| 摘要 |
The inventive method is carried out using multiple cavity injection moulding tools comprising multiple rows and/or columns of cavities (3), and is initiated after the moulding tool has been opened. The lower closing device parts are only slightly lifted out of their cavities (3) and therefore only partially removed from the mould at first by means of specially formed ejectors which form a core and therefore a support surface for said lower closing device parts. The lids are completely ejected and then hang freely on the lower closing device parts with their hinges at an angle. A frame (6) is first moved between the mould parts (1, 2) of the injection moulding tool in order to close the lids. An arm (11, 12) is provided on this frame (6) for each row of adjacently injection-moulded closing devices, said arms being displaceable on the frame (6). Each arm (11,12) has several side arms (13, 14) which branch off towards the side of the mould part (1) with the closing devices to be closed and which each carry a closing cylinder (15,16) at the end. Each arm (11,12) is compulsorily guided along a curve on the frame (6) in such a way that, in relation to the sealing surface of the mould part (1), the closing cylinders (15,16) of its side arms (13,14) move first between the mould parts (1, 2), above the ejected, open lids, then at an angle to the sealing surface (4), under the lids to be closed. The closing cylinders (15,16) rotate the lids closed, moving away from the sealing surface (4) at an angle, and turn them over on their upper surface with bearing pressure, so that the lids engage in the lower closing device parts. The counter-pressure is absorbed by the ejectors. Last of all, the closed lid closing devices are completely removed from the mould. |
