CN103692675B - The manufacture method of pneumatic tire - Google Patents
The manufacture method of pneumatic tire Download PDFInfo
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- CN103692675B CN103692675B CN201310409545.3A CN201310409545A CN103692675B CN 103692675 B CN103692675 B CN 103692675B CN 201310409545 A CN201310409545 A CN 201310409545A CN 103692675 B CN103692675 B CN 103692675B
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Abstract
The present invention provides a kind of manufacture method of pneumatic tire, it is possible to increase the dismounting of rigid core for building.This method manufactures pneumatic tire by core forming process（1）.Include in the manufacture method：In rigid core for building（10）Outer surface（18）Paste tyre element and form green tire（1L）Green tire formation process（S1）；To green tire（1L）The vulcanization process vulcanized（S2）；Tire after cured（1）Dismantle rigid core for building（10）Rigid core for building dismounting process（S3）.Green tire formation process（S1）Including liner formation process（S11）, in rigid core for building（10）Outer surface（18）In at least one pair of tyre bead forming face（18c、18c）, make the rubber strip of banding respectively（24）Lateral margin（24t）It is overlapped and by rubber strip（24）Curl is pasted from tire radial outside towards inner side, is consequently formed liner（9）Bead part side region（9c）.
Description
Technical field
The present invention relates to the manufacture method of the pneumatic tire for the dismounting that can improve rigid core for building.
Background technology
In recent years, in order to improve the uniformity of tire, it is proposed that the scheme of pneumatic tire is manufactured using rigid core for building, its
In, the rigid core for building has the outer surface that the inner cavity surface of tire is formed（With reference to following patent documents 1）.Such as edge wheel
Multiple sectors are circumferentially connected and are assembled into rigid core for building by tire.By making each sector of this rigid core for building in order successively
Moved towards tire radial direction inner side, each sector can be dismantled from pneumatic tire.
In the manufacture method of pneumatic tire of rigid core for building has been used, first, implement to glue in the outer surface of rigid core for building
Tyre element is pasted to form the green tire formation process of green tire.Next, implement what green tire was vulcanized together with rigid core for building
Vulcanization process.Also, the rigid core for building for carrying out each sector of tire dismantling after cured dismantles process.
In addition, improving productivity ratio to digest interim stock so that green tire formation process includes liner formation process,
In the liner formation process, such as Figure 11（a）It is shown, in rigid core for building a outer surface b, such as by by the rubber strip g of banding
Paste curl and form liner d.
Patent document 1：Japanese Unexamined Patent Publication 11-254906 publications
Generally, the sidewall of pneumatic tire is stretched out compared with bead part towards tire axial outside.Therefore, rigid type
Core a outer surface b is again formed as, and forms the sidewall forming face b1 of the sidewall court compared with forming the tyre bead forming face b2 of bead part
Stretched out on the outside of tire axial.
Therefore, such as Figure 11（b）It is shown, in rigid core for building dismantles process, taken turns by the rigid core for building a tomorrow that moves radially
The axially external bead part f to tire e of tire is pressed and is allowed to expand.Thus, easily bead part f inner cavity surface h with just
Larger friction is produced between property core a sidewall forming face b1.Inner cavity surface h is easily resulted in because of this larger friction
Liner d rubber strip g stripping, so as to exist easily make rigid core for building a dismounting decline the problem of.
The content of the invention
The present invention be in view of the actual conditions of the above and propose, its main purpose is, providing a kind of pneumatic tire
Manufacture method, in a pair of bead forming face of rigid core for building, make the lateral margin of the rubber strip of banding overlapped respectively and by institute
Rubber strip is stated to paste curl towards tire radial direction inner side from tire radial outside and form the bead part side region of liner,
As basic, it is possible to increase the dismounting of rigid core for building.
The invention described in technical scheme 1 in the present invention is the manufacture method of pneumatic tire, and this method is to be used to pass through
Core forming process manufactures method of the sidewall than bead part towards the pneumatic tire stretched out on the outside of tire axial, the pneumatic tire
Manufacture method be characterised by, including：Green tire formation process, by the way that tyre element is pasted on into the outer of assembling type rigid core
Surface and form green tire, wherein, for above-mentioned assembling type rigid core, by the way that multiple sectors are connected along tire is circumferential
And the outer surface that the inner cavity surface of above-mentioned pneumatic tire is formed is formed, also, by making above-mentioned each sector towards tire footpath
Moved successively in order to inner side and above-mentioned each sector can be dismantled from above-mentioned pneumatic tire；Vulcanization process, to above-mentioned green tire
Vulcanized with together with above-mentioned rigid core for building；And rigid core for building dismounting process, it is above-mentioned just from the tire dismantling after above-mentioned vulcanization
Property core, above-mentioned green tire formation process includes liner formation process, in the liner formation process, in the upper of above-mentioned rigid core for building
A pair of bead forming face that at least above-mentioned bead part is formed in outer surface is stated, makes the side of the rubber strip of banding respectively
Edge is overlapped and above-mentioned rubber strip is pasted into curl from tire radial outside towards tire radial direction inner side, thus shape
Into the bead part side region of liner.
In addition, on the basis of the manufacture method of the pneumatic tire described in technical scheme 1, remembered for technical scheme 2
For the invention of load, in the above-mentioned outer surface of above-mentioned rigid core for building at least from the tire axial of above-mentioned rigid core for building most
Big width position makes the lateral margin of above-mentioned rubber strip overlapped and by above-mentioned rubber strip towards the region of tire radial direction inner side
Band pastes curl from tire radial outside towards tire radial direction inner side.
In addition, on the basis of the manufacture method of the pneumatic tire described in technical scheme 1 or 2, for the institute of technical scheme 3
For the invention of record, in the above-mentioned outer surface of above-mentioned rigid core for building from the equator of above-mentioned rigid core for building towards tire radially
The region of inner side, make the lateral margin of above-mentioned rubber strip overlapped and take turns above-mentioned rubber strip from tire radial outside direction
Tire radially inner side pastes curl.
In addition, on the basis of the manufacture method of pneumatic tire in technical scheme 1~3 described in either a program, for
For invention described in technical scheme 4, the width of above-mentioned rubber strip is 5mm~25mm, and the thickness of above-mentioned rubber strip is
0.3mm~1.5mm.
In addition, on the basis of the manufacture method of pneumatic tire in technical scheme 1~4 described in either a program, for
Invention described in technical scheme 5, the width of the overlapping overlapping portion formed in above-mentioned lateral margin of above-mentioned rubber strip is above-mentioned rubber
Less than the 50% of the above-mentioned width of band.
The manufacture method of the pneumatic tire of the present invention includes：Tyre element is pasted on the outer surface of rigid core for building and formed
The green tire formation process of green tire；The vulcanization process vulcanized to green tire together with rigid core for building；And the wheel after cured
The rigid core for building dismounting process of tire dismounting rigid core for building.
By making multiple sectors be connected up in tire week to be formed to enter the inner cavity surface of pneumatic tire in rigid core for building
The outer surface of row shaping.In addition, by make each sector in order successively towards tire radial direction inner side it is mobile by rigid core for building from
Pneumatic tire takes out.
Green tire formation process includes liner formation process, in liner formation process, in the outer surface of the rigid core for building
A pair of bead forming face that at least bead part is formed, make the lateral margin of the rubber strip of banding overlapped respectively and
The rubber strip is pasted into curl from tire radial outside towards tire radial direction inner side, is consequently formed the bead part side of liner
Region.
In the bead part side region of liner, the inner cavity surface quilt of the lateral margin of the tire radial outside of rubber strip in pneumatic tire
In the adjacent rubber strip covering of radial outside.Thus, bead part side region can prevent rubber strip because each sector is towards wheel
The movement of tire radially inner side and reversely peel off.Therefore, in the manufacture method of the present invention, rubber strip can effectively be prevented
Peel off, so as to improve the dismounting of rigid core for building.
Brief description of the drawings
Fig. 1 is the sectional view of one of the pneumatic tire for showing the manufacture method manufacture using present embodiment.
Fig. 2 is the exploded perspective view of one for showing rigid core for building.
Fig. 3 is the sectional view of the rigid core for building formed with green tire.
Fig. 4 is the side view of the core body from axis direction.
Fig. 5 is formed at the sectional view of the green tire of the outer surface of rigid core for building.
Fig. 6 is the sectional view illustrated to vulcanization process.
Fig. 7 is the view sub-anatomy illustrated to rigid core for building dismounting process.
Fig. 8 is a sectional view illustrated to liner formation process.
Fig. 9 is the stereogram for showing rubber strip.
Figure 10（a）It is Fig. 8 partial enlarged drawing, Figure 10（b）It is to show towards pressing on the outside of tire axial to be expanded by sector
The partial sectional view for the bead part opened.
Figure 11（a）It is the sectional view illustrated to existing liner formation process, Figure 11（b）It is that rigid core for building is dismantled
The sectional view that process illustrates.
Description of reference numerals：
1... pneumatic tire；1L... green tires；10... rigid core for building；24... rubber strip.
Embodiment
Hereinafter, one embodiment of the present invention is illustrated referring to the drawings.
The manufacture method of the pneumatic tire of present embodiment（Hereinafter, sometimes referred to simply as " manufacture method "）, it is using rigidity
Core simultaneously manufactures pneumatic tire by core forming process（Hereinafter, sometimes referred to simply as " tire "）Method.
As shown in figure 1, the tire 1 of present embodiment is configured to the radial of car.The tire 1 is provided with：From tire
Face 2 reaches the carcass 6 of the bead core 5 of bead part 4 by sidewall 3；Above-mentioned carcass 6 tire radial outside and
The belt 7 of the inside configuration of fetus face 2；And it is configured at the liner 9 of the inner side of carcass 6.In addition, tire 1 is formed as, such as
When being filled 5% internal pressure, sidewall 3 is stretched out than bead part 4 towards tire axial outside.
Refer to " during the internal pressure of filling 5% ", the wheel rim of tire 1 is assembled in regular wheel rim and is filled with the nothing of regular internal pressure certainly
The normal state of load rises, until being decompressed to the state of 5% internal pressure of regular internal pressure.
" regular wheel rim " refers to advise according to each tire in the schematism including the specification comprising tire institute foundation
The wheel rim of the fixed specification, such as standard rim is then represented if JATMA, then represented if TRA " Design Rim ", or if
ETRTO then represents " Measuring Rim ".
" regular internal pressure " refers to the air pressure for carrying out regulatory specifications according to each tire, and highest air pressure is then represented if JATMA,
Then represent table " described in TIRE LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES " if TRA
Maximum, then represented if ETRTO " INFLATION PRESSURE ", but be set to without exception in the case where tire 1 is used for car
180kPa。
Carcass 6 is by the radial construction that for example arranges body cord with 75 °~90 ° of angle relative to tire equator C
More than one layer of carcass ply form, be to be made up of one layer of carcass ply 6A in the present embodiment.In addition, for example with poly-
The organic fiber cords such as ester or all-steel cord are as body cord.
Carcass ply 6A is linearly crossed between bead part 4,4 and prolonged in going in ring by a pair of sidewall portion 3,3 from fetus face 2
Stretch.For the carcass ply 6A of present embodiment, the inner 6e of its tire radial direction inner side bead part 4 form terminal and simultaneously
It is not rolled-up.
Bead core 5 is configured to include being configured at the interior side core of the medial surface of tire axial in carcass ply 6A inner 6e sides
5A and be configured at tire axial lateral surface outboard wick 5B.By the way that a bead 5c is circumferential spirally along tire
It is overlapping winding and formed as interior side core 5A and outboard wick 5B.
In addition, the medial surface in interior side core 5A tire axial is configured with inner bead triangle rubber 8i.In addition, in outboard wick 5B
The lateral surface of tire axial be configured with outer bead triangle rubber 8o.These bead apex 8i, 8o are formed by vulcanie.
Belt 7 is by belt cord is for example arranged extremely relative to tire equator C with 10 °~40 ° of small angle inclination
Few two layers of belt ply is formed, and is made up of in the present embodiment two layers radially inner and outer of belt ply 7A, 7B of tire.So
Belt ply 7A, 7B it is overlapping on the cross one another direction of belt cord.In addition, for example with all-steel cord or fragrant adoption
The organic fiber cords such as acid amides are as belt cord.
Liner 9 is in go in ring linearly to cross between a pair of bead core 5,5, and is configured at the substantially whole area of inner cavity surface 17
Domain.The liner 9 is for example made up of the non-breathable elastomeric material that thickness t is 0.5mm~2.0mm or so.In addition, as non-breathable
Property rubber, such as be adapted to reach more than 60 mass parts butyl rubber using the proportioning of the rubber constituent relative to 100 mass parts
（Or its derivative）Butyl-like rubber, the proportioning of preferably butyl rubber reaches more than 80 mass parts, more preferably butyl
The proportioning of rubber reaches 100 mass parts.
As shown in FIG. 2 and 3, rigid core for building 10 is provided with：The core body 11 of ring-type；Inside insert in the core body 11
Centre bore 11h core 12；And it is configured at a pair of sidewalls body 13L, 13U of the both sides of the axis direction of core body 11.
Core body 11 is configured to include the multiple sectors 14 of different sizes being circumferentially split to form along tire.Such as Fig. 4
Shown, the sector 14 of present embodiment includes：The first sector that circumferential lengths L1 is gradually reduced towards tire radial direction inner side
14A；And the second sector 14B that circumferential lengths L2 gradually increases towards tire radial direction inner side.First sector 14A and
Two sector 14B are alternately arranged in tire circumference.
By making the second sector 14B and the first sector 14A in order successively towards tire radial direction inner side movement and energy
It is enough to decompose this core body 11.In addition, by the way that each sector 14A, 14B are connected to be assembled into core in tire circumference
Main body 11, thus, as shown in figure 3, foring the outer surface 18 that the inner cavity surface 17 of tire 1 is formed.Present embodiment
Inner surface configuration of the outer surface 18 close to the tire 1 during such as internal pressure of filling 5%.
As shown in figure 5, outer surface 18 includes：The tyre surface forming face that the inner cavity surface 17 of the fetus face 2 of tire 1 is formed
18a；The sidewall forming face 18b that the inner cavity surface 17 of sidewall 3 is formed；And the inner cavity surface 17 of bead part 4 is carried out into
The tyre bead forming face 18c of shape.In addition, in the present embodiment, sidewall forming face 18b is formed as than tyre bead forming face 18c towards wheel
The axially external stretching of tire.And then it is provided with sidewall forming face 18b towards the maximum Breadth Maximum position of tire axial degree protruding outside
Put 20.
As shown in Fig. 2 core 12 is formed as cylindric.As shown in figure 3, the centre bore of core body 11 is inserted in the core 12
11h.Thus, core 12 can prevent the first sector 14A and the second sector 14B radially medial movement.
In addition, as shown in Fig. 2 in the outer peripheral face of core 12 and sector 14A, 14B inner peripheral surface, it is respectively formed with along firm
Property core 10 axis direction extend and the wedge-shaped slot 19a or wedge-shaped slot 19b that are mutually clamped.Thus, core 12 and fan
Shape part 14A, 14B are connected to and can only relatively moved in axis direction.
The sidewall bodies 13L of one side is fixed on the side of the axis direction of core 12.In addition, the sidewall bodies 13U of the opposing party is fixed
In the opposite side of the axis direction of core 12.And then the sidewall bodies 13U of the opposing party is via being arranged in the centre bore 12h of core 12
Threaded portion 15 and screwed togather by loading and unloading freely with above-mentioned centre bore 12h.As shown in figure 3, such a pair of sidewalls body 13L,
13U prevents movement of the core 12 towards axis direction, so as to keep being integrated core body 11 with core 12.
In addition, each sidewall bodies 13L, 13U lateral surface be provided with towards axis direction supporting axle portion 16 protruding outside.Should
Support axle portion 16 by loading and unloading freely such as with by rigid core for building 10 to sulfurizing mould conveying conveying device（Diagram saves
Slightly）Deng clamping section 23 link.
Next, the manufacture method of the present invention is illustrated.
As shown in figure 5, in the manufacture method of present embodiment, first, enter to be about to the stickup such as unvulcanized tyre element
Green tire 1L green tire formation process S1 is formed in the outer surface 18 of rigid core for building 10.Herein, it is " unvulcanized " to include not thorough sulphur
All forms before change.Therefore, the form for being somebody's turn to do " unvulcanized " includes so-called semi-cure state.
In the green tire formation process S1 of present embodiment, carry out forming liner 9 in the outer surface 18 of rigid core for building 10
Liner formation process S11 and by the tyre elements such as carcass ply 6A be pasted on liner 9 outside paste adhering processes S12.
In liner formation process S11, liner 9 is pasted on just in a manner of across a pair of bead forming face 18c, 18c
The outer surface 18 of property core 10.In addition, in adhering processes S12, such as in the outer surface for the rigid core for building 10 for being pasted with liner 9
18, carcass ply 6A, each core 5A, 5B, each bead apex 8i, 8o, sidewall rubber 3G, belt 7 and tyre surface are pasted successively
Rubber 2G etc..Thus, green tire 1L is formed in the outer surface 18 of rigid core for building 10.
Next, implement the vulcanization process S2 vulcanized to green tire 1L together with rigid core for building 10.As shown in fig. 6,
In vulcanization process S2, the sulfurizing mould 22 for the die cavity 22s for possessing the outer surface formed with green tire 1L is used.By green tire 1L and rigidity
Core 10 is put into the sulfurizing mould 22 together, and then green tire 1L is vulcanized.Also, after vulcanization terminates, by sulphur
Tire 1 after change is dismantled together with rigid core for building 10 from sulfurizing mould 22.
Next, carry out the rigid core for building dismounting process S3 that the tire 1 after cured dismantles rigid core for building 10.It is firm at this
Property core dismounting process S3 in, as shown in fig. 7, first, each sidewall bodies 13L, 13U of rigid core for building 10 and core 12 are decomposed and
They are dismantled from rigid core for building 10.Next, make the second sector 14B and the first sector 14A in order successively towards wheel
Tire radially inner side moves, and thus dismantles their tires 1 after cured.Thereby, it is possible to produce the tire 1 shown in Fig. 1.
Also, in the liner formation process S11 of the present invention, as shown in figure 8, making the rubber for being formed as banding shown in Fig. 9
The lateral margin 24t of adhesive tape band 24 is overlapped and the rubber strip 24 is spirally pasted on to the outer surface of rigid core for building 10
18.Thus, such as Figure 10（a）It is shown, liner 9 is formd, lateral margin 24t of the liner 9 formed with rubber strip 24 be overlapping to be formed
Multiple overlapping portions 25.This liner formation process S11 helps to digest interim stock so as to improve productivity ratio.
In addition, as shown in figure 8, being pasted on the liner 9 of the outer surface 18 of rigid core for building 10 includes：It is pasted on rigid core for building 10
Tyre surface forming face 18a fetus face side region 9a；It is pasted on sidewall forming face 18b sidewall side region 9b；And paste
In tyre bead forming face 18c bead part side region 9c.Sidewall side region 9b is formed as than bead part side region 9c towards tire
Axially external stretching.
As described above, the sidewall forming face 18b of rigid core for building 10 stretches out than tyre bead forming face 18c towards tire axial outside.
Therefore, such as Fig. 7 and Figure 10（b）It is shown, in rigid core for building dismounting process S3, because each sector 14A, 14B towards tire radially
The movement of inner side and the bead part 4 of tire 1 is expanded by sidewall forming face 18b towards pressing on the outside of tire axial.Thus, exist
Larger friction is easily produced between the bead part side region 9c of liner 9 and the sidewall forming face 18b of rigid core for building 10.It is this compared with
Big friction easily causes the stripping of the rubber strip 24 of liner 9, so as to decline easily the dismounting of rigid core for building 10.
Therefore, in the liner formation process S11 of present embodiment, such as Fig. 8 and Figure 10（a）It is shown, in rigid core for building
At least one pair of tyre bead forming face 18c, 18c in 10 outer surface 18, respectively by rubber strip 24 from tire radial outside inwardly
Paste curl in side.Such as Figure 10（b）It is shown, liner 9 bead part side region 9c and in inner cavity surface 17, rubber strip 24
The lateral margin 24t of tire radial outside covered in the adjacent rubber strip 24 of tire radial outside.
Thus, in the bead part side region 9c of liner 9, the lateral margin of the tire radial outside of rubber strip 24 can be prevented
24t is reversely peeled off because of each sector 14A, 14B towards the movement of tire radial direction inner side by the outer surface 18 of rigid core for building 10.Cause
This, in the manufacture method of the present invention, can effectively prevent the stripping of rubber strip 24, so as to improve rigid core for building 10
Dismounting.And then in the present embodiment, such as without coating releasing agent in the outer surface 18 of rigid core for building 10, so as to
A problem that enough preventing the poor attachment of rubber strip 24 as caused by releasing agent.
As shown in Figure 8, it is preferable that in the outer surface 18 of rigid core for building 10 from the Breadth Maximum position of rigid core for building 10
20 paste curl towards the region of tire radial direction inner side, rubber strip 24 from tire radial outside towards tire radial direction inner side.
Thus, such as Figure 10（b）It is shown, Breadth Maximum with rigid core for building 10 of the rubber strip 24 in liner 9 can be more efficiently prevented from
What position 20 contacted is partially stripped.And then as shown in figure 8, in this embodiment, due to can from Breadth Maximum position 20 to
Tyre bead forming face 18c continuously pastes rubber strip 24, so the durability of liner 9 can be improved further.
And then, it is preferable that the equator 10c from rigid core for building 10 in the outer surface 18 of rigid core for building 10 is towards tire footpath
To the region of inner side, rubber strip 24 pastes curl from tire radial outside towards tire radial direction inner side.Thus, the energy of liner 9
Enough broad scopes in tire radially reliably prevent the stripping of rubber strip 24.
And then in this embodiment, due to can be continuous to tyre bead forming face 18c from the equator 10c of rigid core for building 10
Rubber strip 24 is pasted on ground, therefore can further improve the durability of liner 9.
As shown in figure 9, the width W1 of rubber strip 24 is preferably 5mm~25mm.Wherein, if the width W1 of rubber strip 24
Less than 5mm, then rubber strip 24 winding number increase, it is possible to decline the productivity ratio of liner 9.If on the contrary, rubber strip 24
Stickup precise decreasings of the width W1 more than 25mm, then rubber strip 24, it is possible to decline the productivity ratio of liner 9.Based on this
Kind viewpoint, the width W1 of rubber strip 24 is more preferably more than 10mm, in addition, more preferably below 20mm.
Based on same viewpoint, the thickness T1 of rubber strip 24 is preferably below 1.5mm, furthermore it is preferred that for 0.3mm with
On.
And then such as Figure 10（a）It is shown, for the width W2 of the overlapping overlapping portions 25 formed of lateral margin 24t of rubber strip 24
For, the preferably width W1 of rubber strip 24（Shown in Fig. 9）Less than 50%.Wherein, if the width W2 of overlapping portion 25 exceedes rubber
The 50% of the width W1 of adhesive tape band 24, then the radially adjacent overlapping portion 25,25 of tire overlap each other.Due to this overlapping portion 25,
The 25 overlapping rubber thickness for causing liner 9 locally increases, so easily becoming the starting point of the damage of liner 9.Thus, having can
It can not can fully improve the dismounting of rigid core for building 10.If the on the contrary, width of the width W2 deficiencies rubber strip 24 of overlapping portion 25
The 10% of W1, it is likely that can not fully cover the lateral margin 24t of the tire radial outside of rubber strip 24.Based on this viewpoint, weight
The width W2 in folded portion 25 is preferably less than the 35% of the width W1 of rubber strip 24, furthermore it is preferred that being more than 15%.
Although the particularly preferred embodiment of the present invention is described in detail above, the invention is not restricted to illustrate
Embodiment, also can be deformed into various modes to implement.
[embodiment]
The tire for having used the rubber strip shown in table 1 is made based on manufacture method of the invention, and to the firm of them
The property dismounting of core and the productivity ratio of liner are evaluated.In addition, in order to be compared, such as Figure 11（a）It is shown, it is right
Rubber strip is pasted into curl towards outside from tire radial direction inner side and forms the tire of liner, has also carried out same comment
Valency.Wherein, common specification is as follows.
Tire size：235/40R19
The number of the sector of rigid core for building：8
Method of testing is as follows.
The dismounting ＞ of ＜ rigid core for building
By it is each for try tire vulcanize respectively it is multiple, rigid core for building dismantle process in, make the sector of rigid core for building with mutual
The speed differed moves towards tire radial direction inner side respectively, so as to the time needed for dismounting rigid core for building（Cycle time）Carry out
Measurement.And then after rigid core for building is pulled down, the mode observed by visual observation confirms whether liner generates rubber strip
The situation of stripping.Also, it is each for examination tire in, obtain respectively do not occur rubber strip stripping multiple cycle times in,
Most short cycle time.Numerical value is smaller, and the dismounting of rigid core for building is better.
The productivity ratio ＞ of ＜ liners
Rubber strip shown in table 1 is spirally pasted on to the outer surface of rigid core for building, so as to each for examination wheel to being formed
Average time needed for the liner of tire is measured.Result is represented so that comparative example to be set to 100 index.Numerical value is smaller more
It is good.
The result of test is shown in table 1.
[table 1]
It is able to confirm that according to the result of test, the dismounting of rigid core for building can be improved using the manufacture method of embodiment.
Claims (5)
1. a kind of manufacture method of pneumatic tire, this method is to be used to manufacture sidewall than bead part court by core forming process
The method of the pneumatic tire stretched out on the outside of tire axial,
The manufacture method of the pneumatic tire is characterised by, including：
Green tire formation process, green tire is formed by the way that tyre element to be pasted on to the outer surface of assembling type rigid core, wherein, it is right
For the assembling type rigid core, by the way that multiple sectors are connected to be formed to the pneumatic tire along tire is circumferential
The outer surface that inner cavity surface is formed, also, by each sector is moved successively in order towards tire radial direction inner side and
Each sector can be dismantled from the pneumatic tire；
Vulcanization process, the green tire is vulcanized together with the rigid core for building；And
Rigid core for building dismantles process, from rigid core for building described in the tire dismantling after the vulcanization,
The green tire formation process includes liner formation process, in the liner formation process, described in the rigid core for building
A pair of bead forming face that at least bead part is formed in outer surface, make the lateral margin of the rubber strip of banding respectively
It is overlapped and by the rubber strip from tire radial outside towards tire radial direction inner side paste curl, be consequently formed
The bead part side region of liner.
2. the manufacture method of pneumatic tire according to claim 1, it is characterised in that
In the outer surface of the rigid core for building at least from the Breadth Maximum position on the tire axial of the rigid core for building
The region towards tire radial direction inner side is put, makes the lateral margin of the rubber strip overlapped and by the rubber strip from tire
Radial outside pastes curl towards tire radial direction inner side.
3. the manufacture method of pneumatic tire according to claim 1 or 2, it is characterised in that
The region from the equator of the rigid core for building towards tire radial direction inner side in the outer surface of the rigid core for building,
Make the lateral margin of the rubber strip overlapped and glue the rubber strip from tire radial outside towards tire radial direction inner side
Paste curl.
4. the manufacture method of pneumatic tire according to claim 1 or 2, it is characterised in that
The width of the rubber strip is 5mm~25mm, and the thickness of the rubber strip is 0.3mm~1.5mm.
5. the manufacture method of pneumatic tire according to claim 1 or 2, it is characterised in that
The width of the overlapping overlapping portion formed in the lateral margin of the rubber strip is the width of the rubber strip
Less than 50%.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012214850A JP6196433B2 (en) | 2012-09-27 | 2012-09-27 | Pneumatic tire manufacturing method |
| JP2012-214850 | 2012-09-27 |
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| Publication Number | Publication Date |
|---|---|
| CN103692675A CN103692675A (en) | 2014-04-02 |
| CN103692675B true CN103692675B (en) | 2017-11-17 |
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| CN201310409545.3A Active CN103692675B (en) | 2012-09-27 | 2013-09-10 | The manufacture method of pneumatic tire |
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| JP (1) | JP6196433B2 (en) |
| CN (1) | CN103692675B (en) |
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| JP6445926B2 (en) * | 2015-05-08 | 2018-12-26 | 住友ゴム工業株式会社 | Rubber strip for tire, rubber strip cutting device, and pneumatic tire manufacturing method using the rubber strip |
| US20200198271A1 (en) * | 2018-12-19 | 2020-06-25 | The Goodyear Tire & Rubber Company | Method of making composite innerliner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0928702B1 (en) * | 1997-12-30 | 2003-09-24 | Pirelli Pneumatici Societa' Per Azioni | A tyre for vehicle wheels |
| JP2002347135A (en) * | 2001-05-29 | 2002-12-04 | Bridgestone Corp | Tire manufacturing method |
| JP2003300257A (en) * | 2002-04-09 | 2003-10-21 | Bridgestone Corp | Manufacturing method for radial tire for airplane and radial tire for airplane |
| WO2004022322A1 (en) * | 2002-05-31 | 2004-03-18 | Pirelli Pneumatici S.P.A. | A method and apparatus for manufacturing elastomeric components of a tyre for vehicle wheels |
| MXPA06014049A (en) * | 2004-06-08 | 2007-01-31 | Bridgestone Corp | Method and apparatus for manufacturing tire. |
| JP4546812B2 (en) * | 2004-12-02 | 2010-09-22 | 住友ゴム工業株式会社 | Pneumatic tire |
| JP2006219045A (en) * | 2005-02-14 | 2006-08-24 | Bridgestone Corp | Pneumatic tire, and arrangement structure and method of manufacturing for the same tire |
| JP2006231533A (en) * | 2005-02-22 | 2006-09-07 | Bridgestone Corp | Method and apparatus for manufacturing pneumatic tire |
| JP4904054B2 (en) * | 2005-12-29 | 2012-03-28 | 住友ゴム工業株式会社 | Manufacturing method of rubber member for tire |
| JP5225431B2 (en) * | 2010-12-06 | 2013-07-03 | 住友ゴム工業株式会社 | Strip, method for producing the same, and method for producing a pneumatic tire |
-
2012
- 2012-09-27 JP JP2012214850A patent/JP6196433B2/en active Active
-
2013
- 2013-09-10 CN CN201310409545.3A patent/CN103692675B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP6196433B2 (en) | 2017-09-13 |
| CN103692675A (en) | 2014-04-02 |
| JP2014069334A (en) | 2014-04-21 |
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