CN1715553A - Steel wire fpr reinforcing rubber - Google Patents
Steel wire fpr reinforcing rubber Download PDFInfo
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- CN1715553A CN1715553A CN 200510079189 CN200510079189A CN1715553A CN 1715553 A CN1715553 A CN 1715553A CN 200510079189 CN200510079189 CN 200510079189 CN 200510079189 A CN200510079189 A CN 200510079189A CN 1715553 A CN1715553 A CN 1715553A
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- monofilament
- bands
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- major diameter
- steel wire
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0606—Reinforcing cords for rubber or plastic articles
- D07B1/062—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the strand configuration
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2015—Strands
- D07B2201/2016—Strands characterised by their cross-sectional shape
- D07B2201/2018—Strands characterised by their cross-sectional shape oval
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2015—Strands
- D07B2201/2022—Strands coreless
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2015—Strands
- D07B2201/2024—Strands twisted
- D07B2201/2027—Compact winding
- D07B2201/2028—Compact winding having the same lay direction and lay pitch
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2015—Strands
- D07B2201/2024—Strands twisted
- D07B2201/2029—Open winding
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- Ropes Or Cables (AREA)
- Tires In General (AREA)
Abstract
The rubber reinforcement steel wire of the invention respectively turns n singles (n is equal to 3 to 6) into spiral shape and a monolayer is twisted by the means of forming a gap among the singles to obtain the open twisting structure of 1 multiplied by n. The spiral shape of each single is flat. And the section of a cable line approximates ellipse. The single is arranged to be inegalitarian arrangement as defined, the major axis of the cable line of the single has different spiral width in defined shape, or the ratio of the spiral angle (Alpha) of the major axis and the spiral angle (Beta) of a minor axis is set within prescribed limit. Therefore, extension in the direction of cable line in an under load area, which results from stretching, can be inhibited, with the result that the invasive property of the rubber can be well kept.
Description
Technical field
The present invention relates to the steel wire fpr reinforcing rubber that reinforcement uses of burying underground as rubbers such as tire or conveyer belts, particularly relate to monolayer constructions will open twisted, the spiral-shaped of monofilament be flat, the oval-shaped steel wire fpr reinforcing rubber in cross section (oval opening bands).
Background technology
As the steel wire fpr reinforcing rubber that is embedded in the rubbers such as tire or conveyer belt, use the steel wire that for example 3～6 monofilament (steel wire) twisted is become the what is called 1 * n (n=3～6) of monolayer constructions will always.The steel wire of this monolayer constructions will, its central part become the space of straw-like on the bands length direction, particularly make under the situation of the sealing twisted that monofilament is close to each other the space closure of bands central part at dense ground twisted.At this moment, when for example steel wire becomes complex with rubber in the tire building operation, rubber can not be impregnated in the space of this bands central part, if the bands central part remains with the form of hollow bulb, then meeting such as the moisture immersion of immersing bands inside from the wound of surface of tyre becomes the space of bands central part of hollow bulb, and utilize capillarity and soak in bands inside along its length, the result, corrode from bands inside, the fatigue durability of steel wire is worsened, often shorten the life-span of tire.Therefore, in the steel wire of monolayer constructions will, in order to ensure the rubber dipped type, the monofilament that is designed to form round spiral makes the open twisted structure that monofilament is not close to each other than the loose ground twisted.
But, monofilaments is become the open twisted bands of round spiral, even because because the stretching of low-load region, gap between monofilament is evanescence also, so for example bands is being clamped into the adding in the sulphur operation of calendering procedure in the sheet rubber and rubber, when being applied with tension force on bands, the gap between monofilament just can be closed, may damage the rubber impregnability.
Therefore, as for example real opening shown in the flat 1-62396 communique, as the bands that can keep the rubber dipped type better, can consider individual layer open twisted structure, the spiral-shaped of monofilament be the steel wire fpr reinforcing rubber (oval open bands) of substantially elliptical for flat and bands cross section.The open twisted of this individual layer is constructed, the spiral-shaped of monofilament is flat bands (oval open bands), when being subjected to tensile load, monofilament is each other in the contact earlier of minor axis side, this becomes constraint and the extensional deformation of inhibition bands, so allow the gap of the immersion of rubber easily in the maintenance of major diameter side, therefore, compare the rubber dipped type that can keep good with the bands of cross section circle.
Again, different with it, as for example spy open flat 2-91291 communique, the spy opens shown in the flat 10-266083 communique, measure as the rubber impregnability of the steel wire of guaranteeing monolayer constructions will, the steel wire of following structure is also by known: its bands cross section is a substantially elliptical, and on the bands length direction, alternately be arranged with the discontiguous at all each other part of monofilament and at least 2 parts that monofilament contacts with each other, but in this case, though the shape stability of bands becomes well, twist with the fingers tight part and too much can not obtain sufficient rubber dipped type.
And, the open twisted of monolayer constructions will, monofilament spiral-shaped is the flat bands cross section steel wire fpr reinforcing rubber (oval open bands) that is substantially elliptical, owing to the contact in the minor axis portion of monofilament becomes the extensional deformation that constraint has suppressed bands, keep the gap on the length-diameter part easily, so to compare the rubber dipped type good with the bands of cross section circle, but even so, for example in sheet rubber, sandwiching in the calendering procedure of bands when tire is made, under the effect of the tension force when the spool on being arranged on scroll support is drawn bands, still can make the gap smaller between monofilament, and cause becoming the state that rubber can not immerse.
Therefore, problem of the present invention is, suppress the stretching, extension on the spiral-shaped bands length direction that produces because of the stretching of low-load region for steel wire fpr reinforcing rubber flat, the cross section ellipse (oval opening bands) open twisted, monofilament of monolayer constructions will, thereby can keep good rubber dipped type.
Summary of the invention
The inventor be conceived to monolayer constructions will open twisted, the spiral-shaped of monofilament be the arrangement of the monofilament in the steel wire fpr reinforcing rubber flat, the cross section ellipse (oval open bands) and the relation of rubber dipped type, further investigate repeatedly, the state that found that the monofilament arrangement is relevant with the state in the gap between the monofilament that causes that stretches, and then much relations are arranged with the rubber dipped type, made the 1st invention based on this point.
Promptly, the steel wire fpr reinforcing rubber of the 1st invention, be for example to be suitable as that the filament diameter of burying reinforcement underground of rubber such as tire or conveyer belt is the steel wire of 0.20～0.45mm, it is that n root (n=3～6) monofilament is formed helical form respectively, and with the mode that between monofilament, forms the gap carry out twisted with individual layer and the open twisted of 1 * n construct, the spiral-shaped of each monofilament is flat, the bands cross section is a substantially elliptical, it is characterized in that: n root monofilament be arranged in all uniformly-spaced arrangements that bands cross section upper edge circumferentially is not 360 °/n, but unequal at interval arrangement, at 2 monofilament under near state mutual circumscribed the minor axis part of a side of the bands cross section of regulation, the tangent line of the monofilament periphery on the point of contact of these 2 monofilament, with the line angulation α at the center of the following monofilament of binding on the point of contact of these 2 monofilament be 3～25 °, described monofilament is near the monofilament of the approaching above-mentioned tangent line minor axis part of the opposite side of this bands cross section.
Construct for the open twisted of individual layer, each monofilament spiral-shaped is the flat bands cross section steel wire (oval open bands) that is substantially elliptical, in the past, the arrangement of monofilament is circumferentially with the uniformly-spaced arrangement of 360 °/n (n=3) in bands cross section upper edge, in this case, when applying the tension force of low-load region, the gap reduces equably between each monofilament along with bands extends to length direction, the extensional deformation of bands is easy, for example in sheet rubber, sandwiching in the calendering procedure of bands when tire is made, because the tension force the when spool on being arranged on scroll support is drawn bands, on all parts, gap between monofilament all can diminish, thereby can become the state that rubber can not immerse.Relative with it, steel wire of the present invention, n root monofilament be arranged in equally spaced arrangement that bands cross section upper edge circumferentially is not 360 °/n (n=3) but unequal arrangement, gap between monofilament is inhomogeneous, so local contact between monofilament when applying low-tension, owing to this contact produces resistance, the stretching, extension of bands integral body is suppressed, and has suppressed reducing of gap.And, the unequal degree that this monofilament is arranged, available angle [alpha] is represented, described angle [alpha] be at 2 monofilament under near state mutual circumscribed the minor axis part of a side of the bands cross section of regulation, the tangent line of the monofilament periphery on the point of contact of these 2 monofilament, with the point of contact of these 2 monofilament on the line angulation at center of the following monofilament of binding, described monofilament is near the monofilament of the approaching above-mentioned tangent line minor axis of the opposite side of this bands cross section part, when this angle [alpha] is 3～25 °, even when applying low-tension, also can keep good rubber dipped type.
If above-mentioned angle [alpha] is less than 3 °, then the monofilament unequal degree of arranging is too little, and approximate equality ground in gap reduces between each monofilament along with bands extends to length direction when applying the tension force of low-load region, so the rubber dipped type is poor.Again, when above-mentioned angle [alpha] surpassed 25 °, monofilament was arranged too unequal and is made the twisted instability of bands.
Like this, the steel wire of the 1st invention, local contact between monofilament when applying low-tension, owing to this contact produces resistance, the stretching, extension of bands integral body is suppressed, and has suppressed reducing of gap, guaranteed to immerse the gap of rubber, can keep good rubber dipped type, can prevent the corrosion that the immersion of moisture etc. causes, improve fatigue durability.
Again, the inventor, be conceived to the open twisted of monolayer constructions will, the spiral-shaped relation of going into length (supply length) and rubber dipped type for flat and bands cross section for the sth. made by twisting of each monofilament in the oval steel wire fpr reinforcing rubber (oval open bands) of monofilament, further investigate repeatedly, found that by go into length (supply length) at the sth. made by twisting of each monofilament and go up design difference to a certain degree, monofilament is created a difference on coil width, apply underload and when the bands length direction stretches, although span is identical, but thereby the big monofilament of the little monofilament of coil width and coil width is compared and is more approached wide-spread state and become and be difficult to stretch (will stretch the bigger tensile force of same amount needs again) again, therefore the stretching, extension of bands is suppressed, thereby the gap that the monofilament that coil width is big does not have fully to stretch between monofilament reduces to be suppressed, and makes the 2nd invention based on this point.
Promptly, the steel wire fpr reinforcing rubber of the 2nd invention, it is the reinforcement of burying underground that is suitable as rubber such as tire or conveyer belt for example, filament diameter is the steel wire of 0.20～0.45mm, it is that n root (n=3～6) monofilament is formed helical form respectively, and with the mode that between monofilament, forms the gap carry out twisted with individual layer and the open twisted of 1 * n construct, the spiral-shaped of each monofilament is flat, the bands cross section is a substantially elliptical, it is characterized in that: at least 1 monofilament is different in the coil width of the major diameter side of bands cross section with other monofilament in the coil width of the major diameter side of bands cross section, poor with at the coil width Dmin of this major diameter side of the monofilament of the coil width minimum of the major diameter side of bands cross section of the coil width Dmax of this major diameter side of the monofilament of the coil width maximum of the major diameter side of bands cross section, with respect to the ratio of n root monofilament at the mean value Dave of the coil width of the major diameter side of bands cross section: (Dmax-Dmin)/Dave is 0.01～0.07.
Construct for the open twisted of individual layer, the spiral-shaped of each monofilament is the steel wire (oval open bands) of substantially elliptical for flat and bands cross section, in the past, it is roughly even that the sth. made by twisting of each monofilament is gone into length (supply length), in this case, when applying the tension force of low-load region, each monofilament similarly stretches, the gap reduces equably between monofilament, easy extensional deformation, for example in sheet rubber, sandwiching in the calendering procedure of bands when tire is made, since the tension force the when spool on being arranged on scroll support is drawn bands, the gap smaller between monofilament, thus can become the state that rubber can not immerse.Relative with it, steel wire of the present invention, at least 1 monofilament is different in the coil width of the major diameter side of bands cross section with other monofilament in the coil width of the major diameter side of bands cross section, poor with at the coil width Dmin of this major diameter side of the monofilament of the coil width minimum of the major diameter side of bands cross section of the coil width Dmax of this major diameter side of the monofilament of the coil width maximum of the major diameter side of bands cross section, with respect to the ratio of n root monofilament at the mean value of the coil width of the major diameter side of bands cross section: (Dmax-Dmin)/Dave is 0.01～0.07, in this case, between at least 1 monofilament and other monofilament, go on the length (supply length) to have required difference at sth. made by twisting, thereby monofilament forms difference on coil width, apply underload and when the bands length direction stretches, although span is identical, but thereby the big monofilament of the little monofilament of coil width and coil width is compared and is more approached wide-spread state and become and be difficult to stretch (will stretch the bigger tensile force of same amount needs again) again, therefore the stretching, extension of bands is suppressed, thereby the gap that the big monofilament of coil width does not have fully to stretch between monofilament reduces to be suppressed.
When Dmax-Dmin less than 0.01 the time, then to go into length (supply length) roughly even for the sth. made by twisting of each monofilament, each monofilament stretches equally when applying the tension force of low-load region, the gap between monofilament is impartial reduces, and can not obtain sufficient rubber dipped type.Again, when Dmax-Dmin greater than 0.07 the time, then the sth. made by twisting of each monofilament is gone into the discrete of length (supply length) and is become excessive, the shape of bands can not keep evenly (deterioration of twisted shape), and fatigue durability worsens.
Like this, the steel wire of the 2nd invention, when applying low-tension, the monofilament that the monofilament that coil width is little is bigger than coil width is difficult to stretch, and can suppress the stretching, extension of bands thus, thereby can suppress the reducing of gap between monofilament, guarantee to immerse the gap of rubber, can keep good rubber dipped type, can prevent the corrosion that the immersion of moisture etc. causes, improve fatigue durability.
Again, the inventor be conceived to monolayer constructions will open twisted, the spiral-shaped of monofilament be the spiral angle of the monofilament of oval steel wire fpr reinforcing rubber (oval open bands) and the relation of rubber dipped type for flat and bands cross section, further investigate repeatedly, the state in the gap between the monofilament of the spiral angle that found that the major diameter side and the ratio of the spiral angle of minor axis side and stretching is relevant, and then much relations are arranged with the rubber dipped type, make the 3rd invention based on this point.
Promptly, the steel wire fpr reinforcing rubber of the 3rd invention, it is the reinforcement of burying underground that is suitable as rubber such as tire or conveyer belt for example, filament diameter is the steel wire of 0.20～0.45mm, it is that n root (n=3～6) monofilament is formed helical form respectively, and with the mode that between monofilament, forms the gap carry out twisted with individual layer and the open twisted of 1 * n construct, the spiral-shaped of each monofilament is flat, the bands cross section is a substantially elliptical, it is characterized in that: each monofilament is 1.1～1.8 at the spiral angle α of the major diameter side of bands cross section with ratio α/β at the spiral angle β of the minor axis side of bands cross section.
Construct for the open twisted of individual layer, the spiral-shaped of each monofilament is the steel wire (oval open bands) of substantially elliptical for flat and bands cross section, in the past, the spiral angle β of the spiral angle α of major diameter side and minor axis side is (α/β is less than 1.1) much at one, in this case, when applying the tension force of low-load region along with bands extends to length direction, major diameter side and minor axis side be spiral angle diminish (becoming the state that monofilament integral body is fallen down simultaneously) similarly, so the extensional deformation of bands is easy, for example in sheet rubber, sandwiching in the calendering procedure of bands when tire is made, because the tension force the when spool on being arranged on scroll support is drawn bands, gap smaller between monofilament becomes the state that rubber can not immerse.Relative with it, steel wire of the present invention, the spiral angle α of major diameter side and ratio (spiral angle ratio) α/β of the spiral angle β of minor axis side are 1.1～1.8, in this case, thereby monofilament at first produces resistance in the minor axis side contacts each other when applying low-tension, suppress the stretching, extension of bands length direction, suppressed the reducing of gap of major diameter side like this, guaranteed to immerse the gap of rubber.
If spiral angle than α/β less than 1.1 (the spiral angle β of the spiral angle α of major diameter side and minor axis side much at one), (when applying the tension force of low-load region) is along with bands extends to length direction when then applying low-tension, major diameter side and minor axis side all in the same manner spiral angle diminish, in minor axis side and major diameter side, gap between monofilament diminishes simultaneously, and the rubber dipped type descends.Again, when spiral angle surpasses 1.8 than α/β, the difficulty thereby the processing of the too high bands of flat ratio becomes.So-called flat ratio, be meant flat wound shape that the monofilament of the steel wire of open twisted structure is had under state freely, establish the value that major diameter is made as a, represents with following formula when minor axis is b.
Flat ratio=(b/a) * 100
The spiral angle α of major diameter side is determined that by the lay pitch spiral angle β of minor axis side is determined by flat ratio.Steel wire of the present invention, adjusting the lay pitch and flat ratio and manufacturing spiral angle is above-mentioned scope (1.1～1.8) than α/β.
Like this, the steel wire of the 3rd invention, monofilament is each other at first in the minor axis side contacts when applying low-tension, thereby the generation resistance, the stretching, extension of bands length direction is suppressed, and suppresses the reducing of gap of major diameter side like this, guaranteed to immerse the gap of rubber, can keep good rubber dipped type, can prevent the corrosion that the immersion of moisture etc. causes, improve fatigue durability.
Description of drawings
Fig. 1 is the diagrammatic side view of 1 * 3 steel wire of constructing of the 1st working of an invention mode.
Fig. 2 is the cutaway view of 1 * 3 steel wire of constructing of the 1st working of an invention mode.
Fig. 3 is the cutaway view of 1 * 4 steel wire of constructing of the 1st working of an invention mode.
Fig. 4 is the chart of the relation of the monofilament configuration status of the open bands of ellipse of 1 * 3 structure of expression the 1st working of an invention mode and rubber dipped type.
Fig. 5 is the diagrammatic side view of the steel wire of the 2nd working of an invention mode.
Fig. 6 is the enlarged drawing of the monofilament of state that the steel wire of the 2nd working of an invention mode has been taken apart.
Fig. 7 is that the monofilament of the open bands of ellipse of expression the 2nd working of an invention mode is twisted with the fingers the chart into the relation of the discrete and rubber dipped type of length.
Fig. 8 is the schematic illustration of the steel wire of the 3rd working of an invention mode.Fig. 8 (a) is the figure that schematically shows the major diameter side with side view, and Fig. 8 (b) is the figure that schematically shows the minor axis side with side view.
Fig. 9 is that the ellipse of expression the 3rd working of an invention mode is opened the chart of the spiral angle of bands than the relation of α/β and rubber dipped type.
The specific embodiment
(the 1st working of an invention mode)
The steel wire of the 1st working of an invention mode, be steel wire fpr reinforcing rubber as described below (oval open bands (open cord)): it is to be that n root (n=3～6) monofilament of 0.20～0.45mm forms helical form respectively and constructs with the open twisted (オ-プ Application Twist リ) that individual layer carries out 1 * n that twisted get in the mode that forms the gap between monofilament with filament diameter, the spiral-shaped of each monofilament is flat, and the bands cross section is a substantially elliptical.This steel wire uses as the reinforcement of burying underground of for example tire or conveyer belt and other rubbers.Fig. 1 schematically showed as the one example, twisted filament diameter be the steel wire 110 of what is called 1 * 3 structure of 3 monofilament 101,102,103 of 0.20～0.45mm.Again, Fig. 2 be illustrated near the minor axis part of a side of bands cross section of steel wire of this 1 * 3 structure, 2 monofilament circumscribed states mutually.
3 monofilament 101,102,103 of this steel wire 110 shown in a, b, c among Fig. 1 like that with unequal interval (a, b, c at least one difference) twisted.In this case, 3 monofilament 101,102,103 circumferentially are not impartial spaced with 360 °/n (n=3) in bands cross section upper edge, but unequal at interval arrangement.And, particularly this steel wire manufactures following form: as shown in Figure 2, at 2 monofilament 101,102 under near state mutual circumscribed the minor axis part of a side of the bands cross section of regulation, the tangent line S of the monofilament periphery on the point of contact of these 2 monofilament 101,102, with the line T angulation α at center of another root monofilament 103 of binding on the point of contact of these 2 monofilament 101,102 be 3～25 °, described monofilament 103 is the monofilament of the approaching above-mentioned tangent line S minor axis part of the opposite side of this bands cross section near.
The bands cross section upper edge that is arranged in of 3 monofilament 101,102,103 of this steel wire 110 circumferentially is not impartial spaced with 360 °/n, but unequal at interval arrangement, gap between monofilament is inhomogeneous, so local contact between monofilament when applying low-tension, owing to this contact produces resistance, thereby the stretching, extension of bands integral body is suppressed, and has suppressed reducing of gap.And, particularly as shown in Figure 2, at 2 monofilament 101,102 under near state circumscribed mutually the minor axis part of a side of the bands cross section of regulation, these 2 monofilament 101, the tangent line S of the monofilament periphery on 102 the point of contact, with these 2 monofilament 101, the line T angulation α at the center of another root monofilament 103 of the binding on 102 the point of contact is 3～25 °, described monofilament 103 is the monofilament of the approaching above-mentioned tangent line S minor axis part of the opposite side of this bands cross section near, thereby when applying low-tension, also can keep good rubber dipped type, can prevent the corrosion that the immersion of moisture etc. causes, improve fatigue durability.
Be not limited to 1 * 3, for 1 * 4,1 * 5, the open bands of 1 * 6 ellipse too, for example 1 * 4 o'clock, as shown in Figure 3, at 4 monofilament 101,102,103,2 monofilament 101 in 104,102 under near state circumscribed mutually the minor axis part of a side of the bands cross section of regulation, these 2 monofilament 101, the tangent line S of the monofilament periphery on 102 the point of contact, with these 2 monofilament 101, the line T angulation α at the center of the binding monofilament 103 on 102 the point of contact is 3～25 °, described monofilament 103 is near monofilament of the most approaching above-mentioned tangent line the minor axis of the opposite side of this bands cross section part, thus, when applying low-tension, also can keep good rubber dipped type, can prevent the corrosion that the immersion of moisture etc. causes, improve fatigue durability.
Fig. 4 represents that (filament diameter is 0.20～0.45mm) the monofilament configuration status and the relation of rubber dipped type for the open bands of ellipse of 1 * 3 structure of the 1st working of an invention mode.Rubber dipped type when applying underload, as shown in Figure 4, if is 3 ° value then bad (the rubber dipped type is low) as the difference of the maximum of a, the b of the spacing of 3 monofilament 101,102,103, c and minimum of a value less than being equivalent to above-mentioned angle [alpha], the maximum of a, b, c and the difference of minimum of a value are then obviously to improve more than 3 ° the value if be equivalent to above-mentioned angle [alpha].To be equivalent to above-mentioned angle [alpha] be 25 ° value then the twisted instability of bands but if the difference of the maximum of a, b, c and minimum of a value surpasses.
(the 2nd working of an invention mode)
The steel wire of the 2nd working of an invention mode, be steel wire fpr reinforcing rubber as described below (oval open bands): it is to be that n root (n=3～6) monofilament of 0.20～0.45mm forms helical form respectively and constructs with the open twisted that individual layer carries out 1 * n that twisted get in the mode that forms the gap between monofilament with filament diameter, the spiral-shaped of each monofilament is flat, and the bands cross section is a substantially elliptical.This steel wire uses as the reinforcement of burying underground of for example tire or conveyer belt and other rubbers.Fig. 5 schematically showed as the one example, twisted filament diameter be the steel wire 110 of what is called 1 * 3 structure of 3 monofilament 201,202,203 of 0.20～0.45mm.The monofilament of the state after again, Fig. 6 represents steel wire taken apart.
3 monofilament 201 of this steel wire 210,202, it is inhomogeneous that 203 sth. made by twisting is gone into length (supply length), as shown in Figure 6, each monofilament 201,202,203 coil width D1 in the major diameter side of bands cross section, D2, D3 mutually different (also can be that at least 1 monofilament is different in the coil width of the major diameter side of bands cross section with other bands in the coil width of the major diameter side of bands cross section), coil width Dmax in this major diameter side of the monofilament of the coil width maximum of the major diameter side of bands cross section, poor with at the coil width Dmin of this major diameter side of the monofilament of the coil width minimum of the major diameter side of bands cross section is with respect to 3 monofilament 201,202,203 coil width D1 in the major diameter side of bands cross section, D2, the ratio of the mean value Dave of D3: (Dmax-Dmin)/Dave is 0.01～0.07.
This steel wire 210, make each monofilament 201,202,203 different mutually respectively at coil width D1, D2, the D3 of the major diameter side of bands cross section, perhaps make at least 1 monofilament different with other monofilament in the coil width of the major diameter side of bands cross section in the coil width of the major diameter side of bands cross section, thus, when being applied with underload, the monofilament that the little monofilament of coil width and coil width are big is compared and is difficult to stretch, and the stretching, extension of bands is suppressed, and therefore can suppress the reducing of gap between monofilament.And, particularly by poor with at the coil width Dmin of this major diameter side of the monofilament of the coil width minimum of the major diameter side of bands cross section of the coil width Dmax that makes in this major diameter side of the monofilament of the coil width maximum of the major diameter side of bands cross section, with respect to 3 monofilament 201,202,203 coil width D1 in the major diameter side of bands cross section, D2, the ratio of the mean value Dave of D3: (Dmax-Dmin)/Dave is 0.01～0.07, can when applying low-tension, also keep good rubber dipped type, can prevent the corrosion that the immersion of moisture etc. causes, improve fatigue durability.
Fig. 7 represents that the monofilament of the open bands of ellipse (filament diameter is 0.20～0.45mm, with respect to minor axis, the mean value of major diameter is 1.15～2.0) of 1 * 3 structure of the 2nd working of an invention mode twists with the fingers the relation into the rubber dipped type of the discrete of length when applying underload (5kg).Rubber dipped type when applying underload, as shown in Figure 7, if be equivalent to discrete then bad (rubber dipped type low) of (Dmax-Dmin)/Dave less than 0.01 degree; If be equivalent to the discrete then obviously raising that (Dmax-Dmin)/Dave is the degree more than 0.01.If but (Dmax-Dmin)/Dave surpasses 0.07 then the twisted instability of bands, and fatigue durability worsens.The discrete relation with the rubber dipped type that monofilament when this applies underload is twisted with the fingers into length is not limited to 1 * 3, and the open bands of the ellipse for 1 * 4,1 * 5,1 * 6 too.
(the 3rd working of an invention mode)
The steel wire of the 3rd working of an invention mode, be steel wire fpr reinforcing rubber as described below (oval open bands): it is to be that n root (n=3～6) monofilament of 0.20～0.45mm forms helical form respectively and constructs with the open twisted that individual layer carries out 1 * n that twisted get in the mode that forms the gap between monofilament with filament diameter, the spiral-shaped of each monofilament is flat, and the bands cross section is a substantially elliptical.This steel wire uses as the reinforcement of burying underground of for example tire or conveyer belt and other rubbers.Fig. 8 schematically show as the one example, twisted filament diameter be the steel wire 310 of what is called 1 * 3 structure of 3 monofilament 301,302,303 of 0.20～0.45mm.Fig. 8 (a) is the figure that schematically shows the major diameter side of bands cross section with side view again, and Fig. 8 (b) is the figure that schematically shows the minor axis side of bands cross section with side view.
This steel wire 310, as shown in Figure 8, the spiral angle α of the major diameter side of bands cross section is bigger than the spiral angle β of minor axis side.And the spiral angle α of its major diameter side and ratio α/β of the spiral angle β of minor axis side are 1.1～1.8.The spiral angle α of major diameter side is determined that by the lay pitch spiral angle β of minor axis side is determined by flat ratio.To manufacture spiral angle be 1.1～1.8 form than α/β to this steel wire 310 by adjusting the lay pitch and flat ratio.
This steel wire 310, making the spiral angle α of major diameter side and the ratio of the spiral angle β of minor axis side (spiral angle ratio) α/β is 1.1～1.8, thereby monofilament is each other at first in the minor axis side contacts when applying low-tension, thereby producing resistance is suppressed the stretching, extension of bands length direction, reducing of the gap of inhibition major diameter side guaranteed to immerse the gap of rubber like this, can keep good rubber dipped type, can prevent the corrosion that the immersion of moisture etc. causes, improve fatigue durability.
Fig. 9 represent 1 * 3 structure of the 3rd working of an invention mode the open bands of ellipse (filament diameter be 0.20～0.45mm) apply the 5kg load time spiral angle than the relation of α/β and rubber dipped type.Rubber dipped type when applying underload, as shown in Figure 9, if α/β is less than 1.1 then bad (the rubber dipped type is low); If α/β is more than 1.1 then obviously improves.But bands is processed the difficulty that becomes (making difficulty) when α/β surpasses 1.8.The relation of the α/β of low-load region and the rubber dipped type situation into 5kg that is not limited to load is roughly the same in low-load region.Again, the α/β in this low-load region and the relation of rubber dipped type are not limited to 1 * 3, and the open bands of the ellipse for 1 * 4,1 * 5,1 * 6 too.
Claims (3)
1, a kind of steel wire fpr reinforcing rubber, it is that n root (n=3～6) monofilament is formed helical form respectively, and with the mode that between monofilament, forms the gap carry out twisted with individual layer and the open twisted of 1 * n construct, the spiral-shaped of each monofilament is flat, the bands cross section is a substantially elliptical, it is characterized in that: n root monofilament be arranged in all uniformly-spaced arrangements that bands cross section upper edge circumferentially is not 360 °/n, but unequal at interval arrangement, at 2 monofilament under near state mutual circumscribed the minor axis part of a side of the bands cross section of regulation, the tangent line of the monofilament periphery on the point of contact of these 2 monofilament, with the line angulation α at the center of the following monofilament of binding on the point of contact of these 2 monofilament be 3～25 °, described monofilament is near the monofilament of the approaching above-mentioned tangent line minor axis part of the opposite side of this bands cross section.
2, a kind of steel wire fpr reinforcing rubber, it is that n root (n=3～6) monofilament is formed helical form respectively, and with the mode that between monofilament, forms the gap carry out twisted with individual layer and the open twisted of 1 * n construct, the spiral-shaped of each monofilament is flat, the bands cross section is a substantially elliptical, it is characterized in that: at least 1 monofilament is different in the coil width of the major diameter side of bands cross section with other monofilament in the coil width of the major diameter side of bands cross section, poor with at the coil width Dmin of this major diameter side of the monofilament of the coil width minimum of the major diameter side of bands cross section of the coil width Dmax of this major diameter side of the monofilament of the coil width maximum of the major diameter side of bands cross section, with respect to the ratio of n root monofilament at the mean value Dave of the coil width of the major diameter side of bands cross section: (Dmax-Dmin)/Dave is 0.01～0.07.
3, a kind of steel wire fpr reinforcing rubber, its be with n root (n=3～6) monofilament form respectively helical form and with the mode that between monofilament, forms the gap carry out twisted with individual layer and the open twisted of 1 * n construct, the spiral-shaped of each monofilament is flat, the bands cross section is a substantially elliptical, it is characterized in that: each monofilament is 1.1～1.8 at the spiral angle α of the major diameter side of bands cross section with ratio α/β at the spiral angle β of the minor axis side of bands cross section.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004192844A JP2006016704A (en) | 2004-06-30 | 2004-06-30 | Steel cord for rubber reinforcement |
| JP192852/04 | 2004-06-30 | ||
| JP192844/04 | 2004-06-30 | ||
| JP2004192848A JP2006016705A (en) | 2004-06-30 | 2004-06-30 | Steel cord for rubber reinforcement |
| JP192848/04 | 2004-06-30 | ||
| JP2004192852A JP2006016706A (en) | 2004-06-30 | 2004-06-30 | Steel cord for rubber reinforcement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1715553A true CN1715553A (en) | 2006-01-04 |
| CN1715553B CN1715553B (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510079189 Active CN1715553B (en) | 2004-06-30 | 2005-06-30 | Steel wire for reinforcing rubber |
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| JP (1) | JP2006016704A (en) |
| CN (1) | CN1715553B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838873A (en) * | 2009-03-18 | 2010-09-22 | 特线工业株式会社 | Rubber-product-reinforcing steel cord and manufacture method thereof |
| CN109311348A (en) * | 2016-06-17 | 2019-02-05 | 株式会社普利司通 | The processing method of tire enhancing plies cords |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5403887B2 (en) * | 2007-09-07 | 2014-01-29 | 株式会社ブリヂストン | Steel cord for tire reinforcement and pneumatic tire |
| CN211872202U (en) * | 2018-10-08 | 2020-11-06 | 贝卡尔特公司 | Steel cord and tire |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0462716B1 (en) * | 1990-06-16 | 1995-06-28 | Tokusen Kogyo Company Limited | Steel cord for reinforcing rubber product |
| KR100493672B1 (en) * | 1998-09-10 | 2005-09-02 | 한국타이어 주식회사 | Steel Cords for Radial Tires |
| JP3846236B2 (en) * | 2001-07-24 | 2006-11-15 | 帝人テクノプロダクツ株式会社 | Hybrid cord and rubber reinforcement |
| JP3898491B2 (en) * | 2001-11-22 | 2007-03-28 | 住友ゴム工業株式会社 | Metal cord for reinforcing rubber articles and pneumatic tire using the same |
| US6748731B2 (en) * | 2002-04-08 | 2004-06-15 | Tokusen U.S.A., Inc. | Tire cord |
-
2004
- 2004-06-30 JP JP2004192844A patent/JP2006016704A/en active Pending
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2005
- 2005-06-30 CN CN 200510079189 patent/CN1715553B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838873A (en) * | 2009-03-18 | 2010-09-22 | 特线工业株式会社 | Rubber-product-reinforcing steel cord and manufacture method thereof |
| CN101838873B (en) * | 2009-03-18 | 2015-02-25 | 特线工业株式会社 | Rubber-product-reinforcing steel cord and method for manufacturingsame |
| CN109311348A (en) * | 2016-06-17 | 2019-02-05 | 株式会社普利司通 | The processing method of tire enhancing plies cords |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006016704A (en) | 2006-01-19 |
| CN1715553B (en) | 2011-04-20 |
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