| 摘要 |
The moulding apparatus e.g. for injection-moulded cylindrical components, has a vacuum pump connected to a mould with fixed and moving (1) matrices, each carrying a portion of a moulding impression (2) forming concentric moulding chambers (4) fed by injection channels (5). . Each injection channel has an opening/closing system (7) between the moulding chambers (4) and the vacuum pump, designed to create a vacuum in the channel when opened and allowing for vacuum injection when closed. Each opening/ closing system has a valve in the form of a mobile section of the channel, separating it from the pump when closed and providing continuity when open |
