Tyre mould and tyre moulding process using such a mould.

摘要

The tire tread mold consists of a peripheral ring of thin plates (1), measuring between 0.1 and 5 mm thick, that are positioned radially to determine the tread pattern by the shape of their inner edges. A number of adjacent mold plates are made with partial cut-outs (102) that co-operate to form venting channels. The cut-outs in adjacent plates align with one another to create circumferential channels, connected by linking slits (104) and outlets (103) to the interior of the mold. The mold plates also have deformations with a spring function that pushes them apart when the mold is opened; and they can be divided into sectors with the plates in each sector fixed together to form blocks that can move relative to one another when the mold is opened or closed.