Closing unit for a double toggle molding apparatus and method

Details Closing unit for a double toggle molding apparatus and method Closing unit for a double toggle molding apparatus and method

1992-01-30

1993-10-12

Heitbrink, Tim

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

4254516, 425593, B29C 4566

Patent

active

052522865

ABSTRACT:
A machine for molding is equipped with a toggle mechanism for moving one of the die-holders. The movable die holder slides on columns. The columns are attached at one end to a stationary die-holder and at another end to a closing plate. The toggle mechanism is preferably a double toggle and connects the closing plate to the movable die-holder. A control ring also slides on the columns and is connected to the toggle mechanism by connecting rods. A hydraulic actuator is used to apply force to the movable die-holder to move it towards and away from the stationary die-holder. The control ring and the connecting rods are designed so that the toggle mechanism extends outside the columns during movement of the movable die-holder away from the stationary die-holder.

REFERENCES:
patent: 4088432 (1978-05-01), Farrell

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