Patent ID: 8602768
Filing Date: 2013-12-10
Classification: B29C

Abstract:
1. Mould for moulded parts with internal undercuts comprising: a core; and a cavity, the core coupled inside the cavity in order to create a space between the core and the cavity for producing the respective moulded part, wherein, the core is formed by an external element and an internal element, the external element and internal element being complementary parts that fit in the cavity, the internal element housed inside the external element, the external element and internal element being axially displaceable and rotatable between each other, the external element having a plurality of slots and the internal element having a plurality of parallel protrusions, so that the plurality of protrusions and the plurality of slots are coupled such that the plurality of protrusions reside in the plurality of slots, and an axial displacement and a rotation of both the external element and internal element causes the plurality of parallel protrusions to come out from the plurality of slots and deviate from the coupling in order to release and eject the respective moulded part without causing distortions in the internal undercuts of the respective moulded part.