CN102555692A - Water-drop type carbon fiber tyre bead core used for tyre and forming method thereof - Google Patents
Water-drop type carbon fiber tyre bead core used for tyre and forming method thereof Download PDFInfo
- Publication number
- CN102555692A CN102555692A CN201210031023XA CN201210031023A CN102555692A CN 102555692 A CN102555692 A CN 102555692A CN 201210031023X A CN201210031023X A CN 201210031023XA CN 201210031023 A CN201210031023 A CN 201210031023A CN 102555692 A CN102555692 A CN 102555692A
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- CN
- China
- Prior art keywords
- bead core
- carbon fiber
- tyre
- droplet
- tyre bead
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C15/00—Tyre beads, e.g. ply turn-up or overlap
- B60C15/04—Bead cores
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/48—Bead-rings or bead-cores; Treatment thereof prior to building the tyre
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/48—Bead-rings or bead-cores; Treatment thereof prior to building the tyre
- B29D2030/487—Forming devices for manufacturing the beads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C15/00—Tyre beads, e.g. ply turn-up or overlap
- B60C15/04—Bead cores
- B60C2015/042—Bead cores characterised by the material of the core, e.g. alloy
Abstract
The invention discloses a water-drop type carbon fiber tyre bead core used for a tyre and a forming method of the tyre bead core. The section of the tyre bead core is in a water-drop shape, and the tyre bead core is made of a composite material of carbon fiber bundles coated by a binder. The forming method comprises the following steps: firstly winding the tail end of a continuous carbon fiber composite material tyre bead core strip in an internal hollow cavity of a rotation mold through an opening of the upper part of the mold; and afterwards rotating the rotation mold at a certain speed around a center rotation shaft and continuously delivering the composite material tyre bead core trip of the carbon fiber bundles coated by the binder at the same time so that continuous winding is continuously generated in the hollow cavity of the mold until the carbon fiber tyre bead core having the same water-drop shape with the section of the hollow cavity of the mold is formed. With the adoption of the water-drop type carbon fiber tyre bead core, a tyre bead can be tightly fixed in a wheel rim so that an accident of the wheel rim taking off from the tyre is avoided or the tyre is prevented from slippage or rotation relative to the wheel rim. In addition, the sinking amount of the tyre with the structure can be reduced, and the riding comfortableness and safety are increased.
Description
Technical field
The present invention relates to a kind of tire bead, particularly relate to a kind of bead core and forming method thereof of droplet-shaped carbon fiber composite material, this invention is particularly useful for aircraft tyre.
Background technology
Tire bead is meant that at least one carcass ply ends folds back and forms the zone of anti-package body piles after twining annular reinforcement, and the chief component of the annular reinforcement that bead core promptly refers to casingply and twined is mainly to take advantage of one of power parts.At the bead core radial outside, generally to insert tyre bead triangle glue or other fillers, it is seen from section form and is general triangular shaped, retrains fixedly bead core with this.
Tire bead plays an important role in the rotation process of tire; Weight bead core particularly; It not only is anchored on tire carcass on the tire bead; And play the effect that tire is fastened to wheel rim, thus guarantee the sealing effectiveness between tubeless tires and the wheel rim, guarantee the pressure maintaining performance and the endurance quality of tubeless tires.
The bead core material often is steel wire or strand wire at present, and the utilization new material replaces steel wire in the patent of having announced but also have.
U.S. Pat 4823857 proposes a kind of bead structure, and it is to be embedded into by fibrage to form annular additional strengthening in the polymeric matrix, between two-layer composite material, also accompanies the thin layer composite material that does not depend on the thick-layer composite material in the lump.
U.S. Pat 4320791 has been announced a kind of tire, and its tyre bead portion includes high modulus fibre and polymeric matrix, utilizes high modulus organic fibre or inorganic fibre to form elongated bead elements, and this bead elements has high strength-to-density ratio and specific modulus.
Japanese Patent JP6286426 discloses a kind of tire bead, and its bead core is processed after being twined through annular by the non-metallic fibers material, with this reinforced bead position structure.
CN101193763 has announced a kind of air-inflation tyre with composite bead core, and the bead core of this type of tire comprises the elongated member of at least one metal filament composition and second elongated member of at least one carbon fiber composition.
Aircraft tyre belongs to one of important spare part of aircraft; Since aircraft land with take-off process in tire need bear at a high speed, top load, high in pressure; So generally harsh to the performance requriements of aircraft tyre, particularly tyre bead portion will bear higher load.
Aircraft is landing or is taking off moment; The speed of tire generally can reach 360km/h; Its internal inflation pressure reaches about 1.3MPa, and the main tire bearing load that has so also need quicken or moderating process under the extreme condition up to 15000kg; So for aircraft tyre; It is considerable that tyre bead portion tightly is fixed on the aircraft wheel rim, for prevent tyre bead portion take off or the landing process in come off or produce slide relative from wheel rim with the wheel rim position, just need make bead core have bigger tensile strength and higher modulus; Tyre bead can produce less deformation when receiving the impact load of inflation pressure and aircraft like this, can prevent effectively that tyre bead portion from produce sliding with respect to wheel rim or come off.
All from material, tire bead is improved in the above-mentioned patent; The utilization composite material is made parts such as bead core; Iff is used bead core instead in the composite material of high-modulus; In the tyre bead course of processing, be difficult to being the bead core of matrix with the composite material and being that the triangular rubber core of matrix merges to together with rubber; Not only in making the course of processing, certain degree of difficulty is arranged, and cause the slide relative between bead core and the triangular rubber core easily, can not guarantee to transmit to tire the good result of power and moment of torsion from wheel rim.
In addition; The main effect of triangular rubber core or tyre bead obturator is that bead core is fixed in tyre bead inside; Prevent that it from radial direction slip etc. taking place; But tyre bead is after bearing bigger pressure load in the above-mentioned data, and can't guarantee that the bead core of being processed by composite material can not produce move radially under the fixation of body of rubber Charge, and possibly cause thus that a series of tires break away from faults such as wheel rims.
Summary of the invention
The object of the present invention is to provide a kind of section to be droplet-shaped carbon fiber bead core arrangements and forming method thereof; The double action of bead core and triangular rubber core before this kind bead core arrangements directly has need not to recharge triangular rubber core or the tyre bead filler fixes bead core.
According to the present invention; A kind of droplet-shaped carbon fiber bead core that is suitable for the strong tire of load-carrying capacity (for example aircraft tyre) is provided; Bead core is a circular ring; The bead core section form be an end be circular arc, the other end by arc transition to pointed droplet-shaped, institute's apply materials is the composite material that is formed by the carbon fiber bundle that adhesive agent (the for example epoxy resin of modification) coats, its intensity is about 1000MPa; Modulus is about 100GPa, and it can have the working condition that enough mechanical characteristicss satisfy the complicated harshness of aircraft tyre like this.
To achieve these goals, the invention provides a kind of forming method that is used for the droplet-shaped carbon fiber bead core of tire, this method may further comprise the steps:
At first use a mould that can rotate, the mould inside cavity is that section is described droplet-shaped bead core cross section structure during the mould mold closing; One end of the continuous carbon fiber composite material bead core bar opening through mould top is wrapped in the rotary die internal cavities;
Rotary die rotates around centre rotational axis with certain speed afterwards; Constantly carry the composite material bead core bar of the continuous carbon fiber bundle that is coated with adhesive agent simultaneously; Make constantly to produce continuously in its mould cavity and twine, be all drop-shaped carbon fiber bead core until forming with the mould cavity section;
After forming a complete droplet-shaped carbon fiber bead core, open mould, take out droplet-shaped carbon fiber bead core, use it in the manufacturing procedure of preparing subsequent tyre.
The present invention is a kind of, and to be used for the droplet-shaped carbon fiber bead core of tire not only simple in manufacturing process technology; Easy operating, and saved rubber raw materials, because whole droplet-shaped bead core arrangements all adopts the carbon fiber composite material that is coated by adhesive agent (the for example epoxy resin of modification); It has stronger stretch-proof ability and the modulus of Geng Gao; Can tire bead tightly be fixed in the wheel rim like this, avoid taking place tire as far as possible and take off the rim accident or prevent that tire from producing slippage or the rotation with respect to wheel rim, in addition its another advantage be since the radical length of droplet-shaped carbon fiber bead core arrangements greater than the wire bead cored structure of ordinary construction; Make tire in that deformation is less in the radial direction; Perhaps take off moment in aircraft landing like this, the deflection of tire can reduce, and increases traveling comfort and the safety taken.
From down in the face of preferably but the description of not exclusive embodiment, can further understand advantage of the present invention and characteristic better according to the present invention, the accompanying drawing that this description will provide with reference to non-limiting example, specification sheets of the present invention also should be with reference to advantages.
Description of drawings
Fig. 1 is the cross-sectional view strength of the tire of a kind of droplet-shaped carbon fiber bead core that is used for tire of the present invention;
Fig. 2 shows the enlarged drawing at a kind of tire bead position of the droplet-shaped carbon fiber bead core that is used for tire according to the present invention;
Fig. 3 is the shaping schematic view of a kind of forming method of the droplet-shaped carbon fiber bead core that is used for tire according to the present invention;
Fig. 4 removes the back scheme drawing for the droplet-shaped mold halves one of a kind of forming mould of forming method of the droplet-shaped carbon fiber bead core that is used for tire according to the present invention;
Each mark is as follows among the figure:
The 1-tyre bead; The 2-first tyre bead enhancement layer; The 3-second tyre bead enhancement layer; 4-anti-package body ply; The wear-resisting glue of 5-tyre bead; The 6-body ply; 7-droplet-shaped carbon fiber bead core; The 8-inside liner; The 9-sidewall; The 11-aircraft tyre; 12-droplet-shaped mold halves one; 13-droplet-shaped mold halves two; 14-carbon fiber bead core bar
The specific embodiment
Below in conjunction with exemplary embodiment a kind of embodiment that is used for the droplet-shaped carbon fiber bead core of tire of the present invention is described.
As depicted in figs. 1 and 2; According to aircraft tyre 11 of the present invention; Its tyre bead 1 mainly is the wear-resisting glue of droplet-shaped carbon fiber bead core 7, the first tyre bead enhancement layer 2, the second tyre bead enhancement layer 3, tyre bead 5, body ply 6, inside liner 8 and anti-package body ply 4 etc. by section and forms; See that from cross section place it is connected with sidewall 9.
Droplet-shaped carbon fiber bead core 7 is closely twined by body ply 6 and 4 of anti-package body plies; Form seamless connection each other; At body ply 6, anti-package body ply 4 radially inner sides; Tightly twine successively by the first tyre bead enhancement layer 2, the second tyre bead enhancement layer 3; For making tyre bead 1 have sufficiently high mechanical characteristics; The terminal end of its first tyre bead enhancement layer 2, the second tyre bead enhancement layer 3 extends to droplet-shaped carbon fiber bead core 7 radially outermost cusp positions, and 4 of anti-package body plies begin to be pressed in from droplet-shaped carbon fiber bead core 7 radially outermost cusp positions and extend to another tyre bead on the body ply 6 always, and anti-package body ply 4 can make aircraft tyre 11 bear stronger impact load like this.
Fig. 3 and Fig. 4 show the forming method of a kind of embodiment of droplet-shaped carbon fiber bead core 7; Wherein form the droplet-shaped cavity behind droplet-shaped mold halves 1 and droplet-shaped mold halves 2 13 matched moulds; Rotate around centre rotational axis with certain speed behind droplet-shaped mold halves 1 and droplet-shaped mold halves 2 13 matched moulds; When rotating; Driving the carbon fiber bead core bar of carrying continuously that is coated with adhesive agent 14 rotates; Make in the inner chamber that is droplet-shaped after carbon fiber bead core bar 14 is wrapped in droplet-shaped mold halves 1 and droplet-shaped mold halves 2 13 matched moulds, owing to the effect of adhesive agent, bead core bonds together each other and forms the bead core that section is droplet-shaped after 14 windings of carbon fiber bead core bar are full of inner chamber; Cut off the carbon fiber bead core bar of carrying continuously 14 subsequently, open and just desirablely behind water droplet type die half module 1 and droplet-shaped mold halves 2 13 matched moulds go out droplet-shaped carbon fiber bead core 7.
Claims (2)
1. droplet-shaped carbon fiber bead core that is used for tire; It is characterized in that: bead core is a circular ring; The bead core section form be an end be circular arc, the other end by arc transition to pointed droplet-shaped, bead core institute apply materials is the composite material that is formed by the carbon fiber bundle that adhesive agent coats.
2. the described a kind of forming method that is used for the droplet-shaped carbon fiber bead core of tire of claim 1; It is characterized in that: at first use a mould that can rotate; The mould inside cavity is that section is described droplet-shaped bead core cross section structure during the mould mold closing, and an end of the continuous carbon fiber composite material bead core bar opening through mould top is wrapped in the rotary die internal cavities; Rotary die rotates around centre rotational axis with certain speed afterwards; Constantly carry the composite material bead core bar of the continuous carbon fiber bundle that is coated with adhesive agent simultaneously; Make constantly to produce continuously in its mould cavity and twine, be all drop-shaped carbon fiber bead core until forming with the mould cavity section; After forming a complete droplet-shaped carbon fiber bead core, open mould, take out droplet-shaped carbon fiber bead core, use it in the manufacturing procedure of preparing subsequent tyre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210031023XA CN102555692A (en) | 2012-02-13 | 2012-02-13 | Water-drop type carbon fiber tyre bead core used for tyre and forming method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210031023XA CN102555692A (en) | 2012-02-13 | 2012-02-13 | Water-drop type carbon fiber tyre bead core used for tyre and forming method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102555692A true CN102555692A (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210031023XA Pending CN102555692A (en) | 2012-02-13 | 2012-02-13 | Water-drop type carbon fiber tyre bead core used for tyre and forming method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102555692A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140261953A1 (en) * | 2013-03-15 | 2014-09-18 | Bridgestone Americas Tire Operations, Llc | Pneumatic tire and method of manufacture |
| CN107250201A (en) * | 2015-03-09 | 2017-10-13 | 住友橡胶工业株式会社 | Tire |
| CN107244192A (en) * | 2017-07-03 | 2017-10-13 | 山东丰源轮胎制造股份有限公司 | A kind of Whole fiber semi-steel radial tire |
| WO2019105620A1 (en) | 2017-11-30 | 2019-06-06 | Continental Reifen Deutschland Gmbh | Pneumatic vehicle tires |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4320791A (en) * | 1979-09-12 | 1982-03-23 | Honda Giken Kogyo Kabushiki Kaisha | Pneumatic tire bead comprising high modulus fibers and polyurethane matrix |
| JPH04133807A (en) * | 1990-09-25 | 1992-05-07 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
| JPH06286426A (en) * | 1993-03-30 | 1994-10-11 | Bridgestone Corp | Pneumatic radial tire |
| US6318430B1 (en) * | 1998-06-19 | 2001-11-20 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire with hybrid material bead apex |
-
2012
- 2012-02-13 CN CN201210031023XA patent/CN102555692A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4320791A (en) * | 1979-09-12 | 1982-03-23 | Honda Giken Kogyo Kabushiki Kaisha | Pneumatic tire bead comprising high modulus fibers and polyurethane matrix |
| JPH04133807A (en) * | 1990-09-25 | 1992-05-07 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
| JPH06286426A (en) * | 1993-03-30 | 1994-10-11 | Bridgestone Corp | Pneumatic radial tire |
| US6318430B1 (en) * | 1998-06-19 | 2001-11-20 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire with hybrid material bead apex |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140261953A1 (en) * | 2013-03-15 | 2014-09-18 | Bridgestone Americas Tire Operations, Llc | Pneumatic tire and method of manufacture |
| US10040323B2 (en) * | 2013-03-15 | 2018-08-07 | Bridgestone Americas Tire Operations, Llc | Pneumatic tire with bead reinforcing elements at least partially formed from carbon fibers |
| CN107250201A (en) * | 2015-03-09 | 2017-10-13 | 住友橡胶工业株式会社 | Tire |
| US10570282B2 (en) | 2015-03-09 | 2020-02-25 | Sumitomo Rubber Industries, Ltd. | Tire |
| CN107250201B (en) * | 2015-03-09 | 2020-04-28 | 住友橡胶工业株式会社 | Tyre for vehicle wheels |
| CN107244192A (en) * | 2017-07-03 | 2017-10-13 | 山东丰源轮胎制造股份有限公司 | A kind of Whole fiber semi-steel radial tire |
| WO2019105620A1 (en) | 2017-11-30 | 2019-06-06 | Continental Reifen Deutschland Gmbh | Pneumatic vehicle tires |
| DE102017221549A1 (en) | 2017-11-30 | 2019-06-06 | Continental Reifen Deutschland Gmbh | Vehicle tires |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120711 |