth-grasping force to descend.
Summary of the invention
The present invention proposes in view of the above problems, its purpose is to provide metal sulphide mould and motorcycle tire for a kind of tire, can guarantee metal die intensity, be suppressed near tire shoulder section root or sidewall section cracks, and then can suppress the decline of driving performance.
The invention that technical scheme 1 is put down in writing is tire metal sulphide mould,
Be the tire that is split into tyre surface combination die and the pair of side plates metal sulphide mould for the manufacture of motorcycle tire, it is characterized in that,
Have die cavity, this die cavity is formed with connecting portion between the pattern block on tire shoulder of above-mentioned motorcycle tire and sidewall section, and the groove bottom line that makes fetus face is with to the outstanding mode bending in the tire outside,
The die sinking position of above-mentioned tyre surface combination die and above-mentioned side plate is positioned on the outer surface of above-mentioned connecting portion, and then
This tire forms and meets following condition (1)～(5) with the metal sulphide mould:
（1）H＜H1
H: the tire distance radially from above-mentioned die sinking position to tire maximum gauge position
H1: the tire distance radially that the tyre surface combination die moves when opening and closing above-mentioned tyre surface combination die
（2）10°≤θ≤25°
θ: above-mentioned pattern block on tire shoulder outer side surface is angle radially with respect to tire
（3）W≤0.15TW
W: the distance of the tire width direction of tire shoulder edge and above-mentioned die sinking position
TW: the distance of the tire width direction of tire shoulder edge and tire center line
（4）1.5mm≤h
H: the position that the groove bottom line of above-mentioned fetus face and above-mentioned sidewall section intersect, with the tire distance radially of above-mentioned die sinking position
（5）R1＜R2
R1: the curvature of the outer surface of above-mentioned sidewall section
R2: the curvature of the outer surface of above-mentioned connecting portion.
The invention that technical scheme 2 is put down in writing, the tire of putting down in writing in technical scheme 1, with in the metal sulphide mould, is characterized in that, meets the condition of 1.2 * R1<R2.
The invention that technical scheme 3 is put down in writing is a kind of motorcycle tire, and this motorcycle tire is to utilize the tire of claim 1 or claim 2 to manufacture with the metal sulphide mould, it is characterized in that, is provided with one or more layers cushion.
The invention that technical scheme 4 is put down in writing, in the motorcycle tire of putting down in writing in technical scheme 3, above-mentioned cushion is formed by the material of inextensibility.
The invention that technical scheme 5 is put down in writing in the motorcycle tire that technical scheme 3 or technical scheme 4 are put down in writing, is characterized in that above-mentioned cushion is the endless belt structure.
The invention that technical scheme 6 is put down in writing in the motorcycle tire of putting down in writing in technical scheme 3 to any one in technical scheme 5, is characterized in that the height of above-mentioned pattern block on tire shoulder is 8mm～19mm.
According to the present invention, can provide and can guarantee metal die intensity, be suppressed near tire shoulder section root, sidewall section cracks, and then can suppress metal sulphide mould and the motorcycle tire for tire that driving performance descends.
The accompanying drawing explanation
Fig. 1 is for schematically meaning to utilize the cutaway view of the related tire of embodiments of the present invention with the motorcycle tire of metal sulphide mould manufacture.
Fig. 2 is for schematically meaning the cutaway view of the related tire of embodiments of the present invention with the metal sulphide mould.
Fig. 3 is related tire describes with the die sinking position of metal sulphide mould to present embodiment of the present invention major part cutaway view.
Fig. 4 is for schematically meaning the cutaway view of existing tire by an example of metal sulphide mould, (a) for having the cutaway view at the position that forms the ditch that pattern block uses, (b) is the cutaway view at the position that do not form the ditch that pattern block uses.
Fig. 5 is for schematically meaning the cutaway view of existing tire by other examples of metal sulphide mould.
Fig. 6 is for schematically meaning the cutaway view of existing tire by other examples of metal sulphide mould.
Description of reference numerals: 1,4,5,6 ... tire metal sulphide mould; 11,41,51,61 ... the tyre surface combination die; 12,42,52,62 ... side plate; 13,43,53,63 ... form the ditch that pattern block is used; 44 ... the sharp-pointed part of the lower end of tyre surface combination die; 64 ... form the ditch that heavy section is used; 64a ... heavy section; 64b ... the summit of heavy section; 65 ... pattern block on tire shoulder; 65a ... the basic point of pattern block on tire shoulder; X ... die sinking position; T ... motorcycle tire; A ... fetus face; θ ... angle; B ... pattern block on tire shoulder; B1 ... the tire shoulder edge; B2 ... the pattern block on tire shoulder basic point; C ... sidewall section; D ... connecting portion; M ... cushion; H, W, TW, h ... distance; L ... the groove bottom line of fetus face; R1 ... the curvature of the outer surface of sidewall section; R2 ... the curvature of the outer surface of connecting portion.
The specific embodiment
Below, based on embodiment, the present invention will be described to use accompanying drawing.
A. tire metal sulphide mould
Fig. 1 is for schematically meaning to utilize the cutaway view of the related tire of embodiments of the present invention with the motorcycle tire of metal sulphide mould manufacture, Fig. 2 is for schematically meaning the major part cutaway view of the related tire of present embodiment with the metal sulphide mould, and Fig. 3 is for the cutaway view of the related tire of present embodiment with the die sinking position of metal sulphide mould is described.
As shown in Figure 1, the motorcycle tire T that cross-country race is used has fetus face A and the C of sidewall section.
As shown in Figures 2 and 3, the metal sulphide mould of the many minutes patterns that tire is the motorcycle tire used for the manufacture of cross-country race with metal sulphide mould 1, possess tyre surface combination die 11 and pair of side plates 12.Sign X tyre surface combination die 11 in figure and the matched moulds position (die sinking position) of side plate 12.
In addition, in the cavity surface of tyre surface combination die 11, be provided with the ditch 13 that the formation pattern block of the pattern block on tire shoulder B that forms motorcycle tire T is used.
In addition, the tire in present embodiment provides as follows by the shape of metal sulphide mould 1.
(1) the tire distance radially from die sinking position to tire maximum gauge position
Die sinking position X is owing to being to consider that the easy degree from metal sulphide mould 1 to tire and the motorcycle tire T that put into green tire (not vulcanized tyre) with set by the easy degree of metal sulphide mould 1 taking-up from tire, so the tire that while being subject to opening and closing tyre surface combination die 11, the tyre surface combination die moves distance H 1(radially is not shown) restriction.
Particularly, needs be made as the tire distance H radially from die sinking position X to tire maximum gauge position less than H1,, H are specified to H<H1 that is.
(2) angle of the outer side surface of pattern block on tire shoulder B
The pattern block on tire shoulder B of the pattern block on tire shoulder B motorcycle tire that especially cross-country race is used, outstanding to the outside of the width of motorcycle tire T.Yet, in the situation that the overhang of pattern block on tire shoulder B is excessive, after tyre vulcanization, when tyre surface combination die 11 moves radially along tire, the larger frictional resistance of generation between metal sulphide mould 1 for motorcycle tire T and tire, thus hinder moving smoothly of tyre surface combination die 11.Therefore, provide as follows.
That is, by the outer side surface of pattern block on tire shoulder B, with respect to tire, angle θ radially is specified to 10 °≤θ≤25 °.
In the situation that θ is too small, due to the outer side surface of pattern block on tire shoulder B close to uprightly, so, in order to obtain the continuity with the C of sidewall section, need to be set as extremely wide by the distance between the C of section of sidewall, left and right.Therefore, not only in the tyre contour outline design, be subject to large restriction, also tyre performance caused to bad impact.
On the other hand, if θ is excessive, while after sulfuration, taking out motorcycle tire, motorcycle tire T can block extension tyre surface combination die 11, thereby hinders moving smoothly of tyre surface combination die 11.
By being made as 10 °≤θ≤25 °, in the situation that open tyre surface combination die 11 in order to take out motorcycle tire, motorcycle tire T can not block extension tyre surface combination die 11, and mobile tyre surface combination die 11, can also avoid the bad impact that tyre performance is caused swimmingly.
(3) distance of the tire width direction of tire shoulder edge and die sinking position
By the distance W of the tire width direction of tire shoulder edge B1 and die sinking position X, with the tire width direction of tire shoulder edge B1 and tire center line be specified to 0<W≤0.15TW apart from TW.
The little side of distance W is favourable on the sulfuration rear tyre takes out aspect property, by it is located at tire shoulder edge B1 and tire center line apart from TW 15% in, can guarantee tire taking-up property.Yet, as mentioned above, the outer side surface of pattern block on tire shoulder B with respect to tire angle θ radially owing to being specified to 10 °≤θ≤25 °, so distance W can not be made as to 0.
(4) tire of pattern block on tire shoulder basic point and die sinking position distance radially
The point that groove bottom line L and the C of sidewall section that it is fetus face A that die sinking position X is set in from pattern block on tire shoulder basic point B2(intersects) the space out position of h, inboard radially to tire.
Thus, owing to can being made as continuous face in the tire of tyre surface combination die 11 is circumferential, so can guarantee the intensity of tyre surface combination die.
In addition, distance h is preferably and meets 1.5mm≤h.
(5) curvature of sidewall section and connecting portion
The curvature R1 of the outer surface of the C of sidewall section, with the relation of the curvature R2 of the outer surface of the connecting portion D of the basic point B2 that is connected pattern block on tire shoulder and the C of sidewall section, be fixed to R1<R2, more preferably be defined as 1.2 * R1<R2.In addition, die sinking position X is configured to be positioned at connecting portion D.
That is, if die sinking position X is arranged to sidewall section, the small ladder on the surface of the motorcycle tire T occurred because of die sinking position X, the starting point of the crackle while likely becoming squeegee action.
For this reason, the curvature R2 of the outer surface of connecting portion D is made as to the curvature R1 of the outer surface that is greater than the C of sidewall section, thereby makes near starting point (root) B2 of bend ratio pattern block on tire shoulder B of the C of sidewall section large while being out of shape at motorcycle tire T bearing load.
In addition, the outer surface by the connecting portion D less in bending forms small ladder, can reduce the danger that ladder small when squeegee action becomes the starting point of crackle.In addition, therefore also without above-mentioned heavy section is set.
(6) groove bottom line of fetus face
Make the groove bottom line L of fetus face A always have to till pattern block on tire shoulder basic point B2 to the outstanding curvature in the motorcycle tire outside.In addition, as mentioned above, owing to not needing heavy section, so can promote the distortion smoothly of motorcycle tire T.
B. motorcycle tire
Then, the tire that utilizes present embodiment is described with the motorcycle tire of metal sulphide mould manufacture.
As mentioned above, the groove bottom line L that motorcycle tire T forms fetus face A have to till pattern block on tire shoulder basic point B2 to the outstanding curvature in the tire outside.In addition, pattern block on tire shoulder basic point B2 is connected with the connecting portion that the C of sidewall section of curvature R1 forms by curvature R2.
In addition, to be set in pattern block on tire shoulder basic point B2 be above-mentioned curvature R2 to the space out curvature of ，Gai position, position of h of tire radially inner side to the die sinking position X of tyre vulcanization metal die.
In addition, because the groove bottom line L of fetus face A always has to the outstanding curvature in the tire outside, do not form heavy section, therefore can not hinder the distortion smoothly of tire, thereby can suppress near tire shoulder section starting point (root) B2, crackle occurs the C of sidewall section.
For the height of pattern block on tire shoulder B, when being applied to circumferential power, pattern block on tire shoulder B also suppressed the generation of crackle, so can be height fully by the height setting of pattern block on tire shoulder B.Particularly, be preferably set to 8～19mm.
By the height setting by pattern block on tire shoulder, more than 8mm, can, when running on rough terrain, take off fully unearthed.Therefore, can not cause that tractive force is not enough, earth-grasping force is not enough.In addition, by the height setting by pattern block on tire shoulder, be below 19mm, can not cause the decline of pattern block rigidity.
In addition, in the situation that motorcycle tire is oblique configuration, be preferably cushion (section cushion) M that adopts one deck or multilayer.The cord of cushion M is preferably used the material of the very difficult elongations such as steel, polyamide.In addition, in the situation that motorcycle tire is the meridian structure, be preferably the JLB structure.
(effect of present embodiment)
As mentioned above, according to present embodiment, there is following effect.
(1) the putting into and take out and become easily of green tire, productivity ratio is improved.
(2) when taking out tire, tire can not be stuck in the tyre surface combination die, mobile tyre surface combination die swimmingly, and can not cause bad impact to tyre performance yet.
(3) when the small ladder that can make to be formed at the surface of tyre of die sinking position becomes squeegee action, the danger of the starting point of crackle descends.And, can improve the real vehicle travelling.
(4) by the groove bottom line L that makes fetus face A have to till pattern block on tire shoulder basic point B2 to the outstanding curvature in the tire outside, and make do not there is heavy section etc. between pattern block on tire shoulder B, thereby can not hinder the distortion smoothly of tire.
(5) the sharp-pointed part that intensity is low can not be formed at the leading section of tyre surface combination die.Therefore, metal die intensity can not descend.
Embodiment
The example that embodiment 1～2, comparative example 1～12 is the motorcycle tire that uses different tires and use with metal sulphide mould manufacture cross-country race.Motorcycle tire is of a size of 120/80-19.
The condition of the having or not of each routine metal die type, heavy section, metal die die sinking position, H, θ, W, h and R2 is shown in table 1～table 3.
(evaluation test method)
Each above-mentioned embodiment, comparative example are carried out to the evaluation test of following content.
(1) intensity of metal die pattern block on tire shoulder section
Distortion when metal die is carried, while manufacturing, damaged occurrence rate have carried out judgement, evaluation.
(2) green tire is put into the performance of putting into of metal die
The tire occurred with contacting of metal die fetus face because of green tire when closing metal die is bad has carried out judgement, evaluation.
(3) taking-up of sulfuration rear tyre
To after vulcanization process whether because of tire and metal die powerful contact to wait at the taking-up aspect of performance have problems.
(4) the crackle durability at die sinking position place
Above-mentioned motorcycle tire is installed on to cross country motorcycle (capacity is 450cc), be about on the cross-country runway of loop of two minutes by the professional of cross-country race motorcycle at a circle required time and repeatedly travel continuously 30 minutes at dry pavement, the running time of utilization till the die sinking position generation crackle of motorcycle tire, the crackle durability of split cavity position is estimated.
(5) real vehicle operation stabilization performance
Similarly travel with above-mentioned, by the sense evaluation, earth-grasping force, impact absorption, stability, turning are estimated.
(evaluation result)
The evaluation result of each embodiment, comparative example is shown in table 1～table 3.Wherein, evaluation result is the expression of counting.The higher expression of counting is better.
Table 1
Table 2
Table 3
From table 1～table 3, can confirm, H, θ, W, h and R2 have obtained good result in the situation that meet the embodiment of condition of the present invention.
Comparative example is owing to not meeting R1<R2, so fail to obtain the result of enough satisfaction.
Above, describe the present invention based on embodiment, but the invention is not restricted to above-mentioned embodiment.In the scope identical and impartial with the present invention, also can apply to above-mentioned embodiment various changes.
Claims (6)
1. a tire metal sulphide mould, be the tire that is split into tyre surface combination die and the pair of side plates metal sulphide mould for the manufacture of motorcycle tire, it is characterized in that,
Have die cavity, this die cavity is formed with connecting portion between the pattern block on tire shoulder of above-mentioned motorcycle tire and sidewall section, and the groove bottom line that makes fetus face is with to the outstanding mode bending in the tire outside,
The die sinking position of above-mentioned tyre surface combination die and above-mentioned side plate is positioned on the outer surface of above-mentioned connecting portion, and then
This tire forms and meets following condition (1)～(5) with the metal sulphide mould:
（1）H＜H1
H: the tire distance radially from above-mentioned die sinking position to tire maximum gauge position
H1: the tire distance radially that the tyre surface combination die moves when opening and closing above-mentioned tyre surface combination die
（2）10°≤θ≤25°
θ: above-mentioned pattern block on tire shoulder outer side surface is angle radially with respect to tire
（3）W≤0.15TW
W: the distance of the tire width direction of tire shoulder edge and above-mentioned die sinking position
TW: the distance of the tire width direction of tire shoulder edge and tire center line
（4）1.5mm≤h
H: the position that the groove bottom line of above-mentioned fetus face and above-mentioned sidewall section intersect, with the tire distance radially of above-mentioned die sinking position
（5）R1＜R2
R1: the curvature of the outer surface of above-mentioned sidewall section
R2: the curvature of the outer surface of above-mentioned connecting portion.
2. tire according to claim 1 metal sulphide mould, is characterized in that,
Meet the condition of 1.2 * R1<R2.
3. a motorcycle tire, be to utilize the tire of claim 1 or claim 2 to manufacture with the metal sulphide mould, it is characterized in that,
Be provided with one or more layers cushion.
4. motorcycle tire according to claim 3, is characterized in that,
Above-mentioned cushion is formed by the material of inextensibility.
5. according to the described motorcycle tire of claim 3 or 4, it is characterized in that,
Above-mentioned cushion is the endless belt structure.
6. according to the described motorcycle tire of any one in claim 3 to 5, it is characterized in that,
The height of above-mentioned pattern block on tire shoulder is 8mm～19mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011177624A JP5307205B2 (en) | 2011-08-15 | 2011-08-15 | Tire vulcanization molds and motorcycle tires |
| JP2011-177624 | 2011-08-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102935673A true CN102935673A (en) | 2013-02-20 |
| CN102935673B CN102935673B (en) | 2016-04-13 |
Family
ID=47694611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210166926.9A Expired - Fee Related CN102935673B (en) | 2011-08-15 | 2012-05-25 | Tire metal sulphide mould and motorcycle tire |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5307205B2 (en) |
| CN (1) | CN102935673B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004042505A (en) * | 2002-07-12 | 2004-02-12 | Ngk Insulators Ltd | Manufacturing method for mold for molding tire |
| CN101203391A (en) * | 2005-06-23 | 2008-06-18 | 横滨橡胶株式会社 | Flat pneumatic radial tire for heavy duty and method of manufacturing the same |
| US20100200153A1 (en) * | 2006-02-22 | 2010-08-12 | Toyo Tire & Rubber Co., Ltd. | Molding Method for a Pneumatic Tire |
| CN101959660A (en) * | 2008-02-25 | 2011-01-26 | 横滨橡胶株式会社 | Apparatus and method for vulcanizing pneumatic tire |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4732776B2 (en) * | 2005-03-23 | 2011-07-27 | 株式会社ブリヂストン | Pneumatic tires for motorcycles |
| JP5088774B2 (en) * | 2007-03-30 | 2012-12-05 | 株式会社ブリヂストン | Pneumatic tires for motorcycles |
| JP2010195059A (en) * | 2009-02-20 | 2010-09-09 | Bridgestone Corp | Tire for motorcycle and method of manufacturing the same |
-
2011
- 2011-08-15 JP JP2011177624A patent/JP5307205B2/en not_active Expired - Fee Related
-
2012
- 2012-05-25 CN CN201210166926.9A patent/CN102935673B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004042505A (en) * | 2002-07-12 | 2004-02-12 | Ngk Insulators Ltd | Manufacturing method for mold for molding tire |
| CN101203391A (en) * | 2005-06-23 | 2008-06-18 | 横滨橡胶株式会社 | Flat pneumatic radial tire for heavy duty and method of manufacturing the same |
| US20100200153A1 (en) * | 2006-02-22 | 2010-08-12 | Toyo Tire & Rubber Co., Ltd. | Molding Method for a Pneumatic Tire |
| CN101959660A (en) * | 2008-02-25 | 2011-01-26 | 横滨橡胶株式会社 | Apparatus and method for vulcanizing pneumatic tire |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013039716A (en) | 2013-02-28 |
| CN102935673B (en) | 2016-04-13 |
| JP5307205B2 (en) | 2013-10-02 |
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Granted publication date: 20160413 Termination date: 20190525 |