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US 9,365,007 B2Granted
Four-bar press with increased stroke rate and reduced press size
AssigneeMetal Systems Technologies, LLC
InventorsJohn G. Lose, Sheldon A. Spachner
Life of this patent
Estimating the term…
Abstract
The present application provides a four-bar press that includes a plurality of linkages and at least one element for maintaining at least one of the plurality of linkages in the four bar press in compression during at least a portion of a press cycle. This beneficially reduces undesirable characteristics of the press, such as jerk, which enables use of smaller and lighter components.
Claims5
A four-bar press comprising:
- a crank link;
- a drag link;
- a lazy link;
- a slider link, the crank link pivotally connected to the drag link via a first pin, and the drag link pivotally connected to the lazy link via a second pin and to the slider link via a third pin, the third pin located on the drag link between the first and second pins;
- and one or more actuators pivotally coupled indirectly to the slider link via a fourth pin, wherein the one or more actuators exert a force on the slider link that counterbalances inertial force that would otherwise result in the slider link being in tension during at least a portion of a press cycle, the force applied thereby maintaining the slider link in compression during the at least a portion of the press cycle.
2 more elements
Dependencies are inferred from the claim text.