Buckle chute folder having sheet squaring feature

摘要

A table top buckle chute fold machine is disclosed in which improved and more reliable squaring of the paper to the folding rolls is accomplished by lightly driving an inserted sheet of paper with a friction roller against a selected one of several deflector assemblies. The deflector assemblies each include a deflector member spaced away from the rollers to direct the advancing edge of the paper inwardly so as to be abutted against the back of a recessed guide groove. An intermittently engaged drive roller causes the squared paper to be forcibly advanced against the groove, causing the sheet to buckle and be nipped between another pair of driven nip rollers, forming a first fold at the location determined by the location of the particular deflector assembly activated. A movable deflector back either routes the folded paper to an exit chute or to another abutment surface, causing buckling and nipping between another pair of nip rollers to optionally add a second fold to the already folded sheet of paper prior to exiting the machine.