B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 49/48 (2006.01) B29C 49/04 (2006.01)
Patent
CA 2448492
Fluid flow grooves (11) with a flat cross section being formed between the back surface of a metal mold (2) for blow molding and a back-up member (4) which adheres tightly to this back surface. A plurality of these fluid flow grooves (11) are provided, and these fluid flow grooves are disposed densely in parallel with partition walls (21) interposed between the grooves. Fluid inlets (12) and outlets (13) are formed in the respective fluid flow grooves (11). A heating fluid or cooling fluid enters the respective fluid flow grooves (11) via the inlets (12) from a fluid supply manifold (14). The fluid flows out of the outlets (13), enters a fluid discharge manifold (15), and is discharged to the outside. Rapid heating and rapid cooling of the metal mold (2) are performed, no irregularity occurs in temperature, and the cycle time can be shortened, so that a metal mold device for blow molding in which the energy consumption is small can be obtained.
L'invention concerne un dispositif moule métallique pour moulage par soufflage. Plusieurs rainures (11) de circulation de fluide de forme plate en coupe transversale disposées de manière dense parallèlement les unes aux autres à travers des cloisons (21), sont formées entre la surface arrière d'un moule métallique pour moulage par soufflage (2) et un matériau support (4) disposé fermement sur la surface arrière; une admission (12) et une sortie (13) de fluide sont formées dans chacune des rainures (11) de circulation de fluide; un fluide de chauffage ou de refroidissement s'écoule d'une rampe (14) alimentant en fluide lesdites rainures (11) par les admissions (12), et le long desdites rainures (11); il s'écoule ensuite hors des sorties (13) dans une rampe d'évacuation de fluide (15) et s'évacue vers l'extérieur. Ainsi, le moule métallique (2) peut rapidement être chauffé et refroidi, ce qui élimine la non uniformité de la température, raccourcit la durée du cycle et réduit la consommation d'énergie.
Fukuhara Naoshige
Nishioka Kazumichi
Tachibana Naoaki
Mcfadden Fincham
Minoru Kasei Company Limited
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