JP2007261150A5

JP2007261150A5 -

Info

Publication number: JP2007261150A5
Application number: JP2006090800A
Authority: JP
Filing date: 2006-03-29
Publication date: 2009-04-30
Anticipated expiration: 2026-03-29

Claims

In an injection stretch blow molding apparatus having at least an injection molding part and a stretch blow molding part, and having a rotating plate that intermittently conveys a neck mold disposed corresponding to each molding part to each molding part,
A lower base fixed on the machine base and forming a molding space of each molding part with the rotating plate;
An upper base disposed above the lower base and supporting the rotating plate;
Saddle-type clamping means for moving the upper base up and down with respect to the lower base;
A blow unit base board which is disposed in the stretch blow molding part, is guided up and down with respect to the lower base, and is mounted with horizontal mold clamping means of two blow cavity split molds clamped to the neck mold;
A blow unit position adjustment mechanism for adjusting the height position by driving the blow unit base board up and down;
An injection stretch blow molding apparatus comprising:

In claim 1,
The blow unit position adjusting mechanism is
A first screw shaft connected to the blow unit base board and disposed on a center line of the two blow cavity split molds;
A first nut portion meshing with the first screw shaft;
A first electric motor for generating a rotational force transmitted to the first nut portion;
An injection stretch blow molding apparatus comprising:

In claim 2,
The blow unit position adjusting mechanism is
The first nut portion is formed on the inner side, a gear portion is formed on the outer peripheral portion, and a large-diameter gear rotatably supported on the lower base;
A small-diameter gear that is rotated by the rotational output of the first electric motor and meshes with the large-diameter gear;
An injection stretch blow molding apparatus comprising:

In any one of Claims 1 thru | or 3,
The blow unit position adjusting mechanism is provided on the blow unit base board at peripheral positions equidistant from the first screw shaft, and is guided by a plurality of guide holes formed in the lower base. An injection stretch blow molding apparatus having a shaft.

In any one of Claims 1 thru | or 4,
The horizontal mold clamping means includes:
Two second electric motors supported by the blow unit base board;
The two second electric motors have two horizontal mold clamping toggle mechanisms that are respectively expanded and contracted with respect to the blow unit base board and pin-coupled to two mold clamping plates that fix the two blow cavity split molds. An injection stretch blow molding device.

In claim 5,
Each of the two horizontal clamping toggle mechanisms is
A second screw shaft that is rotated by rotational output from one of the two second electric motors;
A second nut portion meshing with the second screw shaft;
A drive arm having one end pin-coupled to the two clamping plates and the other end pin-coupled to the second nut portion;
A driven arm having one end pin-coupled to the drive arm at a position between the pin coupling positions at both ends of the drive arm, and the other end pin-coupled to one of the two side members;
An injection stretch blow molding apparatus comprising:

In claim 6,
The injection stretch blow molding apparatus, wherein the one end of the driven arm is pin-coupled at a midpoint between pin coupling positions at both ends of the drive arm.

In any one of Claims 1 thru | or 7,
An injection stretch blow molding apparatus, wherein a blow bottom mold fixing plate is connected to the blow unit base board.

In any one of Claims 1 thru | or 8.
A traction plate disposed in the machine base below the lower base,
A plurality of tie bars that pass through the lower base and connect the upper base and the traction plate;
A saddle-type tightening toggle mechanism disposed in the machine base and extending and retracting the traction plate by extending and contracting with the lower base as a reference position;
A third electric motor for transmitting a driving force to the saddle clamp toggle mechanism;
An injection stretch blow molding apparatus characterized by further comprising:

In claim 9,
An electric motor fixing plate for attaching a fourth electric motor for clamping an injection core mold is disposed above the upper base,
An injection core mold clamping toggle mechanism that clamps the injection core mold by being expanded and contracted by the fourth electric motor with the electric motor fixing plate as a reference position is provided,
The injection stretch blow molding apparatus, wherein the motor fixing plate, the upper base, and the traction plate can be moved up and down together with the plurality of tie bars.

In claim 10,
The injection further comprising a mold thickness adjusting mechanism that changes a height of the molding space between the lower base and the upper base to correspond to a thickness of a mold disposed in the molding space. Stretch blow molding equipment.

In claim 11,
An injection stretch blow molding apparatus, further comprising an injection core mold clamping position adjusting mechanism that adjusts a mold clamping position of the injection core mold by adjusting a height position of the motor fixing plate with respect to the upper base.