CN103128891A - Vulcanization forming method of pneumatic tyres for cars - Google Patents
Vulcanization forming method of pneumatic tyres for cars Download PDFInfo
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- CN103128891A CN103128891A CN2012104510324A CN201210451032A CN103128891A CN 103128891 A CN103128891 A CN 103128891A CN 2012104510324 A CN2012104510324 A CN 2012104510324A CN 201210451032 A CN201210451032 A CN 201210451032A CN 103128891 A CN103128891 A CN 103128891A
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- green tire
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- shaping
- mold closing
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Abstract
The invention provides a vulcanization forming method of pneumatic tyres for cars. Nip glue can be prevented even under a condition that the rigidity of the lower part of a green tyre is relatively large, so that the pneumatic tyres for the cars with excellent appearance and quality can be made. In the vulcanization forming method of the pneumatic tyres for the cars, the green tyres are vulcanization shaped by using a vulcanization apparatus with a vulcanization mold. The vulcanization mold comprises a plurality of dies including a combined die and a side surface die. The vulcanization forming method of the pneumatic tyres for the cars is characterized in that in a mold-closing process, a mold-closing operation is restarted after being temporarily discontinued for 2-5 seconds until a distance between a joint face of the combined die and a joint face of the side surface die becomes zero.
Description
Technical field
The present invention relates to the car that uses with airtyred sulfuration method for shaping in the sulfidization molding process of green tire.
Background technology
Car is generally made by the operation of green tire (not vulcanized tyre) being vulcanized typing with pneumatic tires such as pneumatic tires.Fig. 2 is the figure of explanation sulfuration method for shaping, shows the cutaway view for an example of the structure of vulcanizing the sulfurizing mould of finalizing the design.As shown in Figure 2, sulfurizing mould 1, possess up and down pair of combined moulds tool 2, side mould 3 and tire lip ring 4.5 expression airbags.
Sulfuration typing is by green tire T being installed on the inside of sulfurizing mould 1, airbag 5 is applied interior pressure, green tire T is pressed on to heat under the state of cavity surface of sulfurizing mould 1 to carry out.
In the sulfuration type-approval process, when making sulfurizing mould 1 closed (during the mold closing action), for example sandwich sometimes the phenomenon of green tire (doubling) between the composition surface of the composition surface of assembling die 2 and side mould 3.
In order to prevent the doubling of such green tire, for example propose to have following sulfuration method for shaping, that is: the increase of pressing in the airbag corresponding to the matched moulds of following mould and discharge inert gas from airbag, thus substantially constant ground keeps the pressure (for example patent documentation 1) of finalizing the design.
Patent documentation 1: Japanese kokai publication hei 4-369534 communique
Yet in the tyre vulcanization method for shaping that patent documentation 1 is put down in writing, existence can't fully prevent the situation of doubling.That is, as shown in Figure 3, have following situation: the surperficial Ts1(of green tire bottom is from the position of the Breadth Maximum of green tire to the part of tyre bead when mold closing moves) fully be not connected to the cavity surface of side mould 3, but become the state away from cavity surface.In Fig. 3, Ts is the gap between the composition surface that green tire is surperficial, surface, S that Ts2 is green tire top are assembling die 2 and side mould 3.
When continuing to carry out the mold closing action when keeping such state, the surperficial Ts2(on green tire top begins part till the position of the Breadth Maximum of green tire from tyre sidewall) further strongly pressed on mould, thus there is the possibility of the gap S generation doubling between the composition surface of assembling die 2 and side mould 3.Especially the rigidity of green tire bottom T1 should be inclined to more greatly more remarkable.
Summary of the invention
Therefore, problem of the present invention is to provide a kind of car with airtyred sulfuration method for shaping, even also can prevent doubling in the situation that the rigidity of green tire bottom is larger, thereby can make outward appearance, colory car pneumatic tire.
The inventor concentrates on studies in order to solve above-mentioned problem, found that to utilize the invention of following record can solve above-mentioned problem, until completed the present invention.
The invention of technical scheme 1 record is a kind of car with airtyred sulfuration method for shaping, the vulcanization plant that use possesses sulfurizing mould vulcanizes typing to green tire, described vulcanization plant has a plurality of moulds that comprise assembling die and side mould, described car is characterised in that with airtyred sulfuration method for shaping
In the mold closing operation, making the mold closing action temporarily stop 2 seconds～restart again to carry out the mold closing action after 5 seconds, until the distance between the composition surface of the composition surface of described assembling die and described side mould becomes zero.
The car of putting down in writing according to technical scheme 1 is with airtyred sulfuration method for shaping, the invention of technical scheme 2 record is characterised in that, described mold closing action temporarily stops 2 seconds～and 5 seconds be that distance between the composition surface of the composition surface of described assembling die and described side mould is carried out when being in the scope of 1mm～10mm.
The car of putting down in writing according to technical scheme 1 or technical scheme 2 is with airtyred sulfuration method for shaping, and the invention of technical scheme 3 records is characterised in that, utilizes airbag to be 0.05MPa～0.20MPa from the inboard to the pressure of described green tire pressurization.
According to the present invention, even can provide the rigidity of a kind of in the situation that green tire bottom larger, the car that also can prevent doubling is with airtyred sulfuration method for shaping.
Description of drawings
Fig. 1 is the cutaway view that is shown schematically in the state of sulfurizing mould when mold closing action is temporarily stopped and green tire.
Fig. 2 is the figure of explanation sulfuration method for shaping.
Fig. 3 is the cutaway view of the state of the green tire in schematically illustrated existing sulfuration method for shaping.
Description of reference numerals: 1 ... sulfurizing mould; 2 ... assembling die; 3 ... the side mould; 4 ... tire lip ring; 5 ... airbag; D ... distance between the composition surface of the composition surface of assembling die and side mould; S ... gap between the composition surface of the composition surface of assembling die and side mould; T ... green tire; T1 ... the green tire bottom; T2 ... green tire top; Ts ... the green tire surface; Ts1 ... the surface of green tire bottom; Ts2 ... the surface on green tire top.
The specific embodiment
Below, based on embodiment and with reference to accompanying drawing, the present invention is described.
Fig. 1 is shown schematically in sulfuration method for shaping of the present invention, the cutaway view of the sulfurizing mould when the mold closing action temporarily stops and the state of green tire.In Fig. 1,2 expression assembling dies, 3 expression side moulds, S represent that gap, the d between the composition surface of assembling die 2 composition surfaces and side mould 3 represents that distance, the Ts of gap S represent that green tire is surperficial, Ts1 represents that surface, the Ts2 of green tire bottom represent the surface on green tire top.In addition, in the following description, also describe with reference to Fig. 2, Fig. 3.
At first, green tire is installed on sulfurizing mould 1, then begin to carry out the sulfurizing mould closed action and to airbag 5(with reference to Fig. 2) interior injection heating pressure medium.Then, described gap S become 1mm～10mm apart from d the time, make the mold closing action temporarily stop 2 seconds～5 seconds.After temporarily stopping end, restart to carry out the mold closing action and proceed the sulfuration typing.
In the present embodiment, the mold closing action is temporarily stopped, thus green tire bottom T1 is pressed on mould 3, thereby the surperficial Ts that makes green tire becomes state shown in Figure 1, is the state of the cavity surface butt of the surperficial Ts1 of green tire bottom and side mould 3 from state shown in Figure 3.Its result, become mild from the surperficial Ts1 of green tire bottom towards the curve shape of the surperficial Ts2 on green tire top, and 5 couples of green tire upper T 2(of airbag are with reference to Fig. 2) interior pressure relative reduce, therefore can suppress the pressing force of green tire upper T 2 towards assembling die 2, side mould 3.
Between the composition surface of the assembling die 2 when preferably, the mold closing action temporarily being stopped and the composition surface of side mould 3 is 1mm～10mm apart from d.The described reason that is made as more than 1mm apart from d is, if less than 1mm, before doubling might occur with mould butt (being adjacent to) effectively at green tire T.In addition, if describedly surpass 10mm apart from d, can make green tire bottom T1(with reference to Fig. 2 due to mold closing action after this) weaken with the tightening degree of mould, thus the typing that might can't expect.
In addition, when the composition surface height with assembling die 2 and side mould 3 be the assembling die height 20%～30% the time, can obtain better effect, be therefore preferred.In addition, when the tire that the present invention is used for the high flat tire of easy generation doubling is made, can bring into play more significant effect.
And, when the interior pressure of airbag during less than 0.05MPa, might produce not exposed (bare) etc. because pressing, on the other hand, when surpassing 0.20MPa, whole pressing force increases, and doubling might occur.Therefore the interior pressure of airbag is preferably 0.05～0.20MPa.
Embodiment
Below, by embodiment, the present invention is carried out more specific description.
1. the sulfuration of green tire typing
(embodiment 1～4)
Having implemented car under the condition of following tire size, sulfuration typing pressure, sulfurizing mould finalizes the design with the sulfuration of green tire with pneumatic tire.
Tire size: 195/65R15
Sulfuration typing pressure: 0.1MPa
Sulfurizing mould: minute mould
Assembling die is divided into 9 parts
The height 23% of assembling die/side mould snap-latch surface
When implementing, the maximum ga(u)ge of green tire bottom is made as 13mm, assembling die 2 when mold closing action is temporarily stopped is made as 1mm, 5mm, these three levels of 10mm with the gap (apart from d) on the composition surface of side mould 3, with dwell time be made as 2 seconds, 3.5 seconds, 5 seconds these three levels.Embodiment 1～4 gap, dwell time separately has been shown in table 1.
(comparative example 1,2)
Except the green tire maximum ga(u)ge being made as 10mm, 13mm and not arranging when mold closing moves temporary transient dwell time, all the other adopt the method identical with embodiment to carry out sulfuration and finalize the design, and it is made as respectively comparative example 1, comparative example 2.
(embodiment 5,6, comparative example 3,4)
Except the gap is made as 0.5mm, 5mm, these three levels of 11mm and with dwell time be made as 1 second, 3.5 seconds, 6 seconds these three levels, all the other adopt the method identical with embodiment to carry out sulfuration and finalize the design.Each routine gap, dwell time have been shown in table 1.
2. estimate
(embodiment 1～6, comparative example 1～4)
(1) evaluation method
Take out at once green tire after mould is fully closed, whether investigation doubling has occured.
(2) evaluation result
Sum up in table 1 evaluation result is shown.
Table 1
According to table 1 as can be known, when green tire bottom maximum ga(u)ge is 10mm, is the rigidity of green tire bottom when low, even temporarily do not stop also doubling can occuring, but when green tire bottom maximum ga(u)ge is 13mm, doubling can occur.And, even in the situation that carried out temporarily stopping, if the gap is not in scope and the dwell time of 1mm ~ 10mm is not in 2 seconds ~ during the scope of 5 seconds, doubling can occur.On the other hand, if the gap is in scope and the dwell time of 1mm ~ 10mm is in 2 seconds～during the scope of 5 seconds, even green tire bottom maximum ga(u)ge is 13mm, that is to say, also can not produce doubling even the rigidity of green tire bottom is higher.
Although abovely describe the present invention based on embodiment, the present invention is not limited to above-mentioned embodiment.In or the scope that be equal to identical with the present invention, can apply various changes to above-mentioned embodiment.
Claims (3)
1. a car is with airtyred sulfuration method for shaping, to use the vulcanization plant that possesses sulfurizing mould green tire to be vulcanized the method for typing, described vulcanization plant has a plurality of moulds that comprise assembling die and side mould, described car is characterised in that with airtyred sulfuration method for shaping
In the mold closing operation, making the mold closing action temporarily stop 2 seconds～restart again to carry out the mold closing action after 5 seconds, until the distance between the composition surface of the composition surface of described assembling die and described side mould becomes zero.
2. car according to claim 1 with airtyred sulfuration method for shaping, is characterized in that,
The action of described mold closing temporarily stops 2 seconds～and 5 seconds be that distance between the composition surface of the composition surface of described assembling die and described side mould is carried out when being in the scope of 1mm～10mm.
3. car according to claim 1 and 2 with airtyred sulfuration method for shaping, is characterized in that,
Utilize airbag to be 0.05MPa～0.20MPa from the inboard to the pressure of described green tire pressurization.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011260328A JP5406265B2 (en) | 2011-11-29 | 2011-11-29 | Vulcanization shaping method for pneumatic tires for passenger cars |
| JP2011-260328 | 2011-11-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103128891A true CN103128891A (en) | 2013-06-05 |
| CN103128891B CN103128891B (en) | 2016-02-10 |
Family
ID=48489660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210451032.4A Active CN103128891B (en) | 2011-11-29 | 2012-11-12 | The airtyred sulfuration method for shaping of car |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5406265B2 (en) |
| CN (1) | CN103128891B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110103495A (en) * | 2019-05-06 | 2019-08-09 | 中车青岛四方车辆研究所有限公司 | Solid wheel of vehicle sulfurizing mould |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6682241B2 (en) * | 2015-11-12 | 2020-04-15 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | Tire manufacturing method and tire molding apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04369534A (en) * | 1991-06-19 | 1992-12-22 | Bridgestone Corp | Method and apparatus for shaping green tire |
| CN1043864C (en) * | 1993-11-12 | 1999-06-30 | 塞德普鲁公司 | Mold of tyre and molding of tyre |
| EP1213573A2 (en) * | 2000-12-08 | 2002-06-12 | The Goodyear Tire & Rubber Company | Method of detecting steam expansion vessel leakage |
| JP2004130636A (en) * | 2002-10-09 | 2004-04-30 | Sumitomo Rubber Ind Ltd | Tire molding apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2955202B2 (en) * | 1995-02-13 | 1999-10-04 | 住友ゴム工業株式会社 | Pneumatic tire |
| JP2008290334A (en) * | 2007-05-24 | 2008-12-04 | Bridgestone Corp | Tire vulcanization method |
| JP5008708B2 (en) * | 2009-09-30 | 2012-08-22 | 住友ゴム工業株式会社 | Mold for tire |
-
2011
- 2011-11-29 JP JP2011260328A patent/JP5406265B2/en active Active
-
2012
- 2012-11-12 CN CN201210451032.4A patent/CN103128891B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04369534A (en) * | 1991-06-19 | 1992-12-22 | Bridgestone Corp | Method and apparatus for shaping green tire |
| CN1043864C (en) * | 1993-11-12 | 1999-06-30 | 塞德普鲁公司 | Mold of tyre and molding of tyre |
| EP1213573A2 (en) * | 2000-12-08 | 2002-06-12 | The Goodyear Tire & Rubber Company | Method of detecting steam expansion vessel leakage |
| JP2004130636A (en) * | 2002-10-09 | 2004-04-30 | Sumitomo Rubber Ind Ltd | Tire molding apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110103495A (en) * | 2019-05-06 | 2019-08-09 | 中车青岛四方车辆研究所有限公司 | Solid wheel of vehicle sulfurizing mould |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013111859A (en) | 2013-06-10 |
| JP5406265B2 (en) | 2014-02-05 |
| CN103128891B (en) | 2016-02-10 |
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