US 10,632,666 B2 · Parison supply device and supply method, and blow molding machine and blow molding method using same

Abstract

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.

Claims24

Dependent claims

A parison supply device for supplying a parison discharged from an extrusion die to a blow mold, comprising:

a pair of vertically movable chucks for pinching, from above and below, a parison discharged downward from the extrusion die, and for moving the parison to the blow mold;
and a chuck operation part for controlling an operation of pinching the parison by the pair of vertically movable chucks and an operation of moving the pair of vertically movable chucks,
wherein by the chuck operation part, the pair of vertically movable chucks perform the operation of pinching the parison while being moved downward, and one chuck out of the pair of vertically movable chucks includes an opening part which allows the parison to be gripped without closing a one-side opening of the parison, and a blow nozzle is inserted into the opening part.

Dependencies are inferred from the claim text.

Facts

Application

15/323,877Filed 27 Jul 2015

Priority

JP 2014-1590864 Aug 2014

Published

US 2017/0173842 A122 Jun 2017

Granted

28 Apr 2020

Term ends

Not estimatedThe source records don’t support an estimate.

Classification22 codes

B29C 49/4205
Component parts, details or accessories; Auxiliary operations: handling means, e.g. transfer, loading or discharging means
B29C 49/04
Combined blow-moulding and manufacture of the preform or the parison: extrusion blow-moulding
B29C 49/10
Biaxial stretching during blow-moulding: using mechanical means for prestretching
B29C 49/28
Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor: blow-moulding apparatus

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

Life of this patent

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

Life of this patent

Abstract

Claims24