Biaxial stretching and blow molding device

Patent metadata

Field	Value
Publication number	US-10870231-B2
Application number	US-201916704753-A
Country	US
Kind code	B2
Filing date	Dec 5, 2019
Priority date	Mar 18, 2015
Publication date	Dec 22, 2020
Grant date	Dec 22, 2020

Abstract

A biaxial stretch blow molding device comprises: a first guide shaft which is erected on an upper base and to which a blow core fixing member is slidably coupled; a second guide shaft erected on the stretch rod fixing member; a support member fixed to the first guide shaft and provided with a guide hole through which the second guide shaft is slidably inserted; a first drive device that moves the blow core fixing member forward and backward independently of the stretch rod fixing member; and a second drive device that moves the stretch rod fixing member forward and backward independently of the blow core fixing member.

First claim

The invention claimed is:

1. A biaxial stretch blow molding device for driving a blow core fixing member to which a blow core mold is fixed, and a stretch rod fixing member to which a stretch rod is fixed, to move forward and backward, the biaxial stretch blow molding device comprising:
a first guide shaft to which the blow core fixing member is slidably coupled;
a second guide shaft erected on the stretch rod fixing member;
a support member fixed to the first guide shaft and provided with a guide hole through which the second guide shaft is slidably inserted;
a first drive device that moves the blow core fixing member forward and backward independently of the stretch rod fixing member;
a second drive device that moves the stretch rod fixing member forward and backward independently of the blow core fixing member;
side plates provided to two ends of the blow core fixing member; and
slide members slidably mounted to the first guide shaft, the respective slide members being fixed to the respective side plates,
wherein the blow core fixing member is slidably coupled to the first guide shaft via the slide plates and the slide members.

2. The biaxial stretch blow molding device according to claim 1 , further comprising a coupling plate disposed in parallel to the blow core fixing member,
wherein upper ends of the side plates are connected each other via the coupling plate.

3. The biaxial stretch blow molding device according to claim 1 ,
wherein the second drive device includes:
a servo motor; and
a slide shaft linearly movable in an axial direction by rotation of the servo motor, and

wherein one end side of the slide shaft is connected to the stretch rod fixing member.

4. The biaxial stretch blow molding device according to claim 1 ,
wherein the stretch rod fixing member is disposed to contact the blow core fixing member when the stretch rod fixing member is driven to move backward.

Assignees

• Nissei Asb Machine Co Ltd

Inventors

• Horigome Hiroshi
• Sakabe Yuji
• Komiyama Shou

Classifications

• B29C2049/7862

  characterised by temperature values or ranges · CPC title

• B29C2049/4881

  having a mandrel or core e.g. two mould halves with a core in-between · CPC title

• B29C49/28006

  having special frame · CPC title

• B29C49/1202 Primary

  Means for fixing the stretching rod to the driving means, e.g. clamping means or bayonet connections · CPC title

• B29C49/4237

  Pneumatic drive means · CPC title