TWI762671B

To provide a work transport device that exerts such oscillation effects as to allow a part of its conveying part to have out-of-symmetry processed parts and prevent and restrict situations where oscillation failure that may hamper a smooth transport process from occurring on the delivery surface.SOLUTION: A parts feeder X including transport parts 1, 3 that have each transport truck 1T, 3T and driving means 2, 4 that cause traveling waves to occur on the transport trucks 1T, 3T, and transports a work W by the traveling waves along the transport trucks 1T, 3T. Out of the transport parts 1, 3, upper side areas 11, 31 including surfaces where the transport trucks 1T, 3T are created, are formed by low elastic modulus material, and bottom side areas 12, 32 which are areas lower than the upper side areas are formed by high elastic modulus material with higher elasticity than the low elastic modulus material, at least the bottom side areas 12, 32 being set to be in a symmetrical shape.SELECTED DRAWING: Figure 1