CN111709100B - Method for designing appearance parameters of vulcanized capsules - Google Patents
Method for designing appearance parameters of vulcanized capsules Download PDFInfo
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Abstract
The application discloses a design method of appearance parameters of a vulcanization capsule, which is characterized in that the numerical values of the outer diameter of the capsule and the outer contour perimeter of the capsule are calculated based on the known size of a capsule clamp and the parameters of a tyre to be processed, and then the appearance contour of the capsule is drawn according to the obtained outer diameter of the capsule and the outer contour perimeter of the capsule. The design is carried out according to the inner outline of the tire completely, the vulcanized capsule prepared by the design method can be perfectly matched with the inner shape of the tire, bad quality defects such as capsule pleating and air nesting in the production of the tire can be effectively reduced, uncertain factors caused by traditional experience value design are avoided, the method is suitable for the arrangement of tire capsules of various specifications and models, the capsule shape and the specification designed for the same model of tire are uniform, the batch production is convenient, the accuracy of the design of the capsule shape parameters is effectively improved, and the service life of the vulcanized capsule is prolonged.
Description
Technical Field
The application belongs to the technical field of tire curing bladder preparation methods, and particularly relates to a method for designing appearance parameters of a curing bladder.
Background
The external dimensions of the tire bladder are critical to the production efficiency, quality, etc. of the tire. The unreasonable overall dimension design easily leads to multiple tire bad emergence. The appearance size is too large, and defects such as capsule pleating, corner clamping and the like are easy to occur after the tire is vulcanized; the design of the external dimension is too small, and the bad air in the tire cavity is easy to occur in the tire vulcanization. The appearance size of the vulcanized capsule is designed properly, so that the occurrence of the defects can be effectively prevented. The conventional tire curing bladder appearance design at present mainly relies on the experience of engineers, and the section perimeter and the outer diameter of the bladder are designed according to the specification and the size. With the vigorous development of the automobile industry, the tire industry has developed more and more tire models, and the requirements of modern tire production cannot be met by means of traditional experience. The traditional tire curing bladder has the phenomena of low service life and high tire reject ratio under the new form.
Accordingly, the prior art is still further developed and improved.
Disclosure of Invention
In order to solve the above problems, a design method for appearance parameters of a curing bladder is proposed. The application provides the following technical scheme:
the design method of the appearance parameters of the vulcanization bladder calculates the numerical value of the outer diameter of the bladder and the perimeter of the outer contour of the bladder based on the known dimensions of the bladder clamp and the parameters of the tire to be processed, and specifically comprises the following steps:
determining the circumferential stretching rate and the radial stretching rate, the clamping edge width, the clamping edge inner diameter and the clamping edge height of the capsule according to the known capsule clamp size;
determining the outer diameter, tread thickness, inner contour circumference, engagement diameter, engagement width and rolling axis of the tire according to the known parameters of the tire to be processed;
the formula is as follows:
bladder outer diameter = tire inner diameter/radial stretch = (tire outer diameter-2 tread thickness)/radial stretch;
bladder outer contour circumference= (tire inner contour circumference + rim width x 2)/circumferential stretch ratio= (tire inner contour circumference + diameter-grip inner diameter-2 x grip width)/circumferential stretch ratio;
and drawing the outline of the capsule according to the obtained outer diameter of the capsule and the perimeter of the outer outline of the capsule.
Further, the circumferential stretch ratio is equal to the radial stretch ratio.
Further, the specific process of drawing the outline of the capsule is as follows:
(1) Taking the intersection point of the vertical central line of the tire and the inner contour of the tire as a starting point P 0 In P 0 Drawing a circle with the radius r=L×α as the center of a circle, wherein the intersection point of the circle and the inner contour of the tire is P 1 Then use P 1 Drawing a circle with radius r=L×α as the center of a circle, and taking the intersection point of the circle and the inner contour of the tire as P 2 And so on to obtain P 3 、P 4 …P n Wherein the saidThe circumferential stretching rate and the radial stretching rate are alpha, and the fixed interval length L on the capsule is set, so that the length of the capsule corresponding to the inner contour of the tire after the capsule is expanded is L x alpha;
(2) Drawing origin L by taking maximum diameter point of capsule crown as capsule contour 0 ，L 0 To P 0 Distance m= (tire inner diameter-bladder outer diameter)/2, in L 0 Drawing a circle with a radius L for the circle center;
(3) With P 1 For the starting point, the point D is obtained by perpendicularly projecting the tire rolling axis 1 At this time P 1 To D 1 Is vertically moved down by a distance of N, D 1 Drawing a circle with the radius r=n/alpha as the center of the circle, intersecting the circle drawn in the previous step at a point L 1 And so on to obtain L 2 、L 3 、L 4 …L n Until the intersection point is no longer generated between the two circles;
(4) Determining the position of the clamping edge according to the clamping edge radius Db and the contact width Wb by taking the rolling axis of the tire as a reference;
(5) Determining a capsule crown curve;
(6) Adjusting the position of the clamping edge to enable the perimeter of the outer outline of the capsule to reach a preset value;
(7) Determining a capsule thickness distribution;
(8) And connecting the capsule clamping edge with the capsule crown curve by using a smooth curve to form the appearance structure of the capsule.
Further, the fixed interval length L on the capsule was set to 10mm.
Further, the method for determining the position of the clamping edge according to the clamping edge radius Db and the bonding width Wb comprises the following steps: drawing a horizontal line from a half of the inner diameter Db of the clamping edge, intersecting the horizontal line with the central line of the tire at a point O, taking the O as a starting point, taking an end point W at a position which is 1.5 times of the outward distance of the clamping width Wb along the horizontal line, taking the W point as an edge position of the clamping edge, then vertically drawing the height A of the clamping edge upwards by taking the W point as the starting point, horizontally drawing the width B of the clamping edge to the right by taking the W point as the starting point, and supplementing the rectangle to obtain a position diagram of the cross section size of the clamping edge.
Further, the method for determining the capsule crown curve comprises the following steps: will L 1 、L 2 、L 3 、L 4 、……、L n Point hook connection, and select 3 points L 1 、L (1+n)/2 、L n And determining an arc.
Further, the method for adjusting the clamping edge position to enable the outer contour perimeter of the capsule to reach a preset value comprises the following steps: and determining a difference E between the outer contour circumference of the capsule and a preset value, and moving the clamping edge position outwards by E by beta distance, wherein beta is a known coefficient related to the tire flat ratio.
Further, the method for determining the capsule thickness distribution comprises the following steps: and smoothly transiting and connecting according to the determined thickness of the sub-mouth part and the thickness of the capsule crown part to obtain the thickness of the capsule connecting part.
Further, the thickness of the sub-mouth part is 10mm from the clamping edge, and the internal thickness is fixed to be TBR-15.5mm/PCR-10mm.
Further, the thickness of the capsule crown is within the range of PCR-10mm/TBR-20mm from the capsule center, and the thickness is fixed to be TBR-6mm/PCR-4.5mm.
The beneficial effects are that:
the design is carried out according to the inner outline of the tire completely, the vulcanized capsule prepared by the design method can be perfectly matched with the inner shape of the tire, bad quality defects such as capsule pleating and air nesting in the production of the tire can be effectively reduced, uncertain factors caused by traditional experience value design are avoided, the method is suitable for the arrangement of tire capsules of various specifications and models, the capsule shape and the specification designed for the same model of tire are uniform, the batch production is convenient, the accuracy of the design of the capsule shape parameters is effectively improved, and the service life of the vulcanized capsule is prolonged.
Drawings
FIG. 1 is a schematic cross-sectional view of a bladder clamp, bladder and tire connection structure in accordance with an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view of a capsule structure in accordance with an embodiment of the present application;
FIG. 3 is a schematic cross-sectional view of a tire structure in accordance with an embodiment of the present application;
FIG. 4 is a first schematic drawing of a capsule structure in accordance with an embodiment of the present application;
FIG. 5 is a second schematic drawing of the capsule structure in an embodiment of the present application;
FIG. 6 is a third schematic drawing of a capsule structure in accordance with an embodiment of the present application;
fig. 7 is a fourth drawing schematically illustrating the capsule structure in an embodiment of the present application.
Detailed Description
In order to make the technical solution of the present application better understood by those skilled in the art, the technical solution of the present application will be clearly and completely described in the following with reference to the accompanying drawings, and based on the embodiments of the present application, other similar embodiments obtained by those skilled in the art without making any inventive effort should be included in the scope of protection of the present application. In addition, directional words such as "upper", "lower", "left", "right", and the like, as used in the following embodiments are merely directions with reference to the drawings, and thus, the directional words used are intended to illustrate, not to limit, the application.
As shown in fig. 1, the capsule clamp 4 clamps the clamping edge 3 of the capsule 2, the capsule 2 is inflated to form the inner outline of the tire, and the tire is produced based on the inner outline as a template, as shown in fig. 2, the capsule 2 is a circular ring-shaped capsule section schematic diagram after inflation, and comprises the clamping edge 3 positioned at the inner ring of the capsule, a capsule crown 6 positioned at the outer ring of the capsule and a capsule connecting part connecting the clamping edge 3 and the capsule crown 6, and a sub-opening 5 is further arranged between the clamping edge 3 and the capsule connecting part; as shown in fig. 3, the tire 1 is a toroidal tire matching the bladder 2, and the bladder size is directly reflected on the tire inner contour circumference, i.e., the bladder outer contour circumference is related to the tire inner contour circumference parameter.
As shown in fig. 4-7, a method for designing appearance parameters of a curing bladder calculates the values of the outer diameter of the bladder and the perimeter of the outer contour of the bladder based on the known dimensions of the bladder clamp and the parameters of the tire to be processed, specifically:
determining the circumferential stretching rate and the radial stretching rate of the capsule, the clamping edge width B, the clamping edge inner diameter Db and the clamping edge height A according to the known capsule clamp size; wherein the circumferential stretch is equal to the radial stretch α.
Determining the outer diameter SB, tread thickness C, inner contour perimeter Lb, contact diameter D, contact width Wb and rolling axis G of the tire according to known parameters of the tire to be processed;
the formula is as follows:
bladder outer diameter = tire inner diameter/radial stretch = (tire outer diameter-2 tread thickness)/radial stretch;
bladder outer contour circumference= (tire inner contour circumference + rim width x 2)/circumferential stretch ratio= (tire inner contour circumference + diameter-grip inner diameter-2 x grip width)/circumferential stretch ratio;
and drawing the outline of the capsule according to the obtained outer diameter of the capsule and the perimeter of the outer outline of the capsule.
Further, the specific process of drawing the outline of the capsule is as follows:
(1) Taking the intersection point of the vertical central line of the tire and the inner contour of the tire as a starting point P 0 In P 0 Drawing a circle with the radius r=L×α as the center of a circle, wherein the intersection point of the circle and the inner contour of the tire is P 1 Then use P 1 Drawing a circle with radius r=L×α as the center of a circle, and taking the intersection point of the circle and the inner contour of the tire as P 2 And so on to obtain P 3 、P 4 …P n The circumferential stretching rate and the radial stretching rate are alpha, and the length L of a fixed interval on the capsule is set, so that the length corresponding to the inner contour of the tire after the capsule is expanded is L x alpha; further, the fixed interval length L on the capsule was set to 10mm.
(2) Drawing origin L by taking maximum diameter point of capsule crown as capsule contour 0 ，L 0 To P 0 Distance m= (tire inner diameter-bladder outer diameter)/2, in L 0 Drawing a circle with a radius L as the center of the circle, L 0 Is the maximum diameter point of the capsule crown;
(3) With P 1 For the starting point, the point D is obtained by perpendicularly projecting the tire rolling axis 1 At this time P 1 To D 1 Is vertically moved down by a distance of N, D 1 Drawing a circle according to the radius r=N/alpha as a circle center, and intersecting the circle drawn in the previous step at a point L 1 And so on to obtain L 2 、L 3 、……、L n Until no intersection point is generated between the two circles, wherein the radius is calculated according to reverse derivation according to radial stretching alpha of the capsule;
(4) Determining the position of the clamping edge according to the clamping edge radius Db and the contact width Wb by taking the rolling axis of the tire as a reference; further, the method for determining the position of the clamping edge according to the clamping edge radius Db and the bonding width Wb comprises the following steps: the capsule can be regarded as a circular ring when being drawn at a position which is a half of the inner diameter Db of the clamping edge, the capsule is used for determining the position of the circular ring, the vertical coordinate of the clamping edge is determined, the horizontal line intersects with the central line F of the tire at a point O, the point W is taken as the edge position of the clamping edge at the position which is 1.5 times of the contact width Wb along the horizontal line outwards by taking O as the starting point, then the point W is taken as the starting point to vertically draw the height A of the clamping edge, the point W is taken as the starting point to horizontally draw the width B of the clamping edge to the right, and the rectangle is supplemented to obtain the cross section size position diagram of the clamping edge. The rim is commonly called as a rim, is a part for installing and supporting the tire on the periphery of the wheel, and forms the wheel with the spoke, and the rim width corresponds to the fitting width Wb of the tire on the tire.
(5) Determining a capsule crown curve; further, the method for determining the capsule crown curve comprises the following steps: will L 1 、L 2 、L 3 、L 4 、……、L n Point hook connection, and select 3 points L 1 、L (1+n)/2 、L n And determining the circular arc as the capsule crown curve.
(6) Adjusting the position of the clamping edge to enable the perimeter of the outer outline of the capsule to reach a preset value; further, the method for adjusting the clamping edge position to enable the outer contour perimeter of the capsule to reach a preset value comprises the following steps: and determining a difference E between the outer contour circumference of the capsule and a preset value, and moving the clamping edge position outwards by E times beta distance, wherein beta is a known coefficient related to the tire flattening ratio, and the larger the flattening ratio is, the larger the beta is.
(7) Determining a capsule thickness distribution; further, the method for determining the capsule thickness distribution comprises the following steps: and smoothly transiting and connecting according to the determined thickness of the sub-mouth part 5 and the thickness of the capsule crown part 6 to obtain the thickness of the capsule connecting part. The thickness of the middle part is smoothly transited to avoid stress concentration, so that the capsule is damaged early.
(8) And connecting the capsule clamping edge with the capsule crown curve by using a smooth curve to form the appearance structure of the capsule.
Further, the thickness of the sub-mouth part is 10mm from the clamping edge, and the internal thickness is fixed to be TBR-15.5mm/PCR-10mm. The sub-opening part is the root part of the clamping edge, and the deflection position of the capsule when stretching up and down is within 10mm according to the industry experience value, and the deflection of the position outside 10mm is small, so the thickness of the position needs to be limited, and TBR-15.5mm/PCR-10mm is the industry reference value thickness.
Further, the thickness of the capsule crown is within the range of PCR-10mm/TBR-20mm from the capsule center, and the thickness is fixed to be TBR-6mm/PCR-4.5mm. The thickness of the PCR-10mm/TBR-20mm and TBR-6mm/PCR-4.5mm are industry reference values.
Detailed description of the preferred embodiments
The utility model provides a design method of appearance parameters of a vulcanization bladder, which is based on the known dimensions of a bladder clamp and parameters of a tire to be processed to calculate the numerical values of the outer diameter of the bladder and the perimeter of the outer contour of the bladder, taking 245/70R16 tire specification as an example, and specifically comprises the following steps:
each factory or company typically has its own bladder clamp size standard, and typically the same size standard bladder clamp is used for the production of tires of the same size class. According to the capsule clamp size actually used in a factory, determining the circumferential stretching rate and the radial stretching rate alpha of the capsule to be 1.2, the clamping edge width B to be 15mm, the clamping edge inner diameter Db to be 285mm and the clamping edge height A to be 26mm;
determining the tire outer diameter SB of 772mm, the tread thickness C of 25.5mm, the tire inner contour perimeter Lb of 480mm, the fit diameter D of 406mm, the fit width Wb of 178mm and the tire rolling axis G according to the known tire parameters to be processed;
the tread thickness is from the material profile of this specification, the tire inner profile circumference can be obtained from the material profile, the fit diameter is an important parameter for the tire mold design, the fit diameter of the same grade product is unique, here of known value, common in the industry, and the rim inner diameter is an important parameter when fitting a bladder clamp, which is derived from the bladder clamp dimensions.
The formula is as follows:
bladder outer diameter = tire inner diameter/radial stretch = (tire outer diameter-2 tread thickness)/radial stretch = (772-2 x 25.5)/1.2 = 600;
bladder outer contour circumference= (tire inner contour circumference + rim width x 2)/circumferential stretch ratio= (tire inner contour circumference + blend diameter-rim inner diameter-2 x rim width)/circumferential stretch ratio= (480+406-285-2 x 15)/1.2 = 476;
the obtained capsule outer diameter DB value is 600mm, and the capsule outer contour perimeter LB value is 476mm;
and drawing the outline of the capsule according to the obtained capsule outer diameter DB and the capsule outer outline perimeter LB.
The circumferential stretch is equal to the radial stretch.
The specific process for drawing the outline of the capsule comprises the following steps:
(1) Taking the intersection point of the vertical central line of the tire and the inner contour of the tire as a starting point P 0 In P 0 Drawing a circle with radius r=l×α=10×1.2=12 mm as a circle center, wherein an intersection point with the inner contour of the tire is P 1 Then use P 1 Drawing a circle with radius r=l×α=10×1.2=12 mm as a circle center, and intersecting with the inner contour of the tire as P 2 And so on to obtain P 3 、P 4 …P n Wherein, the circumferential stretching ratio and the radial stretching ratio are both alpha=1.2, and the fixed interval length L=10mm on the capsule is set, so that the length corresponding to the inner contour of the tire after the capsule is inflated is L=alpha=10x1.2=12mm; the 12mm wide points of the inner profile of the tire correspond to a bladder of 10mm width.
(2) Drawing origin L by taking maximum diameter point of capsule crown as capsule contour 0 ，L 0 To P 0 Distance m= (tire inner diameter-bladder outer diameter)/2=60.5 mm, in L 0 Drawing a circle with a radius of L=10mm for the circle center, L 0 Is the maximum diameter point of the capsule crown;
(3) With P 1 For the starting point, the point D is obtained by perpendicularly projecting the tire rolling axis 1 At this time P 1 To D 1 Is vertically moved down by a distance of N, D 1 Drawing a circle according to the radius r=N/alpha as a circle center, and intersecting the circle drawn in the previous step at a point L 1 And so on to obtain L 2 、L 3 、……、L n Until no intersection point is generated between the two circles, wherein the radius is calculated according to reverse derivation according to radial stretching alpha of the capsule;
(4) Determining the position of the clamping edge according to the clamping edge radius Db and the contact width Wb by taking the rolling axis of the tire as a reference; the method for determining the clamping edge position according to the clamping edge radius Db and the bonding width Wb comprises the following steps: the capsule can be regarded as a circular ring, the position of the circular ring is determined, the ordinate of the clamping edge is determined, the horizontal line intersects with the center line F of the tire at a point O, the point W is taken as the edge position of the clamping edge at the position which is 1.5 times of the outward closing width Wb of the horizontal line, namely, the position which is at the 267mm from the center line F of the tire, the point W is taken as the edge position of the clamping edge, the clamping edge height A is vertically drawn upwards by taking the point W as the starting point, the clamping edge width B is drawn horizontally to the right by taking the point W as the starting point, namely, a rectangle with the width of 15mm and the height of 26mm is drawn, and the rectangle is supplemented to obtain the position diagram of the section size of the clamping edge. The rim is commonly called as a rim, is a part for installing and supporting the tire on the periphery of the wheel, and forms the wheel with the spoke, and the rim width corresponds to the fitting width Wb of the tire on the tire.
(5) Determining a capsule crown curve; the method for determining the capsule crown curve comprises the following steps: will L 1 、L 2 、L 3 、L 4 、……、L n Point hook connection, and select 3 points L 1 、L (1+n)/2 、L n And determining the circular arc as the capsule crown curve.
(6) Adjusting the position of the clamping edge to enable the perimeter of the outer outline of the capsule to reach a preset value; the method for adjusting the clamping edge position to enable the perimeter of the outer outline of the capsule to reach a preset value comprises the following steps: and determining a difference E between the outer contour circumference of the capsule and a preset value, and moving the clamping edge position outwards by E times beta distance, wherein beta is a known coefficient related to the tire flattening ratio, and the larger the flattening ratio is, the larger the beta is.
(7) Determining a capsule thickness distribution; the method for determining the capsule thickness distribution comprises the following steps: and smoothly transiting and connecting according to the determined thickness of the sub-mouth part and the thickness of the capsule crown part to obtain the thickness of the capsule connecting part. The thickness of the middle part is smoothly transited to avoid stress concentration, so that the capsule is damaged early.
(8) And connecting the capsule clamping edge with the capsule crown curve by using a smooth curve to form the appearance structure of the capsule.
The thickness of the sub-mouth part is 10mm from the clamping edge, and the inner thickness is fixed to be TBR-15.5mm/PCR-10mm. The sub-opening part is the root part of the clamping edge, and the deflection position of the capsule when stretching up and down is within 10mm according to the industry experience value, and the deflection of the position outside 10mm is small, so the thickness of the position needs to be limited, and TBR-15.5mm/PCR-10mm is the industry reference value thickness.
The thickness of the capsule crown is within the range of PCR-10mm/TBR-20mm from the capsule center, and the thickness is fixed to be TBR-6mm/PCR-4.5mm. The thickness of the PCR-10mm/TBR-20mm and TBR-6mm/PCR-4.5mm are industry reference values.
According to the method, the inner shape of the tire can be perfectly matched, bad quality defects such as bladder pleating and air nesting in tire production can be effectively reduced, uncertain factors caused by traditional experience value design are avoided, the method is suitable for tire bladder arrangement of various specifications and models, the shapes and the specifications of the bladder designed for the same model of tire are uniform, batch production is convenient, the accuracy of bladder shape parameter design is effectively improved, and the service life of the vulcanization bladder is prolonged.
The foregoing detailed description of the application has been presented for purposes of illustration and description, but is not intended to limit the scope of the application, i.e., the application is not limited to the details shown and described.
Claims (3)
1. The design method of the appearance parameters of the vulcanizing bladder is characterized in that the numerical values of the outer diameter of the bladder and the perimeter of the outer contour of the bladder are calculated based on the known dimensions of the bladder clamp and the parameters of the tire to be processed, and specifically, the numerical values are as follows:
determining the circumferential stretching rate and the radial stretching rate, the clamping edge width, the clamping edge inner diameter and the clamping edge height of the capsule according to the known capsule clamp size;
determining the outer diameter, tread thickness, inner contour circumference, engagement diameter, engagement width and rolling axis of the tire according to the known parameters of the tire to be processed;
the formula is as follows:
bladder outer diameter = tire inner diameter/radial stretch = (tire outer diameter-2 tread thickness)/radial stretch;
bladder outer contour circumference= (tire inner contour circumference + rim width x 2)/circumferential stretch ratio= (tire inner contour circumference + diameter-grip inner diameter-2 x grip width)/circumferential stretch ratio;
drawing the outline of the capsule according to the obtained outer diameter of the capsule and the perimeter of the outer outline of the capsule;
the circumferential stretch is equal to the radial stretch;
the specific process for drawing the outline of the capsule comprises the following steps:
(1) Taking the intersection point of the vertical central line of the tire and the inner contour of the tire as a starting point P 0 In P 0 Drawing a circle with the radius r=L×α as the center of a circle, wherein the intersection point of the circle and the inner contour of the tire is P 1 Then use P 1 Drawing a circle with radius r=L×α as the center of a circle, and taking the intersection point of the circle and the inner contour of the tire as P 2 And so on to obtain P 3 、P 4 …P n The circumferential stretching rate and the radial stretching rate are alpha, and the length L of a fixed interval on the capsule is set, so that the length corresponding to the inner contour of the tire after the capsule is expanded is L x alpha;
(2) Drawing origin L by taking maximum diameter point of capsule crown as capsule contour 0 ，L 0 To P 0 Distance m= (tire inner diameter-bladder outer diameter)/2, in L 0 Drawing a circle with a radius L for the circle center;
(3) With P 1 For the starting point, the point D is obtained by perpendicularly projecting the tire rolling axis 1 At this time P 1 To D 1 Is vertically moved down by a distance of N, D 1 Drawing a circle with the radius r=n/alpha as the center of the circle, intersecting the circle drawn in the previous step at a point L 1 And so on to obtain L 2 、L 3 、L 4 …L n Until the intersection point is no longer generated between the two circles;
(4) Determining the position of the clamping edge according to the clamping edge radius Db and the contact width Wb by taking the rolling axis of the tire as a reference;
(5) Determining a capsule crown curve;
(6) Adjusting the position of the clamping edge to enable the perimeter of the outer outline of the capsule to reach a preset value;
(7) Determining a capsule thickness distribution;
(8) Connecting the capsule clamping edge with the capsule crown curve by using a smooth curve to form the appearance structure of the capsule;
setting the fixed interval length L on the capsule to be 10mm;
the method for determining the clamping edge position according to the clamping edge radius Db and the bonding width Wb comprises the following steps: drawing a horizontal line from a half of the inner diameter Db of the clamping edge, intersecting the horizontal line with the central line of the tire at a point O, taking the O as a starting point, taking an end point W at a position which is 1.5 times of the outward distance of the clamping width Wb along the horizontal line, taking the W point as an edge position of the clamping edge, then vertically drawing the height A of the clamping edge upwards by taking the W point as the starting point, horizontally drawing the width B of the clamping edge to the right by taking the W point as the starting point, and supplementing the rectangle to obtain a position diagram of the cross section size of the clamping edge;
the method for determining the capsule crown curve comprises the following steps: will L 1 、L 2 、L 3 、L 4 、……、L n Point hook connection, and select 3 points L 1 、L (1+n)/2 、L n Determining an arc;
the method for adjusting the clamping edge position to enable the perimeter of the outer outline of the capsule to reach a preset value comprises the following steps: determining a difference E between the outer contour perimeter of the capsule and a preset value, and moving the clamping edge position outwards by E x beta distance, wherein beta is a known coefficient related to the tire flat ratio;
the method for determining the capsule thickness distribution comprises the following steps: and smoothly transiting and connecting according to the determined thickness of the sub-mouth part and the thickness of the capsule crown part to obtain the thickness of the capsule connecting part.
2. The method for designing appearance parameters of a curing bladder according to claim 1, wherein the thickness of the bead portion is 10mm from the rim and the inner thickness is fixed to be TBR-15.5mm/PCR-10mm.
3. The method for designing appearance parameters of a vulcanized capsule according to claim 1, wherein the thickness of the capsule crown is within a range of PCR-10mm/TBR-20mm from the center of the capsule, and the thickness is fixed to be TBR-6mm/PCR-4.5mm.
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| JP2006095753A (en) * | 2004-09-28 | 2006-04-13 | Bridgestone Corp | Tire vulcanizing bladder |
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| JP2009073047A (en) * | 2007-09-20 | 2009-04-09 | Bridgestone Corp | Method of manufacturing vulcanizing bladder and vulcanizing bladder |
| CN210174241U (en) * | 2019-04-22 | 2020-03-24 | 赛轮集团股份有限公司 | Tire curing bladder |
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| JP2006095753A (en) * | 2004-09-28 | 2006-04-13 | Bridgestone Corp | Tire vulcanizing bladder |
| CN2887565Y (en) * | 2005-10-31 | 2007-04-11 | 四川轮胎橡胶（集团）股份有限公司 | B type tire vulcanized capsule clamp |
| JP2009073047A (en) * | 2007-09-20 | 2009-04-09 | Bridgestone Corp | Method of manufacturing vulcanizing bladder and vulcanizing bladder |
| CN210174241U (en) * | 2019-04-22 | 2020-03-24 | 赛轮集团股份有限公司 | Tire curing bladder |
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| CN111709100A (en) | 2020-09-25 |
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