| 摘要 |
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.
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