CN102774024A - Run-flat tire forming device - Google Patents
Run-flat tire forming device Download PDFInfo
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- CN102774024A CN102774024A CN2012101425777A CN201210142577A CN102774024A CN 102774024 A CN102774024 A CN 102774024A CN 2012101425777 A CN2012101425777 A CN 2012101425777A CN 201210142577 A CN201210142577 A CN 201210142577A CN 102774024 A CN102774024 A CN 102774024A
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Abstract
Provided is a run-flat tire (1) forming device (12) for expanding and deforming a tire body base body (1M) with a pair of bead cores (5), a tire body cord fabric layer (6A) and a rubber reinforcing layer (9). The forming device (12) comprises a pair of bead locking units (32) for clamping the tire body cord fabric layer (6A) through expanding to keep the bead cores (5) from the inner side and moving to an axial direction; a pair of tire side plates (38) capable of extending and shrinking diameters, located in an axial inner side of the bead locking units (32) and capable of supporting a tire side part (3) of the tire body base body (1M) from the inner side. The peripheral surfaces of the tire side plates (38) form a peripheral groove (45) matching with a section shape of the rubber reinforcing layer (9).
Description
Technical field
The present invention relates to the former that a kind of run flat that can boost productivity is used.
Background technology
Proposed to have various run flat, even also can go (following this going only is called " gas leakage continues ") longer distance under the state that the air in tire is for example emitted because of blowing out etc. in the past.As typical run flat, well-known a kind of portion is provided with the roughly reinforced structure in side of the rubber enhancement Layer of crescent shape on the sidewall.
As the operation of making this run flat; At first shown in Figure 12 (a), on cylindric shaping roller d, after the liner rubber i of the sheet of reeling successively, a pair of rubber enhancement Layer g and the flaky carcass casing ply c; Insert bead core b and tyre bead triangle glue e, the carcass matrix a of shaping tubular.
Then, shown in Figure 12 (b), carcass matrix a is moved on the former f, after being turned back from inboard, axial lateral in the both ends of casingply c, the sidewall rubber s of coiling sheet.
Then, carcass matrix a is inflated distortion (shaping) by convention and is ring-type, comprises the tread rings of belt and tread rubber etc. in its outer peripheral face applying, forms crude tyre.Through this crude tyre is carried out vulcanization forming, thereby make run flat.In addition, as relevant document, following document (with reference to following patent documentation 1) is arranged.
Patent documentation 1: TOHKEMY 2010-36420 communique
Invent problem to be solved
Yet; The former f of above-mentioned that kind; (Japanese: サ イ De デ Star Network) outer peripheral face of f1, f1 forms flat condition to its sidewall plate that sidewall rubber s of carcass matrix is supported from the inboard, and this rubber enhancement Layer g has the bigger thickness that the cross section is roughly crescent shape.
Therefore, form bigger concavo-convexly,, exist the problem of productivity ratio deterioration so when reeling this sidewall rubber s, be easy to generate fold and enclose air etc. owing to be wound with the outer surface of the rubber enhancement Layer g of sidewall rubber s.In addition, because this air is enclosed, also exist the bad problem of sulfuration that is called defective that produces.
Summary of the invention
The present invention proposes in view of the actual conditions of above that kind; Purpose is the former that provides a kind of run flat to use; Basically be; Form all grooves of the depression that the cross sectional shape with said rubber enhancement Layer coincide at the outer peripheral face of the sidewall plate that the sidewall portion of carcass matrix is supported from the inboard, can boost productivity.
Be used to solve the means of problem
The invention of the technical scheme 1 among the present invention is the former that a kind of run flat is used; Be used to make carcass matrix dilatancy circlewise; This carcass matrix comprises the pair of bead core and is unvulcanized casingply cylindraceous; And in each sidewall portion of this casingply, be equipped with the continue rubber enhancement Layer of usefulness of gas leakage; The former that this run flat is used comprises: can enlarge the pair of sidewall plate of diameter reduction, this pair of sidewall plate can the sidewall portion to said carcass matrix support from the inboard; And pair of bead lock cell; This pair of bead lock cell is positioned at the axial outside of said sidewall plate; And can clip that said casingply keeps said bead core from the inboard and can be to moving axially, the outer peripheral face of said sidewall plate is formed with all grooves of the depression that the cross sectional shape with said rubber enhancement Layer coincide.
The effect of invention
The former that run flat of the present invention is used is used to make carcass matrix dilatancy circlewise; This carcass matrix comprises the pair of bead core and is unvulcanized casingply cylindraceous, and in each sidewall portion of this casingply, is equipped with the continue rubber enhancement Layer of usefulness of gas leakage.
This former comprises: the pair of bead lock cell, and it can clip through hole enlargement that casingply keeps bead core from the inboard and can be to moving axially; And the pair of sidewall plate that can enlarge diameter reduction, it is positioned at the axial inboard of bead lock unit and can the sidewall portion to the carcass matrix supports from the inboard.
In addition, the outer peripheral face of sidewall plate is formed with all grooves of the depression of coincideing with the cross sectional shape of rubber enhancement Layer.This sidewall plate can absorb the thickness of rubber enhancement Layer, can the outer surface of the carcass matrix that is wound with sidewall rubber be held in flat condition.Thus, when the coiling sidewall rubber, it is bad to prevent to produce coilings such as fold and inclosure air, can boost productivity.In addition, owing to can suppress to enclose air, so it is bad also can to prevent to be called the sulfuration of defective.
Description of drawings
Fig. 1 is the vertical view that expression is incorporated with the manufacturing streamline of former of the present invention.
Fig. 2 (a) is the cutaway view of expression shaping roller, (b) is the cutaway view that the shaping roller of circumferential slot appears in expression.
Fig. 3 (a)～(c) is the cutaway view of the manufacturing process of expression carcass matrix.
Fig. 4 is the cutaway view of the former of this example of expression.
Fig. 5 is the enlarged drawing of Fig. 4.
Fig. 6 be the expression to the sidewall plate that radially enlarges diameter reduction, with the rectangular cutaway view of shaft core direction.
Fig. 7 is sidewall plate and the cutaway view of bead lock ring of expression after hole enlargement radially.
Fig. 8 (a) is the operation with bead core locking, (b) is to making the rubber enhancement Layer be deposited to the cutaway view that the operation in all grooves of sidewall plate describes.
Fig. 9 (a)～(c) is the cutaway view that operation describes of pouring into to tyre bead triangle glue.
Figure 10 is the cutaway view that the operation to the coiling sidewall rubber describes.
Figure 11 is the cutaway view with the run flat of the former manufacturing of this example.
Figure 12 (a) and (b) are cutaway views that the operation that forms in the past carcass matrix and crude tyre is described.
Symbol description
1M carcass matrix
5 bead cores
The 6A casingply
12 formers
32 bead lock unit
38 sidewall plates
45D week groove
The specific embodiment
Below, according to accompanying drawing an example of the present invention is described.
The former that the run flat of this example is used (following only be called sometimes " former ") 12 is used to make the run flat 1 that car is used; Shown in figure 11; This run flat 1 has: carcass 6, and portion 3 extends to the bead core 5 of bead part 4 to this carcass 6 through the sidewall from fetus face 2; Belt 7, this belt 7 are configured in the interior side of the tire radial outside and the fetus face 2 of this carcass 6; Rubber enhancement Layer 9, this rubber enhancement Layer 9 is configured in the inboard of the carcass 6 of each sidewall portion 3; And liner rubber 10, this liner rubber 10 is configured in the inboard of carcass 6 to rubber enhancement Layer 9.
Said carcass 6 by more than a slice, in this example for the casingply 6A of a slice constitutes, this casingply 6A be for example with body cord with respect to the meridian structure of tire equator C with the angle of 70～90 degree.As body cord, for example adopt organic fiber cords such as polyester, nylon, artificial silk, aromatic polyamides, or adopt all-steel cord as required.
In addition, casingply 6A has: main part 6a, and portion 3 extends to the bead core 5 of bead part 4 through the sidewall from fetus face 2 for it; And return portion 6b, it links to each other with this main part 6a and turns back laterally from the tire axial inboard around bead core 5.Between the main part 6a and return portion 6b of casingply 6A, be equipped with the tyre bead triangle glue 8 that extends and constitute by vulcanie to the tire radial outside from bead core 5, suitably reinforced bead portion 4.
In this example; The return portion 6b of said carcass 6; Surpass tyre bead triangle glue 8 ground to radial outside and roll, the outer end 6be of return portion has and is clipped between main part 6a and the belt 7 and the so-called superelevation that terminates is rolled (Japanese: exhumation structure ultra Ha イ タ one Application ア Star プ).Thus, use a slice casingply 6A to come effectively to strengthen sidewall portion 3.
Said belt 7 constitutes like this: to being that the radially inside and outside two belt 7A of tire, 7B are overlapped with the direction that cord crosses one another at least two of will for example arrange with the small angle inclination of 10～35 degree with respect to tire equator C with the bundle cord, this example.The band bundle cord of this example adopts all-steel cord, but also can use elastomeric organic fiber cords such as aromatic polyamides, artificial silk as required.
Said rubber enhancement Layer 9 is that vulcanie about 60～95 degree constitutes by rubber hardness for example, circumferentially is configured in the tire axial outside of tire axial inboard and the liner rubber 10 of carcass 6 continuously along tire.In addition, rubber enhancement Layer 9, the thickness r that the normal direction of the main part 6a that forms at casingply 6A is measured from cross section that central portion to tire inner 9i and outer end 9o radially reduces gradually crescent shape roughly.In addition, " rubber hardness " is the hardness of abideing by JIS-K6253, under the environment of 23 ° of C, being measured by hardometer type A.
Said liner rubber 10, roughly across bead part 4, between 4 be configured to ring-type, form the major part of tyre cavity face, to keep the air of tyre cavity i.In addition, for liner rubber 10, use the bubble-tight rubber compsn that has of that kind such as butyl rubber, halogenated butyl rubber and/or brombutyl for example.
Fig. 1 representes to be incorporated with the manufacturing streamline L of former 12 of the present invention.
This manufacturing streamline L comprises: form the shaping roller 11 of carcass matrix 1M, this carcass matrix 1M is equipped with rubber enhancement Layer 9 in each sidewall portion 3 of casingply 6A; And make this carcass matrix 1M dilatancy former 12 circlewise.
In addition, making streamline L comprises: belt 7A, 7B and tread rubber 2G are reeled and the band bundle cylinder 13 of formation tread rings 2R; This belt 7A, 7B and this tread rubber 2G are supplied to the device 14,15 of band bundle cylinder 13; And the device 16,17 that casingply 6A, rubber enhancement Layer 9 and liner rubber 10 is supplied to shaping roller 11.In addition, between shaping roller 11 and former 12, be equipped with the 1st transport 18 of carrying carcass matrix 1M, and between band bundle cylinder 13 and former 12, be equipped with the 2nd transport 19 of carrying tread rings 2R.
Shown in Fig. 2 (a) and (b), the shaping roller 11 of this example has the cylinder body cylindraceous 21 of coiling casingply 6A and rubber enhancement Layer 9.
Said cylinder body 21 comprises: central segment body 21A, the pair of side parts segment body 21B that is provided in the both sides of the segment body 21A of these central authorities, 21B and the segment body support 21C that these segment bodies is supported from radially inner side.In addition, each sidepiece segment body 21B, 21B are bearing on the outer peripheral face of segment body support 21C slidably.
Shown in Fig. 2 (a), this shaping roller 11 is through making central segment body 21A and sidepiece segment body 21B butt in the axial direction, thereby forms level and smooth outer peripheral face 11S cylindraceous.In addition, shown in Fig. 2 (b), shaping roller 11 separates with sidepiece segment body 21B through making central segment body 21A in the axial direction, is roughly trapezoidal circumferential slot 22 thereby on this outer peripheral face, appear at the continuous cross section that makes progress in tire week.This circumferential slot 22 has and the roughly the same volume of rubber enhancement Layer 9 (shown in Figure 1).
The manufacturing process of existing carcass matrix 1M to the shaping roller 11 that used this example describes.
Shown in Fig. 3 (a), formed at said shaping roller 11 under the state of level and smooth outer peripheral face 11S cylindraceous, liner rubber 10 and rubber enhancement Layer 9 are wound on this outer peripheral face 11S successively.Thus, on shaping roller 11, form the 1st cylindric thing 1N, the 1st cylindric thing 1N comprises liner rubber cylindraceous 10, from this liner rubber 10 to the outstanding rubber enhancement Layer 9 of radial outside.
Shown in Fig. 3 (b), at shaping roller 11 said circumferential slot 22 is appeared under the state of outer peripheral face, be deposited in this circumferential slot 22 while make the rubber enhancement Layer 9 of the 1st cylindric thing 1N carry out plastic deformation.This rubber enhancement Layer 9 because circumferential slot 22 has the volume roughly the same with rubber enhancement Layer 9, so do not make this rubber enhancement Layer 9 sedimentations, can make the outer peripheral face of the 1st cylindric thing 1N be flat condition with having omission.
Shown in Fig. 3 (c), on the smooth outer peripheral face of the 1st cylindric thing 1N, the tyre bead assembly 5C that reels successively, this tyre bead assembly 5C comprise flaky carcass casing ply 6A and bead core 5 and tyre bead triangle glue 8.The rubber enhancement Layer 9 that is shaped thus protrudes roughly the carcass matrix 1M of trapezoidal shape to radially inner side.As shown in Figure 1, this carcass matrix 1M is transported to former 12 by said the 1st transport 18.
So; The shaping roller 11 of this example; Owing to can casingply 6A be wound on the smooth outer peripheral face of the 1st cylindric thing 1N; So the coiling precision of this casingply 6A is improved, the length (following only be called sometimes " body cord path (Japanese: カ one カ ス コ one De パ ス) ") that can make the body cord that extends in the zone of 5,5 of bead cores can increase substantially uniformity in the homogenising that makes progress in tire week.
As shown in Figure 4, the former 12 of this example comprises: comprise the central cylinder mechanism 31 of the pair of sidewall plate 38 that can enlarge diameter reduction, this sidewall plate 38 can support near the sidewall portion 3 of inboard to said carcass matrix 1M; Pair of bead lock cell 32, this pair of bead lock cell 32 are positioned at the axial outside of this sidewall plate 38 and clip casingply 6A and can keep from the inboard to bead core 5; And the tyre bead triangle glue with expandable air bag 61 is poured unit 33 into.
Said central cylinder mechanism 31 has: drum shaft 36; Be configured in the rotary barrel 37 of the radial outside of this drum shaft 36 with one heart; Remain on said sidewall plate 38 on this rotary barrel 37, that constitute by the pair of right and left barrel through the 1st horizontal sliding cylinder 43; To these sidewall plate 38 radius vectors to the inside and outside pilot unit that leads 39; And make sidewall plate 38 enlarge the unit, the 1st scalable footpath 40 of diameter reduction.
In addition, in this example, be connected with the 1st drive motor (diagram is omitted), and be connected with the 2nd drive motor (diagram is omitted) at an end of rotary barrel 37 at an end of drum shaft 36.Thus, drum shaft 36 and this rotary barrel 37 can be distinguished independent rotation.
The both sides of said drum shaft 36 form 36A of right-hand thread portion that is provided with right-handed thread and the 36B of left-hand thread portion that is provided with left hand thread.At each threaded portion 36A, last nut piece 41A, the 41A of having screwed togather of 36B.
Said rotary barrel 37 is formed with along pilot hole 34A, the 34B of the slotted hole shape of shaft core direction extension at each threaded portion 36A of said drum shaft 36, the radial outside of 36B.In this pilot hole 34A, 34B, be provided with moving body 42A, 42B, this moving body 42A, 42B be configured in nut piece 41A, 41B radial outside and can be by this pilot hole 34A, 34B guiding to moving axially.
Shown in the enlarged drawing of Fig. 5, said moving body 42A, 42B are provided with: the fastener 42a of the for example concavity that the action of the shaft core direction of this nut piece 41A, 41B is retrained; And the connector 42b of the for example key that the action of the direction of rotation of nut piece 41A, 41B is retrained etc.
This moving body 42A, 42B, through only making drum shaft 36 rotations under the static state of rotary barrel 37 making, thereby by pilot hole 34A, the 34B guiding of rotary barrel 37, can with nut piece 41A, 41B integratedly along shaft core direction near or move with leaving.In addition, through making drum shaft 36 and rotary barrel 37 with same rotational speed and to equidirectional rotation, thereby moving body 42A, 42B can keep shaft core direction the position and with these rotary barrel 37 rotations.
The said the 1st horizontal sliding cylinder 43 is inserted in sliding freely on the periphery of rotary barrel 37 along shaft core direction, links into an integrated entity with said moving body 42A, 42B.Thus, the 1st horizontal sliding cylinder 43 can along with the shaft core direction of moving body 42A, 42B move and rotation and along shaft core direction near or move with leaving and can be rotated.
Said sidewall plate 38 is configured on the shaft core direction inner end of the 1st horizontal sliding cylinder 43, by constituting along a plurality of segment bodies 45 of circumferentially cutting apart.
As shown in Figure 6, said segment body 45 comprises along the 1st segment body 45A, the 2nd segment body 45B of circumferential alternate configurations.In this example, the circumferential width of the 1st end 45A forms greatlyyer than the 2nd segment body 45B.
In addition; As shown in Figure 5; Last at each segment body 45A, 45B, be provided with from each inner peripheral surface radius vector inwardly the tabular installation sheet 45C that extends of side, from each outer peripheral face to all groove 45D of radially inner side depression and to the spring 45E of the answer usefulness of the inside side's application of force of this installation sheet 45C radius vector.The cross sectional shape of the rubber enhancement Layer 9 of this week groove 45D and carcass matrix 1M coincide and forms and roughly fall trapezoidal shape.
Said pilot unit 39 comprises: be installed in the discoid side plate 39A on the shaft core direction inner end of the said the 1st horizontal sliding cylinder 43; And on the axle in-core side of this side plate 39A to the guide rail 39B of radially radial extension.But the said installation sheet 45C of radius vector to each segment body 45B of inside and outside slip is installed on this guide rail 39B.
Unit, the said the 1st scalable footpath 40 has: cylinder chamber 46, and this cylinder chamber 46 and the 1st horizontal sliding cylinder 43 form with one heart and extend along shaft core direction; The piston 47 of ring-type, this piston 47 can slide inside and outside shaft core direction in this cylinder chamber 46; And connecting rod 48, an end of this connecting rod 48 is journaled on the shaft core direction inner end of piston 47, and the other end is journaled on the installation sheet 45C of segment body 45.These piston 47 utilizations supply to the pressure-air of cylinder chamber 46 and can inside and outside shaft core direction, slide.
As shown in Figure 6, said connecting rod 48 comprises: move radially short the 2nd connecting rod 48B on the 2nd segment body 45B that is installed in that is installed in the 1st connecting rod 48A on the 1st segment body 45A and moves radially distance of distance.In addition, the distance of the length direction of the 1st connecting rod 48A forms shortlyer than the 2nd connecting rod 48B.
Like Fig. 6, shown in Figure 7, so central cylinder mechanism 31 moves through piston 47 side in shaft core direction that makes unit, the 1st scalable footpath 40, thereby can each segment body 45 radius vector moved to foreign side through connecting rod 48 and pilot unit 39, can make sidewall plate 38 hole enlargements.
As shown in Figure 6, in the hole enlargement state Ye of sidewall plate 38, the 2nd segment body 45A, 45B form in fact along a circumferential continuous barrel surface S0 along circumferentially transversely arranged.At this moment, the diameter De of sidewall plate 38 sets greatlyyer than the external diameter of the rubber enhancement Layer 9 of carcass matrix 1M and casingply 6A (shown in Figure 4).
In addition, all groove 45D of each segment body 45, form week upwards with all groove 45D of circumferentially adjacent each segment body 45 continuously, the roughly the same succeeding vat of the rubber enhancement Layer of volume and carcass matrix 1M 9.
In addition, central cylinder mechanism 31 moves to shaft core direction foreign side through making piston 26, thereby can make each segment body 45 radius vector inwardly move and make sidewall plate 38 undergauges in the side.
In the undergauge state Yr of this sidewall plate 38, the 2nd segment body 45B retreats into the radially inner side of the 1st segment body 45A.At this moment, the diameter Dr of sidewall plate 38 sets forr a short time than the internal diameter of the rubber enhancement Layer 9 of carcass matrix 1M and casingply 6A (shown in Figure 4).
Then; As shown in Figure 4, said bead lock unit 32 has: the bead lock ring 52 of the 2nd horizontal sliding cylinder 51 that can move along shaft core direction in the periphery of the said the 1st horizontal sliding cylinder 43 and the enlarged diameter reduction that kept by the 2nd horizontal sliding cylinder 51.
As shown in Figure 5, the said the 2nd horizontal sliding cylinder 51 has: the lateral cylinder chamber 54 that be formed on airtight air chamber 53 between the 2nd horizontal sliding cylinder 51 and the said the 1st horizontal sliding cylinder 43, disposes to the shaft core direction inboard of this air chamber 53 and linking to each other with the shaft core direction inner end of this lateral cylinder chamber 54 and vertical cylinder chamber 55 that radius vector is extended to foreign side with leaving.The 2nd horizontal sliding cylinder 51 can be inboard laterally mobile to shaft core direction through pressure-air being supplied to air chamber 53.
The piston 56 that the portion within it of in said lateral cylinder chamber 54, disposing can slide inside and outside shaft core direction.The inclined plane 56S that has in shaft core direction side and tilt at the shaft core direction inner end of this piston 56 to radially inner side, and form roughly wedge-like.In addition, piston 56 can carry out laterally moving through pressure-air being supplied to lateral cylinder chamber 54 to the shaft core direction inboard.
In said vertical cylinder chamber 55, be provided with the guide part 57 that constitutes by to the gathering sill that radially extends.This guide part 57 can be with bead lock ring 52 radius vectors to inside and outside guiding.
Said bead lock ring 52 is provided with: be formed on inclined plane 52S on its radial inner end, admit bead core 5 inner peripheral surface groove-like the facial 52A of core print seat and to the spring 59 of the answer usefulness of the inside side's application of force of these bead lock ring 52 radius vectors.
The inclined plane 52S of said bead lock ring 52 forms in shaft core direction the side and tilts to radially inner side, disposes contiguously with the inclined plane 56S face of the piston 56 of lateral cylinder chamber 54.
Thus, as shown in Figure 7, inboard when laterally mobile to shaft core direction because pressure-air supplies to the lateral cylinder chamber 54 in when piston 56, bead lock ring 52 is just released radially hole enlargement through each inclined plane 56S, 52S to foreign side by radius vector.In addition, when the pressure-air in the lateral cylinder chamber 54 is discharged from, then utilize the restoring force of spring 59 that bead lock hoop footpath is inwardly pushed the side.At this moment, piston 56 can laterally move to the shaft core direction outside through the inclined plane 52S of bead lock ring 52.
As shown in Figure 4, said triangle glue is poured unit 33 into and is comprised: be installed in the expandable air bag 61 on the said the 2nd horizontal sliding cylinder 51 and make the accessory plate 62 (Fig. 9 (c) shown in) of the air bag 61 of expansion to the inboard distortion of shaft core direction.
One end 61a of said air bag 61 is fixed on the position in the shaft core direction outside of bead lock ring 52, and other end 61b is fixed on the inboard position of shaft core direction of bead lock ring 52.In addition, air bag 61 under the common state of atrophy, folding remaining on the outer peripheral face of the 2nd horizontal sliding cylinder 51.
Shown in Fig. 9 (b), but said accessory plate 62 shaft core direction medial movement be configured in the radial outside of air bag 61.This accessory plate 62 is pushed the air bag 61 that expands, laterally move to the shaft core direction inboard on one side to radially inner side on one side, can pour tyre bead triangle glue 8 effectively into.
Below, the formation method of the crude tyre 1L of the former 12 that has used this example is described.
In this formation method; As shown in Figure 1, comprise at least: utilize said the 1st transport 18 with carcass matrix 1M be configured in operation on the former 12, with the operation of bead core 5 lockings, make the rubber enhancement Layer 9 of carcass matrix 1M be deposited to the operation in all groove 45D of sidewall plate 38, the operation of pouring operation and coiling sidewall rubber 3G into of tyre bead triangle glue 8.
In the operation of the said carcass matrix 1M of configuration, as shown in Figure 4, carcass matrix 1M is kept carrying cylindricly, transfer on the periphery of sidewall plate 38 of former 12.
In operation with said bead core 5 lockings; Shown in Fig. 8 (a); Through making bead lock ring 52 hole enlargements of bead lock unit 32, thus on one side with casingply 6A cramping between tyre bead assembly 5C and bead lock ring 52, on one side fix this tyre bead assembly 5C.Thus, tyre bead assembly 5C remains under the state cylindraceous at casingply 6A and is fixed, thus can prevent the location dislocation between tyre bead assembly 5C and the casingply 6A reliably, can be neatly and evenly and correctly obtain said body cord path.
In the operation in the rubber enhancement Layer 9 that makes said carcass matrix 1M is deposited to all groove 45D of sidewall plate 38, shown in Fig. 8 (b), make sidewall plate 38 hole enlargements of central cylinder mechanism 31, the rubber enhancement Layer 9 of carcass matrix 1M is deposited in all groove 45D.At this moment, be deposited in all groove 45D, also can for example use by pressure roller (not shown) etc. the outer surface of rubber enhancement Layer 9 is pushed to all groove 45D sides in order to make rubber enhancement Layer 9 reliably.
Thus, sidewall plate 38, the thickness by all groove 45D absorb rubber enhancement Layer 9 can remain smooth state with the outer surface of this rubber enhancement Layer 9 and casingply 6A.In addition, be located at radial outside, keep the uniformity that cord is arranged so can give the body cord pulling force owing to the hole enlargement that utilizes sidewall plate 38 is opened casingply 6A.
Pouring in the operation of said tyre bead triangle glue 8; Shown in Fig. 9 (a); Horizontal sliding cylinder 51 through making bead lock unit 32 is inboard laterally mobile to shaft core direction; Thereby bead lock ring 52 is laterally moved, the shaft core direction medial surface that makes the bead core 5 of tyre bead assembly 5C clip casingply 6A and with the shaft core direction lateral surface butt of sidewall plate 38.
In addition, shown in Fig. 9 (b), (c), utilize the expansion of air bag 61 that the two end portions of casingply 6A is turned back, and pour and make tyre bead triangle glue 8 the middle body crimping of itself and casingply 6A into.
In this example, after air bag 61 is expanded, utilize air bag 61 that said accessory plate 62 makes expansion to the inboard distortion of shaft core direction, tyre bead triangle glue 8 is poured and is made into the middle body crimping of itself and casingply 6A.In addition, tyre bead triangle glue 8 after pouring into and the return portion of casingply 6A are for example pushed and are engaged securely through using by pressure roller (not shown).
So, in this example, the two end portions of tyre bead triangle glue 8 and tyre bead layer 6A owing to engage with the flat outer surface of rubber enhancement Layer 9 and casingply 6A, therefore, can suppress to enclose air effectively and produce fold, can boost productivity.In addition, under the engaged state of two end portions of tyre bead triangle glue 8 and casingply 6A, the outer surface of carcass matrix 1M also can be kept smooth state.
In the operation of said sidewall rubber 3G of reeling, shown in figure 10, at the sidewall rubber 3G of the radial outside coiling sheet of rubber enhancement Layer 9 and casingply 6A.The outer surface of the carcass matrix 1M of this sidewall rubber 3G is retained flat condition owing to reel; Therefore; Can prevent that coilings such as such in the past generation fold and inclosure air are bad, can boost productivity, in addition; Owing to also can suppress air and remain between sidewall rubber 3G and the casingply 6A, so it is bad to prevent to be called the sulfuration of defective.
Then, as shown in Figure 1, use the 2nd transport 19 to restraint the operation that cylinder 13 preformed tread rings 2R are transported to the operation of former 12 and casingply 6A is expanded by band.
In the operation that said casingply 6A is expanded, (shown in Fig. 8 (a)) is closer to each other for the bead lock ring 52,52 about making, and at this approaching bead lock ring 52, make casingply 6A expand into ring-type between 52.
Thus, the casingply 6A of ring-type and the tread rings 2R crimping of standby in advance form crude tyre T.This crude tyre T utilizes the undergauge of bead lock ring 52 (shown in Fig. 8 (a)) and takes off from former 12.
More than, describe preferable example of the present invention in detail, but the present invention being not limited to illustrated example, deformable is that various forms are implemented.
Claims (1)
1. former that run flat is used; Be used to make carcass matrix dilatancy circlewise; This carcass matrix comprises the pair of bead core and is unvulcanized casingply cylindraceous; And in each sidewall portion of this casingply, be equipped with the continue rubber enhancement Layer of usefulness of gas leakage, the former that this run flat is used is characterised in that, comprising:
Can enlarge the pair of sidewall plate of diameter reduction, this pair of sidewall plate can the sidewall portion to said carcass matrix support from the inboard; And
The pair of bead lock cell, this pair of bead lock cell is positioned at the axial outside of said sidewall plate, and can clip that said casingply keeps said bead core from the inboard and can be to moving axially,
The outer peripheral face of said sidewall plate is formed with all grooves of the depression of coincideing with the cross sectional shape of said rubber enhancement Layer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011107470A JP5281671B2 (en) | 2011-05-12 | 2011-05-12 | Shaping former for run-flat tires |
| JP2011-107470 | 2011-05-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102774024A true CN102774024A (en) | 2012-11-14 |
Family
ID=47119229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101425777A Pending CN102774024A (en) | 2011-05-12 | 2012-05-09 | Run-flat tire forming device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5281671B2 (en) |
| CN (1) | CN102774024A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104228098A (en) * | 2014-10-09 | 2014-12-24 | 广东日星机械科技有限公司 | Quadratic method run-flat tire one-section forming plying-up drum |
| CN107650402A (en) * | 2017-09-25 | 2018-02-02 | 青岛软控机电工程有限公司 | A kind of run-flat riding radial tire mechanical assembly drum |
| CN107856333A (en) * | 2017-10-30 | 2018-03-30 | 萨驰华辰机械(苏州)有限公司 | Tire assembly drum |
| CN110539511A (en) * | 2014-10-13 | 2019-12-06 | Vmi荷兰公司 | Sealing member for placement around a drum for manufacturing tyres and drum comprising a sealing member |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115179692B (en) * | 2022-08-23 | 2023-10-17 | 青岛轮云设计研究院有限责任公司 | Run-flat tire supporting device, run-flat tire and run-flat tire tread replacing method |
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| JP4173711B2 (en) * | 2002-10-04 | 2008-10-29 | 株式会社ブリヂストン | Method for manufacturing run-flat tires |
| JP4514549B2 (en) * | 2004-08-09 | 2010-07-28 | 東洋ゴム工業株式会社 | Run-flat tire and manufacturing method thereof |
| US7287568B2 (en) * | 2004-12-23 | 2007-10-30 | The Goodyear Tire & Rubber Company | High crown uni-stage tire building drum |
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| US5591288A (en) * | 1993-07-16 | 1997-01-07 | The Goodyear Tire & Rubber Company | Contoured tire building drum and method of building an extended mobility tire |
| CN1827408A (en) * | 2005-03-03 | 2006-09-06 | 住友橡胶工业株式会社 | Runflat tire system and support ring therefor |
| CN101642964A (en) * | 2008-08-04 | 2010-02-10 | 住友橡胶工业株式会社 | Shaping former and device for building green-tire including the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104228098A (en) * | 2014-10-09 | 2014-12-24 | 广东日星机械科技有限公司 | Quadratic method run-flat tire one-section forming plying-up drum |
| CN104228098B (en) * | 2014-10-09 | 2016-08-31 | 广东日星机械科技有限公司 | Twice method Runflat tire first stage building laminating drum |
| CN110539511A (en) * | 2014-10-13 | 2019-12-06 | Vmi荷兰公司 | Sealing member for placement around a drum for manufacturing tyres and drum comprising a sealing member |
| US11040508B2 (en) | 2014-10-13 | 2021-06-22 | Vmi Holland B.V. | Method and drum for manufacturing a tyre, in particular a run-flat tyre |
| CN110539511B (en) * | 2014-10-13 | 2021-09-17 | Vmi荷兰公司 | Sealing member for placement around a drum for manufacturing tyres and drum comprising a sealing member |
| CN107650402A (en) * | 2017-09-25 | 2018-02-02 | 青岛软控机电工程有限公司 | A kind of run-flat riding radial tire mechanical assembly drum |
| CN107856333A (en) * | 2017-10-30 | 2018-03-30 | 萨驰华辰机械(苏州)有限公司 | Tire assembly drum |
| WO2019085886A1 (en) * | 2017-10-30 | 2019-05-09 | 萨驰华辰机械(苏州)有限公司 | Tire building drum |
| CN107856333B (en) * | 2017-10-30 | 2020-04-17 | 萨驰华辰机械(苏州)有限公司 | Tyre building drum |
| KR102135730B1 (en) | 2017-10-30 | 2020-07-20 | 세이프-런 머시너리(쑤저우) 컴퍼니 리미티드 | Tire forming drum |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5281671B2 (en) | 2013-09-04 |
| JP2012236360A (en) | 2012-12-06 |
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