What are the steps involved in the molding process of tire rubber?

The molding process of tire rubber is one of the key links in the tire manufacturing process, which mainly includes the following steps:

1. Preparation of adhesive components:

Prepare semi-finished rubber components required for tires by a series of processes using uniformly mixed rubber materials. These components include tread, sidewall, triangular rubber strip, shoulder pad, belt pad, etc.

The main steps include extrusion, rolling, bead forming, cord cutting, applying triangular rubber strips, and belt layer forming.

2. Tire forming:

Assemble all semi-finished rubber components into raw tires on the molding machine according to technical standards.

The molding process may involve different molding equipment and methods, such as sleeve molding machines (sleeve method) and layer bonding molding machines (layer bonding method) for diagonal tires, as well as primary and secondary molding machines (layer bonding method) for radial tires.

The formed raw tire looks like an uncured tire product, and it needs to be inspected before being transported to the vulcanization process.

3. Sulfurization:

The raw tire is loaded onto a vulcanizing machine and vulcanized in a mold under appropriate time and conditions to become a finished tire.

The vulcanization process gives the tire the appearance of a finished tire, including patterns, fonts, and tread patterns.

Sulfurization equipment may include four column vulcanizing machines, balance vulcanizing machines, vulcanizing tanks, and individual vulcanizing machines.

4. Subsequent processing:

After vulcanization is completed, the tire will be sent to the final inspection area for quality inspection.

The inspection items include appearance inspection, uniformity testing, and dynamic balance testing.

Uniformity testing is carried out using a uniformity testing machine, which mainly measures radial force, lateral force, cone force, and fluctuation.

The dynamic balance test is conducted on a dynamic balance testing machine.

Finally, tires may require X-ray inspection to ensure the integrity of their internal structure.

Overall, the molding process of tire rubber is a complex and intricate process that involves multiple steps and equipment. Each step requires strict control of process parameters and quality standards to ensure that the final produced tires have excellent performance and quality.