| 摘要 |
The invention relates to a matrix element for a tyre mould which includes a body (12) defining a moulding surface (14) intended for at least partially moulding a tread of the tyre, at least one injection nozzle (26) arranged on the body and provided with at least one outlet opening (26a), at least one supply channel extending into the body and the injection nozzle, communicating with said outlet opening, and at least one sealing member (30) which is movable relative to the injection nozzle between a closed position and an open position of said outlet opening. The body (12), the injection nozzle (26) and the sealing member (30) are manufactured by deposition and selective melting of stacked powder layers. |
