A winding setting method for gradually changing the tension of a crown band

Abstract

The application discloses a winding setting method of crown belt strip gradual change tension, comprising the following steps: according to the crown belt layer structure and winding demand, the crown belt layer is divided into several symmetrical sub-zones from the shoulder to the center along the axial direction; then according to the several sub-zones, the winding width of each sub-zone is calculated; based on the setting mode of the gradual change tension, the tension value of each sub-zone is determined; the winding angle of the drum of each sub-zone is calculated by using the obtained winding width of each sub-zone; and the system program parameters are set according to the obtained winding width, tension value and winding angle of each sub-zone. The crown belt layer is divided into several zones, and the parameters of the corresponding zones are obtained for setting, so that the problem of uneven crown belt strip prestress at different positions of the tire blank during the molding and the vulcanization inflation shaping can be effectively solved, the prestress from the shoulder to the crown is balanced, the deformation of the belt layer end is controlled, the tire tread ground pressure and the ground footprint are optimized, and the high-speed and endurance performance of the tire is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tire design, and in particular to a winding setting method for a cap strip with gradual tension. Background Art

[0002] During the tire building process, a cap strip of a certain width (typically 10mm / 15mm) is wrapped around the belt to provide a certain degree of restraint on the tire crown. During the winding process, the equipment controls the tension of the cap strip. Different winding tensions affect the restraint force exerted by the cap strip on the tire crown and shoulder. Greater winding tension increases the restraint force exerted by the cap strip on the tire crown and shoulder; lower winding tension reduces the restraint force exerted by the cap strip on the tire crown and shoulder. In existing technical solutions, the cap strip's axial winding tension is either constant or high shoulder tension combined with low crown tension.

[0003] The disadvantage of the existing technology is that in the existing crown strip winding technology, when the tire is inflated, the radial expansion of the crown and the shoulder is different, the middle expands more and the shoulder expands less, and the stresses they are subjected to are different.

[0004] Constant-tension cap strip winding provides consistent axial restraint at all locations on the tire. However, excessive winding tension can lead to insufficient radial expansion of the crown, while insufficient winding tension can prevent effective deformation of the belt ends at the shoulders, impacting the tire's high-speed performance and durability.

[0005] Although the high tension on the shoulder + low tension on the crown adjusts the distribution of the axial tension of the tire's crown layer, the tension varies greatly, and the width range of large and small tensions is fixed, which cannot fit the contour shape of the tire. Summary of the Invention

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art. To achieve the above purpose, a winding setting method for gradually changing the tension of a crown strap is adopted to solve the problems raised in the above background technology.

[0007] A method for winding and setting a tapered tension, comprising the following steps:

[0008] Step S1: Divide the cap ply into several symmetrical partitions along the axial direction from the shoulder to the center according to the cap ply structure and winding requirements;

[0009] Step S2: Calculate the winding width of each partition according to the divided partitions;

[0010] Step S3: determining the tension value of each partition based on the setting method of the gradual tension;

[0011] Step S4: Calculate the winding angle of the drum of each partition using the obtained winding width of each partition;

[0012] Step S5: setting system program parameters according to the obtained winding width, tension value, and drum winding angle of each partition.

[0013] As a further solution of the present invention: the specific steps in step S1 include:

[0014] The winding area is divided into multiple areas on one side of the tire according to actual needs;

[0015] The cap layer is divided symmetrically along the center line to the left and right sides, and one side is divided into seven areas, namely the first area PH1, the second area PH2, the third area PH3, the fourth area PH4, the fifth area PH5, the sixth area PH6, and the seventh area PH7.

[0016] As a further solution of the present invention: the specific steps in step S2 include:

[0017] The seven regions are divided into seven areas according to one side of the divided areas, namely a first area PH1, a second area PH2, a third area PH3, a fourth area PH4, a fifth area PH5, a sixth area PH6, and a seventh area PH7;

[0018] When the cap ply structure is a structure of a full cap ply layer plus a marginal cap ply layer, the winding width W1 of the first region PH1 is a preset value, the winding width W2 of the second region PH2 is the width of the cap ply material, the winding width W3 of the third region PH3 is 15 mm to 30 mm, the winding width W4 of the fourth region PH4 is (W / 2-W3-W7) / 3, the winding width W5 of the fifth region PH5 is (W / 2-W3-W7) / 3, the winding width W6 of the sixth region PH6 is (W / 2-W3-W7) / 3, and the winding width W7 of the seventh region PH7 is 30 mm to 35 mm.

[0019] When the cap ply structure is a full cap ply structure, the winding width W1 of the first region PH1 is the width of the cap ply material, the winding width W2 of the second region PH2 is 15 mm to 30 mm, the winding width W3 of the third region PH3 is (W / 2-W2-W7) / 4, the winding width W4 of the fourth region PH4 is (W / 2-W2-W7) / 4, the winding width W5 of the fifth region PH5 is (W / 2-W2-W7) / 4, the winding width W6 of the sixth region PH6 is (W / 2-W2-W7) / 4, and the winding width W7 of the seventh region PH7 is 30 mm to 35 mm.

[0020] Where W is the total width of the cap layer.

[0021] As a further solution of the present invention: the specific steps in step S3 include:

[0022] After determining the cap layer structure and based on the setting method of gradual tension, the tension values ​​of the first area PH1, the second area PH2, the third area PH3, the fourth area PH4, the fifth area PH5, the sixth area PH6, and the seventh area PH7 are determined;

[0023] The setting mode of the gradual tension includes uniform gradual change and non-uniform gradual change.

[0024] As a further solution of the present invention: the specific steps in step S4 include:

[0025] Determine the winding angles of the drums of the first, second, third, fourth, fifth, sixth, and seventh zones PH1, PH2, PH3, PH4, PH5, PH6, and PH7, based on the obtained winding widths of the respective zones.

[0026] When the cap ply structure is a structure of a full cap ply layer plus a marginal cap ply layer, the winding angle of the drum in the first area PH1 is (W1-a) / s*360, the winding angle of the drum in the second area PH2 is 360, the winding angle of the drum in the third area PH3 is W3 / s*360, the winding angle of the drum in the fourth area PH4 is W4 / s*360, the winding angle of the drum in the fifth area PH5 is W5 / s*360, the winding angle of the drum in the sixth area PH6 is W6 / s*360, and the winding angle of the drum in the seventh area PH7 is (W7-a / 2) / s*360;

[0027] When the cap ply structure is a full cap ply structure, the winding angle of the drum in the first area PH1 is 360, the winding angle of the drum in the second area PH2 is W2 / s*360, the winding angle of the drum in the third area PH3 is W3 / s*360, the winding angle of the drum in the fourth area PH4 is W4 / s*360, the winding angle of the drum in the fifth area PH5 is W5 / s*360, the winding angle of the drum in the sixth area PH6 is W6 / s*360, and the winding angle of the drum in the seventh area PH7 is (W7-a / 2) / s*360;

[0028] Where s is the winding step, that is, the axial relative distance the winding head moves when the belt drum rotates one circle; a is the width of the cap layer material.

[0029] As a further solution of the present invention: the specific steps in step S5 include:

[0030] The winding width and tension value of each partition obtained under different cap layer structures, as well as the winding angle of the drum will be set;

[0031] At the same time, the obtained parameters are set into the corresponding recipe parameters of the equipment.

[0032] Compared with the prior art, the present invention has the following technical effects:

[0033] By adopting the above-mentioned technical solution, the cap ply is divided into several symmetrical zones along the axial shoulder to the center, and parameters are set according to different structures. Therefore, any number of zones can be set and the corresponding cap ply tension can be set according to the tire profile design and performance requirements. The present invention sets variable tension in each cap ply zone according to the tire profile design, so that the prestress at different positions of the tire is different, which can not only meet the radial expansion requirements of different positions of the tire, but also ensure radial extension of different positions of the tire in combination with the tire profile, thereby improving the durability, high-speed performance and other performance of the tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0035] Figure 1 A schematic diagram of the steps of the winding setting method according to the embodiment disclosed in this application;

[0036] Figure 2 A flowchart of a winding setting method according to an embodiment disclosed in this application;

[0037] Figure 3 This is a schematic diagram of the winding interval division of the 1JF1JE structure of the embodiment disclosed in this application;

[0038] Figure 4 This is a schematic diagram of the winding interval division of the 1JF structure of the embodiment disclosed in this application;

[0039] Figure 5 FIG. 4 is a tension curve diagram of different JF tensions of the embodiments disclosed in this application. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] Please refer to Figure 1 and Figure 2 In an embodiment of the present invention, a winding method for setting a gradual tension of a crown strap comprises the following specific steps:

[0042] Step S1: Divide the cap ply into several symmetrical partitions along the axial direction from the shoulder to the center according to the cap ply structure and winding requirements. The specific steps include:

[0043] The winding area is divided into multiple areas on one side of the tire according to actual needs;

[0044] In this embodiment, seven areas are set on one side of a tire as an example for explanation;

[0045] The cap layer is divided symmetrically along the center line to the left and right sides, and one side is divided into seven areas, namely the first area PH1, the second area PH2, the third area PH3, the fourth area PH4, the fifth area PH5, the sixth area PH6, and the seventh area PH7.

[0046] Step S2: Calculate the winding width of each partition according to the divided partitions. The specific steps include:

[0047] The seven regions are divided into seven areas according to one side of the divided areas, namely a first area PH1, a second area PH2, a third area PH3, a fourth area PH4, a fifth area PH5, a sixth area PH6, and a seventh area PH7;

[0048] When the cap ply structure is a structure of a full cap ply layer plus a marginal cap ply layer, the winding width W1 of the first region PH1 is a preset value, the winding width W2 of the second region PH2 is the width of the cap ply material, the winding width W3 of the third region PH3 is 15 mm to 30 mm, the winding width W4 of the fourth region PH4 is (W / 2-W3-W7) / 3, the winding width W5 of the fifth region PH5 is (W / 2-W3-W7) / 3, the winding width W6 of the sixth region PH6 is (W / 2-W3-W7) / 3, and the winding width W7 of the seventh region PH7 is 30 mm to 35 mm.

[0049] When the cap ply structure is a full cap ply structure, the winding width W1 of the first region PH1 is the width of the cap ply material, the winding width W2 of the second region PH2 is 15 mm to 30 mm, the winding width W3 of the third region PH3 is (W / 2-W2-W7) / 4, the winding width W4 of the fourth region PH4 is (W / 2-W2-W7) / 4, the winding width W5 of the fifth region PH5 is (W / 2-W2-W7) / 4, the winding width W6 of the sixth region PH6 is (W / 2-W2-W7) / 4, and the winding width W7 of the seventh region PH7 is 30 mm to 35 mm.

[0050] Where W is the total width of the cap layer.

[0051] Step S3: Determine the tension value of each partition based on the setting method of the gradual tension. The specific steps include:

[0052] After determining the cap layer structure and based on the setting method of gradual tension, the tension values ​​of the first area PH1, the second area PH2, the third area PH3, the fourth area PH4, the fifth area PH5, the sixth area PH6, and the seventh area PH7 are determined;

[0053] The setting mode of the gradual tension includes uniform gradual change and non-uniform gradual change.

[0054] Step S4: Calculate the winding angle of the drum of each partition using the obtained winding width of each partition. The specific steps include:

[0055] Determine the winding angles of the drum in the first, second, third, fourth, fifth, sixth, and seventh zones PH1, PH2, PH3, PH4, PH5, PH6, and PH7, based on the obtained winding widths of the respective zones.

[0056] When the cap ply structure is a structure of a full cap ply layer plus a marginal cap ply layer, the winding angle of the drum in the first area PH1 is (W1-a) / s*360, the winding angle of the drum in the second area PH2 is 360, the winding angle of the drum in the third area PH3 is W3 / s*360, the winding angle of the drum in the fourth area PH4 is W4 / s*360, the winding angle of the drum in the fifth area PH5 is W5 / s*360, the winding angle of the drum in the sixth area PH6 is W6 / s*360, and the winding angle of the drum in the seventh area PH7 is (W7-a / 2) / s*360;

[0057] When the cap ply structure is a full cap ply structure, the winding angle of the drum in the first area PH1 is 360, the winding angle of the drum in the second area PH2 is W2 / s*360, the winding angle of the drum in the third area PH3 is W3 / s*360, the winding angle of the drum in the fourth area PH4 is W4 / s*360, the winding angle of the drum in the fifth area PH5 is W5 / s*360, the winding angle of the drum in the sixth area PH6 is W6 / s*360, and the winding angle of the drum in the seventh area PH7 is (W7-a / 2) / s*360;

[0058] Where s is the winding step, that is, the axial relative distance the winding head moves when the belt drum rotates one circle; a is the width of the cap layer material.

[0059] Step S5: setting system program parameters according to the obtained winding width, tension value of each partition, and winding angle of the drum. The specific steps include:

[0060] The winding width and tension value of each partition obtained under different cap layer structures, as well as the winding angle of the drum will be set;

[0061] At the same time, the obtained parameters are set into the corresponding recipe parameters of the equipment.

[0062] Example 1:

[0063] In this embodiment, Figure 3 As shown in the figure, it is a schematic diagram of the winding interval division of the 1JF1JE structure. When the crown layer structure is a structure of a full crown layer plus a marginal crown layer:

[0064] The division of winding interval can be set according to actual needs, such as Figure 3 As shown in the figure, taking the 7-zone production of 1JF1JE structure (i.e., one full cap layer plus one edge cap layer structure) to achieve a gradient change from high tension at the end to low tension in the middle as an example, the cap layer is divided into 7 zones along the center line (symmetrical on both sides), namely, PH1 is JE end winding, PH2 is turning zone winding, and PH3 to PH7 are JF segment winding;

[0065] The parameters are described as follows:

[0066]

[0067] Determine the width of each region:

[0068] stage Width code Width value (mm, one side) PH1 W1 JE width (design value) PH2 W2 a PH3 W3 15～30 PH4 W4 (W / 2-W3-W7) / 3 PH5 W5 (W / 2-W3-W7) / 3 PH6 W6 (W / 2-W3-W7) / 3 PH7 W7 30～35

[0069] Determine the tension value for each zone:

[0070] Among them, there are two ways to set the gradient tension: uniform gradient and non-uniform gradient;

[0071] stage Tension N-uniformitarian Tension N-heterogeneity PH1 0.6~0.7Fmax 0.6~0.7Fmax PH2 Fmax Fmax PH3 Fmax Fmax PH4 0.8~0.825Fmax 0.68~0.693Fmax PH5 0.6~0.65Fmax 0.46~0.467Fmax PH6 0.4~0.475Fmax 0.32~0.34Fmax PH7 15 15

[0072] Among them, Fmax is the maximum winding tension value;

[0073] Determine the degree of each zone drum:

[0074] stage Step (mm) Drum degree(°) PH1 S <![CDATA[(W1-a) / s ＊ 360]]> PH2 0 360 PH3 -S <![CDATA[W3 / s ＊ 360]]> PH4 -S <![CDATA[W4 / s ＊ 360]]> PH5 -S <![CDATA[W5 / s ＊ 360]]> PH6 -S <![CDATA[W6 / s ＊ 360]]> PH7 -S <![CDATA[(W7-a / 2) / s ＊ 360]]>

[0075] Finally, set up the program:

[0076] Set the step (pitch) and calculated drum rotation degrees and tension parameters into the corresponding recipe parameters of the equipment.

[0077] Example 2:

[0078] In this embodiment, Figure 4 As shown in the figure, it is a schematic diagram of the winding interval division of the 1JF structure. When the crown layer structure is a full crown layer structure:

[0079] The division of winding interval can be set according to actual needs, such as Figure 4As shown in the figure, taking the production of 1JF structure (i.e., a full-cap layer structure) in 7 zones to achieve a gradient change from high tension at the end to low tension in the middle as an example, the cap layer is divided into 7 zones along the center line (symmetrical on the left and right sides), i.e., PH1 is the starting section winding, and PH2 to PH7 are JF section winding.

[0080] The parameters are described as follows:

[0081] code name illustrate a Width of cap layer material S Winding step (i.e. the axial relative distance the winding head moves when the belt drum rotates one circle) PH1~PH7 The codes of each zone are divided, PH1 is the starting section winding, PH2~PH7 are JF section winding W Total width of crown layer W1~W7 Width of PH1 to PH7 partitions

[0082] Determine the width of each region:

[0083] stage Width code Width value (mm, one side) PH1 W1 a PH2 W2 15～30 PH3 W3 (W / 2-W2-W7) / 4 PH4 W4 (W / 2-W2-W7) / 4 PH5 W5 (W / 2-W2-W7) / 4 PH6 W6 (W / 2-W2-W7) / 4 PH7 W7 30～35

[0084] Determine the tension value for each zone:

[0085] Two ways to set gradient tension: uniform gradient and non-uniform gradient;

[0086] stage Tension N-uniformitarian Tension N-heterogeneity PH1 0.6~0.7Fmax 0.6~0.7Fmax PH2 Fmax Fmax PH3 0.84~0.86Fmax 0.75~0.78Fmax PH4 0.68~0.72Fmax 0.53~0.58Fmax PH5 0.52~0.58Fmax 0.36~0.44Fmax PH6 0.36~0.44Fmax 0.25~0.34Fmax PH7 15 15

[0087] Among them, Fmax is the maximum winding tension value;

[0088] Determine the degree of each zone drum:

[0089] stage Step (mm) Drum degree(°) PH1 S 360 PH2 0 [CD] W2 / s ＊ 360]]> PH3 -S <![CDATA[W3 / s ＊ 360]]> PH4 -S <![CDATA[W4 / s ＊ 360]]> PH5 -S [CAT] W5 / s ＊ 360]]> PH6 -S <![CDATA[W6 / s ＊ 360]]> PH7 -S <![CDATA[(W7-a / 2) / s ＊ 360]]>

[0090] Finally, set up the program:

[0091] Set the step (pitch) and calculated drum rotation degrees and tension parameters into the corresponding recipe parameters of the equipment. Specific implementation method:

[0093] Taking the 235 / 55R18 100V specification as an example, the cap layer structure is 1JF1JE (JE width 25mm, JF width 192mm, material width 10mm). According to this method, non-uniform gradient tension winding and uniform gradient tension winding are set up and compared with the existing tension winding, Fmax = 75N. The test data is as follows:

[0094] plan Tension (N) Winding range (mm) Prior Art 1 15N Full Width Prior Art 2 End 75N-Middle 15N 25mm at the end, 142mm in the middle Example 1 50-75-75-52-30-20-15 25-10-21-15-15-15-30 Example 2 50-75-75-60-45-30-15 25-10-21-15-15-15-30

[0095] like Figure 5 As shown, the figure is a schematic diagram of the winding tension curve;

[0096] From the above experimental data, it can be seen that the JF winding tension can be gradually changed from high tension to low tension, and the tension fluctuations in each section meet the requirements.

[0097] Durability test:

[0098]

[0099] It can be seen from the above experimental data that the non-uniform gradual tension and uniform gradual tension schemes implemented in the present invention increase the time until tire failure compared to the prior art, and can improve the durability of the tire to a certain extent.

[0100] High-speed test:

[0101]

[0102] It can be seen from the above experimental data that the non-uniform gradual tension and uniform gradual tension schemes implemented in the present invention increase the speed at which the tire is damaged compared to the prior art, and can improve the high-speed performance of the tire to a certain extent.

[0103] Rectangularity test data:

[0104] plan Tension (N) Rectangularity Prior Art 1 15N 95.475％ Prior Art 2 End 35N-Middle 15N 94.067％ Example 1 50-75-75-52-30-20-15 88.45％ Example 2 50-75-75-60-45-30-15 89.55％

[0105] It can be seen from the above experimental data that the non-uniform gradual tension and uniform gradual tension schemes implemented in the present invention can effectively reduce the rectangular rate of the tire surface compared to the existing technology, and can improve the overall performance of the tire to a certain extent.

[0106] High speed uniformity HSU test:

[0107]

[0108] The above experimental data show that, compared with the prior art, the non-uniform gradient tension and uniform gradient tension schemes implemented in the present invention can effectively reduce the RFV16H value at the resonant speed, thereby reducing the high-speed resonance sound of the tire and improving the comfort performance of the tire to a certain extent.

[0109] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents, and all should be included within the scope of protection of the present invention.

Claims

1. A winding method for setting the gradual tension of a crown band, characterized in that: The specific steps include: Step S1: Divide the cap ply into several symmetrical partitions along the axial direction from the shoulder to the center according to the cap ply structure and winding requirements; Step S2: Calculate the winding width of each partition according to the divided partitions; Step S3: determining the tension value of each partition based on the setting method of the gradual tension; Step S4: Calculate the winding angle of the drum of each partition using the obtained winding width of each partition; Step S5: setting system program parameters according to the obtained winding width, tension value, and drum winding angle of each partition.

2. A winding method for setting gradual tension of a cap band according to claim 1, characterized in that: The specific steps in step S1 include: The winding area is divided into multiple areas on one side of the tire according to actual needs; The cap layer is divided symmetrically along the center line to the left and right sides, and one side is divided into seven areas, namely the first area PH1, the second area PH2, the third area PH3, the fourth area PH4, the fifth area PH5, the sixth area PH6, and the seventh area PH7.

3. A winding method for setting gradual tension of a cap band according to claim 1, characterized in that: The specific steps in step S2 include: The seven regions are divided into seven areas according to one side of the divided areas, namely a first area PH1, a second area PH2, a third area PH3, a fourth area PH4, a fifth area PH5, a sixth area PH6, and a seventh area PH7; When the cap ply structure is a structure of a full cap ply layer plus a marginal cap ply layer, the winding width W1 of the first region PH1 is a preset value, the winding width W2 of the second region PH2 is the width of the cap ply material, the winding width W3 of the third region PH3 is 15 mm to 30 mm, the winding width W4 of the fourth region PH4 is (W / 2-W3-W7) / 3, the winding width W5 of the fifth region PH5 is (W / 2-W3-W7) / 3, the winding width W6 of the sixth region PH6 is (W / 2-W3-W7) / 3, and the winding width W7 of the seventh region PH7 is 30 mm to 35 mm. When the cap ply structure is a full cap ply structure, the winding width W1 of the first region PH1 is the width of the cap ply material, the winding width W2 of the second region PH2 is 15 mm to 30 mm, the winding width W3 of the third region PH3 is (W / 2-W2-W7) / 4, the winding width W4 of the fourth region PH4 is (W / 2-W2-W7) / 4, the winding width W5 of the fifth region PH5 is (W / 2-W2-W7) / 4, the winding width W6 of the sixth region PH6 is (W / 2-W2-W7) / 4, and the winding width W7 of the seventh region PH7 is 30 mm to 35 mm. Where W is the total width of the cap layer.

4. A winding method for setting gradual tension of a cap band according to claim 1, characterized in that: The specific steps in step S3 include: After determining the cap layer structure and based on the setting method of gradual tension, the tension values ​​of the first area PH1, the second area PH2, the third area PH3, the fourth area PH4, the fifth area PH5, the sixth area PH6, and the seventh area PH7 are determined; The setting mode of the gradual tension includes uniform gradual change and non-uniform gradual change.

5. The method for winding and setting the gradual tension of a cap band according to claim 1, characterized in that: The specific steps in step S4 include: Determine the winding angles of the drum in the first, second, third, fourth, fifth, sixth, and seventh zones PH1, PH2, PH3, PH4, PH5, PH6, and PH7, based on the obtained winding widths of the respective zones. When the cap ply structure is a structure of a full cap ply layer plus a marginal cap ply layer, the winding angle of the drum in the first area PH1 is (W1-a) / s*360, the winding angle of the drum in the second area PH2 is 360, the winding angle of the drum in the third area PH3 is W3 / s*360, the winding angle of the drum in the fourth area PH4 is W4 / s*360, the winding angle of the drum in the fifth area PH5 is W5 / s*360, the winding angle of the drum in the sixth area PH6 is W6 / s*360, and the winding angle of the drum in the seventh area PH7 is (W7-a / 2) / s*360; When the cap ply structure is a full cap ply structure, the winding angle of the drum in the first area PH1 is 360, the winding angle of the drum in the second area PH2 is W2 / s*360, the winding angle of the drum in the third area PH3 is W3 / s*360, the winding angle of the drum in the fourth area PH4 is W4 / s*360, the winding angle of the drum in the fifth area PH5 is W5 / s*360, the winding angle of the drum in the sixth area PH6 is W6 / s*360, and the winding angle of the drum in the seventh area PH7 is (W7-a / 2) / s*360; Where s is the winding step, that is, the axial relative distance the winding head moves when the belt drum rotates one circle; a is the width of the cap layer material.

6. A winding method for setting gradual tension of a cap band according to claim 1, characterized in that: The specific steps in step S5 include: The winding width and tension value of each partition obtained under different cap layer structures, as well as the winding angle of the drum will be set; At the same time, the obtained parameters are set into the corresponding recipe parameters of the equipment.

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