A work piece conveyor whose structure is simplified and downsized with the
intention of achieving cost reduction, an improved degree of freedom in
setting a motion pattern and improved productive efficiency. The
workpiece conveyor is such that a cross bar carrier for supporting a
cross bar provided with vacuum cups is movably attached, through a linear
movement mechanism, to a feed lever which is oscillating-driven along a
workpiece conveying direction, thereby making the relative distance
between the center of oscillation of the rocking element and the cross
bar variable.