Patent ID: 6131496
Filing Date: 2000-10-17
Classification: B65H,Y10T

Abstract:
A sheet processing machine comprising:a chain conveyor for transporting a plurality of sheets, each of said plurality of sheets having a leading end and a trailing end;first and second laterally spaced circulating chains, said first and second circulating chains forming said chain conveyor;a plurality of chain gripper systems carried by said chain conveyor, each of said chain gripper systems extending between said first and second laterally spaced circulating chains and engaging said leading end of one of said plurality of sheets and transporting each of said plurality of sheets in a sheet transport direction;at least one transverse sheet cutting device cooperating with said chain conveyor, said transverse sheet cutting device including a rotating cutting cylinder with a cutter, said rotating cutting cylinder having a peripheral surface and being positioned between said first and second laterally spaced circulating chains and having an axis of rotation generally transverse to said direction of transport of said plurality of sheets by said chain conveyor, said cutter extending axially across said rotating cutting cylinder between said first and second laterally spaced circulating chains;an axially extending depression in said peripheral surface of said rotating cutting cylinder, said axially extending depression receiving said chain gripper systems as said chain gripper systems pass through said transverse sheet cutting device, said axially extending depression having a width larger than a width required by said chain gripper systems;an opposing cutter cooperating with said cutter on said rotating cutting cylinder, said cutter on said rotating cutting cylinder and said opposing cutter being inclined with respect to said axis of rotation of said rotating cutting cylinder, said cutter on said rotating cutting cylinder and said opposing cutter cooperating to cut a transverse strip off said trailing end of each of said plurality of sheets while each of said plurality of sheets is engaged by one of said chain gripper systems and is passing through said at least one transverse cutting device; andmeans to phase shift said rotating cutting cylinder with respect to said chain conveyor to adjust cutting register of said rotating cutting cylinder with respect to said chain conveyor, said means to phase shift said rotating cutting cylinder including a position controlled electric motor driving said rotating cutting cylinder.