| 摘要 |
The invention relates to the production of preforms (10) for PET bottles in batch quantities. According to the invention, the mould nests are arranged i n the injection moulds in a specific manner, thereby increasing the number of cooling positions in an after cooler (19, 40). The inventive device is provided with controllable/adjustable movement means for the two coordinates (x, y; y, z) of the transfer plane of the after cooler (19, 40), enabling th e after cooler (19, 40) to be cyclically positioned with respectively free cooling positions in the fixed arrangement of moulded objects (10) in the moulds, whereby a maximum density of cooling positions can be obtained in sa id after cooler (19, 40) . The invention enables four times more cooling positions to be obtained, especially when arranged in a staggered manner, in comparison with the number of mould nests in said mould, in addition to allowing the number of mould nests to be increased to 144 and more.
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