CN103754071B - All-steel radial tyre strengthened in a kind of tyre bead and preparation method thereof - Google Patents
All-steel radial tyre strengthened in a kind of tyre bead and preparation method thereof Download PDFInfo
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- CN103754071B CN103754071B CN201410007737.6A CN201410007737A CN103754071B CN 103754071 B CN103754071 B CN 103754071B CN 201410007737 A CN201410007737 A CN 201410007737A CN 103754071 B CN103754071 B CN 103754071B
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Abstract
The present invention relates to the all-steel radial tyre strengthened in a kind of tyre bead, this tire comprises crown, tire shoulder, casingply, inside liner, bracing ply and tyre bead, described tyre bead comprises bead coil, triangle rubber and rim of the mouth and protects glue, casingply anti-package bead coil, the both sides of casingply are respectively equipped with wirecord fabric anti-package layer and wirecord fabric enhancement Layer, and wirecord fabric anti-package laminating closes and is arranged between casingply and inside liner; Described wirecord fabric enhancement Layer to arrange inside tyre bead between casingply and triangle rubber.The present invention can increase bead durability energy by actv..Meanwhile, technical scheme of the present invention is simple and reliable and easy to implement in technology, can directly put into operation.Application prospect of the present invention is that actv. improves the bead durability energy of tire.The anti-top load performance of reinforced bead.Improve tire wear performance.
Description
Technical field
The present invention relates to the manufacture field of all-steel radial tyre, particularly relate to and a kind ofly adjust all-steel radial tyre of 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 obtains the development be exceedingly fast, and has become the main product of tire industry.But the performance and used life affecting tire that tyre bead problem can be serious in all-steel radial tyre driving process, thus 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 radially arranges, and sidewall is then 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 situation such as breach, distortion in tyre bead portion, so the rigidity in order to ensure tyre bead, improve the rideability of tire, tyre bead portion must be strengthened, and make to have between tyre bead and the sidewall of softness a suitable rigidity excessive simultaneously, prevent that stress is concentrated, improve the rideability of tire.
China's tyre industry through 20 years, by introducing and digest and assimilate external outstanding technology, has defined 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 transport is developed to high tonnage, heavy-load automobile at a high speed by the autotruck of low tonnage, low speed; Developed to payload of freight container by the load-carrying of bulk goods formula; Transported by high density short range and develop to the long distance of high density or extra long distance, 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 performance difference obvious elastomeric material compositions, 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, near the radial carcass cord sizing material that its end points hardness in bead apex is low after steel bead wire bottom reversed layer by layer, there is the rim of the mouth wirecord fabric enhancement Layer of one deck bottom steel bead wire in carcass ply outside layer by layer, fiber/rubber combined enhancement Layer is had outside the wirecord fabric enhancement Layer of rim of the mouth.
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, composite bead bead apex, casingply is provided with outside wire bead and composite filled adhesive tape, rim of the mouth steel wire infantees is provided with outside casingply, 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 outside the steel wire infantees of rim of the mouth.Be provided with end-blocking adhesive tape above casingply anti-package end points and the outer end points of rim of the mouth steel wire infantees, end-blocking adhesive tape is by complete for end points outside casingply anti-package end points and rim of the mouth steel wire infantees coated closed.The rim of the mouth that the utility model is taked is strengthened mode and is strengthened the region of bead most fragile emphatically but not strengthen the entirety of tyre bead portion, and the bulk strength of bead area increases appropriateness thus ensure that 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, rim of the mouth place is provided with the double-deck heel fabric for being pushed down by carcass anti-package end points, steel wire heel fabric and steel wire heel fabric U-shaped encapsulated by structures rim of the mouth place carcass, rim of the mouth intensity can be increased like this, stop rim of the mouth Problems existing.And rim of the mouth adopts U-shaped packet form, carcass anti-package end points is pushed down, and adopt 15 degree of angles, rim of the mouth steel wire is soft simultaneously, instead of as carcass 90 degree, end points is also neat, and 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 gradually excessively, rim of the mouth can be made to split to reel off raw silk from cocoons with rim of the mouth greatly to improve, extend 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 significant technology issues of facing of domestic and international tire enterprise, and the present invention is just based on the achievement of the market demand and enterprise's long-term technology tackling key problem.
Summary of the invention
In order to solve the technological deficiency that tyre bead exists, first object of the present invention to provide the all-steel radial tyre strengthened in a kind of tyre bead, this tire is on the basis not affecting other performance of tire, significantly strengthen the resistance to top load performance of tyre bead portion and the endurance quality of tire, do not affect its renovation performance, and it is more reasonable that tyre bead and tire shoulder are mated simultaneously.Second object of the present invention is to provide a kind of method preparing above-mentioned all-steel radial tyre.
In order to realize first above-mentioned object, present invention employs following technical scheme:
The all-steel radial tyre strengthened in a kind of tyre bead, this tire comprises crown, tire shoulder, casingply, inside liner, 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 closes and is arranged between casingply and inside liner, it is U-shaped that wirecord fabric anti-package layer walks around bead coil cross section, 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 arranges inside tyre bead between casingply and triangle rubber, and the upper extreme point of wirecord fabric enhancement Layer is positioned at the below of the inner side end points of wirecord fabric anti-package layer, and lower extreme point ends at bead coil.
As preferably, the described outer point of wirecord fabric anti-package layer and the differential of the anti-package end points of casingply are 5 ~ 20mm.
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 outer point of described wirecord fabric enhancement Layer and the differential of the anti-package end points of casingply are 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 and wirecord fabric enhancement Layer are by parallel steel wire and rubber composition, and steel wire and tire circumference have 30 ~ 45° angle degree.
In order to realize second above-mentioned object, present invention employs following technical scheme:
Prepare a method for above-mentioned all-steel radial tyre, the method comprises the following steps:
1) previously prepared first wirecord fabric enhancement Layer and the second wirecord fabric enhancement Layer;
2), when green tyres is shaping, by mechanical device, the first wirecord fabric enhancement Layer and the second wirecord fabric enhancement Layer are passed on forming machine auxiliary drum;
3) to fit on inside liner the first wirecord fabric enhancement Layer;
4) symmetrical laminating casingply again;
5) casingply laminating arranges the second wirecord fabric enhancement Layer;
6) all the other forming steps are carried out;
7) after shaping, tyre vulcanization is checked, packed.
The present invention, owing to have employed above-mentioned technical scheme, by trial-production and the lathe durability test cycle of this product, achieves breakthrough results, and compared with prior art, the present invention can increase bead durability energy by actv..Meanwhile, technical scheme of the present invention is simple and reliable and easy to implement in technology, can directly put into operation.Application prospect of the present invention is that actv. improves the bead durability energy of tire.The anti-top load performance of reinforced bead.Improve tire wear performance.Can actv. reduce the bead defect of my company's tire product pay compensation for rate, contribute to promoting tire product quality, increase economic efficiency.
Accompanying drawing explanation
Fig. 1 is the bead structure schematic diagram of all-steel radial tyre of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is made a detailed explanation.
The all-steel radial tyre strengthened in 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 bead coil 7, triangle rubber 3 and rim of the mouth and protects glue 4, and described casingply 1 anti-package bead coil 7, the both sides of casingply 1 are respectively equipped with wirecord fabric anti-package layer 5 and wirecord fabric enhancement Layer 6.The laminating of wirecord fabric anti-package layer 5 is arranged between casingply 1 and inside liner 2, it is U-shaped that wirecord fabric anti-package layer 5 walks around bead coil 7 cross section, 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 outer point of wirecord fabric anti-package layer 5 and the differential of the anti-package end points of casingply 1 are 10 ~ 15mm, and the differential of anti-package end points of inner side end points and casingply 1 is 5 ~ 10mm.Described wirecord fabric anti-package layer 5 is made up of parallel steel wire and rubber, and steel wire and tire circumference 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 3500MPa.
As shown in Figure 1, described wirecord fabric enhancement Layer 6 wirecord fabric anti-package layer 5 of fitting is arranged, wirecord fabric enhancement Layer 6 is made up of parallel steel wire and rubber, steel wire and tire circumference 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 to arrange inside tyre bead between casingply 1 and triangle rubber 3, the upper extreme point of wirecord fabric enhancement Layer 6 is positioned at the below of the inner side end points of wirecord fabric anti-package layer 5, lower extreme point ends at bead coil 7, and the differential of anti-package end points of upper extreme point and casingply 1 is 5 ~ 10mm.
Manufacture the method for the radial-ply tyre of above-mentioned employing the design bead structure, the method comprises the following steps:
1) previously prepared first wirecord fabric enhancement Layer 5 and the second wirecord fabric enhancement Layer 6;
2), when green tyres is shaping, 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) to fit on inside liner 2 first wirecord fabric enhancement Layer 5;
4) symmetrical laminating carcass ply again;
5) casingply 1 laminating arranges the second wirecord fabric enhancement Layer 6;
6) all the other forming steps are carried out;
7) after shaping, tyre vulcanization is checked, packed.
After testing, the present invention has following effect:
One, this invention can significantly improve the bead durability energy of tire
Project organization tire of the present invention is compared with original structure tire, and actv. improves the endurance quality of bead.At standard load 200%, carrying out repeatedly twice load bead durability under the condition of standard pressure 80% can test with former designing tyre.Machine tool data contrast is as follows:
| Bead durability can be tested | First time contrast | Second time contrast | Third time contrast |
| Standard tire | 5h44min | 6h34min | 6h11min |
| Design experiment tire of the present invention | 18h07min | 14h12min | 15h12min |
The lathe correlation data durable by tyre bead can be found out: the twice load tyre bead of standard tire is durable is 5 ~ 7h; Designing tyre of the present invention is durable is 14 ~ 18h, and bead durability actv. improves more than 50%.Statistical analysis shows that machine tool data and product are paid compensation for and had good conformability, and this programme is after operation, and the tyre bead of enterprise is paid compensation for and is expected to reduce by 50%, and this brings huge economic benefit by for enterprise.
Two, the anti-top load performance of reinforced bead, improves tyre bead safety
The quality accident 40% of automobile comes from tire, and tyre bead odd test is fried is also one of typical defect in home market, and this invention design strengthens the anti-of tyre bead and carries performance, effectively can reduce the quality accident because tire causes, and ensures the security of the lives and property of user.
Three, the refresh rate of tire is improved
Bead distortion are one of main symptom affecting tyre rebuilding recycle, and the outer enhancement Layer ladle structure that the present invention adopts effectively can suppress the torsional deformation of tyre bead under high load capacity, significantly improves rate of reoperative tyre, is conducive to realizing recycle, environmental protection.
Claims (6)
1. the all-steel radial tyre strengthened in a 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 is arranged between casingply (1) and inside liner (2), it is U-shaped that wirecord fabric anti-package layer (5) walks around bead coil (7) cross section, 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) is arranged between casingply inside tyre bead (1) and triangle rubber (3), the upper extreme point of wirecord fabric enhancement Layer (6) is positioned at the below of the inner side end points of wirecord fabric anti-package layer (5), and lower extreme point ends at bead coil (7), the outer point of described wirecord fabric anti-package layer (5) and the differential of the anti-package end points of casingply (1) are 5 ~ 20mm, the outer point of wirecord fabric enhancement Layer (6) and the differential of the anti-package end points of casingply (1) are 5 ~ 20mm.
2. the all-steel radial tyre strengthened in 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, and thickness is 2.0 ~ 3.0mm.
3. the all-steel radial tyre strengthened in 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.
4. the all-steel radial tyre strengthened in 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) all adopts high tensile steel wire, the intensity of high tensile steel wire is 2500 ~ 4500MPa.
5. the all-steel radial tyre strengthened in a kind of tyre bead according to claim 1, it is characterized in that: wirecord fabric anti-package layer (5) and wirecord fabric enhancement Layer (6) are by parallel steel wire and rubber composition, and steel wire and tire circumference have 30 ~ 45° angle degree.
6. prepare a method for the all-steel radial tyre strengthened in a kind of tyre bead described in claim 1 ~ 5 any one claim, it is characterized in that the method comprises the following steps:
1) previously prepared first wirecord fabric enhancement Layer (5) and the second wirecord fabric enhancement Layer (6);
2), when green tyres is shaping, 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 upper laminating first wirecord fabric enhancement Layer (5) of inside liner (2);
4) symmetrical laminating casingply (1) again;
5) casingply (1) laminating arranges the second wirecord fabric enhancement Layer (6);
6) all the other forming steps are carried out; 7) after shaping, tyre vulcanization is checked, packed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410007737.6A CN103754071B (en) | 2014-01-08 | 2014-01-08 | All-steel radial tyre strengthened in a kind of tyre bead and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410007737.6A CN103754071B (en) | 2014-01-08 | 2014-01-08 | All-steel radial tyre strengthened in a kind of tyre bead and preparation method thereof |
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| CN103754071A CN103754071A (en) | 2014-04-30 |
| CN103754071B true CN103754071B (en) | 2016-03-23 |
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| CN201410007737.6A Active CN103754071B (en) | 2014-01-08 | 2014-01-08 | All-steel radial tyre strengthened in a kind of tyre bead and preparation method thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106956552A (en) * | 2017-05-03 | 2017-07-18 | 山东元丰橡胶科技有限公司 | Prevent the tire of rim of the mouth implosion |
| CN107685602B (en) * | 2017-09-14 | 2024-02-09 | 中策橡胶集团股份有限公司 | All-steel radial tire with high tire bead durability |
| 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 |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5695709A (en) * | 1979-12-28 | 1981-08-03 | Bridgestone Corp | Pneumatic tire for high speed traveling |
| EP1346853A1 (en) * | 1997-06-12 | 2003-09-24 | Bridgestone Corporation | Heavy duty pneumatic radial tires |
| KR20110078613A (en) * | 2009-12-31 | 2011-07-07 | 한국타이어 주식회사 | Tire for heavy duty with bead part reinforcement |
| CN203681166U (en) * | 2014-01-08 | 2014-07-02 | 中策橡胶集团有限公司 | All-steel radial tyre with internally reinforced tyre bead |
-
2014
- 2014-01-08 CN CN201410007737.6A patent/CN103754071B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5695709A (en) * | 1979-12-28 | 1981-08-03 | Bridgestone Corp | Pneumatic tire for high speed traveling |
| EP1346853A1 (en) * | 1997-06-12 | 2003-09-24 | Bridgestone Corporation | Heavy duty pneumatic radial tires |
| KR20110078613A (en) * | 2009-12-31 | 2011-07-07 | 한국타이어 주식회사 | Tire for heavy duty with bead part reinforcement |
| CN203681166U (en) * | 2014-01-08 | 2014-07-02 | 中策橡胶集团有限公司 | All-steel radial tyre with internally reinforced tyre bead |
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| CN103754071A (en) | 2014-04-30 |
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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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