Measuring and Controlling Method for Elongation and Bending of Carcass Cords of All-steel Radial Tire

Abstract

The invention relates to the technical field of tires, in particular to a method for measuring and controlling the elongation rate and curvature of a carcass cord of an all-steel radial tire. Including the measurement and control of the elongation rate of the carcass cord and the curvature of the carcass cord; the measurement and control of the elongation rate of the carcass cord, step 1: determination of the leakage of the rubber; step 2: if the rubber leakage of the sidewall is in the judgment standard Step 3: Take a tire section with a thickness of 30mm; Step 4: Open the inner liner and the carcass, rub the carcass cord, and connect the two wire rings in a straight line; Step 6: If the carcass curtain If the curvature of the line exceeds the standard, it is judged to be unqualified, and the flat width is revised to reduce the flat width. Reducing the flat width may lead to serious glue leakage. It is necessary to re-determine the glue leakage and perform step 1. The present invention analyzes the causes of the design mechanism, and makes corresponding construction adjustments according to different design concepts and easy-to-occur process problems, so as to avoid U-explosion and side-shedding quality problems in the tires in use.

Description

technical field [0001] The invention relates to the technical field of tires, in particular to a method for measuring and controlling the elongation rate and curvature of the carcass cord of an all-steel radial tire. Background technique [0002] In the all-steel radial tire market, there are U-burst and side-off problems. The market feedback U burst or side breakout, and analyze the reasons for this problem. The main reasons for the occurrence of U burst are poor air tightness and inappropriate elongation rate of the carcass cord. Cord stretch is controlled by carcass cord bending. It is generally believed that the curvature of the carcass cord belongs to the category of factory process control by adjusting the flat width or adjusting the material distribution. [0003] With the deepening of research and the strengthening of management and control, new problems continue to appear. For example, it was originally believed that due to the large extension of the carcass cord...

AI Technical Summary

Problems solved by technology

[0004] At present, there are certain limitations in the empirical evaluation of the curvature and elongation of the carcass cord, and there is no standard measurement and control method for the measurement and control of the elongation and curvature of the carcass cord.

Images