CN103612408B - A kind of tire tread layering winding method - Google Patents
A kind of tire tread layering winding method Download PDFInfo
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- CN103612408B CN103612408B CN201310611035.4A CN201310611035A CN103612408B CN 103612408 B CN103612408 B CN 103612408B CN 201310611035 A CN201310611035 A CN 201310611035A CN 103612408 B CN103612408 B CN 103612408B
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Abstract
The invention discloses a kind of tire tread layering winding method, the method comprising the steps of: in wrapping machine moulding process, tyre surface is carried out to layering, according to layered approach, green tyre is carried out to adhesive tape winding. The step of layered approach is: select the flex point on tire tread, calculate the coordinate of each flex point in coordinate system; For the flex point between limit, left side and right edge, ask for the Along ent on each flex point vertical coordinate line, the Along ent that connects every one deck is its demixing point, for limit, left side and right edge, to do along the Along ent on side peak vertical coordinate line the horizontal line that is parallel to X-axis, these horizontal lines are same as demixing point with the intersection point of limit, left side, right edge. Demixing point is write in array successively according to the position of profile, connect the point on every one deck in array and complete tread separation. After layering of the present invention, the thickness of every layer is all more even, and the pitch that is wound around model also can be more even, is conducive to reduce the bubble producing in winding process.
Description
Technical field
The present invention relates to tyre production research field, particularly a kind of tire tread layering winding method.
Background technology
Tire tread is Wrapping formed is divided into two stages, and one is the moulding process stage, and this stage is by sulphur notThe adhesive tape of changing is wound on green tyre by winding technology, now on tyre surface, there is no the decorative pattern shape of sudden change,But similar trapezoidal grading profile; Another is the sulfuration process stage, and this stage is to add through moulding processSemi-finished product after work put into mould and vulcanize, due to this time tread rubber still there is mobility,Therefore produce tyre tread by the extruding of mould.
Tread wrapping has a long history as the technology of tire building, and application number is200910041591.6 Chinese invention patent a kind of controlling method for wrapping surface of tire is disclosed, the method isTo the emulation of tread wrapping process simulation, wrapping machine head run trace and speed are adjusted in real time simultaneouslyWhole, thus the tread wrapping quality of tire improved. But in practical operation, be wound around out the tyre surface of designShape, many times can not only be wound around one deck in the moulding process stage and just deal with problems.
Because adhesive tape thickness, width and overlap are very large on winding mass and shape impact, body when adhesive tape is too thickLong-pending error is larger, and exhaust effect is bad; Adhesive tape width is larger, is wound around efficiency higher, but more waywardQuality and shape, therefore the thickness of adhesive tape is generally 5 millimeter, width can not exceed 100 millimeters at most,And carry out in tire winding process actual, the thickness that many times needs to be wound around tyre surface is out 100 veryTo being 200 millimeters of ranks, therefore also just very necessary to the layering winding of tyre surface, layering is got, to twiningOf great advantage around effect, and can greatly improve the fidelity of emulation and real effect. But it is not still existing at presentThere is technology to study this.
Summary of the invention
Main purpose of the present invention is that the shortcoming that overcomes prior art, with not enough, provides a kind of tire tread to divideLayer winding method carries out layering to tyre surface in wrapping machine moulding process, can make after layering the Thickness Ratio of every layerMore even, and then it is more even to make to be finally wound around the pitch ratio of model, thus can reduce in actual winding processThe bubble producing, improves the quality being wound around.
Object of the present invention realizes by following technical scheme: a kind of tire tread layering winding method, stepRapid as follows:
A, in wrapping machine moulding process, tyre surface is carried out to layering, layered approach is as follows:
(1) set up one taking tire tread perpendicular bisector as Y-axis, the coordinate system that tread base is X-axis;
(2) select the flex point on tire tread, flex point comprises two ends end points, and abscissa is that positive end points is theOne end points, abscissa is that negative end points is the second end points; According to flex point, on tyre surface outer contour, position is successivelyWrite an array, and calculate the coordinate of each flex point in coordinate system;
(3) search obtains the point that ordinate is the highest, and from these points, chooses the maximum and abscissa of abscissaLittle point, is defined as respectively the first separation and the second separation;
(4), for the first separation, the second separation and the flex point between the two, sit vertical each flex pointMark is divided into N equal portions according to divided number of plies N, records N-1 coordinate points on its vertical coordinate line, along Y-axisDirection is labeled as Q successivelyi,j, the label that i is this flex point, j represents that on this corresponding vertical coordinate line of flex point institute, j is individualCoordinate points, j 1～(N-1) between; Connect successively all flex points between the first separation and the second separationJ coordinate points on corresponding vertical coordinate line, obtains the mid portion stratification line of tire tread j layer;
Between the right edge between the first separation and the first end points and the second separation and the second end pointsLimit, left side, do along N-1 coordinate points on the first separation vertical coordinate line the horizontal line that is parallel to X-axis,Record the intersection point of these horizontal lines and limit, left side, right edge, the end points using these intersecting point coordinates as stratification lineBe inserted in array according to position on tyre surface outer contour; Connect the point on every one deck in array and complete tireFace layering;
B, according to above-mentioned layered approach, green tyre is carried out to adhesive tape winding.
Preferably, for the flex point between the first separation, the second separation, if increase between each flex pointA dry data point, is divided into N equal portions according to divided number of plies N by the ordinate of data point, on its vertical coordinate lineJ coordinate points, is designated as the point on the stratification line of tire tread j layer equally. Thereby by determining a multiple spot left sideLimit, adds the precision in man-hour.
Compared with prior art, tool has the following advantages and beneficial effect in the present invention:
1, the inventive method is carried out layering to tyre surface in wrapping machine moulding process, by tire tread in thickness sideUpwards divide equally, thereby make after layering the thickness of every layer all more even, thereby be finally wound around the spiral shell of modelDistance also can be more even, and this uniform pitch is distributed with to be beneficial to and greatly reduces the bubble producing in winding process.
2, in the present invention, be the situation of hypotenuse for tire tread, algorithm is further improved, propose along hypotenuseN-1 coordinate points on upper peak vertical coordinate line done the horizontal line that is parallel to X-axis, by horizontal line and left sideThe intersection point of limit, right edge is as the end points of stratification line, thus the effect that both sides bound edge is obtained after reality is wound aroundFruit can be more identical with design.
Brief description of the drawings
Fig. 1 is tire tread cross section outline schematic diagram in the present embodiment 1;
Fig. 2 adopts the layering result schematic diagram that layered approach obtains described in embodiment 1.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but enforcement side of the present inventionFormula is not limited to this.
Embodiment 1
As shown in Figure 1, for the present embodiment is wanted the tire tread cross section outline schematic diagram of layering, from figureAnd known in prior art, tire tread profile is mainly made up of lines, is middle symmetrical structure, and L is leftSide, R is right edge, lines slope is likely for just, also likely for negative.
A kind of tire tread layering of the present embodiment winding method carries out layering to image similar to Figure 1, stepRapid as follows:
A, in wrapping machine moulding process, tyre surface is carried out to layering;
B, according to above-mentioned layered approach, green tyre is carried out to adhesive tape winding.
The step of layered approach described in steps A is as follows:
(1) set up one taking tire tread perpendicular bisector as Y-axis, the coordinate system that tread base is X-axis; As Fig. 2Shown in.
(2) select the flex point on tire tread, flex point comprises two ends end points, and abscissa is that positive end points is theOne end points, abscissa is that negative end points is the second end points; According to flex point, on tyre surface outer contour, position is successivelyWrite an array, and calculate the coordinate of each flex point in coordinate system. For Fig. 2, flex point on tire treadFor Qi, i is between 1-9. The first end points is Q1, the second end points is Q9。
(3) search obtains the point that ordinate is the highest, and from these points, chooses the maximum and abscissa of abscissaLittle point, is defined as respectively the first separation and the second separation. For the present embodiment, ordinate is the highestPoint is Q3～Q4、Q6～Q7Between point, wherein the first separation is that the point of abscissa maximum is a Q3, theTwo separations are that the point of abscissa minimum is a Q7。
(4) definite three parts that are divided into of stratification line, Part I is between the first separation, the second separationDetermining of stratification line, Part II is that the right edge between the first separation and the first end points is punished layer line reallyFixed, Part III is that determining of layer line punished on the limit, left side between the second separation and the second end points, specifically trueDetermine process as follows.
For determining of Part I stratification line, for the first separation Q3, the second separation Q7And the twoBetween flex point, each flex point ordinate is divided into N equal portions according to divided number of plies N, record its ordinateN-1 on a line coordinate points, is labeled as Q successively along Y directioni,j, the label that i is this flex point, j represents thisJ coordinate points on the corresponding vertical coordinate line of flex point institute, j 1～(N-1) between; Connect successively the first boundaryJ coordinate points on the corresponding vertical coordinate lines of all flex points between point and the second separation, obtains tire tread theThe mid portion stratification line of j layer. With the Q in Fig. 24For example, it is divided into 3 parts according to ordinate, itsOn vertical coordinate line, there are two coordinate points, are Q41、Q42, the correspondence that can obtain each middle flex point with this is indulged and is satCoordinate points on graticule. Connect Q31、Q41、……Q71, be this part ground floor stratification line, connect Q32、Q42、……Q72, be this part second layer stratification line.
For determining of Part II stratification line, do along N-1 coordinate points on the first separation vertical coordinate lineBe parallel to the horizontal line of X-axis, record the intersection point of these horizontal lines and limit, left side, right edge, by these intersection pointsCoordinate is inserted in array according to position on tyre surface outer contour as the end points of stratification line. Taking Fig. 2 as example,Get two coordinate points Q on the first separation vertical coordinate line31、Q32, do along two somes the level that is parallel to X-axisLine, two horizontal lines and right edge intersect at 2 points, are respectively L2、L1, by L2、L1Be inserted in array,Put L1Be inserted into (Q1、Q2) between, L2Be inserted into (Q2、Q3) between.
For determining of Part III stratification line, as one section of description above, obtain two intersection point L3、L4, by pointBe inserted in array, put L3Be inserted into (Q7、Q8) between, L4Be inserted into (Q8、Q9) between.
Thereby for ground floor, its stratification line is a L2、Q31、Q41、……Q71、L3Connecting line,For the second layer, its stratification line is a L2、Q31、Q41、……Q71、L3、Q8、L4、Q72、……Q42、Q32、L1、Q2Connecting line, for the 3rd layer, its stratification line is L4、Q72、……Q42、Q32、L1、Q1、Q9Connecting line, thereby complete layering.
In the time of practical operation, in order to increase the precision that adds man-hour, between the flex point that can grow at outline line, increaseAdd several data points, for example, increase in the drawings A1～A4These 4 points, with A1For example, according to divided layerNumber is divided into 3 equal portions by its ordinate, the some A on its vertical coordinate line11、A12Same as the point on stratification line.
Above-described embodiment is preferably embodiment of the present invention, but embodiments of the present invention are not subject to above-mentioned realityExecute routine restriction, other any do not deviate from the change done under Spirit Essence of the present invention and principle, modification,Substitute, combine, simplify, all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (2)
1. a tire tread layering winding method, is characterized in that,
A, in wrapping machine moulding process, tyre surface is carried out to layering, layered approach is as follows:
(1) set up one taking tire tread perpendicular bisector as Y-axis, the coordinate system that tread base is X-axis;
(2) select the flex point on tire tread, flex point comprises two ends end points, and abscissa is that positive end points is theOne end points, abscissa is that negative end points is the second end points; According to flex point, on tyre surface outer contour, position is successivelyWrite an array, and calculate the coordinate of each flex point in coordinate system;
(3) search obtains the point that ordinate is the highest, and from these points, chooses the maximum and abscissa of abscissaLittle point, is defined as respectively the first separation and the second separation;
(4), for the first separation, the second separation and the flex point between the two, sit vertical each flex pointMark is divided into N equal portions according to divided number of plies N, records N-1 coordinate points on its vertical coordinate line, along Y-axisDirection is labeled as Q successivelyi,j, the label that i is this flex point, j represents that on this corresponding vertical coordinate line of flex point institute, j is individualCoordinate points, j 1～(N-1) between; Connect successively all flex points between the first separation and the second separationJ coordinate points on corresponding vertical coordinate line, obtains the mid portion stratification line of tire tread j layer;
Between the right edge between the first separation and the first end points and the second separation and the second end pointsLimit, left side, do along N-1 coordinate points on the first separation vertical coordinate line the horizontal line that is parallel to X-axis,Record the intersection point of these horizontal lines and limit, left side, right edge, the end points using these intersecting point coordinates as stratification lineBe inserted in array according to position on tyre surface outer contour; Connect the point on every one deck in array and complete tireFace layering;
B, according to above-mentioned layered approach, green tyre is carried out to adhesive tape winding.
2. tire tread layering winding method according to claim 1, is characterized in that, for firstFlex point between separation, the second separation increases several data points between each flex point, according to divideThe number of plies N ordinate of data point is divided into N equal portions, j coordinate points on its vertical coordinate line, equally noteFor the point on the stratification line of tire tread j layer.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105437585B (en) * | 2014-09-28 | 2018-01-19 | 青岛软控机电工程有限公司 | A kind of tyre wrapping machine control method |
| CN104960217B (en) * | 2015-05-18 | 2017-03-29 | 天津赛象科技股份有限公司 | For the adhesive tape stacking simulation method of tread wrapping |
| CN105034424B (en) * | 2015-08-19 | 2017-03-08 | 桂林方菱信息科技有限公司 | A kind of tire tread profiling winding method based on pixel method |
| CN109622992B (en) * | 2018-11-17 | 2020-08-04 | 宁夏共享精密加工有限公司 | Method for machining deep groove of revolving body |
| CN113927932B (en) * | 2021-12-16 | 2022-03-04 | 赛轮(东营)轮胎股份有限公司 | Layered winding method for tire tread |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4145740A (en) * | 1977-01-21 | 1979-03-20 | Tri-N Associates, Inc. | Filament winding apparatus |
| CN101407109A (en) * | 2008-11-28 | 2009-04-15 | 昊华南方(桂林)橡胶有限责任公司 | Tyre first stage winding building control system |
| CN101625557B (en) * | 2009-08-03 | 2011-08-17 | 广州华工百川科技股份有限公司 | Controlling method for wrapping surface of tire |
| CN203236975U (en) * | 2013-04-19 | 2013-10-16 | 山东亿诺工程轮胎有限公司 | Novel tread layered structure |
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