Device for the production of mouldings and process for the...

B - Operations – Transporting – 29 – C

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B29C 33/38 (2006.01) B29C 33/04 (2006.01) B29C 45/73 (2006.01) B29D 17/00 (2006.01)

Patent

CA 2168267

A device for producing moulded bodies, in particular plastic moulded bodies, has a mould base with at least two mould inserts (1) and coolant cavities (2). The mould inserts (1) enclose the moulded body moulding cavity. Also disclosed is a process for producing such a device. Productivity is increased by shorter cycle times in that a heat compensation layer (4) with high thermal conductivity is arrangedbetween the coolant cavities (2) and the moulded body moulding cavity. The device is produced in the following steps: a cavity is produced in the moulded inserts (1), in the area of the future coolant cavities (2): a heat compensation element is prepared; the heat compensation element is inserted and the coolant cavity (2) is arranged; and mould insert (1) and heat compensation element are joined.

Un dispositif de fabrication de corps moulés, notamment de corps moulés en matières plastiques, comprend un cadre de moule ayant au moins deux empreintes rapportées (1) et des cavités (2) contenant l'agent réfrigérant. Les empreintes rapportées (1) renferment la cavité de moulage du corps moulé. Un procédé de fabrication d'un tel dispositif permet d'accroître la productivité par des cycles de fabrication plus courts. A cet effet, une couche de compensation thermique (4) à haute conductibilité thermique est située entre les cavités (2) qui contiennent l'agent réfrigérant et la cavité de moulage du corps moulé. Le dispositif est produit par les étapes suivantes: une cavité est ménagée dans les empreintes rapportées (1) dans la zone des cavités (2) devant contenir l'agent réfrigérant; un élément de compensation thermique est fabriqué; l'élément de compensation thermique est posé et les cavités (2) devant contenir l'agent réfrigérant sont ménagées; et l'empreinte rapportée (1) et l'élément de compensation thermique sont assemblés.

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