US 6,419,861 B1 · Method and apparatus for setting die height

Abstract

Method and apparatus for control of a toggle operated press to effectively set relative position between a fixed platen and a die height platen. The toggle crosshead is placed at a position required to achieve a desired press clamp force. The die height platen is advanced toward the fixed platen until minute motion of the toggle crosshead away from the fixed platen is detected whereat advance of the die height platen is ceased. In the relative position of the die height platen and fixed platen results in contact of the mold sections prior to the crosshead being placed at the required position, the crosshead is retracted a predetermined distance and then advanced to the required position. Desired die height setting is achieved without repeated iterations of a die height setting procedure.

Claims20

Dependent claims

A method for setting relative position between a fixed platen and a die height platen of a toggle operated press mechanism, the toggle operated press mechanism including a crosshead reciprocable for opening and closing the press mechanism, the method comprising:

a) determining a position of a toggle crosshead relative the die height platen required to produce a desired clamp force;
b) positioning the toggle crosshead at the determined position;
c) advancing the die height platen toward the fixed platen;
and
d) completing setting of relative position by ceasing advance of the die height platen in response to detecting a change of position of the crosshead away from the fixed platen.

2 more elements

Dependencies are inferred from the claim text.

Method and apparatus for setting die height

Life of this patent

Method and apparatus for setting die height

Life of this patent

Abstract

Claims20