PURPOSE: To effectively eliminate part clogging by vibrating the case at the lowest tier of a parts stack piled and arranged in a plurality of tier during holding and taking-out of it.

CONSTITUTION: Electronic parts, for example, are stocked in each of parts case 12aW12c piled in the slant state. A part taken out of the parts case 12a at the lowest tier slides down due to its dead load through a chute 17. The case 12a is given the vibration transmitted from a holder 18 through a jaw 103 due to the holding and releasing actions alternately repeated. This causes the parts in the case 12a to be stocked in the case efficiently without clogging.