| 摘要 |
The mould side walls are mounted on movable supports for cyclic movement between a mould cavity forming position and a mould stripping position. An air plenum chamber is also mounted on each support above the mould side walls without obstructing the mould cavity, each plenum having downward opening outlets which communicate with the inlets of the air cooling passages in the mould side walls. Air is thus supplied from the plenum chamber to each cooling passage at the same pressure.
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