Apparatus for stacking articles in sheet form for electrical machines

Apparatus for stacking and intermittently discharging stacks of sheet material for electrical machines and the like, said apparatus comprising:

• a plurality of mandrels configured for accepting a plurality of said sheets in stacked form thereon,
• mandrel moving means for successively moving said mandrels into and out of a sheet receiving position at a delivery zone of conveyor means successively supplying said sheets, whereby a mandrel with a stack of sheets formed thereon is movable away from the sheet receiving position and an empty mandrel is movable into said sheet receiving position to effect a mandrel exchange.
• a mandrel tip selectively positionable at said delivery zone in alignment with respective ones of said mandrels when in said sheet receiving position for accommodating stacking of said sheets on said mandrels over said mandrel tip,
• mandrel tip holding means for holding the mandrel tip in position at said delivery zone during a mandrel exchange such that an intermediate stack of sheets can be accommodated on said mandrel tip during said mandrel exchange,
• said holding means including holding jaws for encompassing said mandrel tip, and
• transfer means for accommodating transfer of said intermediate stack to an empty mandrel after said mandrel exchange.

Apparatus for stacking and intermittently discharging stacks of sheet material for electrical machines and the like, said apparatus comprising:

• a plurality of mandrels configured for accepting a plurality of sheets in stacked form thereon,
• mandrel moving means for successively moving said mandrels into and out of a sheet receiving position at a delivery zone of conveyor means successively supplying said sheets, whereby a mandrel with a stack of sheets formed thereon is movable away from the sheet receiving position and an empty mandrel is movable into said sheet receiving position to effect a mandrel exchange,
• a mandrel tip positionable at said delivery zone in alignment with respective ones of said mandrels when in said sheet receiving position for accommodating stacking of said sheets on said mandrels over said mandrel tip,
• mandrel tip holding means for holding said mandrel tip in position at said delivery zone during a mandrel exchange such that an intermediate stack of sheets can be accommodated on said mandrel tip during said mandrel exchange,
• said holding means including holding jaws for encompasing said mandrel tip,
• a movable slide for holding said intermediate stack on said mandrel tip, and
• transfer means for accommodating transfer of said intermediate stack to an empty mandrel after said mandrel exchange, said transfer means including means for moving said movable slide to a position permitting passage of said intermediate stack over said mandrel tip and onto an empty mandrel.

Apparatus for stacking and intermittently discharging stacks of sheet material for electrical machines and the like, said apparatus comprising:

• a plurality of mandrels configured for accepting a plurality of said sheets in stacked form thereon, each mandrel is provided at one end with an external cone,
• mandrel moving means for successively moving said mandrels into and out of a sheet receiving position at a delivery zone of conveyor means successively supplying said sheets, whereby a mandrel with a stack of sheets formed thereon is movable away from the sheet receiving position and an empty mandrel is movable into said sheet receiving position to effect a mandrel exchange,
• a mandrel tip positionable at said delivery zone in alignment with respective ones of said mandrels when in said sheet receiving position for accommodating stacking of said sheets on said mandrels over said mandrel tip, said mandrel tip is provided at one end with an internal cone matingly engageable with respective ones of said external cones,
• mandrel tip holding means for holding said mandrel tip in position at said delivery zone during a mandrel exchange such that an intermediate stack of sheets can be accommodated on said mandrel tip during said mandrel exchange, and
• transfer means for accommodating transfer of said intermediate stack to an empty mandrel after said mandrel exchange.

Apparatus for stacking and intermittently discharging stacks of sheet material for electrical machines and the like, said apparatus comprising:

• a plurality of mandrels configured for accepting a plurality of said sheets in stacked form thereon,
• mandrel moving means for successively moving said mandrels into and out of a sheet receiving position at a delivery zone of conveyor means successively supplying said sheets, whereby a mandrel with a stack of sheets formed thereon is movable away from the sheet receiving position and an empty mandrel is movable into said sheet receiving position to effect a mandrel exchange,
• a mandrel tip positionable at said delivery zone in alignment with respective ones of said mandrels when in said sheet receiving position for accommodating stacking of said sheets on said mandrels over said mandrel tip,
• mandrel tip holding means for holding said mandrel tip in position at said delivery zone during a mandrel exchange such that an intermediate stack of sheets can be accommodated on said mandrel tip during said mandrel exchange,
• a movable slide for holding said intermediate stack on said mandrel tip, said holding means is connected with said movable slide, and
• transfer means for accommodating transfer of said intermediate stack to an empty mandrel after said mandrel exchange.

Apparatus for stacking and intermittently discharging stacks of sheet material for electrical machines and the like, said apparatus comprising:

• a plurality of vertically extending mandrels configured for accepting a plurality of said sheets in stacked form thereon,
• mandrel moving means for successively moving said mandrels into and out of a sheet receiving position at a delivery zone of conveyor means successively supplying said sheets, whereby a mandrel with a stack of sheets formed thereon is movable away from the sheet receiving position and an empty mandrel is movable into said sheet receiving position to effect a mandrel exchange, said mandrel moving means including means for lifting and lowering said mandrels in the direction of their longitudinal axes,
• a mandrel tip positionable at said delivery zone in alignment with respective ones of said mandrels when in said sheet receiving position for accommodating stacking of said sheets on said mandrels over said mandrel tip,
• mandrel tip holding means for holding said mandrel tip in position at said delivery zone during a mandrel exchange such that an intermediate stack of sheets can be accommodated on said mandrel tip during said mandrel exchange, and
• transfer means for accommodating transfer of said intermediate stack to an empty mandrel after said mandrel exchange.