| 摘要 |
The apparatus serves for compression moulding performs ( 9 ) for synthetic resin containers by inserting under pressure a mould punch ( 15 ) into a die cavity ( 20 a) loaded with a charge ( 8 ), the preforms ( 9 ) comprising an upper neck ( 91 ) provided with projections and a hollow body ( 92 ) lying below the neck ( 91 ). The apparatus comprises a plurality of first die components ( 21 ), each arranged to form the outer surface of the hollow body ( 92 ) of the perform ( 9 ), and being operated by inserting said punch ( 15 ) underpressure into each of them, to compression mould the perform ( 9 ). An equal plurality of second die components ( 22 ) are provided, each arranged to form the outer surface of the neck ( 91 ), each being associated with and secured to the first die component ( 21 ), said second component ( 22 ) being divided into at least two sectors ( 23 ) to be drawn apart to extract the preform ( 9 ). According to the method of the invention, during the step of feeding the charge into the die cavity the second die component is associated with the first die component, said second component being divided into at least two sectors able to be drawn apart to extract the preform.
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