Toyo Seikan Group Holdings, Ltd.

Toyo Seikan Co., Ltd.

Kouichi Narutaki

Ikuo Komatsu

Norihisa Hirota

Atsushi Yoneda

Akihiro Usami

Takuo Yamada

Youtarou Takahashi

Eiichiro Kaneko

Hiromitsu Fukuoka

A blow molding capable of maintaining the parison thickness distribution uniform, fabricating high-quality molded products, and improving its productivity. A parison supply device for supplying, to a blow mold, a parison discharged from an extrusion die, the parison supply device including: a pair of chucks for pinching, from above and below, a parison discharged downward from the extrusion die; and a chuck operation part for controlling an operation of pinching the parison by the pair of chucks and an operation of moving the pair of chucks. By the chuck operation part, the pair of chucks performs the operation of pinching the parison while being moved downward.

Parison supply device and supply method, and blow molding machine and blow molding method using same

A parison supply device that continuously supplies, to a blow molding die, parison sections of a parison discharged from an extrusion die, the parison section having a specified length. The parison supply device includes a plurality of tension chucks and a tension chuck operation unit that operates the plurality of tension chucks. The tension chuck operation unit causes the individual tension chucks to perform a repeated operation of grasping the parison at a first position near the extrusion die and moving to a second position separated from the extrusion die such that, before the preceding tension chuck is separated by a set distance from the extrusion die at the second position, the following tension chuck grasps the parison at the first position, and then the parison section is supplied to the blow molding die.

Parison supply device and supply method

Growing community of inventors

Kanagawa, Japan

Kouichi Narutaki