| 摘要 |
Mould for fabricating sealing caps (1) made from plastics material, for bottles, with a sealing ring (4) connected to each cap by means of a weakening line (5) formed by a plurality of axial stems (7) spaced apart by open circumferential areas (6), in which the inserts (22) for defining, in the said impression (16), the open circumferential areas (6) of the said weakening line (5) are formed by portions (22) of devices (19) in the form of curved bodies having a wedge-shaped cross section, positioned within a conical cavity (9) of the annular body (8) of the mould within which they are retained and guided by a plurality of permanent magnets (24). The movements of the devices (19) and of the insert portions (22) take place within the conical cavity (9), thus reducing the overall dimensions of the mould.
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