Blow molding apparatus

Patent metadata

Field	Value
Publication number	US-2021237331-A1
Application number	US-201917051309-A
Country	US
Kind code	A1
Filing date	Apr 26, 2019
Priority date	May 2, 2018
Publication date	Aug 5, 2021
Grant date	—

Abstract

A configuration including: a primary blow molding station including: an injection molding part configured to injection-mold a plurality of preforms simultaneously; a primary blow molding part configured to blow-mold the preform to form a first blow-molded article; and a first transport device including a first transport path and configured to intermittently circulate and transport a plurality of the preforms and the first blow-molded article along the first transport path at a predetermined interval; and a secondary blow molding station installed independently of the primary blow molding station, the secondary blow molding station including: a secondary blow molding part configured to blow-mold the first blow-molded article to form a resin container; and a second transport device configured to hold the first blow-molded article at a downstream side of the primary blow molding part in the first transport path and transport the first blow-molded article 40 to the secondary blow molding part.

First claim

1 . A blow molding apparatus for forming a resin container by blow-molding a preform, the blow molding apparatus comprising:
a primary blow molding station including:
an injection molding part configured to injection-mold a plurality of the preforms simultaneously;
a primary blow molding part configured to blow-mold the preform to form a first blow-molded article; and
a first transport device including a first transport path which connects the injection molding part and the primary blow molding part, and configured to intermittently circulate and transport a plurality of the preforms and the first blow-molded article along the first transport path at a predetermined interval; and
a secondary blow molding station installed independently of the primary blow molding station, the second blow molding station including:
a secondary blow molding part configured to blow-mold the first blow-molded article to form the resin container; and
a second transport device configured to hold the first blow-molded article at a downstream side of the primary blow molding part in the first transport path and transport the first blow-molded article to the secondary blow molding part.

2 . The blow molding apparatus according to claim 1 ,
wherein the second transport device includes a gripping member configured to grip the first blow-molded article and a second transport path extending in a direction orthogonal to the first transport path, and the second transport device moves the gripping member gripping the first blow-molded article along the second transport path to transport the first blow-molded article to the secondary blow molding part.

3 . The blow molding apparatus according to claim 1 ,
wherein in the injection molding part, N1 preforms are injection-molded simultaneously, wherein in the primary blow molding part, N2 preforms are blow-molded simultaneously, wherein in the secondary blow molding part, N3 first blow-molded articles are blow-molded simultaneously, and wherein N1, N2, and N3, which represent numbers being molded simultaneously, are set to satisfy a relationship of N1:N2:N3=4:1:1 or 3:1:1.

4 . The blow molding apparatus according to claim 1 ,
wherein the resin container is a resin container with a handle, and wherein the blow molding apparatus further comprises: a handle supply device connected to the secondary blow molding station and configured to supply the handle to the secondary blow molding part.

5 . The blow molding apparatus according to claim 1 ,
wherein the resin container is a resin container in which a central axis of a neck portion is disposed at a position deviated from a central axis of a body portion, wherein the secondary blow molding station includes a pressurizing device configured to apply a pressure to curve a body portion of the first blow-molded article transported by the second transport device, and wherein in the secondary blow molding part, the first blow-molded article whose body portion has been curved by the pressurizing device is blow-molded.

Assignees

• Nissei Asb Machine Co Ltd

Inventors

• Ando Masatoshi

Classifications

• B29C49/42101

  Conveyors, e.g. flat conveyor or clamping between two bands · CPC title

• B29C49/42073

  Grippers · CPC title

• B29C49/42093

  Transporting apparatus, e.g. slides, wheels or conveyors · CPC title

• B29C49/18

  using several blowing steps (B29C49/16 takes precedence) · CPC title

• B29C49/28 Primary

  Blow-moulding apparatus · CPC title