Injection molding machine having replaceable, interlockable mold

Details Injection molding machine having replaceable, interlockable mold Injection molding machine having replaceable, interlockable mold

1987-12-30

1989-05-09

Woo, Jay W.

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

For extrusion or injection type shaping means

2643287, 425575, 425589, 425595, B29C 4566

Patent

active

048284785

ABSTRACT:
A replaceable mold assembly for use in an injection molding machine includes first and second complemental mold halves adapted to be in a face-to-face engagement with one another; a first and a second engagement plate secured to the rear side of the first and the second mold half, respectively; and a bell crank lever pivotally secured to the first mold half and including a locking arm and an actuating arm and having a bolting position and an unbolting position. In the bolting position the locking arm engages the second mold half for interlocking the two mold halves and in the unbolting position the locking arm is out of engagement with the second mold half. A return spring is arranged in the first mold half for urging the bell crank lever into the bolting position. The actuating arm has an engagement face with a rocker profile. In the bolting position the rocker profile projects beyond the first engagement plate and in the unbolting position the bell crank lever is substantially flush with the first engagement plate.

REFERENCES:
patent: 4403810 (1983-09-01), Bieneck
patent: 4462783 (1984-07-01), Hehl
patent: 4555228 (1985-11-01), Nishiike et al.
patent: 4671764 (1987-06-01), Hehl

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