Design method of tire apex core
A technology of apex rubber core and design method, which is applied in the direction of tire parts, tire edges, vehicle parts, etc. to achieve the effect of reducing production switching, solving curling, and reducing specifications
Active Publication Date: 2022-07-29
DOUBLE COIN GRP JIANGSU TIRE
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Problems solved by technology
[0004]
The purpose of the present invention is to provide a tire apex design method in order to overcome the above-mentioned defects in the prior art, reduce production switching, greatly improve production efficiency, control the width of the apex, and solve the problem of curling when sticking umbrellas
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Embodiment 1
[0021] A method for designing a tire apex rubber core, comprising the following steps:
[0022] S01. Select the specifications of the traveler rings in the same arrangement, and determine the bottom width of the apex rubber core according to formula 1.
[0023] Formula 1 is: d=L+2, where d is the bottom width of the apex rubber core, and L is the side length of the traveler;
[0024] like figure 1 As shown, traveler 1 is formed by a plurality of steel wires arranged in a regular hexagon, wherein the diameter of a single steel wire is d1, and the side length of the traveler is L=d1*n, where n is the number of steel wires at the same side length. In the example, d1=1.7mm, the cross-sectional shape of the traveler is a regular hexagon, the number n of steel wires at the same side length is 10 as an example, and the side length of the traveler is L=1.7mm*10=17mm. The bottom width of the apex rubber core is d=17+2=19mm.
[0025] The traveler can be wound according to the existin...
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The invention relates to a design method of a tire apex rubber core, which comprises the following steps: S01, selecting the specifications of bead rings in the same arrangement, and determining the bottom width of the apex rubber core according to a formula 1: d = L + 2, d being the bottom width of the apex rubber core, and L being the side length of the bead rings; s02, the edge stretch rate delta s of the apex core is measured according to the formula 2, the height and length of the apex core are determined according to the stretch rate delta s, the formula 2 is delta s = ((a + 2b) pi-c) / c, a is the inner diameter of the steel wire ring, b is the height of the apex, c is the length of the apex, and pi is the circumference ratio 3.14; s03, manufacturing a triangular rubber core standard component according to the bottom width of the triangular rubber core in the S01 and the height and length of the triangular rubber core in the S02; and S04, carding and integrating apex of different specifications, selecting apex with the size equal to or larger than that of a standard component, and applying the apex to a tire matched with the steel wire ring after treatment. Compared with the prior art, production switching is reduced, the production efficiency is greatly improved, the width of apex is controlled, and the problem of edge curling during umbrella pasting is solved.
Description
technical field [0001] The invention relates to tire technology, in particular to a design method of tire apex rubber core. Background technique [0002] The apex of the tire belongs to the bead part of the tire. The apex is filled in the lower part of the sidewall and plays a transition role between the sidewall flexure zone and the hard bead. The traditional apex includes the upper apex, the lower apex The rubber core and the filling film on the outside of the upper apex rubber core, the filling film can be used for the end protection of the carcass and the steel wire cloth, which can increase the viscosity between the apex rubber core and the steel wire frame material, and is suitable for the upper apex rubber core and the hard carcass or steel wire. The wrapping cloth makes a buffer transition, and the inner side of the apex is in direct contact with the carcass. [0003] Existing apex rubber is generally determined according to the specifications of tires. However, the...
Claims
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IPC IPC(8): B60C99/00B60C15/05
CPCB60C99/006B60C15/05Y02T90/00
Inventor 徐张宇
Owner DOUBLE COIN GRP JIANGSU TIRE