Importance

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Abstract

A two-stage hemming machine has a centrally located press station with an anvil extendable along a vertical axis, and a loading station and an unloading station located on opposite sides of the press station. Separate first and second dies slide on horizontal tracks mounted above the press, the first die movable therealong between the loading station and the press station, and the second die movable between the unloading station and the press station. The dies shuttle back and forth, in unison, between the press station during a production cycle wherein a component to be hemmed is loaded into the first die in the loading station, is carried into the press station along with the first die where the first stage of the hemming operation occurs, and remains on the anvil as the anvil is lowered. The first die then returns to the loading station as the second die moves into the press station. The anvil is extended again to perform a second stage of the hemming operation, the anvil is retracted, the component remaining in contact with the second die, and the second die moves to the unloading station where the component is removed from the press. Spring actuated arms hold the component in connection with the first die as the first die moves to the press station, and a power actuated retaining arm holds the component in connection with the second die as the second die moves to the unloading station.

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First Claim