US 12,290,977 B2
Molding unit for cooling resin molded article, blow molding device, injection molding device, and method
Daizaburo Takehana, Nagano (JP); and Toshiteru Oike, Nagano (JP)
Assigned to NISSEI ASB MACHINE CO., LTD., Nagano (JP)
Appl. No. 17/633,009
Filed by NISSEI ASB MACHINE CO., LTD., Nagano (JP)
PCT Filed Aug. 6, 2020, PCT No. PCT/JP2020/030227
§ 371(c)(1), (2) Date May 19, 2022,
PCT Pub. No. WO2021/025127, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 2019-145933 (JP), filed on Aug. 8, 2019; and application No. 2019-146195 (JP), filed on Aug. 8, 2019.
Prior Publication US 2023/0226744 A1, Jul. 20, 2023
Int. Cl. B29C 49/64 (2006.01); B29C 49/06 (2006.01)
CPC B29C 49/643 (2022.05) [B29C 49/06 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A cooling mold unit for cooling a preform that has been injection-molded, the preform having a bottomed shape and made of a resin, the cooling mold unit comprising
a core mold having an outer shape corresponding to an inner shape of the preform, and being insertable into the preform, wherein
an exhaust groove extending from a tip end side to a base end side of an insertion part of the preform is provided on a surface facing an inner surface of the preform, in the core mold.