Workpiece transfer apparatus for press machine and crossbar unit

A crossbar unit of a workpiece transfer apparatus for a press machine, comprising:

• a crossbar extending to be approximately orthogonal to a workpiece transfer direction, for supporting a workpiece retaining device capable of retaining and releasing a workpiece;
• a guiding device which supports and guides the workpiece retaining device so that the workpiece retaining device is slidable along a longitudinal direction of the crossbar;
• a driving device which drives the workpiece retaining device supported and guided by the guiding device so as to be slidable along the longitudinal direction of the crossbar so that the workpiece retaining device is moved along the longitudinal direction of the crossbar;
• and
• a brake device which acts in a path different from a path of the driving device, the brake device being capable of fixing and releasing a position of the workpiece retaining device supported and guided by the guiding device so as to be slidable along the longitudinal direction of the crossbar, with respect to the longitudinal direction of the crossbar.