CN103754070A - All-steel radial tyre for tyre bead external reinforcement as well as preparation method thereof - Google Patents
All-steel radial tyre for tyre bead external reinforcement as well as preparation method thereof Download PDFInfo
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- CN103754070A CN103754070A CN201410007671.0A CN201410007671A CN103754070A CN 103754070 A CN103754070 A CN 103754070A CN 201410007671 A CN201410007671 A CN 201410007671A CN 103754070 A CN103754070 A CN 103754070A
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Abstract
The invention relates to an all-steel radial tyre for tyre bead external reinforcement. The tyre comprises a tyre crown, a tyre shoulder, a carcass ply, a belted layer and a tyre bead, wherein the tyre bead comprises wirecord rings, a bead filler and seam allowance protective colloid; the carcass ply de-envelops the steel wire rings; two sides of the carcass ply are respectively provided with a wirecord fabric de-enveloping layer and a wirecord fabric reinforcing layer; the wirecord fabric de-enveloping layer is attached between the carcass ply and an interlining layer; the wirecord fabric reinforcing layer is arranged between the carcass ply at the outer side of the tyre bead and the bead filler. According to the invention, through the improvement of the width of the wirecord reinforcing layer, the de-enveloped height of the outer side is increased greatly, so that the rigidity at the tyre bead is changed stably. Meanwhile, short steel ladles are additionally pasted on the inner side of the carcass ply, the high-load resistance of the tyre bead is intensified effectively; the durability and abrasion resistance of the tyre are improved; meanwhile, the oil consumption can be reduced effectively.
Description
Technical field
The present invention relates to the manufacture field of all-steel radial tyre, relate in particular to a kind of all-steel radial tyre of adjusting tyre bead ladle structure and preparation method thereof.
Background technology
Along with developing rapidly of auto-industry, more and more higher to the requirement of tyre performance, so compared with bias tire, the all-steel radial tyre with good wear-resisting fuel-economizing has obtained the development being exceedingly fast, and become the main product of tire industry.But the performance and used life that affects tire that tyre bead problem can be serious in all-steel radial tyre driving process, thereby the design improvement of bead structure has become one of main construction of domestic and international each giant tyre enterprise.The body cord of radial-ply tyre is radial array, and sidewall is more soft, and in tire running process, tyre bead is stressed very large, less stable, and the ability of tyre bead portion opposing high load capacity is lower.Under high-load condition, often there is the situations such as breach, distortion in tyre bead portion, so in order to guarantee the rigidity of tyre bead, improve the rideability of tire, tyre bead portion must be strengthened, and make have a suitable rigidity excessive between tyre bead and soft sidewall simultaneously, and prevent that stress concentrates, improve the rideability of tire.
China's tyre industry through 20 years, by introducing and digest and assimilate external outstanding technology, has formed huge productive capacity at all steel load radial tire production field since late 1980s.The current tire output of China is large, specification is many, but the homogeneity of all-steel load-bearing radial tire is serious, and the quality of product needs to improve.
Along with the economic development of China, the transportation of China is also developing rapidly.Meanwhile, the development model of highway in China transportation is developed to the heavy-load automobile of high tonnage, high speed by the autotruck of low tonnage, low speed; By the load-carrying of bulk goods formula, to payload of freight container, developed; By high density short range transportation, to the long distance of high density or extra long distance, developed, this must expand the field of application of all steel load radial tire.
Chinese utility model patent (application number: 02234433.0 applying date: 2002-05-10) discloses a kind of reinforcing structure for seam allowance of full steel wire heavy load radial tire, mainly contain steel bead wire, the composite filled adhesive tape of two kinds of obvious elastomeric material compositions of performance difference, radial carcass cord layer by layer, bead wirecord fabric enhancement Layer and fiber/rubber combined enhancement Layer composition, it is characterized in that, from tire section, steel bead wire top is by two kinds of composite filled adhesive tape that the obvious elastomeric material of difference forms in hardness, radial carcass cord layer by layer after steel bead wire bottom reversed its end points near bead apex near the low sizing material of hardness, there is the rim of the mouth wirecord fabric enhancement Layer of one deck through steel bead wire bottom in carcass ply outside layer by layer, in rim of the mouth wirecord fabric enhancement Layer outside, there is fiber/rubber combined enhancement Layer.
Chinese utility model patent (application number: 200820149422.5 applyings date: 2008-09-25) discloses a kind of radial tire deadblow out portion reinforcing structure of all-steel load radial tire, comprise wire bead, compound tyre bead bead apex, in wire bead and composite filled adhesive tape, be provided with casingply outward, casingply is provided with rim of the mouth steel wire infantees outward, casingply anti-package end points, higher than the outer end points of rim of the mouth steel wire infantees, has the wear-resisting glue in one deck rim of the mouth and sidewall rubber outward at rim of the mouth steel wire infantees.The outer end points of casingply anti-package end points and rim of the mouth steel wire infantees top is provided with end-blocking adhesive tape, and end-blocking adhesive tape is by casingply anti-package end points and the completely coated sealing of the outer end points of rim of the mouth steel wire infantees.The rim of the mouth reinforcement mode that the utility model is taked is strengthened emphatically the region of bead most fragile but not the entirety of tyre bead portion is strengthened, thereby the bulk strength of bead area increases appropriateness, has guaranteed the impact in service life of shoulder zone less.
Chinese invention patent (application number: 201310113155.1 applyings date: 2013-04-03) discloses heavier-duty load-carrying whole steel wire radial tyre, carcass outside, place, rim of the mouth is provided with the double-deck heel fabric for carcass anti-package end points is pushed down, steel wire heel fabric and steel wire heel fabric are place, U-shaped encapsulated by structures rim of the mouth carcass, can increase like this rim of the mouth intensity, stop the problem that rim of the mouth exists.And rim of the mouth adopts U-shaped packet form, carcass anti-package end points is pushed down, and is adopted 15 degree angles, simultaneously rim of the mouth steel wire softness, rather than spend as carcass 90, end points is also neat, rigidity is too strong, excessively not smooth, by hard steel wire once excessively to soft sizing material.After like this improving now by firmly to soft excessive gradually, can make rim of the mouth split and the rim of the mouth improvement greatly of reeling off raw silk from cocoons, extended service life, saved resource.
All-steel radial tire quality problems have very most of quality problems for tyre bead portion, and this is also one of great technical barrier of facing of domestic and international tire enterprise, and the present invention is the achievement based on the long-term research of technique of the market demand and enterprise just.
Summary of the invention
The technological deficiency existing in order to solve tyre bead, first object of the present invention is to provide a kind of tyre bead the outer all-steel radial tyre of strengthening, do not affecting in other performance basis of tire, guarantee the compactness that coordinates with wheel rim of tyre bead take into account the dress tire of tire and tire and wheel rim close performance, and the endurance quality of actv. raising tire.Second object of the present invention is to provide a kind of method of preparing above-mentioned all-steel radial tyre.
In order to realize first above-mentioned object, the present invention has adopted following technical scheme:
The outer all-steel radial tyre of strengthening of a kind of tyre bead, this tire comprises crown, tire shoulder, casingply, bracing ply and tyre bead, described tyre bead comprises bead coil, glue is protected in triangle rubber and rim of the mouth, described casingply anti-package bead coil, the both sides of casingply are respectively equipped with wirecord fabric anti-package layer and wirecord fabric enhancement Layer, wirecord fabric anti-package laminating close be arranged on casingply and inside liner between, wirecord fabric anti-package layer is walked around bead coil cross section and is U-shaped, the inner side end points of wirecord fabric anti-package layer and outer point are all higher than the anti-package end points of casingply, described wirecord fabric enhancement Layer be arranged on casingply and triangle rubber outside tyre bead between, the upper extreme point of wirecord fabric enhancement Layer is positioned at the below of the anti-package end points of casingply, lower extreme point ends at bead coil.
As preferably, the differential of the described outer point of wirecord fabric anti-package layer and the anti-package end points of casingply is 10 ~ 20mm, and the differential of the anti-package end points of inner side end points and casingply is 5 ~ 10mm.
As preferably, the wirecord fabric width of described wirecord fabric anti-package layer is 100 ~ 200mm, and thickness is 2.0 ~ 3.0mm.
As preferably, the differential of the outer point of described wirecord fabric enhancement Layer and the anti-package end points of casingply is 5 ~ 20mm.
As preferably, the wirecord fabric width 30 ~ 100mm of described wirecord fabric enhancement Layer, thickness is 2.0 ~ 3.0mm.
As preferably, described wirecord fabric anti-package layer and the steel cord of wirecord fabric enhancement Layer all adopt high tensile steel wire, and the intensity of high tensile steel wire is 2500 ~ 4500MPa.
As preferably, described wirecord fabric anti-package layer is with wirecord fabric enhancement Layer by parallel steel wire and rubber composition, and steel wire and tire circumferentially have 30 ~ 45° angle degree.
In order to realize second above-mentioned object, the present invention has adopted following technical scheme:
A method of preparing above-mentioned all-steel radial tyre, the method comprises the following steps:
1) previously prepared the first wirecord fabric enhancement Layer and the second wirecord fabric enhancement Layer;
2), during green tyres moulding, by mechanical device, the first wirecord fabric enhancement Layer and the second wirecord fabric enhancement Layer are passed on forming machine auxiliary drum;
3) the first wirecord fabric enhancement Layer of fitting on inside liner;
4) symmetrical laminating casingply again;
5) casingply laminating arranges the second wirecord fabric enhancement Layer;
6) carry out all the other forming steps;
7) after moulding, tyre vulcanization is also checked, packed.
The present invention, owing to having adopted above-mentioned technical scheme, by the improvement to steel wire reinforcing layer width, significantly increases the turn up height in outside, makes tyre bead portion stiffness change steady.In casingply inner side, stick on short ladle, actv. has been strengthened the anti-top load performance of tyre bead simultaneously.Endurance quality and the wear resisting property of tire have been improved.Can effectively reduce oil consumption simultaneously.
We by carry out the trial-production of product and lathe is durable and tyre bead durability test cycle after, from test figures, can obviously find out compared with prior art, the present invention has effectively suppressed tyre bead portion radial displacement laterally in the process of moving, has improved the tyre bead endurance quality of tire.Meanwhile, this technical scheme of the present invention is easy to implement in technology, workable, has practicality.The convenient enforcement of going into operation in prior art.
Accompanying drawing explanation
Fig. 1 is the bead structure schematic diagram of all-steel radial tyre of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is made a detailed explanation.
The outer all-steel radial tyre of strengthening of tyre bead, this tire comprises crown, tire shoulder, casingply 1, inside liner 2, bracing ply and tyre bead.As shown in Figure 1, described tyre bead comprises that bead coil 7, triangle rubber 3 and rim of the mouth protect glue 4, described casingply 1 anti-package bead coil 7, and the both sides of casingply 1 are respectively equipped with wirecord fabric anti-package layer 5 and wirecord fabric enhancement Layer 6.5 laminating of described wirecord fabric anti-package layer be arranged on casingply 1 and inside liner 2 between, wirecord fabric anti-package layer 5 is walked around bead coil 7 cross sections and is U-shaped, the inner side end points of wirecord fabric anti-package layer 5 and outer point are all higher than the anti-package end points of casingply 1, the differential of the outer point of wirecord fabric anti-package layer 5 and the anti-package end points of casingply 1 is 10 ~ 20mm, and the differential of the anti-package end points of inner side end points and casingply 1 is 5 ~ 10mm.Described wirecord fabric anti-package layer 5 is comprised of parallel steel wire and rubber, and steel wire and tire circumferentially have 30 ° of angles, and wirecord fabric width is 150mm, and thickness is 2.3mm, and steel cord adopts high tensile steel wire, and the intensity of high tensile steel wire is 2500 ~ 4500MPa.
As shown in Figure 1, the described wirecord fabric enhancement Layer 6 wirecord fabric anti-package layer 5 of fitting arranges, wirecord fabric enhancement Layer 6 is comprised of parallel steel wire and rubber, steel wire and tire circumferentially have 30 ° of angles, the wirecord fabric width 60mm of wirecord fabric enhancement Layer 6, thickness is 2.3mm, and steel cord adopts high tensile steel wire, and the intensity of high tensile steel wire is 3500MPa.Wirecord fabric enhancement Layer 6 arrange casingply 1 and triangle rubber 3 outside tyre bead between, the upper extreme point of wirecord fabric enhancement Layer 6 is positioned at the below of the anti-package end points of casingply 1, lower extreme point ends at bead coil 7, and the differential of the anti-package end points of upper extreme point and casingply 1 is 5 ~ 20mm.
The method of manufacturing the radial-ply tyre of above-mentioned employing the design bead structure, the method comprises the following steps:
1) previously prepared the first wirecord fabric enhancement Layer 5 and the second wirecord fabric enhancement Layer 6;
2), during green tyres moulding, by mechanical device, the first wirecord fabric enhancement Layer 5 and the second wirecord fabric enhancement Layer 6 are passed on forming machine auxiliary drum;
3) the first wirecord fabric enhancement Layer 5 of fitting on inside liner 2;
4) symmetrical laminating carcass ply again;
5) casingply 1 laminating arranges the second wirecord fabric enhancement Layer 6;
6) carry out all the other forming steps;
7) after moulding, tyre vulcanization is also checked, packed.
After testing, the present invention has following effect:
One, this invention can significantly improve the tyre bead endurance quality of tire
Project organization tire of the present invention is compared with original structure tire, and actv. has improved the tyre bead endurance quality of all-steel radial tyre.At standard load 200%, under the condition of standard pressure 80%, the present invention's design has been carried out repeatedly the test of twice load tyre bead endurance quality with former designing tyre.Lathe Data Comparison is as follows:
| The test of tyre bead endurance quality | Contrast for the first time | Contrast for the second time | Contrast for the third time |
| Standard tire | 7h44min | 5h34min | 5h11min |
| Design experiment tire of the present invention | 15h07min | 13h22min | 14h32min |
By the durable lathe correlation data of the tyre bead of 200% load: the twice of the standard tire durable 5 ~ 7h of being of tyre bead that loads; Designing tyre of the present invention is durable is 14 ~ 15h, and tyre bead durability actv. improves 30% ~ 50%.Because the lathe data of tire and product are paid compensation for rate and are had good conformability, thus this programme after operation, the tyre bead of enterprise is paid compensation for and is expected to reduce by 50%, this will bring huge economic benefit for enterprise.
Two, the anti-top load performance of reinforced bead, improves tyre bead safety
The quality accident of automobile 40% comes from tire, and tyre bead odd test is fried is also one of typical defect in home market, and the anti-performance of carrying of tyre bead has been strengthened in this invention design, can effectively reduce the quality accident causing because of tire, ensures user's the security of the lives and property.
Three, improve the refresh rate of tire
Bead distortion are one of main symptom that affect tyre rebuilding recycle, and the outer enhancement Layer ladle structure that the present invention adopts can effectively suppress the torsional deformation of tyre bead under high load capacity, significantly improves rate of reoperative tyre, is conducive to realize recycle, environmental protection.
Claims (8)
1. the outer all-steel radial tyre of strengthening of tyre bead, this tire comprises crown, tire shoulder, casingply (1), inside liner (2), bracing ply and tyre bead, described tyre bead comprises bead coil (7), glue (4) is protected in triangle rubber (3) and rim of the mouth, described casingply (1) anti-package bead coil (7), it is characterized in that: the both sides of casingply (1) are respectively equipped with wirecord fabric anti-package layer (5) and wirecord fabric enhancement Layer (6), wirecord fabric anti-package layer (5) laminating be arranged on casingply (1) and inside liner (2) between, wirecord fabric anti-package layer (5) is walked around bead coil (7) cross section and is U-shaped, the inner side end points of wirecord fabric anti-package layer (5) and outer point are all higher than the anti-package end points of casingply (1), described wirecord fabric enhancement Layer (6) be arranged on casingply (1) and triangle rubber (3) outside tyre bead between, the upper extreme point of wirecord fabric enhancement Layer (6) is positioned at the below of the anti-package end points of casingply (1), and lower extreme point ends at bead coil (7).
2. the outer all-steel radial tyre of strengthening of a kind of tyre bead according to claim 1, it is characterized in that: the differential 10 ~ 20mm of being of the anti-package end points of the outer point of wirecord fabric anti-package layer (5) and casingply (1), the differential of the anti-package end points of inner side end points and casingply (1) is 5 ~ 10mm.
3. the outer all-steel radial tyre of strengthening of a kind of tyre bead according to claim 1, is characterized in that: the wirecord fabric width of wirecord fabric anti-package layer (5) is 100 ~ 200mm,, thickness is 2.0 ~ 3.0mm.
4. the outer all-steel radial tyre of strengthening of a kind of tyre bead according to claim 1, is characterized in that: the differential 5 ~ 20mm of being of the anti-package end points of the outer point of wirecord fabric enhancement Layer (6) and casingply (1).
5. the outer all-steel radial tyre of strengthening of a kind of tyre bead according to claim 1, is characterized in that: the wirecord fabric width 30 ~ 100mm of wirecord fabric enhancement Layer (6), thickness is 2.0 ~ 3.0mm.
6. the outer all-steel radial tyre of strengthening of a kind of tyre bead according to claim 1, it is characterized in that: the steel cord of wirecord fabric anti-package layer (5) and wirecord fabric enhancement Layer (6) adopts high tensile steel wire, and the intensity of high tensile steel wire is 2500 ~ 4500MPa.
7. the outer all-steel radial tyre of strengthening of a kind of tyre bead according to claim 1, it is characterized in that: wirecord fabric anti-package layer (5) is with wirecord fabric enhancement Layer (6) by parallel steel wire and rubber composition, and steel wire and tire circumferentially have 30 ~ 45° angle degree.
8. a method of preparing the all-steel radial tyre of strengthening in a kind of tyre bead described in claim 1 ~ 7 any one claim, is characterized in that the method comprises the following steps:
1) previously prepared the first wirecord fabric enhancement Layer (5) and the second wirecord fabric enhancement Layer (6);
2), during green tyres moulding, by mechanical device, the first wirecord fabric enhancement Layer (5) and the second wirecord fabric enhancement Layer (6) are passed on forming machine auxiliary drum;
3) at the upper laminating of inside liner (2) the first wirecord fabric enhancement Layer (5);
4) symmetrical laminating casingply (1) again;
5) casingply (1) laminating arranges the second wirecord fabric enhancement Layer (6);
6) carry out all the other forming steps;
7) after moulding, tyre vulcanization is also checked, packed.
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| CN201410007671.0A CN103754070B (en) | 2014-01-07 | 2014-01-07 | All-steel radial tyre that a kind of tyre bead is strengthened outward and preparation method thereof |
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| CN201410007671.0A CN103754070B (en) | 2014-01-07 | 2014-01-07 | All-steel radial tyre that a kind of tyre bead is strengthened outward and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104527333A (en) * | 2015-01-22 | 2015-04-22 | 哈尔滨工业大学 | All-steel wire tubeless radial tire with external steel wire chafer end |
| CN105196584A (en) * | 2015-08-25 | 2015-12-30 | 江苏通用科技股份有限公司 | Method for preventing connector of tire blank inner liner from cracking |
| CN107627790A (en) * | 2017-10-16 | 2018-01-26 | 中策橡胶集团有限公司 | A kind of all-steel radial tyre for intersecting built-in steel wire reinforcement tyre bead |
| CN108638757A (en) * | 2018-04-16 | 2018-10-12 | 中策橡胶集团有限公司 | A kind of load-carrying Pneumatic belt tire with double steel wire supporting material bead structures |
| CN110281704A (en) * | 2019-06-26 | 2019-09-27 | 青岛双星轮胎工业有限公司 | Steel wire carcass ST tire and its manufacturing process |
| CN112848808A (en) * | 2021-01-29 | 2021-05-28 | 山东玲珑轮胎股份有限公司 | Tyre for vehicle |
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| CN103317973A (en) * | 2013-07-09 | 2013-09-25 | 广州市华南橡胶轮胎有限公司 | Tire with improved tire bead structure and manufacturing method thereof |
| CN203681156U (en) * | 2014-01-07 | 2014-07-02 | 中策橡胶集团有限公司 | All-steel radial tire with reinforced outside of tire bead |
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| GB2127361B (en) * | 1982-09-21 | 1986-06-04 | Continental Gummi Werke Ag | Pneumatic vehicle tyre |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104527333A (en) * | 2015-01-22 | 2015-04-22 | 哈尔滨工业大学 | All-steel wire tubeless radial tire with external steel wire chafer end |
| CN105196584A (en) * | 2015-08-25 | 2015-12-30 | 江苏通用科技股份有限公司 | Method for preventing connector of tire blank inner liner from cracking |
| CN105196584B (en) * | 2015-08-25 | 2017-05-17 | 江苏通用科技股份有限公司 | Method for preventing connector of tire blank inner liner from cracking |
| CN107627790A (en) * | 2017-10-16 | 2018-01-26 | 中策橡胶集团有限公司 | A kind of all-steel radial tyre for intersecting built-in steel wire reinforcement tyre bead |
| CN107627790B (en) * | 2017-10-16 | 2023-08-18 | 中策橡胶集团股份有限公司 | All-steel radial tire with crossed built-in steel wire reinforced tire bead |
| CN108638757A (en) * | 2018-04-16 | 2018-10-12 | 中策橡胶集团有限公司 | A kind of load-carrying Pneumatic belt tire with double steel wire supporting material bead structures |
| CN108638757B (en) * | 2018-04-16 | 2024-02-13 | 中策橡胶集团股份有限公司 | Pneumatic radial tire with double steel wire reinforced material bead structure for load carrying |
| CN110281704A (en) * | 2019-06-26 | 2019-09-27 | 青岛双星轮胎工业有限公司 | Steel wire carcass ST tire and its manufacturing process |
| CN112848808A (en) * | 2021-01-29 | 2021-05-28 | 山东玲珑轮胎股份有限公司 | Tyre for vehicle |
| CN112848808B (en) * | 2021-01-29 | 2023-09-29 | 山东玲珑轮胎股份有限公司 | Tire with a tire cover |
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| CN103754070B (en) | 2016-03-23 |
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Address after: 310018 No. 1, No. 1 Street, Qiantang District, Hangzhou, Zhejiang Patentee after: Zhongce Rubber Group Co.,Ltd. Address before: 310018 No.2, 10th Street, Hangzhou Economic and Technological Development Zone, Zhejiang Province Patentee before: ZHONGCE RUBBER GROUP Co.,Ltd. |
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