CN113799550A - Composite bead core for tire and manufacturing method thereof - Google Patents
Composite bead core for tire and manufacturing method thereof Download PDFInfo
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- CN113799550A CN113799550A CN202111129335.XA CN202111129335A CN113799550A CN 113799550 A CN113799550 A CN 113799550A CN 202111129335 A CN202111129335 A CN 202111129335A CN 113799550 A CN113799550 A CN 113799550A
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- tire
- core
- composite
- chemical fiber
- composite bead
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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
- B29D30/50—Covering, e.g. by winding, the separate bead-rings or bead-cores with textile material, e.g. with flipper strips
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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
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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
- B60C2015/046—Cable cores, i.e. cores made-up of twisted wires
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ropes Or Cables (AREA)
- Tires In General (AREA)
- Tyre Moulding (AREA)
Abstract
The composite bead core for the tire is manufactured by a composite bead cord, wherein the composite bead cord has a skin-core structure formed by weaving a plurality of chemical fiber filaments outside a steel wire core wire. The manufacturing method of the composite bead core for the tire comprises the following steps: obtaining a steel wire core wire; obtaining a plurality of chemical fiber filaments; the chemical fiber filament is woven outside the steel wire core wire to form a chemical fiber coating layer with a three-dimensional interweaving structure, and the chemical fiber coating layer and the steel wire core wire form a composite tire bead cord with a skin-core structure; treating the composite bead cord with a dipping solution; and continuously winding the composite bead cord treated by the dipping solution layer by layer to form the composite bead core for the tire with a preset shape.
Description
Technical Field
The application belongs to the technical field of vehicle tires, and particularly relates to a composite bead core for a tire and a manufacturing method thereof.
Background
The beads play an essential role in the tire. In the tire molding and manufacturing process, the tire bead hoops the tire body to prevent the tire body from being reversely drawn under certain inflation pressure. The tire is fitted to a rim and the beads are subjected to deformations caused by the mounting. The beads must also ensure a seal between the tyre and the rim. During the running of the vehicle, the centrifugal forces, the lateral thrusts and the torques acting on the tyre cause the beads to be subjected also to longitudinal and torsional stresses.
At present, the light weight of the tire is the main research and development direction of tire factories, and especially, the development and application of novel framework materials are important directions for the upgrade of the tire. The patent related to chemical fiber bead and chemical fiber and metal composite bead has related reports from companies such as Sumitomo rubber, Prinoston, Goodyear, double endurance, Toyo rubber, etc. However, at present, steel wire tire beads are commonly adopted in the processing and manufacturing of tires at home and abroad, and related chemical fibers and chemical fiber and metal composite tire beads are blank in the application of actual production.
Disclosure of Invention
In view of the above, in one aspect, some embodiments disclose a composite bead core for a tire, which is made of a composite bead cord having a sheath-core structure formed by weaving a plurality of chemical fiber filaments outside a steel core wire.
On the other hand, some embodiments disclose a manufacturing method of a composite bead core for a tire, which is used for manufacturing the composite bead core for the tire disclosed by some embodiments, and the manufacturing method specifically comprises the following steps:
obtaining a steel wire core wire;
obtaining a plurality of chemical fiber filaments;
the chemical fiber filament is woven outside the steel wire core wire to form a chemical fiber coating layer with a three-dimensional interweaving structure, and the chemical fiber coating layer and the steel wire core wire form a composite tire bead cord with a skin-core structure;
treating the composite bead cord with a dipping solution;
and continuously winding the composite bead cord treated by the dipping solution layer by layer to form the composite bead core for the tire with a preset shape.
Further, some embodiments disclose a method for manufacturing a composite bead core for a tire, in which a plurality of chemical fiber filaments form a strand of yarn, the yarn is treated with an impregnating solution, and the treated yarn is woven outside a steel wire core to form a chemical fiber coating layer.
Some embodiments disclose a method of making a composite bead core for a tire, treating a yarn with an impregnating solution comprising:
impregnating the yarn for 100-200 s by using an impregnating solution;
extruding glue through a die orifice to form a coating on the surface of the yarn;
and heating and drying the yarn with the coating on the surface at 150-250 ℃.
Some embodiments disclose a method for manufacturing a composite bead core for a tire, in which a yarn is woven outside a steel wire core to form a chemical fiber coating layer, comprising:
a plurality of yarns are used as warp yarns and are arranged in parallel with a steel wire core wire;
a chemical fiber multifilament with the specification of 200-1000D is not twisted to be used as a weft yarn;
the weft yarn reciprocates in a shuttling mode among the warp yarns, the warp yarns and the weft yarns are interwoven to form a closed tubular chemical fiber covering layer with a three-dimensional structure, and the closed tubular chemical fiber covering layer surrounds the outer portion of the steel wire core wire to form the composite bead core.
Some embodiments disclose a method for manufacturing a composite bead core for a tire, wherein a plurality of 200-3000D chemical fiber filaments are twisted and impregnated into one yarn, or a plurality of 200-3000D chemical fiber filaments are doubled and impregnated into one yarn.
Some embodiments disclose a method of making a composite bead core for a tire, the treating a composite bead cord with a dip comprising:
impregnating the composite tire bead cord with an impregnating solution for 100-200 s;
extruding glue through a die orifice to form a coating on the surface of the composite tire bead cord;
and heating and drying the composite tire bead cord with the coating on the surface at 150-250 ℃.
Some embodiments disclose a method for manufacturing a composite bead core for a tire, wherein the diameter of a steel wire core wire is 0.5-3 mm.
Some embodiments disclose a manufacturing method of a composite bead core for a tire, wherein the dipping solution comprises the following components in parts by mass: 30-60 parts of softened water, 0.1-2 parts of 29.5% ammonia water, 3-6 parts of 75% resorcinol-formaldehyde resin, 40-60 parts of 41% butadiene-pyridine latex, 1-5 parts of 37% formaldehyde and 1-6 parts of 50% blocked isonitrile acid ester.
Some embodiments disclose a method for manufacturing a composite bead core for a tire, wherein a steel wire core wire is a single steel wire or is formed by twisting a plurality of steel wires.
The composite bead core for the tire prepared by the manufacturing method of the composite bead core for the tire disclosed by the embodiment of the application adopts chemical fibers and steel wires to form the composite material of the composite bead cord, the chemical fibers have high strength and modulus, and have excellent performance of bearing dynamic load and local impact action, the composite bead core is formed by continuously winding and laminating composite bead cords with a sheath-core structure under the vulcanization conditions of the high temperature of more than 200 ℃ and the high pressure of more than 2.5MPa, the fiber orientation is set to be consistent with the rotation direction of a tire, the strength utilization rate of the fibers is improved, the strength utilization rate is more than 90 percent, the weight of the traditional bead is reduced, the stress of the bead part is more reasonable, the service durability of the bead is improved, meanwhile, delamination and downward bulge which are easy to occur at the tire bead part of the tire are reduced, the safety factor of the tire bead part of the tire is adjusted, and the overall use performance of the tire is improved.
Drawings
FIG. 1 schematic view of the composite bead core structure for tire of example 1
FIG. 2 example 2 composite bead cord weaving weft yarn path schematic
Reference numerals
1 composite bead cord 11 steel wire core wire
12 warp and 13 weft
2 first latch needle 3 second latch needle
Detailed Description
The word "embodiment" as used herein, is not necessarily to be construed as preferred or advantageous over other embodiments, including any embodiment illustrated as "exemplary". Performance index tests in the examples of this application, unless otherwise indicated, were performed using routine experimentation in the art. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; other test methods and techniques not specifically mentioned in the present application are those commonly employed by those of ordinary skill in the art.
The terms "substantially" and "about" are used herein to describe small fluctuations. For example, they may mean less than or equal to ± 5%, such as less than or equal to ± 2%, such as less than or equal to ± 1%, such as less than or equal to ± 0.5%, such as less than or equal to ± 0.2%, such as less than or equal to ± 0.1%, such as less than or equal to ± 0.05%. Numerical data represented or presented herein in a range format is used merely for convenience and brevity and thus should be interpreted flexibly to include not only the numerical values explicitly recited as the limits of the range, but also to include all the individual numerical values or sub-ranges encompassed within that range as if each numerical value and sub-range is explicitly recited. For example, a numerical range of "1 to 5%" should be interpreted to include not only the explicitly recited values of 1% to 5%, but also include individual values and sub-ranges within the indicated range. Thus, included in this numerical range are individual values, such as 2%, 3.5%, and 4%, and sub-ranges, such as 1% to 3%, 2% to 4%, and 3% to 5%, etc. This principle applies equally to ranges reciting only one numerical value. Moreover, such an interpretation applies regardless of the breadth of the range or the characteristics being described.
In this document, including the claims, conjunctions such as "comprising," including, "" carrying, "" having, "" containing, "" involving, "" containing, "and the like are understood to be open-ended, i.e., to mean" including but not limited to. The conjunctions "consisting of … …" and "consisting of … …" are closed conjunctions.
In the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In the examples, some methods, means, instruments, apparatuses, etc. known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.
On the premise of no conflict, the technical features disclosed in the embodiments of the present application may be combined arbitrarily, and the obtained technical solution belongs to the content disclosed in the embodiments of the present application.
In some embodiments, the composite bead core for a tire is made of a composite bead cord having a sheath-core structure formed by weaving a plurality of chemical fiber filaments outside a steel core wire.
Generally, a steel wire core is a linear core formed of steel wires, including a single steel wire as the linear core, or a combination of a plurality of steel wires to form the linear core, which is cylindrical as a whole. The way in which the plurality of steel wires are combined to form the linear core comprises twisting the plurality of steel wires into a steel wire rope.
Generally, the diameter of the steel wire core wire is controlled to be between 0.5 and 3mm, for example, a single steel wire with a diameter of between 0.5 and 3mm forms a linear core, or a plurality of steel wires with a thinner diameter are combined to form a linear core with an overall diameter of between 0.5 and 3 mm. Typically the tensile strength of the steel cord is greater than 2200 MPa.
Generally, a plurality of chemical fiber filaments are woven outside a steel wire core wire to form a closed fiber layer, and the closed fiber layer is wrapped on the steel wire core wire to form a sheath-core structure; the fiber layer is provided with a three-dimensional crossed structure formed by interweaving a plurality of chemical fiber filaments, and the fiber layer is wrapped outside a steel wire core wire which is cylindrical as a whole to form a composite bead cord which is cylindrical as a whole.
Generally, the process of forming the composite bead core by the composite bead cord is to wind the composite bead cord at a predetermined radius, the winding is continuously performed, after a composite bead cord layer with a certain width is formed, the winding is continuously performed, a second composite bead cord layer is further formed outside the composite bead cord layer, and the process is repeated for a plurality of times, so as to obtain a plurality of composite bead cord layers, and the plurality of composite bead cord layers form the composite bead core with a certain shape and specification. The dipping liquid is dipped in the chemical fiber layer of the surface layer of the composite bead cord, the dipping liquid forms a film layer, and the composite bead cord forming the composite bead core promotes the inner part of the composite bead core to form a uniform integrated structure through the mutual adhesion of the film layer, thereby being beneficial to strengthening the structural strength of the composite bead core. On the other hand, the film layer formed by the impregnation liquid can also increase the adhesive force between the composite bead core and the rubber layer on the surface of the composite bead core, and the overall strength and the service performance of the tire are improved.
Generally, as an alternative embodiment, the shape of the composite bead core is generally circular, with a square or hexagonal cross-section.
In some embodiments, a method of making a composite bead core for a tire comprises:
obtaining a steel wire core wire; for example, one steel wire is used as a steel wire core wire, or a plurality of steel wires with smaller diameter are used as a steel wire core wire which is used as a linear core part of the composite bead core;
obtaining a plurality of chemical fiber filaments; for example, a plurality of chemical fiber filaments with the specification of 200-3000D can be selected to form yarns, or chemical fiber multifilaments can be formed to be used as raw materials for forming chemical fiber coating layers; as an optional embodiment, the chemical fiber filaments are any one of aramid fibers, carbon fibers or basalt fibers, and have the advantages of high strength, low elongation, low creep and high temperature resistance; generally, the chemical fiber filament has a density smaller than that of a steel wire, and can bear the acting forces of stretching, compression, torsion, centrifugation and the like brought by the running process of a tire; as an optional embodiment, a plurality of chemical fiber filaments are twisted and twisted into a yarn; generally, the twist is set to be 15-60 twists/m;
the chemical fiber filament is woven outside the steel wire core wire to form a chemical fiber coating layer with a three-dimensional interweaving structure, and the chemical fiber coating layer and the steel wire core wire form a composite tire bead cord with a skin-core structure; generally, as an alternative embodiment, a plurality of chemical fiber filaments are selected to form a yarn, or a multifilament is formed, and the yarn or the multifilament is woven on a steel wire core wire to obtain a chemical fiber coating layer; the chemical fiber filament adopts a parallel yarn or a twisting mode to form a chemical fiber coating layer with a three-dimensional structure, and the yarns are distributed and oriented along the axial direction of the cord thread, so that the strength utilization rate of the fiber is effectively improved;
treating the composite bead cord with a dipping solution; generally, after the composite bead cord is treated with the dipping solution and then dried, a coating film can be formed on the surface of the composite bead cord, and the coating film can increase the adhesive strength between a fiber coating layer and a rubber layer outside the fiber coating layer and fibers inside a fiber composite bead core;
and continuously winding the composite bead cord treated by the dipping solution layer by layer to form the composite bead core for the tire with a preset shape.
As an alternative embodiment, a plurality of chemical fiber filaments form a strand of yarn, the yarn is treated by the impregnating solution, and the treated yarn is woven outside the steel wire core wire to form a chemical fiber coating layer.
As an alternative embodiment, treating the yarn with the impregnation fluid comprises: impregnating the yarn for 100-200 s by using an impregnating solution; extruding glue through a die orifice to form a liquid impregnation layer on the surface of the yarn; and heating and drying the yarn with the impregnation liquid layer on the surface at 150-250 ℃.
As an alternative embodiment, the yarn drying process with the impregnation liquid layer on the surface comprises the following steps: drying at the temperature of 150-200 ℃ for 120-180 seconds, then drying at the temperature of 200-250 ℃ for 120-180 seconds, and drying the impregnation liquid to form a coating film so as to obtain the impregnated yarn with the adhesive attaching rate of more than 30%. In general, the glue coverage refers to the mass ratio of coating film to yarn attached to the yarn.
As an alternative embodiment, the weaving of the yarn outside the steel wire core to form the chemical fiber coating layer comprises: a plurality of yarns are used as warp yarns, are arranged in parallel with a steel wire core wire and are introduced to a weaving machine; a chemical fiber multifilament with the specification of 200-1000D is not twisted to be used as a weft yarn; the weft yarn reciprocates in a shuttling mode among the warp yarns, the warp yarns and the weft yarns are interwoven to form a closed tubular chemical fiber covering layer with a three-dimensional structure, and the closed tubular chemical fiber covering layer surrounds the outer portion of the steel wire core wire to form the composite bead core.
As an optional embodiment, a plurality of 200-3000D chemical fiber filaments are twisted and gummed into one yarn, or a plurality of 200-3000D chemical fiber filaments are doubled and gummed into one yarn.
As an alternative embodiment, the treatment of the composite bead cord with the dipping liquid comprises: impregnating the composite tire bead cord with an impregnating solution for 100-200 s; extruding glue through a die orifice to form a coating on the surface of the composite tire bead cord; and heating and drying the composite tire bead cord with the coating on the surface at 150-250 ℃.
As an alternative embodiment, the drying process of the composite bead cord with the dipping liquid on the surface comprises the following steps: drying at the temperature of 150-200 ℃ for 120-180 seconds, then drying at the temperature of 200-250 ℃ for 120-180 seconds, and drying the dipping solution to form a coating film to obtain the dipped composite tire bead cord with the glue attaching rate of more than 30%. In general, the coating ratio refers to the mass ratio of the coating film attached to the composite bead cord.
As an alternative embodiment, the impregnation liquid comprises, in parts by mass: 30-60 parts of softened water, 0.1-2 parts of 29.5% ammonia water, 3-6 parts of 75% resorcinol-formaldehyde resin, 40-60 parts of 41% butadiene-pyridine latex, 1-5 parts of 37% formaldehyde and 1-6 parts of 50% blocked isonitrile acid ester. Wherein, 20 to 40 parts of softened water is used for diluting resorcinol-formaldehyde resin with the solid content of 75 percent; 10-20 parts of softened water for diluting pyriproxyfen emulsion with the solid content of 41%; further, the diluted resorcinol-formaldehyde resin is mixed with the diluted pyridine latex in a heating state, and ammonia water, formaldehyde and blocked isocyanate are added to obtain the impregnation liquid.
The technical details are further illustrated in the following examples.
Example 1
Fig. 1 is a schematic view of the structure of a composite bead core for a tire disclosed in example 1.
In example 1, the composite bead core for a tire was formed by winding composite bead cords 1 on a bead plate layer by layer, and the cross-sectional shape thereof was a hexagon, and the composite bead cords 1 were wound 19 times to form a five-layer array in the number of 3-4-5-4-3 on the hexagonal cross-section.
Example 2
Fig. 2 is a schematic diagram of the movement locus of the weft in the cross section of the composite bead cord disclosed in embodiment 2.
In example 2, the step of weaving the yarn outside the steel wire core to form the chemical fiber coating layer comprises the following steps: a plurality of yarns are used as warp yarns 12, are arranged in parallel with a steel wire core wire 11 and are led into a weaving machine; the steel wire core wire 11 is positioned in the center, and a plurality of yarns 12 are uniformly distributed on the circular surface of the steel wire core wire 11 and have consistent orientation; one weft yarn 13 reciprocates in a shuttling mode among a plurality of warp yarns 12, the warp yarns 12 and the weft yarns 13 are interwoven to form a closed tubular chemical fiber coating layer with a three-dimensional structure, and the closed tubular chemical fiber coating layer surrounds the outer portion of the steel wire core wire to form a composite bead core; wherein, the motion trail of the weft yarn 13 is set as follows:
as shown in fig. 2, the left side yarn of the cross section of the composite bead cord is taken as an inlet, the weft yarn 13 moves to the first latch needle 2 on the right side along with the weft needle from the inlet through the upper half warp of the cross section, the weft yarn is inserted into the latch needle hook and then moves back and forth along with the latch needle to be cast off for looping, and meanwhile, the weft yarn returns to the inlet along the original path to finish the weaving of the upper half; then, the weft yarn 13 moves to the second latch needle 3 on the right side along with the weft yarn needle from the inlet through the warp yarn on the lower half of the cross section, the weft yarn is cast into the latch needle and then is cast off to form a loop along with the forward and backward movement of the latch needle, meanwhile, the weft yarn returns to the inlet along the original path, the weaving of the lower half is completed, and the movement track of the weft yarn winding steel wire core wire and a plurality of warp yarns in one circle is formed.
And repeating the motion tracks, and knitting by taking different yarns as inlets until the composite bead cord is manufactured.
Example 3
Example 3 discloses a process for making a composite bead core comprising:
(1) taking one aramid fiber filament with the specification of 1500D, twisting on a ring twisting machine, setting the twist number as 20 twists/m, and taking the aramid fiber filament as warp for standby;
(2) respectively leading out 15 obtained warps from a creel tensioner, arranging the warps in parallel, and drawing the warps to a reed of a weaving machine through a yarn dividing device and a threading device of the weaving machine;
(3) taking a polyester multifilament with the specification of 500D as weft yarn without twisting;
(4) taking a steel wire core wire with the diameter of 0.7mm, and drawing the steel wire core wire to a reed of a weaving machine through an unwinding device, a magnetic eye and a tension device;
(5) the steel wire core wires are closely arranged at the central position through the opening and closing movement of the weaving machine and the shuttling reciprocating movement of the weft yarns among the warp yarns, and the warp yarns and the weft yarns are interwoven to form a closed tubular structure coated outside the steel wire core wires, so that the composite tire bead cord is obtained.
(6) Fully immersing the obtained composite bead cord in an immersion liquid for 140 s; extruding glue through a die orifice, drying at 150 ℃ for 180 seconds, and then performing heat treatment at 225 ℃ for 120 seconds, wherein the glue attaching rate is more than 30%. The impregnation liquid comprises: 30 parts of softened water, 0.1 part of ammonia water with the concentration of 29.5%, 3 parts of resorcinol-formaldehyde resin with the solid content of 75%, 40 parts of butadiene-pyridine latex with the solid content of 41%, 1 part of formaldehyde with the concentration of 37% and 1 part of blocked isonitrile acid ester with the concentration of 50%.
(7) The diameter of the heated and dried composite bead cord is 2mm, the linear density is 9.85g/m, and the composite bead cord is wound on a steel wire coil disc layer by layer through a traction device to form a composite bead core. The method comprises the following steps: a single composite bead cord is first formed in 3 windings adjacent to each other on the circumferential surface of the bead plate to form a first layer of composite bead cord; then, the winding is continued to form 4 windings adjacent to each other on the circumferential surface of the bead ring, to form a second layer overlapping the first layer in the radial direction of the bead ring, to repeatedly form 19 windings to form five layers of the array of the composite bead cords arranged in the array of 3-4-5-4-3, and finally to wind the joint portion with a rubber sheet to obtain a composite bead core having a hexagonal cross section as a whole.
The single composite bead cord obtained in example 3 was subjected to a breaking strength performance test, and the breaking strength was 5553N.
Example 4
Example 4 discloses a process for making a composite bead core comprising:
(1) taking one aramid fiber filament with the specification of 1500D without twisting; fully immersing the aramid filaments in the prepared first impregnation liquid for 120 s; extruding glue through a die orifice, heating and drying at 110 ℃ for 150 seconds, wherein the glue attaching rate is more than 10 percent, and the warp yarns are used for standby;
(2) respectively leading out 15 warp yarns obtained in the step (1) from a creel tensioner, arranging the warp yarns in parallel, and drawing the warp yarns to a reed of a weaving machine through a yarn dividing device and a threading device of the weaving machine;
(3) taking a polyester multifilament with the specification of 500D as weft yarn without twisting;
(4) taking a steel wire core wire with the diameter of 0.8mm, wherein the steel wire core wire is formed by twisting three steel wires; and is drawn to the reed of the loom through an unwinding device, a magnetic eye and a tension device;
(5) the steel wire core wires are closely arranged at the central position through the opening and closing movement of the weaving machine and the shuttling reciprocating movement of the weft yarns among the warp yarns, and the warp yarns and the weft yarns are interwoven to form a closed tubular structure coated outside the steel wire core wires, so that the composite tire bead cord is obtained.
(6) Fully immersing the obtained composite bead cord in a second immersion liquid for 140 s; extruding glue through a die orifice, firstly drying for 180 seconds at 150 ℃, then carrying out heat treatment for 120 seconds at 225 ℃, wherein the glue attaching rate is more than 30%;
(7) the diameter of the heated and dried composite bead cord is 2.1mm, the linear density is 10.25g/m, and the composite bead cord is wound on a steel wire coil disc layer by layer through a traction device to form a composite bead core. The method comprises the following steps: a single composite bead cord is first formed in 3 windings adjacent to each other on the circumferential surface of the bead plate to form a first layer of composite bead cord; then, the winding is continued to form 4 windings adjacent to each other on the circumferential surface of the bead ring, to form a second layer overlapping the first layer in the radial direction of the bead ring, to repeatedly form 19 windings to form five layers of the array of the composite bead cords arranged in the array of 3-4-5-4-3, and finally to wind the joint portion with a rubber sheet to obtain a composite bead core having a hexagonal cross section as a whole.
The first impregnation liquid is the same as the second impregnation liquid, and comprises: 40 parts of softened water, 2 parts of ammonia water with the concentration of 29.5%, 6 parts of resorcinol-formaldehyde resin with the solid content of 75%, 60 parts of butadiene-pyridine latex with the solid content of 41%, 5 parts of formaldehyde with the concentration of 37% and 6 parts of blocked isocyanate with the concentration of 50%.
The single composite bead cord obtained in example 4 was subjected to a breaking strength performance test, and the breaking strength was 5980N.
Comparative example 1
Manufacture of all-steel wire bead core
(1) Taking a common strength tire bead steel wire with the specification of 2mm, sequentially passing the tire bead steel wire through a tension device and a steel wire preheating device, then coating a thin layer of rubber compound on the surface of the steel wire through a die orifice of a screw extruder to increase the bonding capacity between the steel wire and the surface of the steel wire, wherein the diameter of the coated steel wire is 2.12 mm.
(2) And winding the encapsulated common steel wires on the steel wire ring disc layer by layer to form the all-steel wire bead core. The method comprises the following steps: a single bead wire is first formed into 3 windings adjacent to each other on the circumferential surface of the bead disc, forming a first layer; then, 4 windings formed adjacent to each other on the circumferential surface of the bead filler are continuously wound to form a second layer overlapping the first layer in the radial direction of the bead filler, and the winding is repeated to form 19 windings to form an array of bead wires arranged in five layers in an array of 3-4-5-4-3, and finally, a joint portion is wound with a film to produce an all-wire bead core having a hexagonal cross section as a whole.
The single bead wire obtained in comparative example 1 was subjected to a breaking strength performance test, and the breaking strength was 5260N.
The performance parameters of the composite bead cores of examples 3 and 4 and the all-steel wire bead core of comparative example 1 are shown in table 1, and it can be seen from the data in table 1 that the breaking strength of the composite bead core is higher than that of the all-steel wire bead core under the same diameter, however, the density of the composite bead core disclosed in the examples of the present application is reduced by 59% compared with that of the all-steel wire bead core, and the weight of the conventional bead is reduced while the mechanical properties are ensured.
TABLE 1 comparison of Properties of single composite bead cord of example and single bead wire sample of comparative example
| Sample (I) | Diameter mm | Linear density g/m | Breaking strengthN |
| Example 3 | 2.0 | 9.85 | 5553 |
| Example 4 | 2.1 | 10.25 | 5980 |
| Comparative example 1 | 2.0NT | 24.5 | 5260 |
The composite bead core for the tire is prepared by the manufacturing method of the composite bead core for the tire, the weight of the traditional bead is reduced, the stress of the bead position is more reasonable, the use durability of the bead is improved, the delamination and downward bulge which easily occur at the bead position of the tire are reduced, the safety factor of the bead position of the tire is adjusted, and the overall use performance of the tire is improved.
The technical solutions and the technical details disclosed in the embodiments of the present application are only examples to illustrate the inventive concept of the present application, and do not constitute a limitation on the technical solutions of the present application, and all the conventional changes, substitutions, combinations, and the like made to the technical details disclosed in the present application have the same inventive concept as the present application and are within the protection scope of the claims of the present application.
Claims (10)
1. The composite bead core for the tire is characterized by being manufactured by a composite bead cord, wherein the composite bead cord is provided with a sheath-core structure formed by weaving a plurality of chemical fiber filaments outside a steel wire core wire.
2. A method of making a composite bead core for a tire, for making the composite bead core for a tire of claim 1, the method of making comprising:
obtaining a steel wire core wire;
obtaining a plurality of chemical fiber filaments;
the chemical fiber filament is woven outside the steel wire core wire to form a chemical fiber coating layer with a three-dimensional interweaving structure, and the chemical fiber coating layer and the steel wire core wire form a composite tire bead cord with a skin-core structure;
treating the composite bead cord with a dipping solution;
and continuously winding the composite bead cord treated by the dipping solution layer by layer to form the composite bead core for the tire with a preset shape.
3. The method of claim 2, wherein a plurality of the chemical fiber filaments form a strand of yarn, the yarn is treated with an impregnating solution, and the treated yarn is woven outside the steel wire core to form a chemical fiber coating layer.
4. The method of making a composite bead core for a tire as in claim 3, wherein treating the yarn with an impregnating solution comprises:
impregnating the yarn for 100-200 s by using an impregnating solution;
extruding glue through a die orifice to form a coating on the surface of the yarn;
and heating and drying the yarn with the coating on the surface at 150-250 ℃.
5. The method of claim 3, wherein said yarn weaving to form a chemical fiber coating outside said steel cord includes:
a plurality of yarns are used as warp yarns and are arranged in parallel with a steel wire core wire;
a chemical fiber multifilament with the specification of 200-1000D is not twisted to be used as a weft yarn;
the weft yarn reciprocates in a shuttling mode among the warp yarns, the warp yarns and the weft yarns are interwoven to form a closed tubular chemical fiber covering layer with a three-dimensional structure, and the closed tubular chemical fiber covering layer surrounds the outer portion of the steel wire core wire to form the composite bead core.
6. The manufacturing method of the composite bead core for the tire as claimed in claim 3, wherein a plurality of 200-3000D chemical fiber filaments are twisted and dipped into one yarn, or a plurality of 200-3000D chemical fiber filaments are doubled and dipped into one yarn.
7. The method of making a composite bead core for a tire as in claim 2, wherein treating the composite bead cord with a dip comprises:
impregnating the composite bead cord with an impregnating solution for 100-200 s;
extruding glue through a die orifice to form a coating on the surface of the composite tire bead cord;
and heating and drying the composite tire bead cord with the coating on the surface at 150-250 ℃.
8. The method for manufacturing a composite bead core for a tire as claimed in claim 2, wherein the diameter of the steel wire core wire is 0.5 to 3 mm.
9. The method for manufacturing a composite bead core for a tire as claimed in claim 2, wherein the dipping liquid comprises, in parts by mass: 30-60 parts of softened water, 0.1-2 parts of 29.5% ammonia water, 3-6 parts of 75% resorcinol-formaldehyde resin, 40-60 parts of 41% butadiene-pyridine latex, 1-5 parts of 37% formaldehyde and 1-6 parts of 50% blocked isonitrile acid ester.
10. The method of claim 2, wherein the steel cord is a single steel wire or is twisted from a plurality of steel wires.
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| CN202111129335.XA CN113799550B (en) | 2021-09-26 | 2021-09-26 | Composite bead core for tire and manufacturing method thereof |
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| CN202111129335.XA CN113799550B (en) | 2021-09-26 | 2021-09-26 | Composite bead core for tire and manufacturing method thereof |
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Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1467490A (en) * | 1973-03-07 | 1977-03-16 | Michelin & Cie | Pneumatic tyres |
| US4825924A (en) * | 1986-01-31 | 1989-05-02 | Continental Aktiengesellschaft | Bead core for a pneumatic vehicle tire including hollow cords |
| US5099892A (en) * | 1989-12-22 | 1992-03-31 | Bridgestone/Firestone, Inc. | Process and apparatus for the manufacture of an automotive tire bead |
| US5473877A (en) * | 1992-04-16 | 1995-12-12 | Sp Reifenwerke Gmbh | Reinforcement cords for elastomeric products |
| US5551498A (en) * | 1993-04-21 | 1996-09-03 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire with hybrid steel/aramid belt cord |
| JPH0948218A (en) * | 1995-05-31 | 1997-02-18 | Bridgestone Corp | Pneumatic tire |
| JP2000343913A (en) * | 1999-06-03 | 2000-12-12 | Bridgestone Corp | Pneumatic radial tire and manufacture thereof |
| JP2006044643A (en) * | 2004-07-05 | 2006-02-16 | Sumitomo Denko Steel Wire Kk | Annular concentrically twisted bead cord |
| CN1772518A (en) * | 2004-11-12 | 2006-05-17 | 住友橡胶工业株式会社 | Pneumatic tire |
| US20100000652A1 (en) * | 2006-11-22 | 2010-01-07 | Stefano Tresoldi | Tire with light weight bead core |
| JP2010173437A (en) * | 2009-01-29 | 2010-08-12 | Sumitomo Rubber Ind Ltd | Pneumatic radial tire |
| CN102507569A (en) * | 2011-10-28 | 2012-06-20 | 西南化工研究设计院 | Method for separating and measuring cobalt in different oxidation states in organic acid cobalt salt |
| CN103072436A (en) * | 2013-01-24 | 2013-05-01 | 山东胜通钢帘线有限公司 | Spiral composite bead |
| JP5403123B1 (en) * | 2012-08-21 | 2014-01-29 | 横浜ゴム株式会社 | Pneumatic tire |
| CN205273060U (en) * | 2016-01-08 | 2016-06-01 | 蚌埠伊诺华轮胎有限公司 | Novel folding tire |
| US20170361557A1 (en) * | 2014-12-16 | 2017-12-21 | Bridgestone Americas Tire Operations, Llc | Tire having an over-molded bead construction |
| CN110520309A (en) * | 2017-03-27 | 2019-11-29 | 横滨橡胶株式会社 | Pneumatic tire |
| JP2019218033A (en) * | 2018-06-22 | 2019-12-26 | 株式会社ブリヂストン | Resin-coated cord and pneumatic tire |
| CN110997295A (en) * | 2017-07-20 | 2020-04-10 | 大陆轮胎德国有限公司 | Method for producing a vehicle tyre, vehicle tyre produced according to said method and use of a treated reinforcing support |
-
2021
- 2021-09-26 CN CN202111129335.XA patent/CN113799550B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1467490A (en) * | 1973-03-07 | 1977-03-16 | Michelin & Cie | Pneumatic tyres |
| US4825924A (en) * | 1986-01-31 | 1989-05-02 | Continental Aktiengesellschaft | Bead core for a pneumatic vehicle tire including hollow cords |
| US5099892A (en) * | 1989-12-22 | 1992-03-31 | Bridgestone/Firestone, Inc. | Process and apparatus for the manufacture of an automotive tire bead |
| US5473877A (en) * | 1992-04-16 | 1995-12-12 | Sp Reifenwerke Gmbh | Reinforcement cords for elastomeric products |
| US5551498A (en) * | 1993-04-21 | 1996-09-03 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire with hybrid steel/aramid belt cord |
| JPH0948218A (en) * | 1995-05-31 | 1997-02-18 | Bridgestone Corp | Pneumatic tire |
| JP2000343913A (en) * | 1999-06-03 | 2000-12-12 | Bridgestone Corp | Pneumatic radial tire and manufacture thereof |
| JP2006044643A (en) * | 2004-07-05 | 2006-02-16 | Sumitomo Denko Steel Wire Kk | Annular concentrically twisted bead cord |
| CN1772518A (en) * | 2004-11-12 | 2006-05-17 | 住友橡胶工业株式会社 | Pneumatic tire |
| US20060102270A1 (en) * | 2004-11-12 | 2006-05-18 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire |
| US20100000652A1 (en) * | 2006-11-22 | 2010-01-07 | Stefano Tresoldi | Tire with light weight bead core |
| JP2010173437A (en) * | 2009-01-29 | 2010-08-12 | Sumitomo Rubber Ind Ltd | Pneumatic radial tire |
| CN102507569A (en) * | 2011-10-28 | 2012-06-20 | 西南化工研究设计院 | Method for separating and measuring cobalt in different oxidation states in organic acid cobalt salt |
| JP5403123B1 (en) * | 2012-08-21 | 2014-01-29 | 横浜ゴム株式会社 | Pneumatic tire |
| CN103072436A (en) * | 2013-01-24 | 2013-05-01 | 山东胜通钢帘线有限公司 | Spiral composite bead |
| US20170361557A1 (en) * | 2014-12-16 | 2017-12-21 | Bridgestone Americas Tire Operations, Llc | Tire having an over-molded bead construction |
| CN205273060U (en) * | 2016-01-08 | 2016-06-01 | 蚌埠伊诺华轮胎有限公司 | Novel folding tire |
| CN110520309A (en) * | 2017-03-27 | 2019-11-29 | 横滨橡胶株式会社 | Pneumatic tire |
| CN110997295A (en) * | 2017-07-20 | 2020-04-10 | 大陆轮胎德国有限公司 | Method for producing a vehicle tyre, vehicle tyre produced according to said method and use of a treated reinforcing support |
| JP2019218033A (en) * | 2018-06-22 | 2019-12-26 | 株式会社ブリヂストン | Resin-coated cord and pneumatic tire |
Non-Patent Citations (1)
| Title |
|---|
| 李汉堂;: "复合帘线及其在橡胶制品中的应用" * |
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