Destacker unit and system for destacking of objects

A method for destacking an object from a stack of objects, comprising the steps of

• providing a stack of objects arranged substantially vertical, each object having a flange extending outwards along its perimeter,
• providing a plurality of destacker units or a destacking system comprising said plurality of destacker units such that a stack of objects each having a flange extending outwards along its perimeter is destacked in a predetermined direction by rotational motion of at least one of the plurality of destacker units, wherein the at least one of the plurality of destacker units comprises:
• a wheel unit having a rotation axis, said wheel unit comprising:
• a lower surface for carrying the stacked objects, and
• an inclined member located above the lower surface, the inclined member having an inclined upper surface defining an inclination and a bottom surface such that a distance between the inclined upper surface and the bottom surface increases around at least a part of a periphery of the wheel unit,
• a connector part, engaging the wheel unit, the connector part defining a thread having an orientation, and wherein the orientation of the thread corresponds to the inclination of the inclined upper surface,
• separating at least one lowermost object from the stack of objects by means of the destacker units by carrying a bottom object of the stack object on the lower surface and engaging the flange of an object above the bottom object with the inclined member, and
• rotating and vertically displacing the wheel units such that the bottom object is displaced downwardly and destacked by the inclined members whereas the stack of remaining objects slides on the inclined upper surfaces.

A destacking system comprising a plurality of destacker units such that a stack of objects each having a flange extending outwards along its perimeter is destacked in a predetermined direction by rotational motion of the destacker unit, wherein at least one of the plurality of destacker units comprises:

• a wheel unit having a rotation axis, said wheel unit comprising:
• a lower surface for carrying the stacked objects, and
• an inclined member located above the lower surface, the inclined member having an inclined upper surface defining an inclination and a bottom surface such that a distance between the inclined upper surface and the bottom surface increases around at least a part of a periphery of the wheel unit,
• a connector part, engaging the wheel unit, the connector part defining a thread having an orientation, and wherein the orientation of the thread corresponds to the inclination of the inclined upper surface, wherein the inclined member is configured such that during the first rotational motion of the wheel unit, the inclined member separates at least one lowermost object from the stack of objects.

A destacking system comprising a plurality of destacker units such that a stack of objects each having a flange extending outwards along its perimeter is destacked in a predetermined direction by rotational motion of the destacker unit, wherein at least one of the plurality of destacker units comprises:

• a wheel unit having a rotation axis, said wheel unit comprising:
• a lower surface for carrying the stacked objects, and
• an inclined member located above the lower surface, the inclined member having an inclined upper surface defining an inclination and a bottom surface such that a distance between the inclined upper surface and the bottom surface increases around at least a part of a periphery of the wheel unit,
• a connector part, engaging the wheel unit, the connector part defining a thread having an orientation, and wherein the orientation of the thread corresponds to the inclination of the inclined upper surface, configured such that the stack of objects resting and sliding on the inclined upper surface is maintained at a fixed planar height during destacking of said at least one lowermost object.