| 摘要 |
The hot runner coinjection manifold block arrangement comprises several block parts (6, 7) which may be raised to various temperatures using heating elements (8). These block parts (6, 7) are separated by an adaptor (9) and retained against the top plate (2) by a supporting element (10). The latter (10) incorporates elastic elements, preferably disc springs (11), that separate the supporting element (10) from the top plate (2) and press together the two block parts (6, 7) even in a cold state. In heated state these disc springs (11) enable axial expansion of the block parts (6, 7) and reduce the stress exerted on the supporting element (10). Pin-type formations on the adaptor (9) and the supporting element (10) ensure that the bores for controlling the locking needle (17) and the conveyor channel (13) are maintained by the thermal expansion of the block part (6, 7), i.e. are not laterally displaced.
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