Patent ID: 9511410
Filing Date: 2016-12-06
CPC Classification: B21D

Claim Text:
1. A work transfer apparatus comprising: an arm configured to transfer workpieces to be pressed to a press machine or to carry pressed workpieces out of the press machine; first and second crossbars coupled to the arm, the first crossbar being positioned opposite to the second crossbar relative to the arm; a first holding member, attached to the first crossbar, configured to hold a workpiece; a second holding member, attached to the second crossbar, configured to hold another workpiece; a first motor provided to the arm and coupled to the first crossbar, wherein the first motor rotates the first crossbar around an axis of the first crossbar; a second motor provided to the arm and coupled to the second crossbar, wherein the second motor rotates the second crossbar around an axis of the second crossbar; a first reduction gear provided between the first motor and the first crossbar, wherein a rotative power of the first motor is transmitted to the first crossbar through the first reduction gear, and a second reduction gear provided between the second motor and the second crossbar, wherein a rotative power of the second motor is transmitted to the second crossbar through the second reduction gear, wherein the rotative power of the first motor is not transmitted to the second crossbar and the rotative power of the second motor is not transmitted to the first crossbar.