| 摘要 |
This device injects plastics material into a mould having a plurality of impressions. It comprises a distribution plate pierced with channels for the inlet of the plastics material to be injected and provided with heating means and an impression plate comprising a plurality of impression inserts into which the plastics material is to be injected. Injection nozzles are disposed between the distribution plate and the various impression inserts, each presenting an injection orifice opening into the impression insert associated therewith and being obturated by an obturator needle mounted to slide axially in the nozzle. The connection between the distribution plate and each nozzle is ensured by a material transfer tube engaged in two cavities made respectively in the distribution plate and the nozzle, opposite each other, the first communicating with a channel for the inlet of the plastics material and the second with the injection orifice of the nozzle, this transfer tube being in tight contact with the lateral walls of the two cavities via two respective spherical sectors provided on its side surface.
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