CN203372006U - Straight single steel wire for enhancing tire belted layer, tire belted layer and tire - Google Patents
Straight single steel wire for enhancing tire belted layer, tire belted layer and tire Download PDFInfo
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- CN203372006U CN203372006U CN201320454285.7U CN201320454285U CN203372006U CN 203372006 U CN203372006 U CN 203372006U CN 201320454285 U CN201320454285 U CN 201320454285U CN 203372006 U CN203372006 U CN 203372006U
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Abstract
The utility model relates to a straight single steel wire for enhancing a tire belted layer. The straight single steel wire is characterized in that the straight single steel wire is less than 30mm in arc height, is subjected to plastically torsional deformation, and is twisted on a double twister in the axial direction of the single wire. The plastic twisting operation can eliminate the surface stress difference of the single steel wire and obtain the straight single steel wire for enhancing the tire belted layer. A simple method for effectively producing the straight single steel wire for enhancing the tire belted layer is given under a condition of the existing equipment. The utility model also relates to the tire belted layer and a tire.
Description
Technical field
The utility model relates to the monofilament that air-inflation tyre is used, and particularly is used in the monofilament strengthened on the air-inflation tyre bracing ply.The utility model relates to the air-inflation tyre bracing ply strengthened by this monofilament simultaneously, and the tire that contains the bracing ply strengthened by this monofilament.
Background technology
An air-inflation tyre mainly comprises: carcass structure, and have a body piles at least; Tyre surface, be positioned at the carcass outside radially; Belt structure, between carcass and tyre surface.
Existing US4819705A has illustrated the automobile air-inflation tyre of a low energy consumption.This tire has the bracing ply of an annular, and it consists of two-layer rubber fabric, and this rubber fabric is imbedded the metal cords that diameter is not more than 0.603mm.Distance on cross section between the adjacent metal cord is not more than 1mm.This metal cords may be by three, or four, more or five monofilament be reversed into rope and form, filament diameter wherein is that 0.12mm is to 0.25mm.As an alternative of metal cords, in above scope, the steel monofilament of single not twisting may be used.
Existing US5858137A has further disclosed an air-inflation tyre and has not only kept the outstanding characteristic of controlling, and there is no the disrumpent feelings defect of unacceptable bracing ply monofilament.Air-inflation tyre has two-layer bracing ply at least, and every layer all comprises steel monofilament that one deck is straight and with the tire equator direction, to become 10 degree to arrange to the direction of 30 degree.The steel monofilament is arranged according to 25 to 60 of per inchs, every filament diameter be 0.25mm between 0.4mm, rupture pull force is at least 4080MPa-2000*D*95%, here D is filament diameter, unit is mm, and fatigue property is at least 3500 cycles, by three bending testing fatigues, draws.
The production technology that meets the monofilament of above-mentioned application comprises: wire rod wire drawing before this, move the filament diameter needed to, and then by straightener, to align, this all has statement in JP3151118A or KR20080002263U.But this production technology has shortcoming, because produced residual bending stress in drawing process.The first, the cylinder straightener can not provide perfect leveling effect, because straightener can not fully discharge the flexure stress in monofilament.The second, regulating straightener is a job of wasting time and energy very much, and cost is very high.The 3rd, because the flexure stress in monofilament changes in large production, leveling effect is irretentive.For example, the part of monofilament is straight, and another part is not but.
Although the air-inflation tyre in above-mentioned technology is also to comprise the bracing ply strengthened by monofilament, homogeneity and the stability of still having living space and improving the monofilament straightness.
The utility model content
One of the purpose of this utility model is the shortcoming that solves prior art.
Another purpose of the present utility model is to provide a straight steel monofilament that strengthens use for bracing ply on air-inflation tyre.
A purpose more of the present utility model is to guarantee that the steel monofilament has the stability of better straightness.
A purpose more of the present utility model is to have obtained the steel monofilament, and wherein in large production, the standard error of straightness has reduced.
According to one side of the present utility model, a bow higher primary school for the straight steel monofilament of air-inflation tyre bracing ply enhancing use, in 30mm, preferably is less than the characteristics of 20mm.In content of the present utility model, monofilament refers to a not rhizoid of twisting together with other monofilament, but its may along oneself axially by twisting.
A better embodiment of the present utility model is, the steel monofilament is along self axis twisting and produces the Plastic Torsion distortion.Because twisting, the steel monofilament has obtained one and has been different from 0 surface distortion angle.Steel monofilament surface windup-degree should be 0.5 degree between 15 degree, are preferably 1 degree between 5 degree.The twisting of steel monofilament has the advantage of eliminating flexure stress difference.Because the twisting of steel monofilament is to keep stable at the length direction of steel monofilament, the steel monofilament not there will be too large stress variable, so, demonstrated better stable straightness.Therefore, the high intermediate value of bow of straight steel monofilament is less than 20mm, preferably is less than 10mm.Straight steel monofilament bends high standard error and is less than 3mm, preferably is less than 2mm.
According to another one of the present utility model aspect, airtyred bracing ply is to be strengthened in the straight steel monofilament of the many parallel arrangements of 30mm by bow higher primary school.
Many parallel straight steel monofilament may be along different direction twistings, may be imbedded bracing ply by property ground alternately simultaneously, thus S twist with the fingers to monofilament alternately Z sth. made by twisting to monofilament, vice versa.
Many parallel straight steel monofilament may, along different direction twistings, may form independently group simultaneously in bracing ply.One group may only comprise S twist with the fingers to monofilament, another group may only comprise Z twist with the fingers to monofilament, one group of S twist with the fingers to one group of Z twist with the fingers to the steel monofilament composition of alternately arranging.
Many parallel straight steel monofilament may, along different direction twistings, may form independently group simultaneously in bracing ply.Each group may comprise simultaneously S twist with the fingers to monofilament and Z twist with the fingers to monofilament.
According to another aspect of the present utility model, an air-inflation tyre is by being comprised of in the bracing ply of the straight steel monofilament enhancing of 30mm bow higher primary school.
According to the utility model, a kind of straight steel monofilament for the reinforced tire bracing ply is provided, it is characterized in that, the bow higher primary school of described straight steel monofilament is in 30 millimeters.
Preferably, the bow higher primary school of described straight steel monofilament is in 20 millimeters.
Preferably, the high intermediate value of bow of described straight steel monofilament is less than 20 millimeters.
Preferably, the high intermediate value of bow of described straight steel monofilament is less than 10 millimeters.
Preferably, the high standard deviation of bow of described straight steel monofilament is less than 3 millimeters.
Preferably, the high standard deviation of bow of described straight steel monofilament is less than 2 millimeters.
Preferably, described steel monofilament carries out Plastic Torsion and produces the surface distortion angle along the axis of himself, and the surface distortion angle of described straight steel monofilament is between 0.5 degree and 15 degree.
Preferably, the surface distortion angle of described straight steel monofilament is between 1 degree and 5 degree.
The utility model also provides a kind of tire belt, and described tire belt is strengthened by many parallel as above straight steel monofilament.
Preferably, the torsional direction of described many parallel straight steel monofilament is identical, and is embedded in bracing ply.
Preferably, the torsional direction difference of described many parallel straight steel monofilament, and S twist with the fingers to monofilament and Z twist with the fingers to monofilament be arranged alternately with each other and be embedded in bracing ply.
Preferably, the torsional direction difference of described many parallel straight steel monofilament, S twist with the fingers to monofilament form first group, Z twist with the fingers to monofilament form second group, first group and second group is arranged alternately with each other and is embedded in bracing ply.
Preferably, the torsional direction of described many parallel straight steel monofilament is different and form different groups, every group comprise different twist with the fingers to monofilament.
The utility model also provides a kind of tire, it is characterized in that, described tire comprises at least one tire belt as above.
The accompanying drawing explanation
Accompanying drawing 1 illustrates by along steel monofilament axial torsion and produce the technology and equipment of Plastic Torsion distortion.
Accompanying drawing 1A illustrates the torsional direction of steel monofilament.
Accompanying drawing 1B illustrates by along steel monofilament axial torsion and produce the technology and equipment of Plastic Torsion distortion.
Accompanying drawing 1C illustrates by along steel monofilament axial torsion and produce the technology and equipment of Plastic Torsion distortion.
Accompanying drawing 2 illustrates by along steel monofilament axial torsion and produce Plastic Torsion distortion, and on an I-beam wheel two different technology and equipments of twisting with the fingers to monofilament of income.
Accompanying drawing 3 illustrates by along steel monofilament axial torsion and produce Plastic Torsion distortion, and on an I-beam wheel many identical sth. made by twisting of income to the technology and equipment of monofilament.
Accompanying drawing 4 illustrates the cross-sectional plane of the bracing ply of the monofilament of the steel by a many straight parallel enhancing.
Accompanying drawing 5 illustrates the cross-sectional plane of the bracing ply that monofilament of the steel by many straight parallel strengthens, steel monofilament wherein be identical sth. made by twisting to.
Accompanying drawing 5A illustrates the cross-sectional plane of the bracing ply that monofilament of the steel by many straight parallel strengthens, the identical sth. made by twisting of steel monofilament wherein to, in bracing ply, identical sth. made by twisting to monofilament form combination, and place with array configuration.
Accompanying drawing 6 illustrates the cross-sectional plane of the bracing ply that monofilament of the steel by many straight parallel strengthens, steel monofilament wherein is different twist with the fingers to, in bracing ply, different twist with the fingers to the steel monofilament alternately place.
Accompanying drawing 7 and accompanying drawing 7A illustrate the cross-sectional plane of the bracing ply that monofilament of the steel by many straight parallel strengthens, wherein the steel monofilament be different twist with the fingers to, in bracing ply, different twist with the fingers to steel monofilament alternate combinations, and place with array configuration.
Accompanying drawing 8 illustrates the cross-sectional plane of the bracing ply that monofilament of the steel by many straight parallel strengthens, wherein the steel monofilament be different twist with the fingers to, in bracing ply, identical sth. made by twisting to monofilament form combination, the different sth. made by twisting placed to combined and alternatively.
Accompanying drawing 9 illustrates measurement steel monofilament and bends high method and apparatus.
Accompanying drawing 10 illustrates the method and apparatus of measuring steel monofilament surface twist angle.
The specific embodiment
Accompanying drawing 1 illustrates by along steel monofilament axial torsion and produce the technology and equipment of Plastic Torsion distortion.This device is double twisting device.The 2nd, the process units of steel cord, existing explanation in GB20298251A.This double twisting device 2 comprises two reverse plates 15, and they are separately relatively to install.On these two reverse plates 15, guide wheel 14,18 is housed, 24,28.Two flywheel rings 16 and 26, two reverse plates 15 of ining succession.First monofilament 10 drawn from I-beam wheel 12, through guide wheel 13 and 14, and then through flywheel ring 16, then, to guide wheel 18, finally close on I-beam wheel 19.Second monofilament 20 drawn from I-beam wheel 22, through guide wheel 23 and 24, through flywheel ring 26, then, to guide wheel 28, finally closes on I-beam wheel 29.I-beam wheel 12 and I-beam wheel 22 are to be placed in well on the rotor of double twisting device 2.Flywheel ring 16, guide wheel 14 and guide wheel 18 form the rotating part of first monofilament 10.During operation, when flywheel ring 16 rotates a circle, first monofilament 10 obtained the torsion of twice with flywheel ring 16 identical hand of rotation, is for the first time before guide wheel 14, is for the second time after guide wheel 18.We define the torsional direction of monofilament for reversing the hand of rotation of observing rotating part on point along the direction from the round end to the fixed end.When rotating part is clockwise direction, Here it is S twist with the fingers to.For example, the torsion position before guide wheel 14, direction of observation is from round end guide wheel 14, to fixed end guide wheel 13.If the hand of rotation of the hand of rotation of guide wheel 14 and flywheel ring 16 is clwss, Here it is so S twist with the fingers to.Torsion position after guide wheel 18, view direction is from round end guide wheel 18, to fixed end I-beam wheel 19.If the hand of rotation of guide wheel 18 and flywheel ring 16 is clwss, we cry this for S twist with the fingers to.Similarly, flywheel ring 26, guide wheel 24 and guide wheel 28 have formed the rotating part of second monofilament 20.Because the view direction of monofilament 20 is different from monofilament 10, monofilament 10 and monofilament 20 be different sth. made by twisting to.Therefore, the monofilament 10 on I-beam wheel 19 and the monofilament 20 on I-beam wheel 29 are that different directions carries out Plastic Torsion.
Accompanying drawing 1A illustrates the torsional direction of steel monofilament.After the brass coating of steel monofilament surface is removed by chemical method, have the drawing lines on the surface of steel monofilament, it is to consist of tiny groove, this sth. made by twisting that also just discloses the steel monofilament surface to.Amplified, got the part of monofilament 10, vertical and eyes, be placed on a plane, and the drawing lines 25 on monofilament 10 surfaces start to extend to bottom right from upper left.We claim monofilament 10 for S twist with the fingers to.The ground that compares, the drawing lines 25 on monofilament 20 start to extend to lower-left from upper right, we claim monofilament 20 for Z twist with the fingers to.
The technique of accompanying drawing 1 explaination has dual advantage: at first, along with each rotation of flywheel ring, monofilament is subject to is rotation or the torsion of twice.The second, two steel monofilament is respectively also simultaneously by twisting.In contrast to single twister of single unwrapping wire and single take-up, the output of four times is arranged here.
The process results of accompanying drawing 1 is a mode of the utility model take-up: each I-beam wheel only receive a single sth. made by twisting to straight steel monofilament lines.
Accompanying drawing 1B illustrates by along steel monofilament axial torsion and produce the technology and equipment of Plastic Torsion distortion.Similar with shown in accompanying drawing 1 of double twisting device 2, difference is to have removed flywheel ring 16 and the flywheel ring 26 that is connected in two reverse plate 15 edges.In this case, first monofilament 10 drawn from I-beam wheel 12, through guide wheel 13, and guide wheel 14, on one side the edge of reverse plate 15, then, to the edge of another side reverse plate 15, guide wheel 18, finally close on I-beam wheel 19.Second monofilament 20 drawn from I-beam wheel 22, through guide wheel 23, and guide wheel 24, on one side the edge of reverse plate 15, then, to the edge of another side reverse plate 15, guide wheel 28, finally close on I-beam wheel 29.Monofilament 10 and monofilament 20 have passed through similar route like that as shown in Figure 1, and the monofilament 10 closed on I-beam wheel 19 is contrary with the twisting direction that closes at the monofilament 20 on I-beam wheel 29.
Accompanying drawing 1C illustrates by along steel monofilament axial torsion and produce the technology and equipment of Plastic Torsion distortion.Double twisting device 2 is with shown in accompanying drawing 1 being similarly, difference be monofilament 10 be outside from double twisting device 2 for line, close on I-beam wheel 19, drive (showing on figure) by the winding system of double twisting device 2 inside.Because, may only there be a winding system as shown in accompanying drawing 1C in the interior limited space of double twisting device 2.Like this, monofilament 10, by drawing on I-beam wheel 12, through guide wheel 17, guide wheel 18, then arrive flywheel ring 16, then, to guide wheel 14, guide wheel 13, finally closes on I-beam wheel 19.
Accompanying drawing 2 illustrates by steel monofilament axial torsion and obtains the distortion of steel monofilament Plastic Torsion and the steel monofilament of two twisting opposite directions is closed to technique and a device on I-beam wheel.Monofilament 10, monofilament 20 is the same with double twisting device 2 as shown in Figure 1.Difference is that second monofilament 20 is by a series of guide wheel 21 guiding, then with first monofilament 10, closes at together on I-beam wheel 19.Because monofilament 10 and monofilament 20 be different twist with the fingers to, according to the technology of existing WO03/076342A1 document, on I-beam wheel 19 income be abut against together two different twist with the fingers to monofilament.
Process results shown in accompanying drawing 2 is the take-up mode of the steel monofilament that the second of the present utility model is straight: on each I-beam wheel, comprise two different twist with the fingers to monofilament, one be S twist with the fingers to, another root be Z twist with the fingers to.
Accompanying drawing 3 illustrate by steel monofilament axial torsion obtain steel monofilament Plastic Torsion distortion and many identical sth. made by twisting to steel wire close at technique and a device on I-beam wheel.Monofilament 10, monofilament 20 is the same with double twisting device 2 as shown in Figure 1.Difference is the parallel placement of a plurality of double twisting devices 2 and same turning to.All same sth. made by twisting to monofilament 10 guiding and closing on I-beam wheel 19 by guide wheel 31, simultaneously all other sth. made by twisting to monofilament 20 guiding and closing on I-beam wheel 29 by guide wheel 32.According to existing WO03/076342A1 document, monofilament can be nestled up on the income I-beam wheel.Because many identical sth. made by twisting to monofilament can take on an I-beam wheel simultaneously, this has just increased the take-up speed of I-beam wheel, has also saved the space of pay off rack in the bracing ply calendering simultaneously.
Technique shown in accompanying drawing 3 has been explained the 3rd mode of straight steel monofilament take-up of the present utility model: each I-beam wheel has comprised many straight steel monofilament in the same way, all be all S twist with the fingers to or be all Z twist with the fingers to.
Another improvements of this technique and device are (show) a series of guide wheels 21 in the double twisting device 2 of a plurality of parallel placements and accompanying drawing 2 in 3 by reference to the accompanying drawings, nestle up on I-beam wheel 19 that income is different twists with the fingers to the many steel monofilament of alternately arranging.
Accompanying drawing 4 illustrates the cross-sectional plane of the bracing ply strengthened by many parallel straight steel monofilament.Bracing ply 40 is strengthened by many parallel straight steel monofilament 42.Because the sth. made by twisting of not showing monofilament on this figure to, so, according to accompanying drawing 1, the I-beam wheel of the explained hereafter of accompanying drawing 2 and accompanying drawing 3 can be suitable for.
Accompanying drawing 5 illustrates the cross-sectional plane of the bracing ply strengthened by many parallel straight steel monofilament, wherein the steel monofilament with sth. made by twisting to.Bracing ply 50 is strengthened by many parallel straight steel monofilament 52, steel monofilament 52 are identical sth. made by twisting to.Steel monofilament 52 can the I-beam wheel in accompanying drawing 1 obtain, on each I-beam wheel, have an identical sth. made by twisting to steel monofilament 52.In order to save the calendering space, identical sth. made by twisting to steel monofilament 52 also can the I-beam wheel in accompanying drawing 3 obtain, on its I-beam wheel, be many identical sth. made by twisting to steel monofilament 52.
Accompanying drawing 5A illustrates the cross-sectional plane of the bracing ply strengthened by many parallel straight steel monofilament, steel monofilament wherein with sth. made by twisting to, and combine and imbed in bracing ply 50.Bracing ply 50 is to be strengthened by many parallel straight steel monofilament 52, steel monofilament 52 are identical sth. made by twisting to.Every two monofilament 52 are combined, and then in the mode of a combination, imbed in bracing ply 50.Steel monofilament 52 also can the I-beam wheel in accompanying drawing 3 obtain, on I-beam wheel wherein, be many identical sth. made by twisting to steel monofilament 52.
Accompanying drawing 6 illustrates the cross-sectional plane of the bracing ply strengthened by many parallel straight steel monofilament, steel monofilament wherein be different twist with the fingers to, and different the sth. made by twisting imbedded in bracing ply 60 to replacing.Bracing ply 60 is to be strengthened by many parallel straight steel monofilament 62 and steel monofilament 64.Steel monofilament 62 and steel monofilament 64 be different twist with the fingers to, and be to replace to imbed in bracing ply 60.For example, S twist with the fingers to steel monofilament 62 and Z twist with the fingers to steel monofilament 64 so alternately imbed, vice versa.
Accompanying drawing 7 and accompanying drawing 7A illustrate the cross-sectional plane of the bracing ply strengthened by many parallel straight steel monofilament, steel monofilament wherein be different twist with the fingers to, and combine and imbed in bracing ply.Bracing ply 70 is to be strengthened by many parallel straight steel monofilament 72 and steel monofilament 74.Steel monofilament 72 and steel monofilament 74 be different twist with the fingers to, and be grouped together and imbed in bracing ply 70.For example, S twist with the fingers to steel monofilament 72 and a Z twist with the fingers to the such alternate combinations of monofilament 74 together with, vice versa.
Accompanying drawing 8 illustrates the cross-sectional plane of the bracing ply strengthened by many parallel straight steel monofilament, steel monofilament wherein be different twist with the fingers to, and identical sth. made by twisting to the steel combination of monofilaments together, the different sth. made by twisting imbedded in bracing ply to combined and alternatively.Bracing ply 80 is to be strengthened by many parallel straight steel monofilament 82 and steel monofilament 84.Steel monofilament 82 and steel monofilament 84 be different twist with the fingers to, then 82, one groups of steel monofilament 84 of one group of steel monofilament are alternately imbedded in bracing ply 80.For example, one group of S twist with the fingers to steel monofilament 82 and one group of Z twist with the fingers to steel monofilament 84 alternately, vice versa.
Generally speaking, the steel monofilament in the utility model has good straightness, has reduced bow high, at the straightness of the diverse location steel monofilament of total length, is all consistent, keeps stable.This be mainly because the Plastic Torsion eliminating deformation stress difference of steel monofilament surface, highly can remain on one and be applicable in fit closely scope that bracing ply strengthens thereby bend, for example, in being less than the scope of 30mm.Although the difference of the torsional direction of steel monofilament can not cause the quality problems of calender line.Safer in order to guarantee, be recommended in the above-mentioned method of use in calendering and use the steel monofilament, two reasons are arranged: the first, thereby different twist with the fingers to the steel monofilament can eliminate the Steel Wire Surface differential stress impact of cord is avoided to the quality problems in calender line.The second, as shown in accompanying drawing 2 and accompanying drawing 3, many steel monofilament can be grouped together and close on an I-beam wheel, have so effectively saved the space of calendering and the set-up time of equipment, because the I-beam wheel of unwrapping wire has been lacked.Simultaneously, can imbed more steel monofilament on the cord of same widths, thereby increase intensity, because as a rule the space between the steel monofilament is such as accompanying drawing 4,5 on the same group, 6 spaces that are evenly distributed are less.
The bow height is to detect by measuring action the parameter that the steel monofilament departs from straight degree.Accompanying drawing 9 illustrates measurement steel monofilament and bends high method and apparatus.Measuring equipment 90 is by flat board 92, and pin 94 and a scale 96 in the middle of pin 94 at a distance of 300mm on it form, and the line of two pins 94 and scale 96 contact points are " 0 ".The step of measuring comprises: the first, and clip 40cm, is placed on dull and stereotyped 92 as sample 98 to the steel monofilament of 45cm, then allows two pins 94 of sample 98 contacts, last, reads the numerical value of the contact point of sample 98 and scale 96.The bow that numerical value on scale 96 is the steel monofilament is high.Also have other certain situation, because steel monofilament surface differential stress is larger, sample can curve the circle that a diameter is less than 300mm, and in this case, the bow higher position of steel monofilament is greater than 150mm.Another noticeable situation is that, when the I-beam wheel wheel rim from fixing is extracted monofilament out, monofilament just has certain rotation or torsion.When every loose circle 360 is spent, monofilament just has a torsion.So a monofilament torsion of releasing from the dishful I-beam wheel can be less than the monofilament next from soon empty I-beam wheel, because the length of each circle of dishful I-beam wheel is greater than soon empty I-beam wheel.Proposed how to sample and calculate intermediate value and the standard deviation that bow is high in statistical Process Control (SPC) reference manual of the common establishment of Chrys, Ford Motor Company and General Motors Coporation.
The surface distortion angle is the angle consisted of the drawing lines of Steel Wire Surface and steel wire axis.The drawing lines of Steel Wire Surface are the defects produced due to steel wire drawing, the tiny groove that for example after wire drawing, Steel Wire Surface occurs.This parameter of surface distortion angle is in order to weigh the degree of steel monofilament Plastic Torsion distortion.Accompanying drawing 10 illustrates the method for measuring steel monofilament surface twist angle.The first step, the brass coating of removal steel monofilament surface, expose the drawing lines that the steel monofilament surface wets after drawing.Prepare 1 liter take off and plate solvent for removing brass coating, step is as follows, takes 16 gram (NH
4)
2s
2o
8pour in the beaker of a 600ml, then add the softening water of 400ml, then turn in the flask of pouring one 1 liter into, then add 120mlNH
3d=0.91, finally add softening water to full again, fully shakes up.The step of preparing sample is as follows: the steel monofilament of the about 50mm of clip, as sample, adds sample to take off and within the plating solvent 5 minutes, removes brass coating, dry sample; Second step, amplify 500 times of takes with scanning electron microscope and get photo.In photo, in the zone of 400 microns of 500 microns *, sample must be placed between two parties, and the sample edge must be parallel to the photo edge; The 3rd step, carry out the test surfaces twist angle with picture processing software analySIS version5.1copyright1986-2009by Olypus Soft Imaging Solutions GmbH, and accompanying drawing 10 illustrates the measurement at surface distortion angle.Step is as follows: the first step, on photo 100, use function button " Rectangle " to draw an oblong, make line length approximately the line 104 of 400 microns occupy the central area of sample 101, for example, be positioned at the position of sample 101 line of centerss upper and lower 20%.Because line 104 always is parallel to the limit of photo 100, the limit 103 of sample is parallel to the limit of photo 100, so line 104 is parallel to the limit 103 of sample and also is parallel to the line of centers (show) of sample 101; Second step, measure surperficial twist angle, first use function button " 4pointsAngle " to come picture straight line 106 to overlap the drawing lines on sample 101 surfaces, draw again straight line 108 coincidence lines 104, like this, software can be given the value of the acute angle A of 108, outlet 106 and line, and this value is the surface distortion angle of steel monofilament.
The steel monofilament that is generally used for rubber reinforcement has 0.65% carbon content at least, and manganese content is 0.40%-0.70%, and silicon content is 0.15%-0.30%, and maximum sulphur content is 0.03%, and maximum phosphorus content is 0.30%, and all percentums are percent by weight.May also have for example copper of some elements, nickel and chromium, content ranges up to 0.4%.High-intensity steel monofilament has about 0.8%(percent by weight at least) carbon content, 0.78%-0.82% for example.
It is as follows that the manufacturing process of the steel monofilament more than related to starts step from the wire rod with said components: the wire rod dephosphorization, remove the oxide on wire rod surface with machinery or chemical pickling, and then water rinses and is dry.Follow dried wire rod and can carry out a series of dry diameter that draws to reduce, for example, the wire rod from 5.5mm to 8mm, move a suitable mid diameter to.
To first mid diameter d1, for example 3.0mm is to 3.5mm, and the steel monofilament after dry drawing enters first heat treatment, cries quenching.Quench for the first austenitizing, reduce to 600 to 650 degrees centigrade from about 1000 degrees centigrade, complete from austenite to pearlitic transformation.Steel monofilament like this can carry out next step mechanically deform.
Then the steel filament diameter is further drawn by dry, and diameter is from d1 to the second mid diameter d2 of first mid diameter.Second mid diameter d2 is generally 1.0mm to 2.5mm.
When the steel filament diameter, to during second mid diameter d2, the steel monofilament enters second and quenches, i.e. austenitizing is again reduced to 600 to 650 degrees centigrade from 1000 degrees centigrade, completes from austenite to pearlitic transformation.
If the twice that tell front are dry, to draw the overall diameter of rear minimizing be not very large, and also can move d2 to from wire rod together this time.
After second quenches, the steel monofilament plates brass coating usually, first copper facing, more zinc-plated, then intermediate frequency diffuses to form brass coating.
Then the steel monofilament of brass coating carried out to a series of wet operations of drawing.Final product is that a carbon content is greater than the 0.60%(percent by weight), rupture strength is greater than 2000MPa and is applicable to the steel monofilament that rubber reinforcement is used.
The common diameter range of steel monofilament that is applicable to rubber reinforcement is that 0.05mm for example, to 0.60mm, from 0.10mm to 0.40mm.The diameter of monofilament has: 0.10mm, 0.12mm, 0.15mm, 0.175mm, 0.18mm, 0.20mm, 0.22mm, 0.245mm, 0.28mm, 0.30mm, 0.32mm, 0.35mm, 0.38mm, 0.40mm.
According to accompanying drawing 1, the technology and equipment of explaining on accompanying drawing 2 and accompanying drawing 3, thus the steel monofilament can further be out of shape by Plastic Torsion along its axial torsion.
Correlation data high for the bow of steel monofilament in the different process process and the surface distortion angle is as follows:
Four groups are bent high test also to have illustrated that the utility model can very stably be controlled the bow of straight steel monofilament high under different process about straight steel monofilament.
" wet drawing " refers to that the steel monofilament is through the wet operation of drawing, and do not align operation, wherein the bow height of steel monofilament always is greater than 50mm because wet to draw the skin stress of steel monofilament in operation be unsettled, the surface distortion angle be not because the steel monofilament not through the Plastic Torsion distortion." wet draw+straightener " refers to that the steel monofilament is first through the wet operation of drawing, then enter straightener aligning operation, wherein the bow of steel monofilament high at 30mm between 40mm, because the continuous bend between straightener has discharged the skin stress of part, the surface distortion angle is not because the steel monofilament is not out of shape through Plastic Torsion." wet draw+Plastic Torsion distortion " refers to that the steel monofilament is first through the wet operation of drawing, then enter the Plastic Torsion distortion operation of mentioning in the utility model, wherein the bow higher primary school of steel monofilament in 30mm because the Plastic Torsion Deformation control Steel Wire Surface differential stress, the surface distortion angle is 1 to 5 degree.Steel monofilament bow higher primary school in producing according to the utility model is in 30mm, and this steel wire is to be applicable to very much the air-inflation tyre bracing ply strengthen.
One not the straightness of the steel monofilament of twisting depend on the skin stress of steel monofilament.As a rule, wet to draw operation monofilament out to have a very large bow high, for example, because the skin stress of steel monofilament is uneven equidistributed,, the skin stress of one side is different from other one side, and it is different that the steel monofilament is curled into the skin stress that arc curve has also illustrated them.The skin stress that straightener can be eliminated part by continuous bending is poor.Therefore, by the steel monofilament of bow height after " wet drawing " operation of the steel monofilament after " wet draw+straightener " operation.But, the straightener defectiveness.The first, because straightener can not be eliminated all skin stresss, so straightener can not provide the steel monofilament a good straightness.The second, because the skin stress of monofilament changes, so the adjusting of straightener need spend a large amount of manpowers and time, cost is very high.The 3rd, the straightener leveling effect can not keep, and the steel monofilament surface stress in producing because large changes.For example, the part of monofilament is straight, and another part is not but.The utility model is out of shape and comes essence ground to change steel monofilament surface stress by Plastic Torsion, thereby control or eliminate, skin stress is poor reaches an acceptable scope, finally can provide bow higher primary school in the straight steel monofilament of 30mm.In order to keep the straightness that the steel monofilament is good, do not lose other performances that the steel monofilament strengthens tire simultaneously yet, for example, rupture strength and fatigue property also have some restrictions in the Plastic Torsion distortion.The surface distortion angle should be greater than 0.5 degree, more preferably greater than 1 degree, so that the steel monofilament surface has enough Plastic Torsion to be out of shape, comes control surface differential stress and bow higher primary school in 30mm.On the other hand, the surface distortion angle should be less than 15 degree, preferably is less than 5 degree, in order to can not have influence on other performances that the steel monofilament strengthens tire, for example, rupture strength and fatigue property.Therefore, the ratio R of the lay pitch and steel filament diameter, between 7 to 240, is preferably between 20 to 120.Lift an example, a steel monofilament that diameter is 0.30mm carries out the Plastic Torsion distortion on the double twisting device 2 as on accompanying drawing 1, and the lay pitch is 20mm.When the rotor per minute of double twisting device 2 rotation 6000 turns, the take-up speed of steel monofilament is per minute 240m.In contrast to prior art, the utility model has provided in the very easy method of the existing equipment next one and has come High-efficient Production to be applicable to the straight steel monofilament that tire strengthens use.
Claims (14)
1. the straight steel monofilament for the reinforced tire bracing ply, is characterized in that, the bow higher primary school of described straight steel monofilament is in 30 millimeters.
2. according to claim 1 for the straight steel monofilament of reinforced tire bracing ply, it is characterized in that, the bow higher primary school of described straight steel monofilament is in 20 millimeters.
3. according to claim 1 for the straight steel monofilament of reinforced tire bracing ply, it is characterized in that, the high intermediate value of bow of described straight steel monofilament is less than 20 millimeters.
4. according to claim 3 for the straight steel monofilament of reinforced tire bracing ply, it is characterized in that, the high intermediate value of bow of described straight steel monofilament is less than 10 millimeters.
5. according to claim 1 for the straight steel monofilament of reinforced tire bracing ply, it is characterized in that, the high standard deviation of bow of described straight steel monofilament is less than 3 millimeters.
6. according to claim 5 for the straight steel monofilament of reinforced tire bracing ply, it is characterized in that, the high standard deviation of bow of described straight steel monofilament is less than 2 millimeters.
7. according to claim 1 for the straight steel monofilament of reinforced tire bracing ply, it is characterized in that, described steel monofilament carries out Plastic Torsion and produces the surface distortion angle along the axis of himself, and the surface distortion angle of described straight steel monofilament is between 0.5 degree and 15 degree.
8. according to claim 7 for the straight steel monofilament of reinforced tire bracing ply, it is characterized in that, the surface distortion angle of described straight steel monofilament is between 1 degree and 5 degree.
9. a tire belt, is characterized in that, described tire belt is by many parallel being strengthened for the straight steel monofilament of reinforced tire bracing ply as claimed in claim 1.
10. tire belt according to claim 9, is characterized in that, the torsional direction of described many parallel straight steel monofilament is identical, and is embedded in bracing ply.
11. tire belt according to claim 9, is characterized in that, the torsional direction difference of described many parallel straight steel monofilament, and S twist with the fingers to monofilament and Z twist with the fingers to monofilament be arranged alternately with each other and be embedded in bracing ply.
12. tire belt according to claim 9, it is characterized in that, the torsional direction difference of described many parallel straight steel monofilament, S twist with the fingers to monofilament form first group, Z twist with the fingers to monofilament form second group, first group and second group is arranged alternately with each other and is embedded in bracing ply.
13. tire belt according to claim 9, is characterized in that, the torsional direction of described many parallel straight steel monofilament is different and form different groups, every group comprise different twist with the fingers to monofilament.
14. a tire, is characterized in that, described tire comprises at least one tire belt as described as claim 9 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320454285.7U CN203372006U (en) | 2013-07-29 | 2013-07-29 | Straight single steel wire for enhancing tire belted layer, tire belted layer and tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320454285.7U CN203372006U (en) | 2013-07-29 | 2013-07-29 | Straight single steel wire for enhancing tire belted layer, tire belted layer and tire |
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| Publication Number | Publication Date |
|---|---|
| CN203372006U true CN203372006U (en) | 2014-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320454285.7U Expired - Lifetime CN203372006U (en) | 2013-07-29 | 2013-07-29 | Straight single steel wire for enhancing tire belted layer, tire belted layer and tire |
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| Country | Link |
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| CN (1) | CN203372006U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104338873A (en) * | 2013-07-29 | 2015-02-11 | 贝卡尔特公司 | Straight filament used for belted layer |
-
2013
- 2013-07-29 CN CN201320454285.7U patent/CN203372006U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104338873A (en) * | 2013-07-29 | 2015-02-11 | 贝卡尔特公司 | Straight filament used for belted layer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140101 |