Slush molding apparatus with heated air flow control and...

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 33/04 (2006.01) B29C 33/00 (2006.01) B29C 41/18 (2006.01) B29C 41/46 (2006.01)

Patent

CA 2350625

A molding apparatus (11) and method, such as slush or rotational molding, for forming a thermoplastic shell (15) or skin product. The mold apparatus includes a hollow mold housing provided with a mold shell thereon, which together define an air chamber (75) located within the mold housing. A plurality of air flow control devices (80), such as centrifugal fans, are mounted within the mold housing and direct heated air into the air chamber (75) through discharge channels defined within the mold housing. The mold apparatus also includes an elongate air supply (32) and heating arrangement which generates heated air within the mold housing and along substantially the entire longitudinal extent thereof to effect uniform heating of the mold shell (15).

Dispositif (11) et procédé de moulage, tel que le moulage par embouage ou par rotation, destiné à former une coquille ou peau thermoplastique. Le dispositif de moulage comprend un moule creux doté d'une coquille de moule (15), ces deux éléments définissant ainsi une chambre à air (75) située à l'intérieur du moule. Plusieurs dispositifs (80) de contrôle du débit d'air, tels que des ventilateurs centrifuges, sont montés au sein du moule et dirigent l'air chauffé dans la chambre à air (75) à travers les canaux d'écoulement définis dans le moule. Le dispositif de moulage comprend également une alimentation en air (32) et un élément de chauffage allongés, qui génère de l'air chaud dans le moule et presque tout le long de celui-ci, pour effectuer un chauffage uniforme de la coquille de moule (15).

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