PURPOSE: To simplify the structure and to make a movable part small in size and light in weight by moving a moving trolley in the line direction, and giving a gripping/separating operation, a feeding operation and an ascending/descending operation to a work by a finger attached thereto.

CONSTITUTION: By driving a motor 45, width of a guide 39 is adjusted. When a driving shaft 64 is driven to rotate, and the guide 39 is oscillated centering around an axis 40, a finger 82 oscillates through a moving trolley 74 and a vertical rack 81, and a gripping/separating operation to a work (a) is executed. Simultaneously, by a rotation of the driving shaft 64, an arm 90 oscillates, the moving trolley 74 is moved in the line direction through a universal arm 87, and the work (a) is fed. Subsequently, the vertical rack 81 ascends and descends through a universal arm 98, and the work (a) is allowed to ascend and descend through the finger 82. Since the movement and ascending and descending are executed by attaching the finger 82 to the moving trolley 74, the movable part becomes small in size.