Method for preventing bending of cords and steel cords during vulcanization

In the production of molded rubber products with cords or wire ropes, it is often found that the cords or wire ropes in the products are arranged irregularly, and some parts are curved and curved; some parts are bowed and disordered, and a force is applied during use. It is preferentially stretched, and the tension in the turbulent part is uneven. It is easy to cause the bending part to be degummed or broken first, which affects the service life of the product; the disordered part causes the tape to rotate irregularly, and when it is serious, it rolls like a fritter, which seriously affects the service life.

The improvement method has the following measures: For the single- and double-hole molding method, the molding angle of the semi-finished rubber strip can be improved, that is, the bottom portion is larger than the upper portion. When the mold is closed, the bottom rubber is pressed inward, causing the rubber to be pressed upwards, forcing the cord or the wire rope to be under tension. The bottom is larger than the upper part to minimize bending and turbulence of the cord or wire rope.