Manufacturing method of rubber component for tire and manufacturing device used therein

Abstract

The present invention provides a manufacturing method of a rubber component for a tire and a manufacturing device used therein. A rubber strip from a rubber strip supply unit is directly wound on a forming machine with high precision. Furthermore dimension deviation of contraction reeled member after winding, which is caused by contraction, can be restrained. The manufacturing method of the rubber component for the tire comprises a winding step and a tire rubber component removing step. In the winding step, the rubber strip is conveyed from a delivery roller to the forming machine. The forming machine rotates and simultaneously moves transversely in an axial direction thereby winding the rubber strip from a set of conveying equipment on the forming machine and adhibiting to a spherical shape for furthermore forming the rubber component for the tire. In the tire rubber component removing step, an applicator ascends from a descending position to an ascending position thereby removing the rubber component for the tire, which is formed on the forming machine. At the descending position, the rubber strip is adhibited on the forming machine; and at the ascending position, the delivery roller leaves upwards from the forming machine for standby.

Description

technical field [0001] The present invention relates to a method for manufacturing rubber parts for tires and a manufacturing device used therefor, in which a rubber belt from a rubber extruder is wound directly and precisely on a molding machine, and the rubber belt due to shrinkage (rubber shrinkage) is reduced The resulting dimensional deviation of the tape winding body after winding. Background technique [0002] In recent years, a so-called belt winding method has been proposed in Patent Document 1, etc., by winding a long rubber belt on a cylindrical molding machine and sticking it in a spiral shape, so that the desired The tape wound body with a close cross-sectional shape is directly formed on a molding machine into rubber parts for tires such as tread rubber, sidewall rubber, lap rubber, cushion rubber, and the like. [0003] like Figure 7 As shown, in the above-mentioned Patent Document 1, the rubber belt b extruded from the rubber extruder a is adhered to the ru...

AI Technical Summary

Problems solved by technology

Therefore, the rubber belt b with low adhesive force cannot be formed into a rubber part for a tire using such a conveying device d.

Also, during conveyance, since the rubber tape b is restricted by sticking to the conveyer belt c, shrinkage of the rubber tape occurs after winding to the forming machine e

As a result, the belt winding body (rubber member for tires) i is deformed due to the shrinkage, resulting in dimensional changes or shape changes, and the wound portion of the rubber belt b is cut due to the shrinkage.

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